Employ Duct Cleaning Fort Lauderdale To Keep HVAC Cooling At Optimum Levels If you have HVAC system in your building then it is apparent that it is supported by a complex duct work because without it cool or hot air cannot be distributed to rooms. Itt is important that the ducting is of the right type and fit and is able to spread cool or hot air throughout the building without any obstruction. Over the years ducting systems are able to collect dirt and debris and store them inside the duct work, which h obviously will be obstruct air flow to certain extent.