HomeExpertly
www.homeexpertly.comHVAC Size Calculator
Estimate the air conditioner and furnace size for a home — area, ceilings, climate, insulation, sun, windows and people — with a tonnage and BTU recommendation, U.S. cost estimate, and a downloadable PDF.
This is a quick rule-of-thumb estimate — a contractor's ACCA Manual J load calc is what sizes real equipment. Oversizing hurts comfort and humidity control. For planning purposes only.
Home & Climate
1
Conditioned Space
ft
×
ft
ft
ppl
sq ft
Length × width. Edit to enter total conditioned square footage.+1k ea
2
Climate & Envelope
5%
A small pad is fine; big oversizing short-cycles and leaves the air clammy
3
System & Cost
$
Rough installed price per cooling ton; varies a lot by region and equipment.
Size Estimate
Recommended AC Size
—
Enter your home to begin
Cooling Load
—
Recommended Unit
—
Heating Load
—
Cooling Load Estimate
Base load area x zone—
Ceiling adjustment—
Insulation factor—
Sun exposure—
Occupants over 2—
Windows + kitchen—
TOTAL COOLING—
Sq Ft / Ton
—
Furnace BTU
—
Est. System Cost
—
Size By Climate Zone
Cooling tons for your home, by climate zone
Climate Zone Comparison — Your Home
| Climate Zone | BTU / sq ft | Cooling BTU | Rec. Tons |
|---|
For your 1,500 sq ft home. Hotter zones and sunnier, leakier homes need more cooling.