This may sound pricey, but you’ll pay even more over time if you never get your AC system serviced. A dirty or damaged AC unit can lead to some expensive utility bills![3] X Trustworthy Source Energy Star Program run by the U. S. Environmental Protection Agency and Department of Energy focused on educating consumers about energy efficiency Go to source
For electrical issues, a service technician may use a multimeter to test the electrical components in the compressor. [6] X Research source
In central air systems, the filters are typically located in the return ducts on walls or ceilings. Room and window units usually have a filter behind the grill on the front of the unit. Split systems usually have a reusable filter in a panel on the compressor. [8] X Research source
You may be able to clean the inside of your AC system depending on how comfortable you are opening your AC unit up, but you won’t be able to spot any serious issues without a service technician. [10] X Trustworthy Source U. S. Department of Energy Official site for the U. S. Department of Energy, which provides resources related to energy safety, conservation, and efficiency Go to source Any service work involving leaks, electrical problems, fan issues, or blower components will require a pro. These aren’t reasonable DIY tasks. [11] X Trustworthy Source U. S. Department of Energy Official site for the U. S. Department of Energy, which provides resources related to energy safety, conservation, and efficiency Go to source
You can either set the thermostat on a vent, or do a more precise check by testing the return and supply ducts near your central air unit. For window units, you should be able to tell if it’s working or not just by looking at it. If there isn’t any ice building up on the coils and it’s blowing cold air when you turn it on, it’s working just fine.
If this doesn’t do the trick, it’s definitely time to call a professional.
