A trademark of the American Air Conditioning Contractors of America (ACCA). This publication covers the proper design, installation, maintenance, and repair of ductwork.

A trademarked publication of the American Air Conditioning Contractors of America. This ACCA procedure covers the method for calculating heating and cooling requirements (load calculation) for single-family detached homes and mobile homes.

A trademarked ACCA publication covering the design, installation, and commissioning of a residential HVAC system.

A heating and air conditioning system comprised of components that have been certified to perform at specific comfort and efficiency levels when used together and according to design and engineered specifications. Contrast with "field matching".

As used in air conditioning and heating, the material in an air filter that traps and holds the impurities until it is cleaned or replaced.

A control system that uses computer logic to operate and monitor an air conditioning system. Microprocessor controls are commonly used on modern precision air conditioning systems to maintain precise control of temperature and humidity and to monitor the units operation.

Also called Ductless Mini Split. This system is meant for areas that traditional systems cannot reach, they are not a substitution but an addition to. But this is not your window Heat Pump or A/C, it modulates both power and amperage to heating and cooling demand, and is ranked among the highest efficiencies when compared with traditional system,

As it applies in air conditioning and heating, mold is an undesirable growth within, on, or around HVAC equipment, usually associated with improper moisture or indoor humidity levels. Molds are undesirable because they can cause or increase health problems and odors. The spores of mold can become airborne. Overall the growth of mold can be retarded by proper equipment installation and maintenance. Mold spore growth can be discouraged by keeping proper indoor humidity levels.