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Reasons Your AC Keeps Turning On and Off

If your air conditioner keeps turning on and off your HVAC system is most probably short cycling. An AC system may turn on and off repeatedly due to soiled, broken, or failing parts or for assorted mechanical or electrical grounds.The term short cycling refers to when an AC and Heating system’s cooling cycle ends up prematurely only to turn on again after a short time. Relying up on indoor and outdoor conditions, this could mean that your system turns on and off every 15 to 20 minutes.

Redundant Wear and Tear

An air conditioner that is switching on and off periodically is bad for both homeowners and your AC system. It utilizes more power to start your AC over and over as conflicting to when it’s running smoothly as it does in longer cycles. It also causes redundant wear and tear on the mechanisms that work to turn on your AC and Heating System. This can dramatically enhance your electric bill and result in more repairs needed for your AC, so this is an issue you wish to fix as soon as possible.

Fortunately, short cycling is normally an easy fix! Learn some of the most common reasons why your air conditioner goes on and off and how you can stop your air conditioner from short cycling.

Short Cycling

When ever your AC system is short cycling, check on the thermostat. While the thermostat may appear like one small component of your whole system, this device controls the temperature of your entire home, so it’s crucial that it functions properly. If the thermostat is not sensing the temperature correctly and communicates misinformation, it will signal the air conditioning system to begin and stop frequently. If you observe your thermostat screen is blank or fading it may be low on batteries and losing power periodically. This will cause your AC system to turn on and off when your thermostat loses battery back up. Try substitution of the batteries and restarting the thermostat. If neither solution fixes your difficulty, call an HVAC professional to analyze the thermostat.

Your thermostat measures the temperature of the air around it to find out when to turn your AC system on and off. Your thermostat may have imprecise readings if it’s located:

  1. Near a window and getting direct sunlight
  2. Close to a room that’s always hotter than the rest of the area, for example the kitchen or bathroom
  3. Under the supply air vents, receiving direct flow of air

Any of these situations could cause your thermostat to get inaccurate, poor meter readings and think your house is hotter or colder than it really is. Move your thermostat to a healthier, more centralized position.

Clogged air filters are one of the most common causes of AC difficulties. A dirty air filter restricts airflow to your AC system and can cause doubled problems, considering short cycling. Keep a Check and replace your air filters if they fouled.

Dirt and Drime

If your outside AC unit is turning on and off and you haven’t performed AC upkeep in a few years. It’s obvious your AC’s condenser coils are caked in dirt and debris. Condenser coils are placed inside the outdoor AC unit and release the heat from internal areas of your home. If they’re clogged with too much of dirt and grime, your AC system could overheat and turn off often. Clean your condenser coils or have a local HVAC company perform routine AC maintenance.

Not only are these issues inopportune, but they can cause bigger troubles for your home. Always use an AC sizing calculator to approximate your AC and Heating system size requirements. Or contact a local HVAC company for a second alternative on the installation.

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