Chimney collector, from the company Kratki, is designed to be placed at the chimney outlet from the fireplace and is intended to recover part of the thermal energy from the flue gases exiting the combustion chamber of the insert fireplace.

The heat is further transferred to the hot water or, through a central heating system, to radiators in residential areas. It is a very economical source of heat, as it does not require the use of additional fuel, it only uses the excess heat in the flue gases flowing towards the chimney.

The hot flue gases flow through the heat exchanger, heating the water in the exchanger's jacket. The hot water is then discharged through a pipe located at the top of the exchanger.

It is adapted to work with radiator installations and underfloor heating systems provided with solid fuel central heating stoves, natural gas, oil, electric energy, heat pumps, and solar batteries.

It is made of steel intended to operate at high temperatures. This material is adapted for operation in central heating systems, ensuring high reliability of the device, thermal resistance, and long-term operation.

The central part of the device is the internal chamber in which there is a system of pipes that increase the contact surface of the water with the heating medium, i.e., the flue gases. Additionally, it is equipped with a coil, which is a copper tube that serves as a thermal protection device.