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 entire process is called a cooling cycle, and it’s vital to how your HVAC system provides comfortable indoor temperatures. So if you’ve noticed your AC keeps shutting off, comfort can be tougher to maintain.
There are several reasons why your air conditioner keeps shutting off, but one of the most common reasons is short cycling. This aggravating HVAC problem involves cooling cycles that aren’t long enough to make efficient 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 offer a few more separate reasons your cooling equipment keeps shutting down.
Your Air Conditioner Might Be Short Cycling
When an air conditioner short cycles, it turns off before reaching the set 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 will extend the time required to cool your home while putting extra strain on important components. If left alone too long, short cycling can even lead to premature equipment failure.
5 Problems That May Lead to Your Air Conditioner Short Cycling
Another frustrating aspect 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.
- Overheating: Too much heat can ruin components inside your air conditioner. Safety features will often detect overheating and shut the AC off to protect sensitive parts. But if the original problem hasn’t been resolved, this process just starts over again.
- Poor Airflow: Your HVAC system needs steady airflow to work at safe, optimal temperatures. When the air filter or ductwork is clogged, poor circulation can47] lead to overheating, which means short cycling.
- Wrong AC Sizing: HVAC equipment should be properly “sized” for your home. This means that the power of your air conditioner fits the cooling needs of your home. An air conditioning system that’s too large will dump cool air too quickly, tricking the system into turning off early before the entire house is cooled down.
- Dirty Condenser Coils: This component dissipates the heat collected from inside your home. When the coils become too dirty, this heat can end up in the air conditioner. The high levels of heat may be enough to trigger a premature shutdown.
- 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. Keeping your thermostat too close to cool air can fool it into thinking the temperature has been reached earlier.
Short cycling is an annoying 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.
A Few Other Reasons Your AC Keeps Switching Off
Electrical Malfunction: Any number of malfunctions with the wiring or an electrical switch could lead to consistent shutdowns. Maybe the wiring is old or damaged, but electrical problems may need professional care for a prompt, safe solution.
Compressor Failure: This crucial component applies pressure to force heat out of the refrigerant before it’s removed from your home. When the component fails, a safety switch will 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 parts 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 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 shuts off the AC before half of it is running underwater.
If your air conditioner is short cycling, call a professional technician with Strand Brothers 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 512-592-3072 today.