hot-air furnace

hot-air furnace

[′hä¦der ′fər·nəs]
(mechanical engineering)
An encased heating unit providing warm air to ducts for circulation by gravity convection or by fans.

hot-air furnace

A heating unit enclosed in a casing from which warm air is circulated through the building in ducts by gravity convection or by fans.
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References in periodicals archive ?
The noise comes from the hot-air furnace room, but most is from the Rinnai wall-mount water heater.
In addition, the water jacket provides protection from overheating of the firebox, a design feature not available in a hot-air furnace. Most wood boilers offer domestic hot water coils and coal grates as options.
The price range for an average 100,000-Btu hot-air furnace is generally between $2,000 and $3,000 installed (larger units are more expensive).
The building is so immense that it requires seven new, forced hot-air furnaces to effectively heat it.