If your air conditioner runs day and night without shutting off, or constantly cycles on and off, there are several causes for concern. Besides a sky-high utility bill, your unit is also being subject to constant wear and tear from all that unnecessary work. Here are some of the most common causes of a constantly running air conditioner.

Clogged air filter

When your system’s air filter is dirty, air flow is restricted, causing your air handler to work harder. Change your filter, making sure to choose the correct MERV value for your system.

Faulty thermostat

If your thermostat is not working correctly, your unit doesn’t know to turn off even when the desired temperature is reached. First, check the power source. Replace the batteries if your thermostat is battery operated or check the fuse or circuit breaker if your thermostat is hard-wired. If that doesn’t fix the problem, test your thermostat by placing a thermometer next to it and waiting 15-30 minutes. If the thermometer shows a different temperature from the thermostat, your thermostat may need to re-calibrated.

Dirty or blocked condenser

Remove obstructions that could be blocking air flow to your unit’s condenser (the outdoor portion of your air conditioning system), such as furniture, toys, leaves, or branches. If the flow of air is impeded by dirt and debris, a good cleaning using professional products and tools is necessary.

Dirty evaporator coil

Your unit’s evaporator coil is susceptible to a buildup of dust and dirt due to its constant exposure to airflow circulated by the blower. Call an Atlanta Air Care technician to clean your unit’s evaporator coil and be sure to schedule regular maintenance.

Low refrigerant

Low refrigerant in the system, usually due to a leak in the coils, will prevent your unit from properly cooling your space. An Atlanta Air Care technician will find and repair the leak and restore the refrigerant to the correct level.

Leaky ducts

Poor sealing and insufficient insulation (possibly due to older ductwork) can cause you to lose cool air and make your unit run constantly. If the cool air continues to escape, your space never reaches its set temperature and the system will keep running.

Incorrectly sized unit

If your air conditioning system is too small for your space, it will work hard to cool your home but will never achieve your desired temperatures. The constant wear and tear will also mean increased breakdowns and a reduced life span. At Atlanta Air Care, our certified technicians take into account a variety of factors to help you choose a unit suited for your space.

Any of the above reasons can cause your air conditioner to run more often than it needs to, which will cost you more money. We can help you get your system running smoothly and we offer amazing maintenance plans to keep it on track all year long. Call Atlanta Air Care today!