and air-conditioning system

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heating, ventilating, and air-conditioning system (HVAC system)

A mechanical system designed to satisfy the environmental conditions within an air-conditioned space, usually controlling the temperature, relative humidity, distribution and movement of air, and air cleanliness. Types of systems differ, but a basic system often includes an outside-air intake, chiller, preheater, dehumidifier, heating coil, humidifier, fans, duct-work, air outlets, and air terminals.
References in periodicals archive ?
However, the proposed heating, ventilation and air-conditioning system ``is much more costly to purchase and install than the types of equipment that are used in district schools at the present time,'' his report said.
The research team is able to remotely track vital data in real time, such as temperature, humidity, indoor carbon dioxide concentrations, air velocity, sound levels, and energy use, and they can compare this information to data from portable classrooms with conventional heating, ventilation and air-conditioning systems.
Invensys Climate Controls, a world leader in the automation and control of heating, ventilating and air-conditioning systems, has teamed with HVAC manufacturer Lennox Industries to develop an unprecedented "smart," Web-addressable HVAC control system for the home that improves the efficiency and effectiveness of space heating and air-conditioning appliances.