May 20, 2019

HVAC Terms Every Homeowner Should Know

As a homeowner who will deal with HVAC repair at some point, it’s a good idea to familiarize yourself with the terms an HVAC technician may use when making a repair or replacing your current system. It makes the communication process easier for both you and the technician. Below are some terms that may come up in your discussion.

Evaporator Coil

It is located inside the furnace in your home. This coil is responsible for the cooling aspect of the A/C unit. It contains refrigerant that absorbs the heat from the air.

Condenser Coil

It is a network of tubes filled with refrigerant, normally located in the external unit. It removes heat from the hot, gaseous refrigerant so that the refrigerant returns to its liquid state. 


It is a system of metal or synthetic tubes that move air from your furnace, A/C unit or ventilation components throughout your home.


It is a chemical that expands or vaporizes and subsequently produces a cooling affecting. Most A/C units use R-22 refrigerant.


SEER is also known as the Seasonal Energy Efficiency Ratio. It is a measure of the seasonal or annual efficiency of a central air conditioner (or heat pump.) It takes into account the variations in temperature that can occur within a season and is the average number of British Thermal Unit (BTUs), the international measure of energy, delivered for every watt-hour of electricity used by the air conditioner over a cooling season. The higher the unit’s SEER rating the more energy-efficient it is.

Do you live in Chester, Delaware, New Castle, or Montgomery County and have more questions? Feel free to reach out to MoreVent at 1-610-257-7702 or schedule a service online!

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