This document is applicable to roomheaters for solid fuel (freestanding or inset solid fuel burning local space heating products that operate with fire doors either as closed only or as closed or open; insets without functional modification).The intended use of the appliances is space heating in residential buildings. They can be fitted with a boiler (integral part of the appliance containing water to be heated up) for the supply of hot water for central heating systems.These appliances can burn one or more types of the following solid fuels as specified: - wood logs;- compressed untreated wood;- wood pellets;- lignite briquettes;- solid mineral fuels;- peat briquettes.This document is not applicable to appliances with fan assisted combustion air or appliances that are mechanically fed.This document specifies procedures for assessment and verification of constancy of performance (AVCP) of characteristics of solid fuel burning roomheaters.