People rely on HVAC systems year-round to enjoy comfortable indoor climates. Schedule regular service with HVAC contractors to keep your system in top shape and avoid inconvenient breakdowns. You must also understand how your unit works so you can maintain its components. Here is a brief guide to some of the elements that work together to regulate temperatures.

What Does an HVAC System Require to Function?

1. Refrigerant 

Refrigerant is the fluid that runs through the system’s refrigerant lines, absorbing heat from indoor air and releasing it outside. The temperature exchange process keeps the unit cool during operation, so low refrigerant levels can cause overheating.

Refrigerant leaks are emergency issues because the liquid contains toxic chemicals. Excessive vibrations in the system, sometimes a result of worn-down ball bearings in the fan, can cause leaks. Formic acid produced by damaged copper coils can also dissolve refrigerant lines and cause leaks.

2. Compressor 

The compressor is located in the outdoor unit. When refrigerant enters this component, it heats and pressurizes the liquid to circulate it throughout the system.

The compressor ensures there is adequate pressure to remove and expel heat. It is an intricate part, so having an HVAC contractor replace the entire system may be more cost-effective than repairing it when it fails.

3. Condenser 

The condenser is also located in the outdoor unit. Once the refrigerant is compressed, it moves into the condenser coils. A large fan situated behind the coils pushes warm air out and away from the unit.

You must routinely clean the condenser coils, as dirt and dust can accumulate and block airflow. If the fan fails, the condenser can fail. During a routine tuneup, an HVAC contractor will ensure the fan is in top condition to prevent this issue.

4. Evaporator 

These coils heat the refrigerant as it moves indoors, transforming it from liquid to gas. The cold refrigerant can then absorb more heat and transfer it outside.

During a tuneup, a contractor cleans and inspects the evaporator coils, as these can wear out due to the refrigerant’s corrosive properties. These parts may also fail due to age or overheating, particularly if the unit’s air filters are dirty and inhibit circulation.

If you’re a Summit County, OH, resident who needs HVAC maintenance or repairs, turn to Brandon Heating & Air Conditioning. Located in Stow, this HVAC contractor has served homeowners throughout the community for over 25 years. Call (330) 686-9828 to schedule an appointment, or visit their website to learn more about how they will help you.