Project: “Lower emissions and improved air quality through the replacement of heating appliances in individual households in the City of Sulejówek” refers to the replacement of heating medium (boilers, stoves, heating appliances) in households with heat sources burning biomass, gasifying wood, using gaseous fuels or air heat pumps. In addition, the project also concerns investments in renewable energy sources (RES) from the scope of photovoltaic systems, solar collectors. For the purposes of the project, the target group of final recipients in the recruitment process was collected (in accordance with Annex 19a to the application for funding – “Rules governing the recruitment of final recipients”). Local visions on real estate (households) submitted for the project have been carried out, resulting in the obtained energy certificate (Annex 15 to the grant application). The planned investment includes the modernisation of 33 residential buildings in the field of replacement of heating equipment, and in 26 buildings there will also be RES infrastructure (a total of 28 installations), consisting of: • On-grid photovoltaic installations (25 systems in total) • Solar collector installations (1 systems in total) • Air heat pump installations (2 systems). The result of the project will be, inter alia, a reduction in CO2 emissions of 207.22 tonnes CO2/year, which is 69.72 % in relation to the current situation. PM10 emissions will be reduced by 178.24 kg/year, which is 94.38 % for the current state. The project is implemented in the City of Sulejówek, which has 19,311 inhabitants. The planned investment is not a revitalisation project. The project will be implemented in the ‘Design and Build’ mode.