Critical HVAC Parts That You Shouldn't Ignore

Your commercial HVAC unit should be serviced annually. There are several materials that comprise HVAC systems that will occasionally need to be serviced. Learn about some of the servicing essentials that will be handled during routine inspections.


HVAC filters are responsible for filtering dust, pet dander, pollen, and other particulates that could affect the air quality at your place of business. Filters are one of the most inexpensive parts that your HVAC requires. If filters become dirty, airflow is restricted.

An HVAC contractor will change out the filters as needed. They will also indicate to you how often the filters will need to be changed in the future. The type of HVAC appliance that you own, plus how often you use the HVAC unit, will dictate the filter exchange schedule that a contractor recommends.


A ductwork system is a series of metal or synthetic tubes. These tubes are responsible for transporting heated or cooled air throughout your place of business. If ductwork becomes dirty or damaged, the air quality inside your business will be compromised.

During each annual inspection of your HVAC unit, a contractor will analyze the ductwork and clean or repair it if necessary. If any ductwork materials become damaged, the contractor will refer to the HVAC appliance model that you own. They will use this model number to guide them in ordering replacement ductwork materials.


The refrigerant that is added to your HVAC system is responsible for cooling the air when you turn on the air conditioning feature. The coolant may need to be replaced on occasion. A licensed technician will need to add refrigerant to your unit. A refrigerant leak could necessitate that more extensive work is conducted.

If you ever notice that the air that comes from your HVAC isn't as cool as it normally is, it is time to have your HVAC appliance serviced. A contractor will determine if refrigerant has been leaking, plus will make the necessary repairs.


The thermostat is responsible for regulating the temperature when your HVAC unit is turned on. This part could fail, which could lead to your HVAC unit not cycling properly. If this occurs, the unit may turn on or off or may fail to operate. A contractor will test the thermostat during a service appointment. If they determine that the thermostat cannot be repaired, they will order a new one through a licensed equipment dealer.

For more information about commercial appliance parts, contact a local contractor.