Bosch Greenstar Boiler | Floor Standing Boiler

From $5,198.75
By Bosch

Product Sizing
  • 79,000 BTU/hr (KBR21)
  • 100,000 BTU/hr (KBR28)
  • 131,000 BTU/hr (KBR35)
  • 151,000 BTU/hr (KBR42)
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

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World-wide Best-Selling Boiler Lineup - Floor Standing Boilers Your Home

Bosch Greenstar Floor Standing 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 Floor Standing Boilers include:

  • Guaranteed quality with German engineered and built components
  • Live fire tested and tuned prior to shipment from the factory
  • The perfect standing 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
  • Integrated low-loss header with a pre-installed supply sensor
  • Low-maintenance, high efficiency Aluminum-Magnesium-Silicon (Al-Mg-Si) Heat Exchanger requires cleaning only once every 5 years
  • Compact floor standing design
  • Built-in circulating pump
  • No de-rating for altitudes up to 6,000 ft (excl. KBR42 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 standing boilers can be found below:

Bosch Greenstar Boilers - floor standing

Greenstar Standing Boiler Dimensions & Sizing:

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


79,200 BTU/hr

41" x 19.5" x 21.88"


100,000 BTU/hr 41" x 19.5" x 21.88"


131,900 BTU/hr 41" x 19.5" x 21.88"
KBR42 151,600 BTU/hr 41" x 19.5" x 21.88"