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Bonaire MB4 - Premium 4-Star Ducted Gas Central Heating

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  • Same day shipping for stocked items
  • Money back guarantee
  • Outstanding service & expert technical advice
  • AU owned & operated for 50 years

Quick Overview

The MB4 is a first class unit with features to rival 5 star units. The secret is the MB4's outstanding energy efficiency from its unique multi-tube heat exchanger with its modulating gas valve and modulating room air fan. Minimal gas usage and maximum the heat transfer to your home for comfort with reduced energy bills.

The MB4 Series is available in Natural Gas only, in:

  • 14, 20, 25 and 30 kw Units
  • Models for Internal or External Installation
  • Extra Air Models suitable for add-on cooling with Bonaire Dual Climate Control
  • See table below for model comparisons and use the menus to see pricing on the model right for you.

Features and Benefits

  • 4 integrated zones for total heat control*
  • Option to upgrade to an 8 zone system.
  • Choice of the Navigator Remote Controller or the Navigator Wall Mounted Controller, which are both fully programmable
  • 5 year domestic parts and labour warranty
  • 10 year parts only warranty on the heat exchanger and burner

Star Rating
Bonaire MB4 External NG

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  • Advanced unique modulation technology is able to match the load requirements of your home by reducing its heating capacity to 10%. Saving more on gas.
  • Unique multi-tube heat exchanger delivering maximum energy efficiency up to 84%
  • Induced draft combustion for improved energy efficiency
  • Electronic ignition eliminates the need for a pilot light
  • Backed by Bonaire’s own National Service Division
  • External model in Colourbond® cabinet
  • Engineered for Australian conditions

* Zoning

4 zone standard and the 8 zone option require individual zone motors and installation. Ask us for a quote on your requirements.

Which Bonaire MB4 Unit is Right for You?

(Select menu options above for current pricing)

Model Star
1- Heating Capacity

3 - Airflow

Duct Size (mm)

Supply & Return

Length Width Height Weight
    Heat Output

Typical number

of 150mm ducts


Extra Air

MB4 -14 Internal or External 4.0 14 5-9 480 300 845 350 620 47
MB4-20 Internal or External 4.4 20 7-11 540 300 845 385 620 50
MB4-20 XA Internal only
4.4 20 7-14 830 350 895 475 670 60
MB4-25 Internal or External
4.0 25 8-14 830 350 895 475 670 65
MB4-30 Internal or External
4.4 30 10-15 830 350 895 475 670 70
MB4-30 XA Internal or External
4.4 30 10-20 1050 350 895 475 670 73

Additional Information

Recommended Accessories

Additional Information

SKU 54300-MB4
Energy Star Rating 4.0

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Bonaire MB4 - Premium 4-Star Ducted Gas Central Heating 0 out of 1 5 based on ratings. user reviews.