Condensing water heaters


By using the heat which is released in the process of burning gas for heating the water supply, almost all of the consumed energy can be applied in this process. This heat is transferred to the water via the heat exchanger. This is the basic principle of condensing techniques. Products based on this principle are very efficient.

For the official Kiwa Gastec declarations, please refer to Support & Downloads of the BFC.

Efficiency A.O. Smith gas-fired condensing water heaters

                             Appliance EPC number    Efficiency (gross)
  TWI 35 - 130       0,907 95%
  TWI 45 - 190 0,907 95%
  BFC 28 0,965 96%
  BFC 30 0,966 98%
  BFC 50 0,966 96%
  BFC 60 0,966 95%
  BFC 80 0,961 97%
  BFC 100 0,961 95%
  BFC 120 0,961 95%

A.O. Smith product range of gas-fired condensing water heaters

BFC Cyclone

The BFC is fully room-sealed condensing high efficiency water heater (97% gross). Flexible flue options allow this water heater to be placed almost anywhere.


Fully room-sealed condensing high-efficiency water heater (95% gross).