Bosch Greenstar Boiler | Wall Mounted Boiler

From $4,998.75
By Bosch

Product Sizing
  • 79,000 BTU/hr (ZBR21)
  • 100,000 BTU/hr (ZBR28)
  • 131,000 BTU/hr (ZBR35)
  • 151,000 BTU/hr (ZBR42)
Shipping Information
  • This item quallifies for $95 terminal shipping across Canada!
  • This item can be shipped directly to your address for an extra cost; contact our team for a personalized shipping quote.

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No, this product does not have an Energy Star certification.

Click here to learn more about ENERGY STAR in Canada.

Greener Homes Grant Eligibility

No, this product is not eligible for the Canada Greener Homes Grant, except possibly for Northern or off-grid communities.

Click to learn more about the Canadian Greener Homes Initiative and product eligibility here.

  • 10 Year Full Warranty
  • Limited Lifetime Heat Exchanger

Click here to learn more how warranty works.


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World-wide Best-Selling Boiler Lineup - German-designed Boilers Your Home

Bosch Greenstar Wall Mounted Boilers are built using precision German engineering, with Bosch designing and manufacturing all of the key boiler system components. The ultra-quiet Greenstar Boiler is ideal for radiant heating in your home, including in-floor radiant heating or panel/baseboard radiators.

The Bosch Greenstar gas boilers are condensing gas boilers and achieve high efficiency ratings up to 95% AFUE. Bosch has long been known as a quality supplier of everything home appliance, and the Greenstar Boilers are no exception - contact us today or order now to start benefiting from a Bosch boiler.

Key features of Bosch Greenstar Wall-mounted Boilers include:

  • Guaranteed quality with German engineered and built components
  • Live fire tested and tuned prior to shipment from the factory
  • The perfect residential boiler for:
    • in-floor radiant heating
    • radiant panel heating
    • baseboard heaters
    • hydronic/water furnace home heating
  • A heating boiler to fit any sized home or application:
    • 79,000 BTU/hr
    • 100,000 BTU/hr
    • 131,000 BTU/hr
    • 151,000 BTU/hr
  • Ease of installation, can operate with or without an indirect storage tank
  • Use in parallel to your solar thermal hot water system to save money and reduce your energy consumption
  • Low-maintenance, high efficiency Aluminum-Magnesium-Silicon (Al-Mg-Si) Heat Exchanger requires cleaning only once every 5 years
  • Compact wall-mounted design saves precious floor space in your home
  • Built-in circulating pump
  • No de-rating for altitudes up to 6,000 ft (excl. ZBR42 model)
  • Natural Gas & LP (propane) compatible

Safety warning: this is a gas appliance, and as such, requires certified, professional installation. Failure to properly install & commission a gas appliance can lead to serious damage, injury, or death.

More information about Bosch Greenstar wall-mounted boilers can be found below:

Bosch Greenstar Boilers - wall mounted

Greenstar Wall Mounted Boiler Dimensions & Sizing:

Model Numbers
Input Heating Capacity (BTU/hr)
Dimensions (H x W x D)


79,200 BTU/hr

33.5" x 17.4" x 13.9"


100,000 BTU/hr 33.5" x 17.4" x 13.9"


131,900 BTU/hr 33.5" x 17.4" x 13.9"
ZBR42 151,600 BTU/hr 33.5" x 17.4" x 13.9"