Why Does My AC Keep Turning Off? These Are the Most Likely Reasons

Every time your air conditioner starts up, it should run for several minutes before turning off again. The entire process is known as a cooling cycle, and it’s key to how your HVAC system generates comfortable indoor temperatures. So if you’ve noticed your AC keeps switching off, comfort can be more difficult to maintain.

There are several reasons why your air conditioner keeps switching off, but one of the most common reasons is short cycling. This irritating HVAC problem involves cooling cycles that aren’t long enough to make effective use of your air conditioner. It may keep switching off before your home has a chance to cool down. We’ll check out a few details of what short cycling is and where it starts. Then, we’ll share a few more separate reasons your cooling equipment keeps turning off.

Your Air Conditioner Might Be Short Cycling

When an air conditioner short cycles, it turns off before reaching the desired temperature. It may not be long before the thermostat realizes this and instructs the AC to run again. But since there’s a problem, the air conditioner will continue to short cycle. This can extend the time needed to cool your home while placing extra strain on key components. If left alone too long, short cycling might even lead to premature equipment failure.

5 Problems That Could Lead to Your Air Conditioner Short Cycling

Another frustrating part of short cycling is the number of possible causes. In general, a lot of short-cycling issues can be caused by overheating. But the excess heat could just be the symptom of another unknown problem. During air conditioner repair, a technician will check for a few of the most common things to start narrowing down the root cause.

  1. Overheating: Excessive heat can ruin components inside your air conditioner. Safety features will detect overheating and shut the AC off to protect key parts. But if the original problem hasn’t been addressed, this process just starts over again.
  2. Poor Airflow: Your HVAC system needs steady airflow to work at safe, optimal temperatures. When the air filter or ductwork is clogged, poor circulation could47] lead to overheating, which means short cycling.
  3. Wrong AC Sizing: HVAC equipment should be appropriately “sized” for your home. This means that the power of your air conditioner suits the cooling needs of your home. An air conditioning system that’s too powerful will dump cool air too quickly, tricking the system into shutting off early before the entire house is cooled down.
  4. Dirty Condenser Coils: This component expels the heat collected from inside your home. When the coils get too dirty, this heat may end up in the air conditioner. The high levels of heat might be enough to trigger a premature shutdown.
  5. Thermostat location: The thermostat should be in a centralized location away from a vent or the HVAC equipment itself. This ensures every room of the house has cooling for long enough to reach the set temperature. Placing your thermostat too close to cool air can fool it into thinking the temperature has been reached earlier.

Short cycling is a complicated problem ideal for the tools and knowledge of a professional technician. But there are still other reasons your air conditioner may be shutting off unexpectedly. Let’s take a look.

Some Other Reasons Your AC Keeps Turning Off

Electrical Malfunction: Any number of malfunctions with the wiring or an electrical switch could lead to a steady stream of shutdowns. Maybe the wiring is old or damaged, but electrical problems may need professional care for a prompt, safe solution.
Compressor Failure: This vital component applies pressure to force heat out of the refrigerant before it’s expelled from your home. When the component fails, a safety switch should recognize the pressure change and tell the air conditioner to shut off.
Refrigerant Leak: Your refrigerant holds and releases heat, making it one of the most important substances in your HVAC system. A leak can be disastrous, as the coils designed to hold the coolant are expensive to replace. It’s important to move quickly if you suspect a leak to prevent premature air conditioning replacement.
Clogged Condensate Line: When humidity is condensed into moisture during the cooling process, the condensate line safely drains it away. When the line or drain pan is clogged up, a float switch stops the AC before half of it is running underwater.

H2: Stop Short Cycling in Its Tracks with Norrell Service Experts

If your air conditioner is short cycling, call a professional technician with Norrell Service Experts. They can quickly determine the root cause, working toward a solution that protects the rest of your HVAC system from the wear and tear of short cycling. To schedule an appointment or request an appointment, call 205-267-0023 today.