The article describes an integrated approach to the replacement of heating appliances in residential buildings in the event of major repairs or mechanical wear of these devices. The conditions of use of different types of modern heating appliances in existing heating systems have been analyzed. Based on experimental data, an analysis has been conducted for the operation of an aluminium radiator in a single-pipe up-feed heating system with respect to various radiator connection options to the riser. Recommendations have been provided on usage of modern types of heating appliances in residential buildings.

Keywords: the heater, thermal comfort, the response time, a single-pipe heating system, the connection diagram of the heater to the riser.