BFC Cyclone

BFC Cyclone is a fully room-sealed condensing high-efficiency water heater (97% gross). Flexible flue options allow this water heater to be placed almost anywhere. This water heater is fitted with an automatic gas/air premix burning system including burner modulation. BFC Cyclone is standard delivered with low-maintenance powered anodes.


  • Whisper quiet operation (<45 dB(A) at 2m distance from duct)
  • Varying water temperature setting from 40°C to 80°C with use of week timer
  • Flexible flue options (maximum length 100m) allow installations to be placed almost anywhere
  • Easy fault diagnosis and computer controlled digital week timer
  • Programmable for legionella purge cycle
  • Voltage-free contact for general fault indication to BMS
  • Automatic gas/air coupled premix combustion system incl. burner modulation
  • Maximum working pressure up to 8 bar
  • Possibility of heating (central heating) with Theta Dual Service
  • Including Y-piece
  • Equipped with low-maintenance inert anodes as standard
  • KIWA tested: Ready for 20% mixing with hydrogen (H2)




  • High efficiency storage water heater
  • Very complete control with several options: week timer, legionella prevention program, easy fault diagnosis and computer controlled digital week timer
  • NOx emissions ≤ 30 ppm (dry-air-free) – NOx class 5

Where to buy



  • BMS interface for easy connection to a building management system, learn more…
  • The BFC cyclone is suitable for combining hot water and heating, learn more...

BFC Cyclone

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Below you will find a download to Autocad drawings per unit.

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Below you will find a download to the REVIT drawings (RFA) and the Open Source drawings (IFC) per unit.

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Below you can download our CE certificates or other certificates and/or declarations that may apply to the product.

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Below you can download the energy label of each water heater. This label shows the efficiency per device.

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Please find below flue parts information per unit. Each document contains all necessary information on configuration, parts and assembly.

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Below you will find Instruction Manuals with information about the installation, commissioning and maintenance of your installation.

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Here you can download the product cards per device.

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Below you can download our spec sheets. These sheets contain all possible information regarding technical specifications such as the load profile, input, draw-off capacity,  dimensions and installation options.

Ecodesign Specifications

BFC Capacity Profile Energy efficiency class Energy efficiency
28 XXL A 91%
30 XXL A 91%
50 XXL A 91%
60 XXL A 90%
80 3XL 93%
100 3XL 93%
120 3XL 92%


Anyone who makes vital high-end equipment and considers user comfort a top priority must be able to guarantee and support the flawless operation of its products. Customer satisfaction throughout the life of the product. AO Smith offers an adequate service package: sizing, commissioning, service and maintenance.


What is the delivery time for this product?

For the delivery time of this product, it is best to contact our distributor, they can help you with this

How do I know which product is most suitable for my project?

You can always contact our Sales Engineers, they are happy to help you with this.

Where can I find information about products that are no longer in production?

In the Discontinued products you will find the information that is available about products that are no longer in production

Incentives for sustainability

The UK government provides different kinds of incentives for sustainability. Those rewards are given to both home owners and businesses.

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ROI for HE water heater?

Recover your investment quickly with a high-efficiency water heater. Know how here

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