The transfer of heat directly from one surface to another (without heating the intermediate air acting as a transfer mechanism).

A substance that produces a cooling effect. It’s used in most air conditioning and cooling systems.

The SEER (Seasonal Energy Efficiency Ratio) rating of a unit is the cooling output during a typical cooling-season divided by the total electric energy input during the same period. The higher the unit’s SEER rating the more energy efficient it is.

Seasonal Extreme Environmental Test. This is the American Standard testing facility for heating and air conditioning systems, where the equivalent of five years of operation is condensed into 16 weeks of testing under harsh conditions. American Standard Heating & Air Conditioning wants to ensure your new system will be as reliable as possible.