HD Services Open Loop Ground Source Heat Pumps by Tbag Productions

ces

Ltd

Services ltd

FOR ALL YOUR HEATING AND WATER NEEDS

HEATING THAT WON’T COST THE EARTH

01494 792000 01494 792000 www.hdgeothermal.co.uk www.hdgeothermal.co.uk

BACKGROUND

ABOUT US H.D. Services became incorporated as a limited company in 1988. The company was formed by Frank Harris, a Civil Engineer experienced in soil mechanics and well drilling. The company initially focused on drilling water supply and soakaway boreholes and has developed their own range of sewage treatment systems, the HD-‐SM. H.D. Services recognised the compatibility between the construction of water supply boreholes and the growing Renewable Energy market. Following attendance at a European seminar on ground source heat pumps (GSHP), and after much research, H.D. Services decided to invest in the Open Loop Ground Source Heat Pump market. We are a fully accredited Microgeneration Certification Scheme (MCS) company and subscribe to the Renewable Energy Consumer Code (RECC), which means that customers can be assured of a high quality installation service by a registered installer. Use of an MCS registered installer means your installation may also be eligible for financial support via the domestic Renewable Heat Incentive (RHI). The company works hard to ensure that the highest quality workmanship and service is delivered to our customers/clients and we take pride in our approach to our work. We do not employ external consultants to design, agents to sell or sub-‐contractor labour to install – all work is completed in-‐house. HOW WE WORK We have a partnering agreement with a British manufacturer with whom we work closely to ensure the highest quality installation and service. As this type of renewable heating system is best suited to new homes with under-‐floor heating, we initially focused our attention on the new-‐build market. With the development of new under-‐floor heating technology, we have now expanded into the retrofit market. We aim to provide the highest quality Open Loop Ground Source Heat Pump service available in South East England. Our customers rely on our advice and flexibility to suit their individual requirements and we associate ourselves with like-‐minded suppliers. As a contractor committed to the highest service standards, H.D. Services is dedicated to completing contracts on time. In 2015, H.D. Services Ltd was awarded RHI Installer of the Year for the South East region at the Green Deal and ECO Awards.

BACKGROUND BACKGROUND

H.D. DRILLING LTD H.D. DRILLING LTD The company can often confirm the feasibility of a proposed installation upon the receipt of The company can often confirm the feasibility of a proposed installation upon the receipt of a site postcode. a site postcode. H.D. Drilling is the sister company of H.D. Services and carries out all drilling works H.D. Drilling is the sister company of H.D. Services and carries out all drilling works associated with the installation of our Open Loop Ground Source Heat Pump systems. The associated with the installation of our Open Loop Ground Source Heat Pump systems. The company has been constructing water supply and soakaway boreholes throughout South company has since been 1984. constructing water supply and soakaway boreholes East England They have been members of the Well Drillers throughout Association South since East England since 1984. They have been members of the Well Drillers Association since 1988 and have a vast knowledge of the hydro-‐geology throughout South East England. 1988 and have a vast knowledge of the hydro-‐geology throughout South East England.

H.D. Drilling only operate cable percussion drilling rigs, the drilling method acknowledged by H.D. Drilling only operate cable percussion drilling rigs, the drilling method acknowledged by the Environment Agency and water companies as the most suitable way to drill the chalk the Environment Agency and water companies as the most suitable way to drill the chalk aquifer. All drilling work associated with the installation of Open Loop Ground Source Heat aquifer. All drilling work associated with the installation of Open Loop Ground Source Heat Pumps is carried out by H.D. Drilling. Pumps is carried out by H.D. Drilling. Both H.D. Services and H.D. Drilling are BS EN ISO 9001 and 14001 registered companies. Both H.D. Services and H.D. Drilling are BS EN ISO 9001 and 14001 registered companies.

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HEAT PUMPS HEAT PUMPS

For millions of years, the sun has provided sufficient energy to support life on Earth, most For millions of years, the sun has provided sufficient energy to support life on Earth, most of which is not being harnessed and is just passing us by. If we can utilise just a fraction of of which is not being harnessed and is just passing us by. If we can utilise just a fraction of this energy to heat our homes, we can move away from using fossil fuels and help put a this energy to heat our homes, we can move away from using fossil fuels and help put a stop to the destruction of our planet. One way in which we can do this is to use heat stop to the destruction of our planet. One way in which we can do this is to use heat pumps to provide heating and hot water for our homes. pumps to provide heating and hot water for our homes.

GROUND SOURCE HEAT PUMPS GROUND SOURCE HEAT PUMPS The earth is continually absorbing heat from the sun. Although the surface of the earth is The earth is continually absorbing heat from the sun. Although the surface of the earth is subject to seasonal temperature fluctuations, once below a depth of 1.5 metres, the ground subject to seasonal temperature fluctuations, once below a depth of 1.5 metres, the ground temperature is constant at between 8 and 14°C all year round. A ground source heat pump temperature is constant at between 8 and 14°C all year round. A ground source heat pump is designed to use this constantly renewed energy to supply your domestic heating and hot is designed to use this constantly renewed energy to supply your domestic heating and hot water requirements, and could reduce heating bills by more than 50%. water requirements, and could reduce heating bills by more than 50%. After experimenting with a freezer, Robert C. Webber built the first direct exchange ground After experimenting with a freezer, Robert C. Webber built the first direct exchange ground source heat pump in the late 1940s. The technology became popular in Sweden in the source heat pump in the late 1940s. The technology became popular in Sweden in the 1970s, and its acceptance has been growing slowly worldwide ever since. By 2004, there 1970s, and its acceptance has been growing slowly worldwide ever since. By 2004, there were over a million units installed worldwide, providing 12 GW of thermal energy. Each were over a million units installed worldwide, providing 12 GW of thermal energy. Each year roughly 80,000 units are installed in the United States and a further 27,000 in Sweden. year roughly 80,000 units are installed in the United States and a further 27,000 in Sweden. The basic principles of a Ground Source Heat Pump: The basic principles of a Ground Source Heat Pump: Ground source heat pumps work on the same principal as a refrigerator cooling circuit but in Ground source heat pumps work on the same principal as a refrigerator cooling circuit but in reverse. Low temperature heat is taken from the ground or ground-‐water and ‘upgraded’ to reverse. Low temperature heat is taken from the ground or ground-‐water and ‘upgraded’ to a higher temperature and used to heat the water in the heating system to provide space a higher temperature and used to heat the water in the heating system to provide space heating and/or hot water. In a typical system, for every unit of electrical energy used to heating and/or hot water. In a typical system, for every unit of electrical energy used to drive the system, between 3 and 5 units of heat are produced. drive the system, between 3 and 5 units of heat are produced. There are two types of ground source heat pump installation – closed-‐loop and open-‐loop. There are two types of ground source heat pump installation – closed-‐loop and Open Loop. Closed-‐Loop: Closed-‐Loop: Closed-‐Loop systems pump an anti-‐freeze solution through pipes buried in the ground. The Closed-‐Loop systems pump an anti-‐freeze solution through pipes buried in the ground. The loops can be installed either horizontally in trenches or vertically in a series of boreholes loops can be installed either horizontally in trenches or vertically in a series of boreholes drilled into the ground. The overall length of these loops depends on the size of the heat drilled into the ground. The overall length of these loops depends on the size of the heat pump and the thermal conductivity of the ground in which they are laid. Heat losses pump and the thermal conductivity of the ground in which they are laid. Heat losses between the antifreeze solution and the loop-‐pipe, the loop-‐pipe and the grout surround between the antifreeze solution and the loop-‐pipe, the loop-‐pipe and the grout surround and the grout surround and the ground itself reduces the efficiency of these systems in and the grout surround and the ground itself can reduce the efficiency of these systems comparison with an open-‐loop system in which the water is in contact with the ground. A over time. A closed-‐loop system can, however, be installed anywhere in the country. closed-‐loop system can, however, be installed anywhere in the country.

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HEAT PUMPS HEAT PUMPS Open-‐Loop:

Open Loop: Open-‐Loop systems are the most efficient ground source heat pump option. They work by taking heat out of the ground water, usually abstracted from an aquifer (a body of saturated Open Loop systems are the most efficient ground source heat pump option. They work by rock through which water can easily move). As the water is in direct contact with the taking heat out of the ground water, usually abstracted from an aquifer (a body of saturated ground there are no heat losses between surfaces. The water is extracted via a borehole rock through which water can easily move). As the water is in direct contact with the and pumped through the heat pump, where heat is extracted from the water. The water is ground there are no heat losses between surfaces. The water is extracted via a borehole cooled by approximately 5˚C before being returned to the ground, where it immediately and pumped through the heat pump, where heat is extracted from the water. The water is begins to regain heat from the earth. The ground temperature in South-‐East England is cooled by approximately 5˚C before being returned to the ground, where it immediately constant at between 10 and 12°C all year round. begins to regain heat from the earth. The ground temperature in South-‐East England is constant at between 10 and 12°C all year round. This type of system will only work in areas where there is sufficient ground water available. H.D. Services Ltd prefers to install Open Loop systems because: This type of system will only work in areas where there is sufficient ground water available. H.D. Services Ltd prefers to install Open Loop systems because: • Open Loop systems require a water supply borehole and soakaway borehole; we have been drilling the chalk aquifers of South East England for over 30 years and have gained • Open Loop systems require a water supply borehole and soakaway borehole; we have considerable experience and expertise in this area. been drilling the chalk aquifers of South East England for over 30 years and have gained • An Open Loop system does not pump chemicals through the ground. considerable experience and expertise in this area. • The installation of an Open Loop system is less invasive compared to that of a Closed • An Open Loop system does not pump chemicals through the ground. Loop system. • The installation of an Open Loop system is less invasive compared to that of a Closed • An Open Loop system can also provide you with an independent water supply. This Loop system. means you could save money on your water bills and you will not be subject to • An Open Loop system can also provide you with an independent water supply. This hosepipe bans! means you could save money on your water bills and you will not be subject to hosepipe bans!

NOT TO SCALE

HEAT PUMPS HEAT PUMPS

How an Open-‐Loop Ground Source Heat Pump works:

At the heart of a modern heat pump is a refrigeration system. The refrigeration cycle is an effective provider or remover of heat. An open loop ground source heat pump uses water How an Open Loop Ground Source Heat Pump works: pumped from the ground (typically via a borehole) and extracts heat from it. This heat is then raised in temperature and delivered to the domestic hot water system and the space At the heart of a modern heat pump is a refrigeration system. The refrigeration cycle is an heating system. The highest grade temperature is available to the hot water, enabling effective provider or remover of heat. An open loop ground source heat pump uses water temperatures up to 65°C. pumped from the ground (typically via a borehole) and extracts heat from it. This heat is then raised in temperature and delivered to the domestic hot water system and the space With coefficients of performance (COPs) of up to 5.0, open-‐loop ground source heat pumps heating system. The highest grade temperature is available to the hot water, enabling offer an environmentally friendly source of heating with significantly lower running costs temperatures up to 65°C. than a conventional heating system. With seasonal performance factors (SPFs) of up to 5.0, Open Loop ground source heat pumps offer an environmentally friendly source of heating with significantly lower running costs than a conventional heating system.

HEAT PUMPS

H.D. Services Ltd has a partnering agreement with the manufacturer of SolEco Open Loop Ground Source Heat Pumps. (GSHP) SolEco are specialists in the design and manufacture of Open Loop GSHP and are based in the UK, where they have been designing heat pumps for more than 30 years. SolEco Open Loop GSHP use stored solar energy from underground water that remains at a constant year round temperature of around 11°C. The GSHP receives water from a borehole and transfers it to your heating system at temperatures up to 55°C. The SolEco Open Loop GSHP is most efficient with under-‐floor heating and modern low temperature radiators. With the constant temperature of underground water, coupled with the highly efficient design, back up heating is not normally required. The SolEco Open Loop GSHP has the added benefit of an independent domestic hot water circuit. Operating at the same time as the heating circuit, the SolEco Open Loop GSHP can provide hot water up to 65°C. Drinking water (a potable supply) can be supplied via the water supply borehole, subject to analysis and suitable filtration. This can reduce the cost of household water bills therefore providing further financial savings. By collecting the discharge water in a buried harvesting tank on route to the soakaway, not only will it begin to regain heat immediately, the grey water can also be used for garden irrigation, car washing and other everyday activities.

HEAT PUMPS -‐ Benefits HEAT PUMPS -‐ Benefits

There are many benefits to choosing a Soleco Open-‐Loop GSHP: There are many benefits to choosing a SolEco Open Loop GSHP: FINANCIAL FINANCIAL Lower running costs – better average Eligible for Renewable Heat Incentive (RHI) Lower running costs – better average Eligible for Renewable Heat Incentive (RHI) coefficient of performance (COP) compared Scheme – financial support is available for seasonal performance factors (SPFs) Scheme – financial support is available for to air source or Closed Loop heat pumps. those using renewable heat technologies. compared to air source or Closed Loop heat those using renewable heat technologies. For more information please visit: For more information please visit: pumps. Independent Water Supply – no mains www.ofgem.gov.uk/environmental-‐ www.ofgem.gov.uk/environmental-‐ water required, saving you money on water programmes/domestic-‐renewable-‐heat-‐ Independent Water Supply – no mains programmes/domestic-‐renewable-‐heat-‐ charges * incentive water required, saving you money on water incentive charges * GENERAL GENERAL • Reduced Carbon Footprint – taking into • Greater water efficiency – borehole • Reduced Carbon Footprint – taking into • Greater water efficiency – borehole account the CO₂ produced by electricity water can usually be filtered for account the CO₂ produced by electricity water can usually be filtered for generation, a Soleco heat pump is consumption, and discharge water can generation, a SolEco heat pump is consumption and discharge water can be responsible for less carbon dioxide that be used for grey water, to irrigate the responsible for less carbon dioxide that used for grey water, to irrigate the even the most efficient gas condensing garden or wash the car. even the most efficient gas condensing garden or wash the car. boiler. boiler.

• High System efficiency – as underground • High System efficiency – as underground water temperatures remain constant water temperatures remain constant throughout the year. throughout the year.

• Better Annual COP – compared to either • Better Annual SPF – compared to either air source or closed-‐loop heat pumps. air source or closed-‐loop heat pumps.

• Minimal installation disruption – no need • Minimal installation disruption – no need to dig up the garden to install the system, to dig up the garden to install the system, unlike a horizontal closed-‐loop system. unlike a horizontal closed-‐loop system.

• Minimal visual impact – only a manhole • Minimal visual impact – only a manhole cover can be seen externally, unlike air cover can be seen externally, unlike air source heat pumps, which have a large source heat pumps, which have a large exterior unit. exterior unit.

• MCS accredited –Soleco MCS HP0164 • MCS accredited –SolEco MCS HP0164 guarantees a high quality standard. guarantees a high quality standard. • Compatible with under floor heating and • Compatible with under floor heating and low temperature radiators. low temperature radiators.

• Less space needed – only a small plot is • Less space needed – only a small plot is needed, unlike a horizontal closed-‐loop needed, unlike a horizontal closed-‐loop system. system. • Hot water up to 65°c all year round • Hot water up to 65°c all year round

*The Water Act 2003 allows for the abstraction of water from the ground without charge, provided the daily abstraction rate is less than *The Water Act 2003 allows for the abstraction of water from the ground without charge, provided the daily abstraction rate is less than 20,000 litres. It is unlikely that a Soleco heat pump for domestic use will ever require more than 20,000 litres of water per day. 20,000 litres. It is unlikely that a SolEco heat pump for domestic use will ever require more than 20,000 litres of water per day.

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HEAT PUMPS – Technical Information HEAT PUMPS – Technical Information HEAT PUMPS – Technical Information

SYSTEM COMPARISON SYSTEM COMPARISON SYSTEM COMPARISON

TECHNICAL DETAILS TECHNICAL DETAILS TECHNICAL DETAILS

GENERAL DESCRIPTION GENERAL DESCRIPTION Model Designation GENERAL DESCRIPTION Model Designation Power Supply Model Designation Power Supply Denomination Power Supply Denomination Intended Use of Unit Intended Use of Unit Denomination DIMENSIONS DIMENSIONS Intended Use of Unit Height (mm) Height (mm) DIMENSIONS Width (mm) Width (mm) Height (mm) Depth (mm) Depth (mm) Width (mm) Weight (kg) Weight (kg) Depth (mm) PERFORMANCE FIGURES * PERFORMANCE FIGURES * Weight (kg) Heating Capacity (kW) Heating Capacity (kW) PERFORMANCE FIGURES * COP COP Heating Capacity (kW) OPERATING RANGE OPERATING RANGE Min Operating Temperature COP Min Operating Temperature (Building) °C OPERATING RANGE (Building) °C Max operating Temperature Min Operating Temperature Max operating Temperature (Building) °C (Building) °C (Building) °C Max operating Temperature (Building) °C

Sol 12-‐1 Sol 12-‐1 Sol 12-‐1

207 207

207 12.8 12.8 3.95 3.95 12.8 3.95

SINGLE PHASE THREE PHASE SINGLE PHASE Sol 18-‐1 Sol 26-‐1 Sol 12-‐3 THREE PHASE Sol 18-‐3 Sol 26-‐3 SINGLE PHASE THREE PHASE Sol 18-‐1 Sol 26-‐1 Sol 12-‐3 400v/3ph/50Hz Sol 18-‐3 Sol 26-‐3 230v/1ph/50Hz Sol 18-‐1 Sol 26-‐1 Sol 12-‐3 400v/3ph/50Hz Sol 18-‐3 Sol 26-‐3 230v/1ph/50Hz Water to Water 230v/1ph/50Hz 400v/3ph/50Hz Water to Water Domestic Heating and Hot Water Domestic Heating and Hot Water Water to Water Domestic Heating and Hot Water 1100 1100 625 625 1100 725 625 207 245 266 725 245 266 245 266 207 245 266 725 245 266 207 245 266 18.9 26.0 12.8 18.9 26.0 18.9 26.0 18.9 26.0 12.8 4.28 4.12 3.95 4.28 4.12 4.28 4.12 3.95 4.28 4.12 18.9 26.0 12.8 18.9 26.0 4.12 4.28 4.12 3.95 4.28 30 30 55 30 55

*Specified at BS EN 14511:2011 conditions. Source water in at 10°C, out at 7°C. Heating water in at 30°C, out at 35°C. *Specified at BS EN 14511:2011 conditions. Source water in at 10°C, out at 7°C. Heating water in at 30°C, out at 35°C. *Specified at BS EN 14511:2011 conditions. Source water in at 10°C, out at 7°C. Heating water in at 30°C, out at 35°C.

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H.D. SERVICES INSTALLATIONS H.D. SERVICES INSTALLATIONS

WHY CHOOSE AN H.D. SERVICES INSTALLTION? WHY CHOOSE AN H.D. SERVICES INSTALLTION? An H.D. Services Open-‐Loop GSHP installation could meet all your domestic heating An H.D. Services Open Loop GSHP installation could meet all your domestic heating requirements and your hot and cold water needs at a fraction of the running cost of a requirements and your hot and cold water needs at a fraction of the running cost of an oil or conventional gas boiler. The ‘cooled’ water can also provide a ‘grey water’ supply, ideal for gas boiler. The ‘cooled’ water can also provide a ‘grey water’ supply, ideal for car car washing/garden watering/feeding cattle troughs etc. washing/garden watering/feeding cattle troughs etc.

HEATING HEATING

HOT WATER HOT WATER

DRINKING DRINKING WATER WATER

GREY WATER GREY WATER

Our service includes the supply, installation and commissioning of a complete water supply Our service includes the supply, installation and commissioning of a complete water supply and open-‐loop heat pump system with the least disruption possible. and Open Loop heat pump system with the least disruption possible. H.D. Services are a fully accredited Microgeneration Certification Scheme (MCS) company H.D. Services are a fully accredited Microgeneration Certification Scheme (MCS) company and subscribe to the Renewable Energy Consumer Code (RECC), which means that and subscribe to the Renewable Energy Consumer Code (RECC), which means that customers can be assured of a high quality installation service by a registered installer. Use customers can be assured of a high quality installation service by a registered installer. Use of an MCS registered installer means your installation may also be eligible for financial of an MCS registered installer means your installation may also be eligible for financial support via the domestic Renewable Heat Incentive (RHI). support via the domestic Renewable Heat Incentive (RHI). H.D. Services works hard to ensure that the highest quality workmanship and service is H.D. Services works hard to ensure that the highest quality workmanship and service is delivered to our customers/clients and we take pride in our approach to our work – if we do delivered to our customers/clients and we take pride in our approach to our work – if we do not think the site is suitable for an Open Loop heat pump system, we will tell you. We do not think the site is suitable for an Open Loop heat pump system, we will tell you. We do not employ external consultants to design, agents to sell or sub-‐contractor labour to install – not employ external consultants to design, agents to sell or sub-‐contractor labour to install – all work is completed in-‐house. all work is completed in-‐house. After commissioning an installation, it is registered with the MCS. All installations are After commissioning an installation, it is registered with the MCS. All installations are provided with a 5 year workmanship warranty and the client offered an annual maintenance provided with a 5 year workmanship warranty and the client offered an annual maintenance contract to ensure the heat pump is regularly maintained and working efficiently. H.D> contract to ensure the heat pump is regularly maintained and working efficiently. H.D. Services Ltd are currently working alongside Soleco to develop a 7 year warranty for the Services Ltd are currently working alongside SolEco to develop a 7 year warranty for the Heat Pump unit in line with the term of payments available through the domestic RHI. Heat Pump unit in line with the term of payments available through the domestic RHI.

How do we install an Open-‐Loop GSHP? How do we install an Open Loop GSHP? A water supply borehole would be drilled and a soakaway constructed, with the efficiency of A water supply borehole would be drilled and a soakaway constructed, with the efficiency of both being proved by pumping continuously from one to the other. Ground water at a both being proved by pumping continuously from one to the other. Ground water at a temperature of around 11°c would then be pumped into the building. Here, flow could be temperature of around 11°c would then be pumped into the building. Here, flow could be diverted to feed both a potable water supply (subject to analysis and via UV filtration) and diverted to feed both a potable water supply (subject to analysis and via suitable filtration) an open-‐loop heat pump. and an Open Loop heat pump.

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H.D. SERVICES INSTALLATIONS H.D. SERVICES INSTALLATIONS

The heat pump extracts heat from the water and uses it to raise the temperature of water

being circulated throughout the house. There are usually two separate water circuits, one The heat pump extracts heat from the water and uses it to raise the temperature of water for space heating up to 55 °C and another for domestic hot water up to 65°C. being circulated throughout the house. There are usually two separate water circuits, one for space heating up to 55 °C and another for domestic hot water up to 65°C. Cooled water at around 6°C is directed from the heat pump back into the ground, where the ground temperature warms the water back up. Cooled water at around 6°C is directed from the heat pump back into the ground, where the ground temperature warms the water back up. A harvesting tank can be installed to store the discharge from the heat pump, thereby providing a water supply for garden irrigation or other ‘grey-‐water’ use. Unlike rain water A harvesting tank can be installed to store the discharge from the heat pump, thereby harvesting tanks that are only replenished when it rains, a heat pump harvesting tank is providing a water supply for garden irrigation or other ‘grey-‐water’ use. Unlike rain water replenished whenever the heat pump is in operation. If the harvesting tank is buried in the harvesting tanks that are only replenished when it rains, a heat pump harvesting tank is ground, the water starts to reclaim heat immediately, meaning that the aquifers are less replenished whenever the heat pump is in operation. If the harvesting tank is buried in the likely to be cooled by the returning water. ground, the water starts to reclaim heat immediately, meaning that the aquifers are less likely to be cooled by the returning water.

H.D. SERVICES APPROACH H.D. SERVICES APPROACH H.D Services Ltd. provides a one-‐stop solution throughout South East England for domestic and small commercial Open-‐loop Ground Source Heat Pump installations. H.D Services Ltd. provides a one-‐stop solution throughout South East England for domestic

and small commercial Open Loop Ground Source Heat Pump installations. On all our Ground Source Heat Pump installations we offer: On all our Ground Source Heat Pump installations we offer: • FREE feasibility study •• COMPLETE supply, installation and maintenance service FREE feasibility study •• COMPLETE supply, installation and maintenance service EXPERIENCED STAFF who are directly employed •• FULLY TRAINED AND ACCREDITED personnel EXPERIENCED STAFF who are directly employed •• ANNUAL servicing/maintenance programme FULLY TRAINED AND ACCREDITED personnel •• ANNUAL servicing/maintenance programme ADVICE AND SUPPORT in applying for the Renewable Heat Incentive (RHI) – which contributes to reimbursing the capital investment of qualifying installations. • ADVICE AND SUPPORT in applying for the Renewable Heat Incentive (RHI) – which

contributes to reimbursing the capital investment of qualifying installations.

H.D. Services is committed to providing the best heat pump installation service we can. Consequently, we are members of and subscribe to the following: H.D. Services is committed to providing the best heat pump installation service we can. Consequently, we are members of and subscribe to the following:

H.D. Services also has long and positive working relationships with: H.D. Services also has long and positive working relationships with:

H.D. SERVICES TRACK RECORD & CASE STUDIES H.D. SERVICES TRACK RECORD & CASE STUDIES

Since 2010 H.D. Services have installed numerous domestic and small scale commercial

Open-‐Loop systems in various counties domestic of South East England. We have on-‐ Since 2010 heat H.D. pump Services have installed numerous and small scale commercial going projects, where the water supply borehole has been drilled and the soakaway Open Loop heat pump systems in various counties of South East England. We have on-‐going constructed. Water from the supply hole has been pumped into the soakaway for a number projects, where the water supply borehole has been drilled and the soakaway constructed. of hours to prove the efficiency of both and we are now waiting for the properties to be Water from the supply hole has been pumped into the soakaway for a number of hours to constructed before we install and commission the heat pumps. prove the efficiency of both and we are now waiting for the properties to be constructed before we install and commission the heat pumps. H.D. Services work closely with their clients and contractors, architects and consultants to determine system requirements throughout the build process. A document outlining the H.D. Services work closely with their clients and contractors, architects and consultants to plumbing and electrical requirements of the heat pump is provided. determine system requirements throughout the build process. A document outlining the plumbing and electrical requirements of the heat pump is provided. H.D. Services firmly believe in making the installation process of a Ground Source Heat Pump as stress-‐free possible, which is why we provide a free of consultancy all H.D. Services firmly as believe in making the installation process a Ground service Source to Heat customers who request a quotation from us. The knowledge and expertise held within the Pump as stress-‐free as possible, which is why we provide a free consultancy service to all company can provide the information necessary to allow a customer to make an informed customers who request a quotation from us. The knowledge and expertise held within the decision regarding the type of Sewage Treatment system or Ground Source Heat Pump they company can provide the information necessary to allow a customer to make an informed require. decision regarding the type of Sewage Treatment system or Ground Source Heat Pump they require. In 2010, H.D. Services installed a 20kW Open -‐

Loop Ground Source Heat Pump at this barn In 2010, H.D. Services installed a 20kW Open -‐ conversion for holiday lets in Buckinghamshire. Loop Ground Source Heat Pump at this barn The water is used for consumption via filtration, conversion for holiday lets in Buckinghamshire. heating and hot water via the heat pump and The water is used for consumption via filtration, irrigation/cattle troughs via a harvesting tank. heating and hot water via the heat pump and The owners happily allow us to show interested irrigation/cattle troughs via a harvesting tank. parties this site for reference. The owners allow us to show interested parties this site for reference.

In 2012 H.D. Services completed the installation of a 26kW three-‐phase Open-‐Loop Ground In 2012 H.D. Services completed the installation Source Heat Pump at this new build property in of a 26kW three-‐phase Open Loop Ground Buckinghamshire. This was part of a Source Heat Pump at this new build property in development of three properties, all of which Buckinghamshire. This was part of a have Open-‐Loop Ground Source Heating development of three properties, all of which Systems installed. A full case study follows. have Open Loop Ground Source Heating Systems installed. A full case study follows.

H.D. SERVICES TRACK RECORD & CASE STUDIES In H.D. installed 26kW Open-‐ At 2012, a site in Services Berkshire, H.D. a Services was Loop Ground Source Heat Pump at this self-‐build instructed to install a sewage treatment system, project in Hertfordshire, having initially been water supply borehole, 26kW Open Loop ground invited to quote for cleaning a borehole source heat pump and surface water soakaways soakaway. After visiting detached site we house. secured a for use in this 4 bedroom The contract to design and install the sewage idea was for the property to be as self-‐sufficient treatment provide a potable as possible. system, The client benefits from a water supply and install the heat pump and all supply borehole that feeds the domestic supply, associated soakaways. The client benefits from a the heating and hot water systems and the water supply borehole that feeds and the domestic harvesting tank. Maintenance servicing supply, the heating and and hot water systems and contracts are in place the client benefits the harvesting tank. Maintenance and servicing from a single point of contact and receipt of the contracts are in place and the client benefits domestic RHI. A full case study follows. from a single point of contact. A full case study follows.

We have ongoing domestic installations in Berkshire, Buckinghamshire, Hampshire, We have ongoing domestic installations in Berkshire, Buckinghamshire, Hampshire, Hertfordshire, Oxfordshire, Sussex, and Central London. Hertfordshire, Oxfordshire, Sussex, and Central London. H.D. Services have also completed small commercial (non-‐domestic) installations (<45kW) at H.D. Services have also completed small commercial (non-‐domestic) installations (<45kW) at churches in Buckinghamshire and Hampshire. churches in Buckinghamshire and Hampshire. We have two reference sites available for viewing, please contact us for further information. We have two reference sites available for viewing, please contact us for further information.

H.D. SERVICES TRACK RECORD & CASE STUDIES

‘Green Apple Award’ winning development utilises water supply boreholes to provide drinking water, grey water and heating and hot water.

At a site in south Buckinghamshire, open-‐ loop ground source heat pumps use At a site in south Buckinghamshire, Open Loop ground source heat pumps use water from the chalk aquifer to provide the renewable heat for heating and hot water systems. This water can also be used for domestic consumption (subject to analyses and suitable filtration) and as a grey water supply. In 2011 the company were approached by Acanthus Developments and asked to tender for the installation of three water supply boreholes to serve each of three prestige properties. Closed-‐loop ground source heating was being considered, however the availability of a reliable ground water supply from the chalk aquifer and our experience in the open-‐loop installation of Open Loop ground ground source heating systems, resulted in H.D Services The Manor being contracted to install three heat The Manor pumps as well as the water supply boreholes. The development went on to win a Green Apple award in recognition of the Sustainable Nature of the development and the Architectural Design Excellence of the properties. Using the postcode of the site to assess the hydro-‐geology, a quotation was submitted for the construction of both the water supply borehole and soak away and the installation and Using the postcode of the site to assess the commissioning of the heat pump at each location. The deal was that both the water supply hydro-‐geology, a quotation was submitted borehole and soakaway were constructed and water pumped from one to the other to for the construction of both the water prove the worthiness of both before any payment was requested. It was several months supply borehole and soak away and the later, once the construction of the properties had been completed that the heat pumps installation and commissioning of the heat were installed and commissioned. Each installation is covered by a 5 year workmanship pump at each location. The deal was that warranty and annual maintenance contracts have been offered. both the water supply borehole and soakaway were constructed and SAP water Working from building plans and reports, the quote allowed for the supply and pumped from one to the other to prove the installation of SolEco three-‐phase heat pumps; two 18-‐kW and one 26-‐kW. The boreholes worthiness both before any payment were drilled of using a cable-‐percussion rig as it does not allow the aquifers or fissures to was requested. It was several months later, become polluted with sediment -‐ this method is preferred by the Environment Agency and once the construction of the properties had water companies when drilling into the chalk aquifer. To protect the abstractions from been completed that the heat pumps were derogation by a third party, borehole logs were submitted to both the British Geological Open-‐Loop installation diagram installed and commissioned. Each Survey and Environment Agency. installation is covered by a 5 year workmanship warranty and annual maintenance contracts One advantage of the many offered by an Open Loop ground source heat pump installation have been offered. is that the discharge water can feed a harvesting tank, from where it can be pumped for garden irrigation or other ‘grey-‐water’ uses. Harvesting tanks that are connected to a

H.D. SERVICES TRACK RECORD & CASE STUDIES

rainwater system will quickly run dry during a prolonged dry spell, whereas a harvesting tank fed from a heat pump will replenish whenever the heat pump is in operation. Work commenced in early 2012 and the boreholes were drilled just after the original H.D. SERVICES TRACK RECORD & CASE STUDIES

buildings had been demolished. The borehole pumps were left in-‐situ to provide build-‐ water until the houses had been erected, after which the heat pumps were installed and rainwater system will quickly run dry during a prolonged dry spell, whereas a harvesting commissioned. tank fed from a heat pump will replenish whenever the heat pump is in operation. From the experience gained on the contract, Work commenced in early 2012 and the boreholes were drilled just after the original plumbing and electrical guides were designed buildings had been demolished. The borehole pumps were left in-‐situ to provide build-‐ and are handed to the client for distribution to water until the houses had been erected, after which the heat pumps were installed and their contractor. These have been written by a commissioned. fully qualified professional and in conjunction with the heat pump manufacturer, they inform From the experience gained on the contract, the heating system installers of plumbing and distribution electrical guides were designed both the plumbing requirements and the and are handed to the client for distribution to electrical requirements of the heat pump. This their contractor. These have been written by a ensures that while work is and continuing on the fully qualified professional in conjunction build, those on site have the information to with the heat pump manufacturer, they inform hand regarding system requirements which the heating distribution system installers of provides confidence that all required connections are in the correct location, making both the plumbing requirements and the installation and commissioning of the heat pump a straightforward process. electrical requirements of the heat pump. This ensures that while work is continuing on the Work was completed in late 2012 and all build, three those heat pump installations commissioned on site have the information to successfully and stregistered with the Although the whole job, from quotation to A plant room the development site MCS. hand regarding system requirements which commissioning, took over a year we worked closely with the client and other contractors to provides confidence that all required connections are in the correct location, making the ensure that the process was as straightforward as possible. installation and commissioning of the heat pump a straightforward process. In recognition of its Sustainable Nature and Architectural Design Excellence, the Work was completed in late 2012 and all three heat pump installations commissioned development won a Green Apple Award. successfully and registered with the MCS. Although the whole job, from quotation to commissioning, took over a year we worked closely with the client and other contractors to ensure that the process was as straightforward as possible. In recognition of its Sustainable Nature and Architectural Design Excellence, the development won a Green Apple Award.

H.D. SERVICES TRACK RECORD & CASE STUDIES H.D. SERVICES TRACK RECORD & CASE STUDIES Single installation company can design, construct and install a bespoke Sewage H.D. Services Ltd Open Loop GSHP installation in Berkshire helps company to Treatment Plant, Water Supply Borehole, Open-‐Loop Ground Source Heating System win RHI Installer of the Year -‐ South East at the Green Deal & ECO Awards and Surface Water Soakaways. 2015.

At a site in Berkshire, H.D. Services Ltd. was instructed to install a Sewage Treatment At a site in Hertfordshire, H.D. Services Ltd. was instructed to install a Sewage System, Water Supply Borehole, Open Loop Ground Source Heat Pump and Surface Treatment System, Water Supply Borehole, Open-‐Loop Ground Source Heat Pump and Water Soakaways for use in a 4 bedroom detached house. The idea was for the Surface Water Soakaways for use by a single domestic dwelling. The idea was for the property to be as self-‐sufficient as possible. property to be as self-‐sufficient as possible. Utilising water from the chalk aquifer to provide a grey water supply, a potentially potable supply and the heat source for an H.D. Services Ltd were asked to quote for the open-‐loop heat pump, this project offered many interesting challenges. Sewage Treatment System; a complete heat pump installation (water supply borehole with pumps, heat pump, harvesting tank and soakaway); and a surface In January 2011, H.D. Services Ltd were approached to water soakaway. Using the postcode of the site we quote for cleaning a failed soakaway at the were site. able to confirm the hydro-‐geology and a During the site visit the client outlined the project quotation was submitted. details which comprised the construction of a new drilling works were undertaken by our sister domestic property. It was mentioned that All H.D. company, H. D. Drilling Ltd, who have been members Services Ltd and H.D. Drilling Ltd could provide a water of the Well Drillers Association since 1988. supply, sewage treatment system, heating system and surface water soakaways. Following this discussion H.D. Services Ltd were asked Water Supply Borehole and Surface Water Soakaways: to quote for the Sewage Treatment System; a complete heat pump installation (water supply The water supply borehole was drilled using a cable-‐percussion rig -‐ the method preferred by the borehole with pumps, heat pump, harvesting tank and soakaway); and a surface water soakaway. Environment Agency and water companies when drilling into the chalk aquifer. A duty/standby dual Using the postcode of the site we were able to confirm the hydro-‐geology and a quotation was pumping system was adopted in the borehole, meaning there is always a standby pump to act as submitted. backup should one pump fail. This method is always recommended by H.D. Services Ltd. as it means that any pump issues can be addressed without disruption to the water supply and hence the heating All drilling works were undertaken by our sister company, H. D. Drilling Ltd, who have been members system. of the Well Drillers Association since 1988.

Water was pumped from the supply borehole to the soakaway to prove the worthiness of both. Borehole logs were submitted to both the British Geological Survey and Environment Agency to protect the abstraction from derogation by a third party. Water Supply Borehole and Surface Water Soakaways: Sewage Treatment System: The water supply borehole was drilled using a cable-‐percussion rig -‐ the method preferred by the Environment Agency and water companies when drilling into the chalk aquifer. A duty/standby dual A bespoke HD-‐SM Sewage Treatment System (STS) was designed based pumping system was adopted in the borehole, meaning there is always a standby pump to act as upon the number of people that could live at the property. The final backup should one pump fail. This method is always recommended by H.D. Services Ltd. as it means effluent from an HD-‐SM STS is designed to achieve a discharge that any pump issues can be addressed without disruption to the water supply and hence the heating standard of 20:30:10 (BOD:SS:NH4) but increased standards can be system. accommodated by internal adjustments or additional chambers. Water was pumped from the supply borehole to the soakaway to prove the worthiness of both. Borehole logs were submitted to both the British Geological Survey and Environment Agency to protect the abstraction from derogation by a third party.

H.D. SERVICES TRACK RECORD & CASE STUDIES

Sewage Treatment System:

H.D. SERVICES TRACK RECORD & CASE STUDIES A bespoke HD-‐SM Sewage Treatment

System (STS) was designed based upon the number of people that could live at the property. The final effluent from an HD-‐SM STS is designed to achieve a discharge standard of 20:30:10 (BOD:SS:NH4) but Three months after this system was increased commissioned a courtesy visit accommodated was conducted by to internal confirm standards can be compliance with the design standard. All HD-‐SM’s are covered by a full 24 month extendible warranty adjustments or additional chambers. and an annual service contract is offered. Our expertise covers not only the design, supply, Three months after this system was commissioned a courtesy installation, commissioning and servicing of sewage treatment systems but also septic tank installation visit was conducted to confirm compliance with the design and modification. standard. All HD-‐SM’s are covered by a full 24 month extendible warranty and an annual service contract. Our expertise covers not only the design, supply, installation, commissioning and servicing of sewage treatment systems but also septic tank installation Open Loop Ground Source Heat Pump: and modification. Working from detailed floor plans and SAP reports, H.D. Services Ltd sized the heat pump and designed the water supply borehole and soakaway. The efficiency of both the water supply borehole and soakaway was proved by Open-‐Loop Ground Source Heat Pump: pumping from one to the other. Working from detailed floor plans and SAP reports, H.D. Services Ltd sized the Upon completion of construction of the property, the heat pump was installed heat pump and designed the water supply borehole and soakaway. The and commissioned. All H.D. Services Ltd installations are covered by a 5 year efficiency of both the water supply borehole and soakaway was proved by workmanship warranty and an annual maintenance contract is offered. pumping from one to the other.

Apart from the environmental and heat economical to an Open Loop Upon completion of construction of the property, the pump advantages was Ground Source Heat Pump, an additional benefit is that the discharge water installed and commissioned. All H.D. Services Ltd installations are covered by a 5 year workmanship can feed a harvesting tank, from where it can be pumped for garden irrigation warranty and an annual maintenance contract is or other ‘grey-‐water’ uses. Unlike rainwater harvesting tanks which only replenish when it rains and offered. We assisted the client in applying for the Renewable Heat Premium empty very quickly in dry weather, a harvesting tank fed from a heat pump will replenish whenever the Payment (RHPP) in anticipation of implementation of the Renewable Heat heat pump is in operation, meaning that the garden can be irrigated throughout the summer Incentive (RHI) in Spring 2014. regardless of hosepipe bans. It is an option which was adopted in this installation. Apart from the environmental and economical advantages to an Open-‐Loop Ground Source Heat Pump, an additional benefit is that the discharge water can feed a harvesting tank, from where it can be pumped for garden irrigation or other ‘grey-‐water’ uses. Unlike rainwater harvesting tanks which Summary: only replenish when it rains and empty very quickly in dry weather, a harvesting tank fed from a heat pump will replenish whenever the heat pump is in operation, meaning that the garden can be irrigated Work commenced in August 2012 when the water supply borehole was drilled and a pump left in situ throughout the summer regardless of hosepipe bans. It is an option which was adopted in this to provide the construction site with a water supply during the building process. Work was completed installation. in 2014. The installation benefits from a 5 year workmanship warranty, an annual maintenance contract and is in receipt of the domestic RHI. Summary: Work commenced in June 2011 when the water supply borehole was drilled and a pump left in situ to provide the construction site with a water supply during the building process. In November 2011, we returned to site to construct trenches for the pumping mains and installed the bespoke HD-‐SM Sewage Treatment System. Work was completed in June 2012 when both the Sewage Treatment System and the Open-‐Loop Ground Source Heat Pump system were commissioned successfully before the client took up residence.

KEY PERSONNEL

Mr. F. J. Harris – DIRECTOR

Since founding the company in 1984, Frank has twice served as Vice-‐Chairman of the Well Drillers Association. He is a qualified Civil Engineer and Mechanical Engineer, a Member of the Institute of Civil Engineers and a Fellow of the Geological Society.

Mrs. C. I Harris – COMPANY SECRETARY & DIRECTOR

Previously an I.T. Project Manager, Cheryl has been joint director of H.D. Services since the company was founded in 1984 and has served as company secretary since then. She takes responsibility for the financial side of the business.

Mr. P. Harris – CONTRACTS MANAGER – (GSHP)

Paul has worked for H.D. Services since 2004. Initially as a site technician and contracts engineer, he is now the Contracts Manager for the Ground Source Heat Pump department. Qualified as both a plumber and electrician, Paul is our heat pump expert and works closely with SolEco in furthering the development of their Open Loop Heat Pumps.

Mrs. R. Taylor – GSHP BUSINESS DEVELOPMENT MANAGER

Rebecca has been working for the company since 2012. She hails from a public sector background and has taken responsibility for managing the business development of the Ground Source Heat Pump division. She liaises with the industry associations (GSHPA/REA) and government offices (DECC/OFGEM) and manages the H.D. Services compliance with the Microgeneration Certification Scheme and the Renewable Energy Consumer Code. Rebecca leads our Ground Source Heat Pump marketing and publicity campaign. In 2015, H.D. Services won South East RHI Installer of the Year at the Green Deal and ECO Awards.

Mrs. J. Stevens – P.A. TO DIRECTOR

Jill has been with the company for more than 10 years as Frank’s P.A. She works closely with both directors and takes responsibility for the servicing schedule of our sewage treatment systems.

Mr. P. Coleman – DRILLING ADVISER

Peter has worked for the company since 1985. He and Frank worked together at Le Grand Well Drilling in the 1970’s, one of the largest Well Drilling companies in the country at that time. Peter has remained loyal to the company for over 30 years and is one of the most experienced percussion drillers in the UK. He semi-‐retired in 2008 and is now retained by H.D. Services as a drilling adviser and rig & plant maintenance engineer.

KEY PERSONNEL

SITE PERSONNEL Our site staff are all qualified in their various fields of expertise and include the following: Name Role Training Mr. P. Harding Site Engineer / Foreman Land Driller Mr. L. Jarrold Foreman Driller Land Driller Mr. K. Spencer Foreman Driller Land Driller Mr. B. Clayden Foreman Driller Land Driller Mr. S. Warren Drilling Assistant Land Driller Mr. R. Conway Construction Site Operative Plumber Mr. A. Collins Construction Site Operative Electrician Mr. E. Leigh Construction Site Operative Electrician

AREAS OF OPERATION

Denotes areas H.D. Services work in.

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CONTACT DETAILS

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H.D. SERVICES LTD. Thorne Barton Farm Chesham Road Ashley Green Bucks HP5 3PQ Tel: 01494 792000 Fax: 01494 791927 E-‐mail: enquiries@thehdgroup.co.uk Web: www.hdservicesltd.co.uk For more information on heat pumps, please visit: www.hdgeothermal.co.uk H.D. DRILLING LTD. Thorne Barton Farm Chesham Road Ashley Green Bucks HP5 3PQ Tel: 01494 792000 Fax: 01494 791927 E-‐mail: enquiries@thehdgroup.co.uk Web: www.hddrillingltd.co.uk You can also find us on LinkedIn and Facebook .