Cooling Info From Warmair.net
Air Handlers
Build a sheet metal box, put two holes in opposite ends of the box, then put
a fan in the box. This is an air handler in basic form. Add a
hot water coil and it becomes a fan-coil for hydro-air application.
Add an evaporator coil and it becomes the indoor unit for central
air or a heat pump. Put in electric heating elements, circuit
breakers and controls and it becomes an electric furnace.
By today’s tradesman lingo, an air handler usually refers to a unit in use
for central air conditioning or for a hydro-air system.
Without the risk of fire from combustion or high temperature heating elements,
an air handler offers the versatility of safe installation when
in contact with combustibles. An air handler also offers multi-position
application. Most manufactures build a machine that can be installed
for vertical, horizontal, or counterflow (downflow) use.
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