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The secret to the MB5’s five star efficiency is its multi tube heat exchanger combined with a modulating gas valve which minimises gas usage, modulating combustion fan and modulating room air fan.

The advanced technology of gas valve modulation is able to match the load requirements of your home reducing its heating capacity as low as 10%*. This not only reduces gas consumption but also reduces electricity usage of the fan motor.

Bonaire MB5NC-21

Capacity 21kW  | Efficiency Rating 5.2 Stars
Duct Connection 300mm (12″)
Dimensions 845x350x618  |  Number of Outlets 7-11
Warranty 5-Year Warranty


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Product Brochure  |  Warranty |  Technical Specifications