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Heat Loss Through Walls Calculator
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Heat Loss Through Walls Estimator
Enter your numbers below for an instant estimate.
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How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Press Calculate to see the result.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Heat Loss Through Walls Quick Guide
Typical values for reference.
| Area (mยฒ) | U-value | Temp difference (K) | Loss |
|---|---|---|---|
| 40 | 0.3 | 20 | 240 W |
| 20 | 0.3 | 20 | 120 W |
| 80 | 0.3 | 20 | 480 W |
| 40 | 0.15 | 20 | 120 W |
| 40 | 0.6 | 20 | 480 W |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | |||
Common Questions
Heat Loss Through Walls FAQ
Answers to common questions about this calculator.
Loss.
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.