Estimate the towel radiator output needed for a comfortable room.
| Room Size | Typical Output | Use Case |
|---|---|---|
| Small cloakroom | 500–900 W | Supplementary warmth |
| En-suite | 700–1,200 W | Main or additional heat |
| Bathroom | 1,000–1,800 W | Main heat source |
| Large bathroom | 1,800 W+ | Main heat source |
BTU/h expresses heat output. The calculator converts the required watts into BTU/h and adjusts hydronic radiator catalogue output for the selected operating temperature.
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