CondensingResidentialHigh-Efficiency
Buderus GB142
Premium wall-hung condensing boiler with durable aluminium-silicon heat exchanger.
94–96% AFUE$3,800 – $7,000 installed2 models
GB142 models
CondensingENERGY STAR
GB142-30
AFUE
95%
Output
97k BTU
Turndown
4:1
Warranty
10 years
Installed from
$5,800
High-EfficiencyENERGY STAR
GB142-45
AFUE
95%
Output
145k BTU
Turndown
4:1
Warranty
10 years
Installed from
$6,400
Other Buderus series
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