A Clean HVAC System Means Lower Energy Costs

A study to develop instruments for field testing to measure the energy usage for HVAC (Heating Ventilation and Air Conditioning) systems was commissioned from NADCA (National Air Duct Cleaners’ Association) and is being carried out through the University of Colorado. The idea suggests the idea that HVAC system pressure drops , and savings on energy are inextricably linked.

Researchers are hard at work creating a computer model of the field testing instrument in a variety of ways, including the standard HVAC components sizes and how you are in the Air Handling Unit and associated ducts are located situated in the garage, basement or attic and the location of the physical location according to the climate zone, as well as other factors.

The study is progressing from computer simulation ac coil cleaning to full-scale laboratory research that includes individual HVAC components , including the cooling coil, filter return and supply air ducts. The lab work has provided credit and confirmed computers model.

The initial results are staggering. The computer model has shown that the filter types can impact the energy efficiency of an HVAC system about five percent. In other words, not keeping your filter clean and allowing it to get blocked up resulted in a staggering 20% energy efficiency loss. If you have cooling systems that allow the coil to run for longer than a year between cleaning , you should be prepared for a 15 percent increase in energy losses. The largest energy wasteper of all is leakage losses in ducts in both return furnace cleaning service and supply air ducts. A loss of 10% was used as a reference however studies have shown up to 40% losses in an typical home. This led to a 45% reduction in energy.

In the present, the university of Colorado is completing their lab tests. The complete report is scheduled to be released in the year 2010. The report, when finished, will comprise temperature, pressure loss as well as relative humidity and air circulation at various crucial places throughout the laboratory HVAC system.

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