A compressor is the pump that moves refrigerant

A condenser is the part of an air conditioning system that expels unwanted heat. In a split system

Dampers are movable plates that are installed in air conditioning ducts which open and close to control air flow. They are needed to change where air is distributed to in zoned systems

Abbreviation of 'decibel', the unit for measuring sound power (volume).

A ducted system is one that provides cooling to multiple rooms through a series of ducts, which are usually installed in the roof.

An evaporative system provides cooling by drawing air across a series of wetted "pads". Water on the pads evaporates as the air flows over it, cooling and humidifying the air.

The evaporator is the part of the air conditioning system that absorbs heat from the space being cooled. In a split system

A heat load calculation is the process a licensed contractor goes through to determine the amount of cooling required for a space. It takes into account a number of factors including the area being cooled, the physical properties of the building, its orientation, shading, insulation and local climate.

Acronym for 'heating, ventilation and air conditioning'.

Any material that slows down the transfer of heat.