This topic covers information related to decentralized HVAC equipment installed during construction. Decentralized HVAC equipment are stand alone automated units designed to provide heating and/or cooling to a specific room or zone within a structure.

This topic covers information related to room air conditioners installed during construction or on an as needed basis. Room air conditioners provide chilled air to a space by removing heat and humidity during a refrigeration cycle. They can be temporary or fixed appliances installed through wall or within a building opening.

This topic covers information related to computer room air conditioners installed during construction. Computer room air conditioners are specialized equipment that provide cool air and humidity control to computer control and equipment rooms.

This topic covers information related to convection heating and cooling units installed during construction. Convection heating and cooling units control air temperature using electric, steam or water. The appliance conditions a space using either convection, mechanical fan, induction or radiation.

This topic covers information related to radiators installed during construction. Radiators can be single or double pipe systems that are used in conjunction with a boiler. Water or steam is circulated through the pipes and radiates heat through a structure.

Humidity control equipment has the ability to add moisture or humidify to a space or remove moisture and dehumidify a space. Humidifiers introduce moisture to distributed air from centralized HVAC equipment, using evaporation, mist or steam.

This topic covers information related to dehumidifiers installed as part of a HVAC system during construction. Dehumidifiers remove moisture by condensing water vapors to a liquid. Water is collected, evaporates or drains to a specified location.

A fan-coil unit is simply an enclosure consisting of a fan and at least one coil. These units are available with chilled water coils and they may have hot water, steam and electric heating coils for added flexibility. The unit may be designed to be concealed or visible. In either case, the units have durable, heavy gauge steel construction.

Radiant heat refers to heat that emanates from a heated element or substance. Radiant heating systems do not rely on circulating heated air via ductwork or other means. Radiant heating units are manufactured assemblies designed to provide comfort heating through radiant heat transfer. Infrared rays are radiated from an electric or fuel-fired assembly until they are absorbed by objects -- floors, people, furniture, etc., which then transfer heat to the surrounding area.