Furnace Maintenance

HVAC Maintenance FAQs

We’ve compiled a list of some facts about HVAC maintenance that you may find helpful.

• There are 23 specific problems which cause 93% of air conditioning failures and 16 of them can be prevented with proper maintenance.
• A buildup of just 1/100th of an inch of dirt or film on an evaporator coil can reduce its efficiency by 5%, and 0.042 inches of dirt can result in a decrease of efficiency of 21% (United States Environmental Protection Agency).
• A dirty evaporator coil, condenser coil or blower assembly could increase air conditioning or heat pump electrical usage by 50% or more.
• A blower wheel with lint and dust provides 15-20% less air. The result is lower efficiency. A dirty blower wheel usually indicates a dirty evaporator coil. Clean systems restore capacity and lessen run time, thereby reducing operating costs and extending system life span (Louisiana State University).
• Louisiana State University and Gulf States Utility study of five existing houses, before and after cleaning the HVAC system, resulted in an average savings of $32.76 per month (based on $0.08 per kWh) on cooling bills. In addition, 9,250 BTU’s per hour or 0.79 tons of capacity was restored and the units ran 1.7 hours less per day. Thats based on .08 per KWH …. so if your system is .12 per KWH or higher than your savings could be more!
• Pacific Gas & Electric found the average heating energy savings for locating and repairing refrigerant leaks and correcting refrigerant charge was 18.4% (heat pump systems).
• A Texas A&M University study found that a 23% refrigerant undercharge could result in a 52% efficiency loss.

In Short: Your HVAC system is responsible for approximately 56% of the energy consumption in your home, and even more if it’s not maintained properly

Active maintenance is essential to reducing electric and repair bills. Inspecting your home’s heating and cooling system points out areas of concern, but fails to provide active maintenance. Maintenance is required to keep your air conditioning, heat pump, and heating system running correctly, in addition to keeping most manufacturers’ warranties in effect.

Total Mechanical Systems is Plainville’s leading heating and air conditioning contractor.

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