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What does your AC sound like when it runs normally during summer? You first hear the fan motor turn on, and then a deep whirring sound indicates the compressor is operating. The compressor puts refrigerant under pressure so it can start the process of pulling heat from the indoor air, which the blower then sends into the ductwork.
You can expect to hear the compressor running for 10–15 minutes, sometimes longer, to reach your desired cooler temperature. When your AC was installed, it was sized so that it would run in cooling cycles of about this length.
If you notice that your AC is running for much longer than 15 minutes, or even not shutting off at all unless you turn off the cooling mode from the thermostat, you have a potential problem on your hands. We’ll examine why this might happen, and whether it means you need to arrange for AC repair with our technicians.
Dirty Air Filters
Air filters play a crucial role in your HVAC system by preventing dust, dirt, and other particles from getting into the AC. When these filters become clogged, airflow is restricted, making your AC work harder to cool your home. This can lead to longer running times as the system struggles to reach your target temperature. We recommend changing the filters every 1–3 months.
Leaky Ductwork
If there are leaks or gaps in the ductwork, cool air can escape before it reaches its destination. This forces the AC to run longer to compensate for the lost air. You’ll need professionals to locate the leaks and seal them.
Undersized AC
We mentioned that an AC must be sized so that it will be able to cool your house without having to run excessively. But amateur installers often incorrectly size air conditioners. If your AC is undersized, it will continue to run as it struggles to cool a house that’s too big for its capabilities. The only “fix” for this is an AC replacement.
Low Refrigerant Levels
Refrigerant is the lifeblood of your air conditioning system. If the refrigerant levels are low due to a leak, the AC will have to work harder to cool your home, leading to longer running times. A professional technician can check for leaks, repair them, and recharge the refrigerant to the correct level.
Dirty or Blocked Condenser Coils
The condenser coils in your outdoor unit are responsible for releasing the heat absorbed from inside your home. If these coils are dirty or blocked by debris, they can’t effectively dissipate heat. This causes the system to overwork, resulting in longer running cycles.
Faulty Thermostat
The problem may be with the thermostat itself. A malfunctioning thermostat might not accurately read the indoor temperature, causing the AC to run longer than necessary. You may need the thermostat repaired or replaced.
Aging AC Unit
Air conditioning systems have a lifespan of about 10–15 years. As they age, they become less efficient and more prone to running continuously. If your AC unit is in the upper age range for life expectancy, it’s time to consider replacing it.
If you think air conditioning repair in Fairhope will solve your runaway AC trouble, simply call the Peaden pros and we’ll find the solution you need.