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.
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).
When an Indianapolis reader asked if anything dould be done about the fluctuation in room temperature of 3-1/2 to 4 degrees during the course of a heating cycle with his hot-air furnace, the handyman had this answer: Such a fluctuation is not unusual, but perhaps the thermostat can be adjusted to reduce it.
Q: Should a hot-air furnace be installed in the attic?