Natural Gas Tankless Water Heaters

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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.
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Model Number T-H3-DV-N is the Number 1 Seller
Learn More About Takagi T-H3-DV-N
$1,049.00
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Model Number TK-110U-I-N is the Number 2 Seller
Learn More About Takagi TK-110U-I-N
Takagi
Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 5.8 GPM at 40° F Rise, 4.5 GPM at 50° F Rise, 3.9 GPM at 60° F Rise, 3.3 GPM at 70° F Rise. 115k Effective BTU/h.
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$599.00
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Model Number T-H3M-DV-N is the Number 3 Seller
Learn More About Takagi T-H3M-DV-N
$720.00
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Model Number NR98-SV-NG is the Number 4 Seller
Learn More About Noritz NR98-SV-NG
EnergyStar Non-Condensing Water Heater. Ultra Low Nox Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.4 GPM at 40
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$1,417.00
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Model Number TK-310U-E-N is the Number 5 Seller
Learn More About Takagi TK-310U-E-N
$740.00
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Learn More About Takagi TK-310U-I-N
Takagi
Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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. 156k Effective BTU/h.
4% Buy This
$740.00
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Learn More About Noritz NR98-OD-NG
$1,417.00
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Learn More About Rheem Tankless RTGH-84DVLN
$929.00
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Learn More About Takagi TK-510U-E-N
Takagi
Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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. 163k Effective BTU/h.
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$940.00
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Learn More About Noritz NR98-DVC-NG
EnergyStar Non-Condensing Water Heater. Ultra Low Nox Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.4 GPM at 40
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$1,417.00
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Learn More About Noritz NR83DVC-NG
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Concentric Vent. Ratings: 7.6 GPM at 40
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$1,229.00
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Learn More About Takagi TK-540P-NEH
Takagi
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). 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 Effective BTU/h.
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$1,299.00
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Learn More About Rinnai V75IN
Rinnai
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.5 GPM at 40
2% Buy This
$872.40
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Learn More About A.O. Smith ATI-540H-N
$1,170.00
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Learn More About Rinnai V94EN
Rinnai
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.0 GPM at 40
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$1,024.20
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Learn More About Noritz EZTR40-NG
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 5.5 GPM at 40
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$1,513.00
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Learn More About Bosch Thermotechnology T9900I SE 199
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. (SCAQMD Rule 1146.2 Compliant). (< 40 ng/J or 55 PPM). Ratings: 11.2 GPM at 35 F Rise, 8.7 GPM at 45 F Rise, 7.2 GPM at 55 F Rise, 5.2 GPM at 75 F Rise. 199k Effective BTU/h.
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$1,972.00
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Learn More About Noritz NRC111-DV-NG
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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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$1,745.00
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Learn More About Takagi T-H3J-DV-N
Takagi
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 6.7 GPM at 40
1% Buy This
$870.00
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Learn More About Takagi T-H3-OS-N
Takagi
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). 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 Effective BTU/h.
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$1,099.00
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Learn More About Takagi TK-540P-NIH
Takagi
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). 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 Effective BTU/h.
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$1,299.00
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Learn More About Bosch Thermotechnology T9900 SE 199
$1,770.00
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Learn More About Noritz EZ98DV-NG
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.6 GPM at 40
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$1,607.00
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Learn More About Rheem Tankless RTG-84DVLN
$799.00
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Flow Rate at 40F Rise
Flow Rate at 50F Rise
Flow Rate at 60F Rise
Flow Rate at 70F Rise