HVAC units need yearly maintenance. IF you have a separate furnace they also require some preventive maintenance. Filters are important for keeping coils and fans clean. A good filter, pleated or permanent electrostatic, keeps your system clean and your home air free of dust, spores and allergens.
Cleaning ac coils
On a central air system condenser coils are outdoors with the compressor. Evaporative coils are indoors where the fan pulls air from the house over the coils and back into the vents. Copper coils containing pressurized coolant are surrounded by aluminum fins for protection, to direct air flow, and outdoors help with heat dissipation.
Coils need to be clean, free of dirt and debris to allow better air flow for efficiency and cooling. Dirty systems and blocked air flow put a strain on fan motors and compressors causing them to use more power and can quickly burn them out.
Best way to clean indoor coils is to vacuum them out followed by a strong bristled brush to help remove any blockage. Never use a sharp object. A household cleaner can be used but should be rinsed off. These coils may not be accessible to you depending on where the air exchanger is located. If you have been diligent about changing the air filter then the indoor coils may not need cleaning.
The outdoor condenser coils usually collect dirt in between the aluminum fins and coils. A hose with a nozzle and high water pressure is usually effective at washing out the debris. Always check for blockage before and after cleaning by shining a flashlight through the coils. Direct the water to the coils surrounding the fan, usually three sides. If you have any issues with or problems accessing the coils it is a good idea to have a professional come in to clean and check the system yearly. The cost is low, will help extend the life of your system giving improved performance and lower utility bills.
Furnces - Filters - Thermostats
Furnaces need to be vacuumed out to remove dirt, dust and carbon that forms during combustion. New furnaces have an automatic igniter and older units have a pilot light but they all have a thermostat wire leading to the igniter. This sometimes gets coated with carbon interfering with the ignition of the system so it should be cleaned. Too much carbon means the air flow going to the burners needs adjustment. If this is a forced air system you want to be sure the air filter is always clean. Always check belts, if any, and oil any lube points. Call in a pro if you suspect a problem and canít fix it.
The air filter is a key player in the system. Electrostatic filters are one of the best for removing over 90% of all dust, pollen, microbes, bacteria and pet dander. Most of this is not visible to the naked eye. Over the course of a month all this can easily clog an air filter. Once they get dirty air flow is drastically reduced and the same strains caused by dirty coils are put on the system. So if you use the system often then change or clean the filter monthly.
One last item to check is the thermostat. Most digital thermostats use batteries. They can last a few years in your home unit depending on use. Itís a good idea to check them each year and change them out if over two years old. Once they lose power your unit will not run properly or may not run at all.
Use these tips for efficiency, extended unit life, and lower utility bills. Go to Healthy Home Filters co.com to get a custom fit electrostatic air filter. The BoAir filter is a good deal with five filtering stages, highly efficient, easy to clean, low cost and can be custom made for home and business units.