The following zone equipment types directly serve a space or zone.
Topics in this section
Active Chilled Beam
An active chilled beam consists of a heat exchanger and an integral air supply. It is normally suspended from a ceiling.
Constant Air Volume Box
The constant air volume (CAV) box is an air terminal without turndown on an air system. It typically contains a reheat coil, but this is optional.
Four Pipe Fan Coil
Fan coils provide conditioned air to an area by recirculating air through the coils. A four-pipe fan coil unit consists of a fan, air filter, chilled water cooling coil, and hot water heating coil.
Packaged Terminal Air Conditioner
A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air-conditioning system. Some PTACs are cooling-only type.
Packaged Terminal Heat Pump
A packaged terminal heat pump (PTHP) consists of a separate, un-encased refrigeration system installed in a cabinet of similar function and configuration to that of a packaged terminal air conditioner (PTAC). It uses reverse cycle refrigeration as its prime heat source.
Parallel Fan Powered Box
A parallel fan powered box has a fan that runs only during the heating mode to pull warm return air from the ceiling plenum.
Passive Chilled Beam
A passive chilled beam is normally suspended from a ceiling and consists of a heat exchanger in a housing, but does not contains an integral air supply like an active chilled beam.
Radiant Panel
A radiant panel supplies heat directly to the floor or to panels in the wall or ceiling.
Series Fan Powered Box
A series fan powered box has a fan that must run throughout the occupied mode in order to deliver ventilation air to the zone.
Unit Heater
Unit heaters are designed for use in space heating applications.
Unit Ventilator
Unit ventilators provide a controlled means of introducing conditioned outdoor air during the heating season.
Variable Air Volume Box
The variable air volume (VAV) box is an air terminal with turndown on an air system. As an option, it may contain a reheat coil.
Variable Refrigerant Flow Fan Coil
Variable refrigerant flow (VRF) systems vary the flow of refrigerant to indoor units based on demand.
Water Source Heat Pump
A water source heat pump operates like a traditional air source heat pump, but it extracts and dissipates heat by way of water instead of air.