Why Does My Air Conditioner Keep Turning Off?

Does your air conditioner recurrently turn on and off? Then worry no more. This is a common problem referred to as short cycling.

Not only is short cycling irritating, but it’s also costly. When this occurs, you are advised to seek professional air conditioner service to solve the problem before it escalates into a major issue.

Causes of short cycling:

  • Evaporator coils issues: When the AC’s evaporator coil accumulates dirt, condensation may occur, and this triggers ice formation. As a result, the system has to work hard to thaw the coil. Consequently, the AC goes off sooner due to overheating.

  • Refrigerant problems: If the refrigerant levels are low due to a hole on the line or a metering problem, the cooling process can be disrupted and this, in turn, can prompt short cycling.

  • Incorrectly-sized air conditioner: The efficiency of an AC in a given home or space is hinged on its output. If the output is too high for the cooling load placed on it, the AC will hit the set temperature too fast and turn off. While this is seemingly beneficial, it takes a toll on the equipment and provides ineffective cooling.

The negative impact of short cycling

Your AC can short cycle for even months without any apparent technical damage. But here is what can happen if you don’t identify and fix the problem quickly:

  • Increased humidity: The AC is supposed to regulate heat as well as humidity. When an AC’s output is too high for a given space, it reaches the set temperature very fast.

    Conversely, since the AC doesn’t run for long, it may fail to remove humidity. Increased humidity creates a conducive environment for the growth of mould and mildew.

  • Higher energy costs: Every time the AC goes on, it consumes energy. The more frequently it turns on, the more power it consumes. In effect, short cycling increases your energy bills. And since short cycling leads to inefficient utilization of the AC’s output, you may end up paying exaggerated energy bills.

  • Worn components: A well-maintained AC typically lasts for about 10-15 years. But if the AC continually goes on and off in short cycles, it wears out the compressor (which is the most expensive component) much faster.

Easy fixes for a short cycling AC

  1. Check and adjust thermostat settings
  2. Check and adjust the timer
  3. Check thermostat location – the thermostat is where the AC senses room temperature. Ensure it is not placed close to a window or the AC vent.

However, if you notice the AC is still short cycling even after taking these measures, you need to call a professional air conditioner service provider.

How to prevent short cycling

The possibility of short cycling highlights the importance of proper sizing of AC before installation and regular maintenance. The output of the AC you choose should be hinged on the size of your home. This is a difficult choice because there are so many aspects involved, including:

  • The level of insulation in the home
  • The number of occupants in your home
  • Climate
  • The style and size of your home
  • The effectiveness of other systems in your house

In short, to get it right, you need to work with a professional air conditioner service expert. Don't worry! Quick Air is here to help you with fixing all the air conditioning issues quickly. We can provide you the same day service by expert licensed technicians at an affordable price. Just give us a call on 1300 730 896