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TOMKAT RADIATOR SIZING ASSISTANT
Quick screening tool for comparing estimated room heat requirement against manufacturer radiator output data..
Important: This is a screening tool only. It does not replace a full room-by-room heat loss calculation, heat pump design assessment, manufacturer design data, or professional survey.

1. Room Estimate

Enter the room details to estimate the output required. This is a rule-of-thumb estimate, not a formal heat loss calculation.

2. Heating System Assumption

Use this to show trainees how lower-temperature systems reduce radiator output. These are simplified training comparisons, not heat pump design calculations.

Standard boiler / manufacturer rating
Uses the published radiator output at ΔT50. This is the normal comparison point for radiator output tables.

3. Existing Radiator Checker

Select the radiator type and size. Radiator outputs are based on published manufacturer performance data at ΔT50. Always confirm suitability using current manufacturer information and a full heat loss assessment where required.

4. Radiator Finder

After calculating the room estimate, use this to find radiator sizes that meet or closely match the estimated requirement. This helps trainees see how radiator type, height and width affect output.

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