Hvac tips

HVAC Savings Easy Savings   

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Turn heating and air-conditioning systems down or off when not in use (weekends/nights). This will contribute to energy savings of 10-30%.

Use “auto” setting instead of “on” setting. “On” means the system runs 24/7; “auto” means a fan will cycle only when it is heating or cooling a space Change your temperature settings. Lower thermostat to 68 degrees in winter; raise thermostat to 78 or higher in the summer. Gradually get to these levels so employees have time to adjust.

Employees may not even notice if you change your thermostat just one degree each week. Plus each degree of a higher temperature setting can save about 3% on cooling costs.

Replace air filters at least quarterly, and once a month in peak heating and cooling months. Air will be cleaner and systems will perform better.

Plug or fill any cracks or leaks (around windows, doors, outlets/switches) with weather stripping and caulking Install ceiling fans. In summer, they’ll allow AC to work less at higher, more efficient temperatures and they’ll circulate cool air; in winter, the fans will help pull warm air down and the heating system will be able to operate well at lower temperatures Open windows in the spring and fall to bring cool air in and let warm air out

Hiring an Expert  

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Inspect your thermostat. It may be overworking and costing you extra money. Have a technician recalibrate or replace it if this is the case Get a programmable thermostat: automatically controlled HVAC systems are more efficient and more dependable. Available for $50-$200, you can establish set points and cutoff times for a week and if you need to change it for an employee working overtime or when the facility is closed, you can use the manual override features.

If your facility uses large, central systems (boilers/chillers), consider getting an energy management system (EMS). They reduce energy costs by nearly 20% with a payback period of less than 4 years.

Maintenance for Your HVAC System Purchase a semi-annual service maintenance agreement (SMA) with a licensed HVAC contractor to ensure your system lasts and performs well. It’s as important as an oil change for your car! The SMA should include:      

Checking the system’s connections Adjusting temperature and humidity set points Inspecting and oiling fan motors Checking for proper airflow at the unit and each zone Checking for proper control settings and safety shut-down functions Inspecting and repairing duct leaks and insulation gaps

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Inspecting and repairing economizer operation and recommending upgrade options depending on your weather zone Inspecting and cleaning dirty heat transfer coils in heat pumps, air conditioners and chillers and straightening any bent coils Testing and repairing any leaks in the refrigerant lines and checking for proper refrigerant charge using charts specific to your system’s make and model Based on your input, adjusting programmable thermostats and time clocks to that heating and air runs only when your building is normally occupied

Hiring a Contractor You want to make sure your contractor is doing their job and doing it right. Here are some tips for making sure you find the best of the best:       

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Call and ask for testimonials from recent customers If licenses are mandatory to perform service in your area, confirm that the contractor has a valid one Request a written quote and service inclusions Request computer-generated energy- and cost-savings estimates Ensure that your contractor follows all regulatory codes and has proper insurance Request that the contractor uses environmentally safe products at your facility Look for contractors who are affiliated with programs like Energy Star, Rebuild America and the National Main Street Network. Affiliates of these programs will be up to speed with the latest EE practices and technologies.

Select a contractor that really inspects your building and understands how you use it.

Contractors should complete a thorough diagnosis and provide you with a detailed quote and maintenance proposal

Contractors should also deliver reliable and quality service, understand your current equipment and know how to install or use any required new equipment and document all performed services.

Source: http://www.asbdc-us.org/Resources/Energy_Efficiency_Pays.pdf