The aim of this project is to improve air quality in the Central Bohemian Region, namely to reduce emissions from heating in local furnaces, in particular by solid fuels, which by their emissions represent a decisive source of pollution load (suspended PM 10, PM 2,5 , benzo(a)pyrene). The target will be met by replacing at least 2,000 stationary solid fuel combustion sources in households in the Central Bohemian Region.