Cooling Load Manual J
Very rough cooling load estimate for a home.
Work It Out And Get Clear Answers
Very rough cooling load estimate for a home.
Cooling Load Manual J Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Press Calculate to see the result.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Cooling Load Manual J Quick Guide
Typical values for reference.
| Floor area (m²) | Climate factor (W/m²) | Occupants | Cooling load |
|---|---|---|---|
| 100 | 80 | 4 | 10,200 W |
| 50 | 80 | 4 | 6,200 W |
| 200 | 80 | 4 | 18,200 W |
| 100 | 40 | 4 | 6,200 W |
| 100 | 160 | 4 | 18,200 W |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | |||
Cooling Load Manual J FAQ
Answers to common questions about this calculator.
Load = area factor + 100 W per person + 150 W per m² of glass. Not a full Manual J calculation.
It uses the default inputs shown and the formula described above. Change any value and press Calculate to see how the result moves.
It is an estimate based on the inputs you enter. Check real quotes, labels, product data or official guidance for important decisions.
Yes. Replace each input with your own figures and press Calculate to update the result.