A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Heat Pump - Conditioning unit capable of heating air by refrigeration transferring heat from one medium to another. It may/may not include a capability for cooling.

HVAC - Heating, ventilation and air conditioning. A system providing heating, ventilation, and/or cooling.

Hydrocarbon - An organic chemical compound of hydrogen and carbon in either the gaseous, liquid, or solid phase. The molecular structure of hydrocarbon compounds varies from the simplest (e.g., methane, a constituent of natural gas) to the very heavy and very complex.