The evaporator coil is a critical part of your HVAC system. Though you don’t have a lot of contact with this component, it’s hard at work keeping your Northbrook, Illinois, home comfortable. Learning more about the evaporator coil will help you understand the best way to keep your HVAC system running optimally.

What the Evaporator Coil Does

The evaporator converts refrigerant from a liquid to a gaseous state while absorbing heat from the surrounding air. The refrigerant then carries the heat out of the evaporator coil to the compressor. The blower fans in the evaporator pull hot air into the unit and blow it over the coils where it absorbs the heat. Once there’s no heat, the blower fans will keep the fresh cooled air moving and push it out of the evaporator into your home.

Common Problems

In order for the evaporator coil to function properly, it needs the right amount of refrigerant. The coil needs refrigerant through the entire length of it. If there isn’t enough refrigerant in the coil, the heat exchange is too low and the evaporator is known as being “starved.” When the evaporator coil is “flooded,” it has too much refrigerant. This means that some of the liquid will pass through without expanding.

How to Keep the Coil in Shape

Your evaporator coil will function optimally when the system’s refrigerant is properly charged. Schedule regular maintenance visits to make sure the system is charged. You should have your air conditioner tuned up once a year in the spring before you switch to cooling. Have your heater serviced in the fall before you transition to using heat for the cool weather season.

Understanding the importance of proper refrigerant levels and your system’s evaporator coil will help you make the best use of your HVAC system. Schedule regular maintenance visits to ensure that your system’s evaporator is in top shape. Contact Roberts Heating and Air Conditioning at 847-562-5292 for prompt service if you suspect your refrigerant levels are off.

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