Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

HVAC Load Calculator

Estimate the heating or cooling capacity (BTUs) your room needs based on size, ceiling height, insulation, and climate. Use this before sizing an air conditioner, heat pump, or furnace.

Room Area (sq ft)

Ceiling Height (ft)

Insulation Level

Climate Zone

Windows/Sun Exposure

Fill in the required fields to see your result.

Construction

Insulation Calculator

Estimates the cost of insulating walls, attics, or floors based on area, stud depth, insulation type, and price per square foot. Use it when planning a home energy upgrade or new construction build.

Area to Insulate (sq ft)

Stud Depth

Cost per Square Foot ($)

Fill in the required fields to see your result.

Key differences

	HVAC Load Calculator	Insulation Calculator
Category	Construction	Construction
Inputs required	5	3
Result	Required BTU/Hour (BTU/hr)	Insulation Cost ($)
What it does	Estimate the heating or cooling capacity (BTUs) your room needs based on size, ceiling height, insulation, and climate. Use this before sizing an air conditioner, heat pump, or furnace.	Estimates the cost of insulating walls, attics, or floors based on area, stud depth, insulation type, and price per square foot. Use it when planning a home energy upgrade or new construction build.