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

Each time your air conditioner turns on, it should run for a while minutes before shutting down again. The complete 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 turning off, comfort can be more difficult to maintain.

There are many reasons why your air conditioner keeps shutting off, but one of the most common reasons is short cycling. This annoying 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 review 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 shuts off before reaching the desired temperature. It may not be long before the thermostat recognizes this and instructs the AC to run again. But since there’s a problem, the air conditioner will continue to short cycle. This will extend the time necessary to cool your home while placing extra strain on key components. If left alone too long, short cycling could even lead to premature system failure.

5 Problems That Can Lead to Your Air Conditioner Short Cycling

Another frustrating part of short cycling is the number of potential 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 issue. 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 often detect overheating and shut the AC off to protect key parts. But if the original problem hasn’t been resolved, this process just starts over again.
  2. Poor Airflow: Your HVAC system needs enough airflow to run at safe, optimal temperatures. When the air filter or ductwork is clogged, poor circulation can47] 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 large will dump cool air too fast, tricking the system into shutting off early before the entire house is cooled down.
  4. Dirty Condenser Coils: This component dissipates the heat collected from inside your home. When the coils are too dirty, this heat could end up in the air conditioner. The high levels of heat may be enough to trigger a premature shutdown.
  5. Thermostat location: The thermostat should be in a central 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. Keeping your thermostat too close to cool air can trick 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 might 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 might lead to constant shutdowns. Maybe the wiring is old or damaged, but electrical problems generally require professional care for a prompt, safe solution.
Compressor Failure: This important 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 absorbs and releases heat, making it one of the most important parts in your HVAC system. A leak can be catastrophic, as the coils designed to hold the coolant are expensive to replace. It’s important to respond quickly if you suspect a leak to avoid 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 Sunbeam Service Experts

If your air conditioner is short cycling, call a professional technician with Sunbeam Service Experts. They can quickly identify 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 716-427-6807 today.