AC Runs All Day Long? Give These Simple Service Tips A Try

1 July 2019
 Categories: , Blog


If your air conditioner runs all day long, you have more to worry about than just high electric bills. Your struggling AC could break down this summer and make life miserable for everyone in your home. Don't allow your AC to fail on you. If you follow the service tips below, you may be able to get your AC back on track today.

Take a Good Look at Your Evaporator Coil

One of the most prevalent reasons cooling systems run nonstop is a dirty evaporator coil. The evaporator coil is located inside your cooling system's air handler. The main function of the evaporator coil is to absorb heat from the air circulating through your house and transfer it to the refrigerant, or coolant, traveling to your outdoor condenser coil and compressor. If the coil fails to absorb heat or clogs up with dust, it can make your cooling system run nonstop.

If you rinse off the evaporator coil, you may be able to slow down your running cooling system. Follow the steps below:

  1. Take a second to switch off your cooling system. There should be a small control switch located inside the closet housing your air handler. If you can't locate the switch, turn off your thermostat.
  2. Fill a squirt bottle with plain white vinegar and clean tap water. The solution may vary, but you can use 1/2 vinegar and 1/2 water for this job.
  3. Remove the air filter covering the evaporator coil. You can exchange the dirty filter for a new one after you clean off the coil. If the coil sits behind an access plate, remove it with a screwdriver.
  4. Place a thick plastic sheet or tablecloth beneath the coil. 
  5. Squirt the surface of the coil with your cleaning solution. The surface of the coil is extremely delicate, so avoid pressing the nozzle of the bottle directly onto the coil. 
  6. Saturate the coil until it appears clean. The debris should run off the coil and onto the sheet or tablecloth.

Allow the solution to evaporate before you recover the coil. Turn your cooling system back on and wait. If the system continues to run nonstop, you may need to call an air conditioning repair contractor for further help. There could be something going on with other areas of your cooling system.

Give Your Condenser Unit a Professional Checkup

Air conditioning systems can also run nonstop if the compressor and condenser coil are in danger of failing. The compressor and condenser coil, which sit inside the condenser unit, should process and expel the heat circulating inside your system's coolant. If something goes awry or wrong with the compressor or coil, it can cause adverse problems with your entire cooling system. 

An AC repair contractor can troubleshoot the compressor and condenser coil to see if they have the following issues:

  1. missing or damaged electrical contacts and valves
  2. clogged or covered with dirt and plants
  3. worn down or on the verge of wearing down

If your condenser unit has a bad compressor, it may be a good or wise idea to replace the entire unit, particularly if it's already past its lifespan. If you're still not sure if it's wise to replace the unit, a contractor can discuss the best route to take with you. 

If nothing is wrong with the compressor, a contractor may examine various other parts of the condenser unit that may potentially cause it to run nonstop, including the AC capacitor or power source. If a contractor diagnoses problems with the capacitor, they may choose to replace it for you.

For more information on how to stop your AC from running nonstop, contact a service technician today.