There are many reasons why your AC system is not blowing cold air. However, there are four common reasons why your typical AC unit will not blow cool air. Keep in mind, all four reasons can be discovered during a routine pre-season inspection. Catch these problems early when the cost is low for repair and before your home is filled with unbearable heat.
1. Frozen Coils
A dirty evaporator coil will limit the flow of air. This is caused by dirty filters which restrict air flow and also allow dirt to build up on the evaporator coils causing the coils to freeze up. Occasionally, too many vents are closed to force air into specifically selected parts of the home, and this will reduce the air flow over the coil. Cleaning the evaporator coil is a job for professional AC repair technicians, like Enviromax Services. Cleaning this coil can be a problem, so this task is best left to the experts. Homeowners can help prevent coils from freezing up by changing the filters regularly.
2. The Refrigerant Level Is Low
Refrigerant can leak out of the system which can lead to the AC failing to cool the home. While an experienced Enviromax technician can fill the system with refrigerant, the system should be checked for a refrigerant leak as well. There’s a high chance that a leak may exist and even more so if the refrigerant level is low a second time.
3. The Thermostat Isn’t Working
Many homes have an outdated thermostat that fails to send the proper signal to the systems which triggers the flow of cold air. There are new high-tech thermostats available today, and they can be programmed to send various degrees of cold air at different times. These new thermostats can be used for customization and saving money on electricity bills.
4. Outside Compressor or Condenser Fan Isn’t Working
The condenser unit can become clogged with dirt and debris. This is the result of failing to clean the unit regularly to remove any material. The condenser unit fan moves the air from the home across the condensing coil. There are a number of possible problems in the condenser unit that can cause the fan to fail.
If the condensing unit fan is not working, then the compressor may automatically shut down, and a high temperature can severely damage it. If the compressor/condenser unit has power and the compressor motor appears to function properly, but the condenser fan won’t run, then the fan motor may be overheated. A repair technician should check all of the critical parts including the condenser coils. The outside condenser unit should also be thoroughly cleaned.