Ultra gas boiler
- Rating: 93% AFUE
- Materials: Aluminum heat exchanger
- Type: Gas
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GV gas boiler
- Rating: 87% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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CGs gas boiler
- Rating: 85% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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CGi gas boiler
- Rating: 84% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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CGt gas boiler
- Rating: 81% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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CGa gas boiler
- Rating: 83% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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EG gas boiler
- Rating: 82% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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PFG gas boiler
- Rating: 81% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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LGB gas boiler
- Rating: 80% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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EGH gas boiler
- Rating: 80% AFUE
- Materials: Cast iron heat exchanger
- Type: Gas
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