Domestic Heating Compliance Guide

Domestic Heating Compliance Guide provides guidance on the means of complying with the requirements of Part L for conventional space heating systems and hot water systems in dwellings.


It includes four self-contained fuel-based sections, each of which addresses all the requirements applicable to primary and secondary space heating and hot water technologies (gas-fired, oil-fired, electric and solid-fuel systems), and five specialist technology-specific sections which provide further guidance on the minimum provisions for specialised space heating and hot water technologies (community heating; under-floor heating; heat pumps; solar water heating; and micro-CHP units).


This new edition includes the changes from the Corrigenda issued in December 2007 which affected several issues, including water hardness tables, replacement of hot water cylinders in existing gravity systems, minimum efficiencies of boilers, insulation of underfloor heating systems, and solid fuel appliance categories.