When the air conditioning unit runs 24/7, it's a costly energy drain. It also places excessive stress on the system. Here are some common reasons for a continuously running AC to help you pinpoint the problem. 

4 Issues Causing Your Air Conditioning Unit to Run Nonstop 

1. Evaporator Coil Problems 

Evaporator coils create the cool air that moves through the home. But when they're dirty, it's harder for the AC to work properly. As a result, the unit can’t reach the desired temperature and will continue to run. Also, when the air flow is restricted, the evaporator coils freeze, which causes the AC to keep working. 

2. Dirty Air Filter 

Over time the unit picks up dirt and debris, which collects on an air filter. You must regularly clean and replace these filters to prevent restricted air flow. If the AC is running around the clock, a dirty filter may be stopping the air from entering it. This lowers the amount of cold air circulating throughout the home. 

3. Incorrectly Sized Unit 

When you expand or change the home’s layout, you may need to upgrade the AC to a different size. A professional can calculate whether the current AC will work properly by performing a load assessment.

4. Faulty Thermostat

Thermostat issues are a common cause of air conditioner problems. If yours is broken, it may be forcing the AC to run nonstop, rather than shutting off when it reaches the correct temperature. Check to see whether your thermostat needs new batteries or if it’s time for a replacement.

If your air conditioning unit is experiencing any of these issues, contact the repair professionals at C & S Heating & Cooling in Wentzville, MO. Their team provides affordable furnace repairs and central heating and air services. For over three decades, they’ve been the area’s leading HVAC contractors. Call (636) 327-4238 to schedule a repair or visit them online for a complete list of services.