Natural Gas Tankless Water Heaters

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EnergyStar Condensing Water Heater. Ultra-Low NOx. Ratings: 6.7 GPM at 40° F Rise, 6.1 GPM at 50° F Rise, 5.1 GPM at 60° F Rise, 4.3 GPM at 70° F Rise. 160k Max BTU/h.
$1,044.00
Was $1,453.00
SAVE $409.00
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EnergyStar Non-Condensing Water Heater. Ultra Low Nox Emissions. Ratings: 8.4 GPM at 40° F Rise, 6.7 GPM at 50° F Rise, 5.6 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 199k Effective BTU/h.
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$1,372.71
Was $1,444.96
SAVE $72.25
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EnergyStar Non-Condensing Water Heater. Ultra Low Nox Emissions. Ratings: 8.4 GPM at 40° F Rise, 6.7 GPM at 50° F Rise, 5.6 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 199k Effective BTU/h.
8% Buy This
$1,372.71
Was $1,444.96
SAVE $72.25
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EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions. Ratings: 5.8 GPM at 40° F Rise, 3.9 GPM at 50° F Rise, 3.9 GPM at 60° F Rise, 3.3 GPM at 70° F Rise. 140k Effective BTU/h.
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$757.95
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EnergyStar Condensing Water Heater. Ultra-Low NOx. Ratings: 8.3 GPM at 40° F Rise, 6.9 GPM at 50° F Rise, 5.5 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 199k Max BTU/h.
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$1,153.95
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EnergyStar Condensing Water Heater. Ultra-Low NOx. Ratings: 7.9 GPM at 40° F Rise, 6.2 GPM at 50° F Rise, 5.3 GPM at 60° F Rise, 4.5 GPM at 70° F Rise. 190k Max BTU/h.
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$965.95
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. Ratings: 8.4 GPM at 40° F Rise, 6.7 GPM at 50° F Rise, 5.6 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 180k Effective BTU/h.
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$1,394.89
Was $1,549.88
SAVE $154.99
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EnergyStar Non-Condensing Water Heater. Ultra Low Nox Emissions. Ratings: 8.4 GPM at 40° F Rise, 6.7 GPM at 50° F Rise, 5.6 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 199k Effective BTU/h.
4% Buy This
$1,372.71
Was $1,444.96
SAVE $72.25
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. Ratings: 9.3 GPM at 40° F Rise, 7.4 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.3 GPM at 70° F Rise. 184k Effective BTU/h.
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$1,601.86
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$2,205.00
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Commercial Water Heater. Low NOx Emissions. Ratings: GPM at 40° F Rise, GPM at 50° F Rise, GPM at 60° F Rise, 8.9 GPM at 70° F Rise. 304k Effective BTU/h.
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$4,887.00
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EnergyStar Water Heater. Ultra Low NOx Emissions. Ratings: 5.8 GPM at 40° F Rise, 4.6 GPM at 50° F Rise, 3.8 GPM at 60° F Rise, 3.3 GPM at 70° F Rise. 122k Effective BTU/h.
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$854.58
Was $899.56
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Rinnai Luxury Series RUCS65IN - Residential 130,000 BTU - Natural Gas Tankless Water Heater - Indoor
Wall Mounted, Condensing Water Heater Ultra Low NOx Emissions Concentric Vent. Ratings: 6.0 GPM at 40° F Rise, 4.8 GPM at 50° F Rise, 4.0 GPM at 60° F Rise, 3.5 GPM at 70° F Rise. 130k Effective BTU/h.
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$649.00
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EnergyStar Commercial Condensing Water Heater. Ultra Low NOx Emissions. Ratings: 9.3 GPM at 40& deg; F Rise, 7.4 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.3 GPM at 70° F Rise. 199k Effective BTU/h.
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$2,421.60
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EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions. Ratings: 9.6 GPM at 40° F Rise, 7.6 GPM at 50° F Rise, 6.3 GPM at 60° F Rise, 5.3 GPM at 70° F Rise. 199k BTU/h.
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$1,878.40
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EnergyStar Condensing Water Heater. Ultra-Low NOx. Ratings: 7.9 GPM at 40° F Rise, 6.2 GPM at 50° F Rise, 5.3 GPM at 60° F Rise, 4.5 GPM at 70° F Rise. 190k Max BTU/h.
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$990.95
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EnergyStar Condensing Water Heater. Ultra-Low NOx. Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.3 GPM at 60° F Rise, 5.4 GPM at 70° F Rise. 199k Max BTU/h.
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$1,377.00
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EnergyStar Water Heater. Ultra Low NOx Emissions. Ratings: 5.0 GPM at 40° F Rise, 3.9 GPM at 50° F Rise, 3.3 GPM at 60° F Rise, 2.8 GPM at 70° F Rise. 120k Effective BTU/h.
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$612.25
Was $644.47
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. Ratings: 5.8 GPM at 40° F Rise, 4.6 GPM at 50° F Rise, 3.8 GPM at 60° F Rise, 3.3 GPM at 70° F Rise. 109k Effective BTU/h.
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$999.05
Was $1,051.68
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EnergyStar Condensing Water Heater. Ultra-Low NOx. Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.2 GPM at 70° F Rise. 199k Max BTU/h.
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$1,668.00
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Rinnai Luxury Series RUCS75IN - Residential 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
Wall Mounted, Condensing Water Heater Ultra Low NOx Emissions Concentric Vent. Ratings: 7.5 GPM at 40° F Rise, 5.9 GPM at 50° F Rise, 4.8 GPM at 60° F Rise, 4.2 GPM at 70° F Rise. 160k Effective BTU/h.
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$849.00
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. Ratings: 7.1 GPM at 40° F Rise, 5.8 GPM at 50° F Rise, 4.9 GPM at 60° F Rise, 4.2 GPM at 70° F Rise. 157k Effective BTU/h.
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$1,230.83
Was $1,295.61
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EnergyStar Water Heater. Ultra Low NOx Emissions. Concentric Vent. Ratings: 7.6 GPM at 40° F Rise, 6.1 GPM at 50° F Rise, 5.0 GPM at 60° F Rise, 4.3 GPM at 70° F Rise. 180k Effective BTU/h.
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$1,190.56
Was $1,253.22
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EnergyStar Water Heater. Ultra Low NOx Emissions. Ratings: 5.5 GPM at 40° F Rise, 4.4 GPM at 50° F Rise, 3.7 GPM at 60° F Rise, 3.2 GPM at 70° F Rise. 120k Effective BTU/h.
2% Buy This
$1,388.16
Was $1,542.40
SAVE $154.24
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Displaying Products 1 - 24 (of 155)
Tools & Articles
Natural gas tankless water heaters are compact, can supply hot water as long as needed, and require less energy to run than other systems. Depending on the model, natural gas tankless water heaters are also available as indoor or outdoor units, offering the homeowner more flexibility.