A method of partitioning a home into independently controlled comfort zones for enhanced comfort and efficiency. Back to top

A motor that automatically adjusts the flow of warm or cool air for ultimate comfort. Ventilator

Provides two levels of heating or cooling output for greater temperature control, energy efficiency and improved indoor air quality. Upflow

An HVAC system in which some components are located inside the structure of the house and some are located outside. Split systems should be matched for optimal efficiency. Thermidistat

A specially designed compressor that works in a circular motion, as opposed to up-and-down piston action. SEER

A heating and cooling system contained in one outdoor unit. Back to top

A chemical that produces a cooling effect while expanding or vaporizing. Most residential air conditioning units contain the standard R-22 refrigerant, or Freon. Refrigerant Lines

See Condenser Coil. Particles

A family of international standards for quality management and assurance. MERV Rating

A unit of measure equal to one millionth of a meter, or one thousandth of a millimeter. Odors/Chemicals