12 Most Common Terms Your HVAC Technician May Use and What They Mean

 In Blog

Talking with your HVAC technician can leave you feeling confused. There are lists and lists out there but they can be overwhelming. Here are 12 HVAC terms and what they mean. Hopefully these will help you be on your way to making smart choices and save money. As always, please feel free to reach out to us with all your HVAC questions!

Air Handler: This is the big contraption outside of your building. It circulates air through the ductwork. It also contains the evaporator coil and other elements.

Compressor: This is the pump inside your air conditioner that makes noise because it’s increasing the pressure of refrigerant gas. It sits inside the condenser.

Condenser/Condenser Coil: This releases extra heat so that refrigerant gas can cool down.

Heat Pump: This is the other unit you often see outside your building. It uses electricity to make things cooler or warmer.

HEPA Filters: High Efficiency Particulate Absorbing Filters. These trap tiny particles in the air, thereby making your air cleaner.

Plenum: This is a piece that attaches ductwork to the air handler. 

Line set: These are two tubes called “lines” that connect the evaporation coil and condensing unit. One is small and copper for liquid. The other is large and insulated for suction.

Load Calculation: This is how much heating and cooling your space needs. Your mechanical contractor uses this to recommend what size system you need.

MERV: Minimum Efficiency Reporting Value. This is how efficient your filter is rated. The higher the better, put to hospital quality MERV16.

Register: This is the cover on the ins and outs of your ductwork. It has components that lets you control airflow.

EER: Energy Efficiency Ratio. This is how efficient your air condition is rated. The higher the SEER, the more energy and money you are saving.

Zone: Zoning systems let you control the environment of different areas of your space at the same time.

This is in no way a complete list of HVAC terms, but we do hope this list helps you better understand your system, and communicate with your HVAC technician. If you ever have any question about a word or what it means, please don’t hesitate to ask. We love working with you to find the best solutions for your HVAC needs.

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