Gas Tankless Water Heaters

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Gas tankless water heaters can use either natural gas or liquid propane for their fuel source and be installed either indoors or outdoors. If you are looking for this type of versatility, shop our wide selection of gas tankless water heaters from the top brands and find the perfect match today.
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Model Number V53DEP is the Number 1 Seller
Learn More About Rinnai V53DEP
Rinnai
EnergyStar Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 4.9 GPM at 40
9% Buy This
$583.20
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Model Number TK-110U-E-N is the Number 2 Seller
Learn More About Takagi TK-110U-E-N
$549.00
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Model Number T-H3M-DV-P is the Number 3 Seller
Learn More About Takagi T-H3M-DV-P
$699.00
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Model Number TK-310U-E-N is the Number 4 Seller
Learn More About Takagi TK-310U-E-N
$729.00
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Model Number T-H3-DV-N is the Number 5 Seller
Learn More About Takagi T-H3-DV-N
$1,049.00
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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.
2% Buy This
$599.00
Only 2 In-Stock
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Learn More About Rinnai RU199EP
$1,749.75
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Learn More About Takagi T-H3M-DV-N
$699.00
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Learn More About Takagi TK-510U-I-N
$929.00
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Learn More About Rinnai V65IP
Rinnai
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 6.2 GPM at 40
2% Buy This
$714.60
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Learn More About Noritz NR98-OD-NG
$1,239.00
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Learn More About Rheem Tankless RTG-70XLP
$699.00
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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 Takagi T-H3-DV-P
$1,049.00
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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
2% Buy This
$1,239.00
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Learn More About Takagi T-H3J-DV-P
Takagi
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 6.7 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. 152k Effective BTU/h.
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$849.00
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Learn More About Rinnai V94IP
$1,024.20
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Learn More About A.O. Smith ATI-540H-P
$1,170.00
Only 1 In-Stock
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Learn More About Rheem Tankless RTGH-95DVLN
$1,149.00
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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-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.
1% Buy This
$729.00
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Learn More About Noritz NR98-SV-LP
EnergyStar Non-Condensing Water Heater. Ultra Low Nox Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.4 GPM at 40
1% Buy This
$1,239.00
Only 3 In-Stock
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Learn More About Rheem Tankless RTG-84DVLN
$799.00
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Learn More About Takagi T-H3M-OS-P
Takagi
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 5.4 GPM at 40 F Rise, 4.4 GPM at 50 F Rise, 3.8 GPM at 60 F Rise, 3.2 GPM at 70 F Rise. 112k Effective BTU/h.
1% Buy This
$729.00
Only 5 In-Stock
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Flow Rate at 40F Rise
Flow Rate at 50F Rise
Flow Rate at 60F Rise
Flow Rate at 70F Rise