Palm Desert, CA
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HVAC Terminology

HVAC Terminology

A glossary of common heating and cooling terms.

SEER

Seasonal Energy Efficiency Ratio — a measure of cooling efficiency over a typical cooling season.

AFUE

Annual Fuel Utilization Efficiency — measures a furnace's efficiency in converting fuel to energy.

HSPF

Heating Seasonal Performance Factor — measures the efficiency of heat pumps.

BTU

British Thermal Unit — the amount of heat required to raise one pound of water by one degree Fahrenheit.

Ton

A unit of cooling capacity equal to 12,000 BTUs per hour.

Refrigerant

The fluid in an AC system that absorbs and releases heat to cool your home.

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