Water heating
Combi & heat-only boilers
- In stock
- 34 of 34 SKUs
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- $1,249.52
Wall-hung condensing boilers from Rinnai and Navien, for heating alone or heating plus domestic hot water.
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34 products
Rinnai
Rinnai I060SN 60,000 BTU Condensing Wall Mounted Heat Only Boiler NG
Regular price $1,499.05
In stock
Rinnai
Rinnai M090SN Solo 90,000 BTU Condensing Wall Mounted Heat Only Boiler (Natural Gas)
Regular price $1,483.85
In stock
Rinnai
Rinnai I090SN i090SN 90,000 BTU Condensing Wall Mounted Heat Only Boiler (NG)
Regular price $1,412.86
In stock
Rinnai
Rinnai I120SN 120,000 BTU Condensing Wall Mounted Heat Only Boiler (NG)
Regular price $1,728.40
In stock
Rinnai
Rinnai M060SN Solo 60,000 BTU Condensing Wall Mounted Heat Only Boiler (Natural Gas)
Regular price $1,544.39
In stock
Rinnai
Rinnai M060CN M-Series 60,000 BTU Condensing Wall Mounted Combi Boiler (Natural Gas)
Regular price $3,264.32
In stock
Rinnai
Rinnai I090CN i090CN 90,000 BTU Condensing Wall Mounted Combi Boiler (NG)
Regular price $1,832.57
In stock
Rinnai
Rinnai M160SN M-Series Condensing 95.0% Natural Gas Boiler with 160,000 BTU Input
Regular price $1,932.16
In stock
Rinnai
Rinnai I150SN 150,000 BTU Condensing Wall Mounted Heat Only Boiler (NG)
Regular price $1,265.78
In stock
Rinnai
Rinnai E85SRP Condensing Propane Gas Boiler with 85,000 BTU Input
Regular price $1,249.52
In stock
Rinnai
Rinnai I120CN i120CN 120,000 BTU Condensing Wall Mounted Combi Boiler NG
Regular price $1,837.26
In stock
Rinnai
Rinnai I060CN i060CN 60,000 BTU Condensing Wall Mounted Combi Boiler NG
Regular price $1,266.35
In stock
Rinnai
Rinnai IP090160C 90,000 BTU Condensing Wall Mounted Combi Boiler (NG/LP)
Regular price $1,926.46
In stock
Rinnai
Rinnai IP199199C 199,000 BTU Condensing Wall Mounted Boiler (NG/LP)
Regular price $2,077.22
In stock
Navien
Navien NFB-175H High Efficiency Condensing Heating Boiler Max Htg Input: 175,000 BTU/h Indoor Wall-Hung Residential/Commercial
Regular price $1,875.69
In stock
Navien
Navien NFB-399C High Efficiency Condensing Heating Boiler Max Htg Input: 399,000 BTU/h
Regular price $6,206.63
In stock
Navien
Navien NCB-240/110H Condensing Combi-Boiler Max Htg Input: 110,000 BTU/h, Max DHW Input: 199,900 BTU/h
Regular price $1,980.48
In stock
Navien
Navien NFB-200H High Efficiency Condensing Heating Boiler Max Htg Input: 200,000 BTU/h
Regular price $2,063.50
In stock
Navien
Navien NFC-250/200H High Efficiency Condensing Combi-Boiler Max Htg Input: 199,900 BTU/h Max DHW Input: 210,000 BTU/h Indoor Wall-Hung
Regular price $2,504.15
In stock
Navien
Navien NFB-301C High Efficiency Condensing Heating Boiler 301,000 BTU/h Indoor Wall-Hung
Regular price $5,126.52
In stock
Navien
Navien NCB-190/080H High Efficiency Condensing Combi-Boiler Max Htg Input: 80,000 BTU/h, Max DHW Input: 160,000 BTU/h
Regular price $1,913.04
In stock
Navien
Navien NCB-250/150H High Efficiency Condensing Combi-Boiler Max Htg Input: 150,000 BTU/h, Max DHW Input: 199,900 BTU/h
Regular price $2,211.01
In stock
About Combi & heat-only boilers
A heat-only boiler feeds radiators, baseboard or radiant floors. A combi does that and also makes hot water for the taps on demand, so there is no separate water heater to buy or find room for. Most models here modulate — they turn the burner down to match the load rather than cycling on and off — and several include an outdoor reset sensor that adjusts water temperature to the weather. Sizing is a heat-loss calculation, not a guess from floor area.
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