High-Efficiency Boilers
95%+ AFUE for the lowest running costs
High-efficiency boilers represent the top tier of the market — 95%+ AFUE condensing units with modulating burners that precisely match output to demand. They deliver the lowest fuel bills, the smallest carbon footprint, and qualify for the most generous federal and provincial rebates. If you are replacing an old boiler and plan to stay in your home, a high-efficiency model typically pays for itself through savings and incentives.
Pros & considerations
Pros
- 95%+ AFUE
- Maximum rebate eligibility
- Lowest fuel bills
- Precise modulation & comfort
- Smallest carbon footprint
Considerations
- Premium upfront cost
- Requires condensate management
- Professional setup for best results
Is a high-efficiency boiler right for you?
Homeowners planning to stay 7+ years who want the lowest operating cost and best rebates.
Best for
Get High-Efficiency Boilers Quotes
Match with installers for this boiler type.
Top high-efficiency boilers
Highest-rated high-efficiency boiler models across all brands.
Vitodens 200-W B2HA 35
AFUE
95%
Output
118k BTU
Turndown
10:1
Warranty
10 years
Installed from
$7,600
SL 14-115 G3
AFUE
95%
Output
109k BTU
Turndown
10:1
Warranty
12 years
Installed from
$5,200
KNIGHT WHN155
AFUE
95%
Output
147k BTU
Turndown
5:1
Warranty
12 years
Installed from
$6,200
GB142-45
AFUE
95%
Output
145k BTU
Turndown
4:1
Warranty
10 years
Installed from
$6,400
Prestige Solo 175
AFUE
95%
Output
166k BTU
Turndown
5:1
Warranty
10 years
Installed from
$6,200