The MB4 achieves its four star efficiency with its multi tube heat exchanger combined with a modulating gas valve which minimises gas usage.

Benefits of Bonaire MB4 Units

• 4 star energy efficiency rating
• Modulating gas valve automatically adjusts gas rate as the home approaches set temperature
• Auto adjusting variable speed room air fan further enhancing the benefit of modulation and energy savings
• Integrated four zone control standard, heat only the rooms you need when you need them**
• Induced draft combustion for improved energy efficiency
• Compatible with Bonaire Dual Cycle refrigerated airconditioning
• 5 year parts and labour warranty with 10 year parts warranty on the burner
• 7 year warranty option
• Universal internal/external unit

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**4 Zones standard with an option for 8. Zone motors supplied and installed by air conditioning retailer at additional cost. Zone dampers and motors supplied by installer at additional costs