What is a plenum heater?
A plenum heater is an electric resistance heating device that’s installed in the open air space where ductwork and a furnace join. Air is heated as it flows across electric elements and then is distributed through the existing ductwork.
Where is the plenum on a gas furnace?
Plenum boxes are usually situated on either side of the fan or heat exchanger and have the important function of bringing in, distributing, and removing air. They are the air’s first stop after being heated or cooled and its last stop before going back into your AC, heat pump, or furnace.
How much does a plenum heater cost?
Cost of Supply Air Plenums
| Supply Air Plenums Costs | Zip Code | |
|---|---|---|
| Basic | Best | |
| Supply Air Plenums – Installation Cost | $100.25 – $100.35 | $150.00 – $200.00 |
| Supply Air Plenums – Total | $150.25 – $160.35 | $245.00 – $305.00 |
| Supply Air Plenums – Total Average Cost per Unit | $155.30 | $275.00 |
What is a plenum for an oil furnace?
A supply plenum is an enclosed compartment that’s located just after your heat exchanger if you follow the flow of air through your furnace (see below). When your air handler blows air over your system’s heat exchanger, that warm air is directed into the supply plenum.
Is a drop ceiling a plenum?
Space between the structural ceiling and the dropped ceiling or under a raised floor is typically considered plenum; however, some drop-ceiling designs create a tight seal that does not allow for airflow and therefore may not be considered a plenum air-handling space.
In which type of furnace is the plenum located on top?
This is the piece of your air conditioning system that most people never see. It’s contained in a metal box called a plenum, and sits on top of your furnace. If you have a horizontal furnace in an attic, the evaporator coil will sit on one end of the furnace instead of on top.