Condensing Boilers


Condensing boilers are up to 98% efficient. If you are replacing an aging boiler or building a new facility, installing a condensing boiler will improve your energy efficiencies and reduce your operating costs.


Customer Incentives for Commercial/Industrial new construction buildings

  • $600 per unit
    ≤ 299 MBtu/hr

Customer Incentives for Commercial/Industrial existing buildings

  • $1,000 per unit
    ≤ 299 MBtu/hr
  • $2,000 per unit
    ≥ 300 to ≤ 999 MBtu/hr

  • $6,000 per unit
    ≥ 1,000 MBtu/hr

Service Provider Incentive

  • $100 per unit

Distributor Incentive

  • $50 per unit

Equipment Eligibility

  • Used for space heating, water heating or both
  • Thermal efficiency: Retrofit ≥ 90%, New Construction > 90% for permits issued in after January 1, 2017
  • Certified to CSA 4.9/ANSI Z21.13
  • Residential installations, including in-suite, are not eligible
  • Purchased and rented units are eligible
Man with a clipboard

Work With a Trusted Service Provider

Locate qualified professionals who are experienced with our programs. These trusted providers are ready to help you assess the best energy-efficient equipment solutions for your business.

Find a Professional

Apply for Equipment Incentives

The process is easy. Simply complete the online application. After you submit it, an energy conservation advisor will contact you within 5 business days to review your application and discuss next steps.

More Information About Condensing Boilers

A common system that provides either space or water heating that utilizes condensing technology for higher efficiency.


How Condensing Boilers Work

Condensing boilers use a fuel source, such as natural gas, to heat water for space or water heating. During this process, heat is extracted from exhausted flue gases. This lowers the temperature of the flue gases below 60°C. As a result, the gases condense to liquid form, which releases latent heat that can be captured and used to reheat the return water.

It's the re-use of latent heat, which otherwise would be exhausted with a conventional boiler, that saves energy and improves efficiency.


  • Achieve up to 98% thermal efficiency compared to 70%-85% thermal efficiency for new conventional boilers
  • Lower operating costs and fewer emissions
  • Reduces chimney repairs and maintenance costs
  • Contemporary designs come in compact sizes for space efficiency


To make sure a condensing boiler will be the right fit for your building, consult an HVAC or engineering consultant who can evaluate suitability, savings, and how to improve your heating system for ideal condensing conditions.

To ensure your condensing boiler is operating at optimal efficiency, ask your installer to determine maintenance guidelines for your building requirements. It is important to make sure your facility’s personnel are properly trained for routine maintenance, as well as scheduling a tune-up every two years from your service provider.

Building Applications

A condensing boiler is typically an ideal heating solution for any commercial or industrial building. Be sure to check with an HVAC or engineering consultant to ensure that your current heating system is able to return low temperature water (less than 60°C) and that proper ventilation and drainage are possible.

Looking for a Trusted Service Provider?

These qualified professionals are experienced with our programs. They are ready to help you assess the best energy-efficient equipment solutions for your business.

Find a Professional

Have Questions About Our Incentive Programs?

Locate an energy conservation advisor in your area or email us your questions and we'll respond within 5 business days.

Contact Us