A home's central air-conditioning system must be periodically inspected and maintained in order to function properly. While an annual inspection performed by a trained professional is recommended, homeowners can do a lot of the work themselves by following the tips offered in this guide.
Clean the Exterior Condensing Unit and Components
The exterior condenser unit is the large box located on the side of the building that is designed to push heat from the inside of the building to the outdoors. Inside of the box are coils of pipe that are surrounded by thousands of thin metal "fins" that allow the coils more surface area to exchange heat. Follow these tips when cleaning the exterior condenser unit and its inner components -- after turning off power to the unit!
According to modern standards, air-conditioning condensing units and heat pump units should have a readily accessible electrical disconnect within sight of the unit. The disconnect is allowed to be installed on or within the unit, but it should not be located on panels designed to allow access to the unit.
Make sure the condensing unit outside is sitting level.
Clean the Air Filter
Air filters remove pollen, dust and other particles that would otherwise circulate indoors. Most filters are typically rectangular in shape and about 20 inches by 16 inches, and about 1 inch thick. They slide into the main ductwork near the inside fan unit. The filter should be periodically washed or replaced, depending on the manufacturer’s instructions. A dirty air filter will not only degrade indoor air quality, but it will also strain the motor to work harder to move air through it, increasing energy costs and reducing energy efficiency. The filter should be replaced monthly during heavy use during the cooling seasons. You may need to change the filter more often if the air conditioner is in constant use, if building occupants have respiratory problems,if you have pets with fur, or if dusty conditions are present.
Cover the Exterior Unit
When the cooling season is over, you should cover the exterior condenser unit in preparation for winter. If it isn’t being used, why expose it to the elements? This measure will prevent ice, leaves and dirt from entering the unit, which can harm components and require additional maintenance in the spring.
In addition, homeowners should practice the following strategies in order to keep their central air conditioning systems running properly:
Homeowners should perform periodic inspections and maintenance to their home's central air conditioning system. It will keep it running properly and will certainly add to the lifespan of the unit.
My name is Chris Dallaglio and I'm the owner of Total Eclipse Inspections LLC. I'm a licensed Home Inspector, Radon Measurement Professional, U.S. Dept of Energy Home Energy Score Assessor, part-time blogger.