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Radiator Sizing Explained
£1.99
Choose radiators that can meet each room’s heat loss without unnecessary oversizing, with clear guidance for both boiler and lower-temperature heat pump systems.
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Radiator sizing explained clearly for self-builders matching heat emitters to individual room heat losses. The guide covers output requirements, flow temperatures and why a radiator selected for a heat pump may need to differ from one used with a conventional boiler.
Correct sizing should be coordinated with the chosen heat source, so this guide works particularly well alongside Air Source Heat Pumps Explained. Current energy-performance requirements for new and existing dwellings are set out in Approved Document L.
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