Construction & Materials
HVAC Cooling Load Calculator
Estimate the sensible cooling load and required tonnage for a room based on floor area.
Your inputs
Change any value to update the result instantly.
Total cooling load
39,900 BTU/hr
Required tonnage
3.33 tons
Base load
37,500 BTU/hr
Occupant load
2,400 BTU/hr
Formula and working
load (BTU/hr) = area × factor; tons = load ÷ 12000
- 1
Collect the inputs
Conditioned floor area = 1,500 ft²; Load factor = 25 BTU/hr/ft²; Number of occupants = 4
- 2
Apply the formula
load (BTU/hr) = area × factor; tons = load ÷ 12000
- 3
Result
Total cooling load = 39,900 BTU/hr
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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