Air Conditioning Terms
Here is a glossary of commonly used air conditioning terms.
Straight Cool System – An air-conditioning system that includes a cooling cycle only. Gas, oil, or electric strip heating may be included in straight cool systems.
Strip Heating (or Resistance Heating) – A form of heating, where air is blown over electrically heated metal coils and circulated into the living space.
Heat Pump System – Cooling and heating system that provides a cooling cycle during the summer and a heating cycle during the winter.
SEER (Seasonal Energy Efficiency Ratio) – A measure of the average annual cooling efficiency of an air conditioner or heat pump. We recommend a minimum SEER of 14.0.
HSPF (Heating Seasonal Performance Factor) – A measure of the average annual heating efficiency of a heat pump. We recommend an HSPF of greater than 7.7.
The higher the SEER or HSPF, the more efficient the model.
These are units of measure that determine an A/C system’s size:
BTU (British Thermal Unit) – Used to describe how much cooling capacity a business needs.
Ton – A measure of the size or cooling capacity of an air conditioner. One ton is equal to 12,000 BTUs.