What BTU rating should I choose for my air handler?

  • This depends on the coverage area/room size you are trying to heat/cool
  • An Air Handler's BTU is how powerful the fan is. A higher BTU rating will be able to heat/cool a larger area
Air Handler BTU Coverage Area/Room Size (Sq Ft.)*
9K BTU
Up to 375 Sq. ft
12K BTU Up to 500 Sq. ft
18K BTU Up to 750 Sq. ft
24k BTU Up to 1000 Sq. ft
36k BTU  Up to 1500 Sq. ft

*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.

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