May 01 2018 0comment

Why Won’t My Air Conditioner Kick Off?

We haven’t had too much warm weather yet this year, but if you’re already noticing your air conditioner running for extended periods of time without kicking off, you should take care of the problem now. Air conditioning units that regularly cycle on and off or that stay running all day and night are a cause for concern (and bad news for your energy bill).

The Most Common Causes of an Air Conditioner That Won’t Turn Off

  • A Dirty Evaporator Coil: If you didn’t have your unit serviced before turning it on for the year, your evaporator coil might be caked with dirt, debris and yard clippings. The debris on the evaporator coil will impede the cooling process and make your air conditioner work even harder to keep things cool. Even if your coil was only cleaned a couple of months ago, it could be dirty again.
  • A Frozen Evaporator Coil: If your air conditioner is blowing warm air from supply vents but also running nonstop, the coil may have frozen. Turn the unit off entirely and call a technician right away to prevent more damage to the system.
  • Clogged Air Filter: When the air filter is full of dirt and debris, the flow of air will be heavily restricted. This can cause the AC to function poorly and constantly run in an attempt to cool the home.
  • Too-Restrictive Air Filters: If you just installed a new air filter on your air conditioner and it is an allergen filter, it might be too restrictive for your AC unit. If you aren’t getting enough flow, choose a filter with a low MERV value.
  • Low Refrigerant Charge: Without enough refrigerant in the system, your air conditioner will never be able to cool your home. The AC will keep running and working hard, but it won’t make much progress.
  • A Broken Thermostat: A thermostat that is malfunctioning won’t tell your air conditioner that it’s time to turn off when the right temperature is achieved. If the temperature in the space is below the point you set it at, the thermostat might need to be replaced.
  • Leaky Ducts: Energy loss through duct leaks is very common in homes with traditional air conditioner units. Have your ducts inspected and checked for leaks at the joints and along the length of the ducts.

Energy Efficient Ductless Systems from Ductless America 

Ductless America sells, installs and maintains versatile Mitsubishi ductless systems designed to keep your family comfortable all year long. Our systems are flexible and able to meet the needs of numerous homes, businesses and buildings. If you are interested in learning more about our zoned comfort solutions, give us a call today at 800-815-4494.

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