PREHEAT
The Duct Heater is used to temper air entering the system (such as make up air) prior to the other processing of the air.

REHEAT
The Duct Heater is used to raise the temperature of previously conditioned air. This could be for zone temperature control or for the purpose of humidity control.

SUPPLEMENTAL OR AUXILIARY HEAT
The Electric Heater provides supplemental or emergency heat to meet temporary heating loads. Electric Heaters are often used to help heat pumps to meet peak heating loads. The Electric Heater may be an alternate heat source to other heating systems such as solar, gas, oil, etc., to be used as an interim when those systems shut down.

ELECTRIC HEATERS ARE COST EFFECTIVE

The initial savings in construction cost, material cost, and Electric Heater flexibility may offset "apparent" lower operational costs of other systems for many years.

Consider:
No chimneys, stacks or flues to build* No outside combustion air ducting* No floor space for fuel storage* No fuel tanks or piping* No advance investment for anticipated fuel needs* No fuel investment carry-over from season to season* No "fireproof room" for combustion equipment* No special heating system maintenance* Simplified installation and control* Lower initial equipment cost* Exact sizing of heating equipment* Units can be staged to produce partial heating* The ability to heat (or not to heat ) zones* Less duct losses when Duct Heater is near outlet.