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Maintaining Your HVAC System

technician working on heat pump

Regular maintenance will help your system run more efficiently and prolong its useful life. According to the US Department of Energy, "heating and cooling account for about 56% of the energy use in a typical U.S. home, making it the largest energy expense for most homes." Regular maintenance can reduce this cost by as much as 30%.



Some items that need periodic attention are:

Filters
A dirty filter will prevent adequate air flow across the coils. If a filter is really dirty, ice can build up on the coil. Symptoms of a dirty filter can be reduced cooling, reduced air flow, and water from melting ice around the base of the air handler. ESA recommends changing your filter at least every three months.
Coils
Dirty coils will reduce the amount of heat exchange that can take place across the coil. Your heating and cooling system has two coils, an "evaporator coil" in the air handler inside and a "condensing coil" in the heat pump or air conditioner outside.
Symptoms of a dirty coils include icing, inadequate cooling or heating, and high electric bills.
Refrigerant
Occasionally, a system will develop a refrigerant leak. Symptoms of a refrigerant leak might include reduced cooling capacity, an outdoor unit that runs all the time, and high electric bills.



Read MorePlanned Maintenance Agreements


  • Environmental Systems Associates, Inc.
  • 9375-J Gerwig Lane, Columbia MD 21046
  • Lic. HVACR MD 01-2939