CondensingResidentialHigh-Efficiency
Triangle Tube Challenger
Value-oriented condensing boiler delivering solid efficiency for budget-conscious projects.
93–95% AFUE$3,200 – $5,400 installed2 models
Challenger models
Combi
Challenger 85 Combi
AFUE
93%
Output
79k BTU
Turndown
5:1
Warranty
10 years
Installed from
$5,000
CombiENERGY STAR
Challenger 125 Combi
AFUE
95%
Output
118k BTU
Turndown
5:1
Warranty
10 years
Installed from
$5,400
Other Triangle Tube series
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