Patent attributes
A high-efficiency HVAC system and method of operation, for use in a house or building, having a plurality of components, including flexible, plastic duct tubing forming supply pipes that connect an air handler and a plurality of zones to deliver supply air to the zones and return pipes that connect the air handler and the zones to re-circulate return air; the air handler having a fan assembly powered by a variable blower motor to blow supply air to the zones; a heat pump having a variable compressor powered by a variable compressor motor to direct a working fluid to and from the air handler and a variable fan motor that rotates a fan blade within the heat pump; and a circuit control system for adjusting the variable compressor motor and the variable fan motor in the heat pump and the variable blower motor in the air handler.