Whole House Natural Gas Tankless Water Heaters

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Learn More About Noritz NRC661DV-NGacw-sale-badge
Noritz 120,000 BTU Natural Gas Direct Vent Tankless Water Heater
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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.
Item#: 31852
Model#: NRC661DV-NG
Brand: Noritz
$1,052.69
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Noritz 120,000 BTU Natural Gas Direct Vent Tankless Water Heater
Learn More About Noritz NRC711OD-NGacw-sale-badge
Noritz 157,000 BTU Natural Gas Outdoor Tankless Water Heater
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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. 148k Effective BTU/h.
Item#: 31857
Model#: NRC711OD-NG
Brand: Noritz
$1,295.62
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Noritz 157,000 BTU Natural Gas Outdoor Tankless Water Heater
Learn More About A.O. Smith ATO-240H-Nacw-sale-badge
A.O. Smith 5 GPM 0.95 UEF NG Tankless Water Heater Outdoor
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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. 171k Effective BTU/h.
Item#: 69993
Model#: ATO-240H-N
Brand: A.O. Smith
$1,022.00
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A.O. Smith 5 GPM 0.95 UEF NG Tankless Water Heater Outdoor
Learn More About Takagi T-H3-DV-NGacw-sale-badge
Takagi 199,000 BTU Tankless Water Heater Natural Gas Direct Vent
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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. 189k Effective BTU/h.
Item#: 70551
Model#: T-H3-DV-NG
Brand: Takagi
$1,269.00
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Takagi 199,000 BTU Tankless Water Heater Natural Gas Direct Vent
Learn More About Takagi TK-510U-E-NGacw-sale-badge
Takagi 199,000 BTU Tankless Water Heater Natural Gas/Propane Outdoor
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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.
Item#: 70572
Model#: TK-510U-E-NG
Brand: Takagi
$1,153.00
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Takagi 199,000 BTU Tankless Water Heater Natural Gas/Propane Outdoor
Learn More About Noritz NR83DVCacw-sale-badge
Noritz 5.0 GPM at 60F Rise 0.85 UEF NG DV Tankless Water Heater
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EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Concentric Vent. Ratings: 7.6 GPM at 40
Item#: 73560
Model#: NR83DVC
Brand: Noritz
$1,253.23
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Noritz 5.0 GPM at 60F Rise 0.85 UEF NG DV Tankless Water Heater
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Noritz 180,000 BTU Natural Gas Outdoor Tankless Water Heater
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Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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.
Item#: 82315
Model#: NR83OD-NG
Brand: Noritz
$1,253.23
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Noritz 180,000 BTU Natural Gas Outdoor Tankless Water Heater
Learn More About Rheem Tankless RTG-70DVLNacw-sale-badge
Rheem 160,000 BTU Tankless Water Heater Natural Gas Concentric Vent
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EnergyStar Non-Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD rule 1146.2 Compliant). Ratings: 6.5 GPM at 40° F Rise, 5.4 GPM at 50° F Rise, 4.5 GPM at 60° F Rise, 3.9 GPM at 70° F Rise.
Item#: 97831
Model#: RTG-70DVLN
Brand: Rheem Tankless
$804.00
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Rheem 160,000 BTU Tankless Water Heater Natural Gas Concentric Vent
Learn More About A.O. Smith ATI-240HX3-Nacw-sale-badge
A.O. Smith X3 - 5.1 GPM at 60° F Rise - 0.94 UEF - Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). 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.
Item#: 123206
Model#: ATI-240HX3-N
Brand: A.O. Smith
$1,295.00
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A.O. Smith X3 - 5.1 GPM at 60° F Rise - 0.94 UEF - Gas Tankless Water Heater - Indoor
Learn More About Takagi TK-340X3-NIHacw-sale-badge
Takagi X3 - 5.8 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). Ratings: 8 GPM at 40° F Rise, 6.8 GPM at 50° F Rise, 5.8 GPM at 60° F Rise, 4.9 GPM at 70° F Rise. 180k Max BTU/h.
Item#: 123215
Model#: TK-340X3-NIH
Brand: Takagi
$1,421.00
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Takagi X3 - 5.8 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Indoor
Learn More About Takagi TK-540X3-NIHacw-sale-badge
Takagi X3 - 6.2 GPM at 60° F Rise - 0.93 UEF - Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). 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.
Item#: 123217
Model#: TK-540X3-NIH
Brand: Takagi
$1,558.00
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Takagi X3 - 6.2 GPM at 60° F Rise - 0.93 UEF - Gas Tankless Water Heater - Indoor
Learn More About A.O. Smith ATO-240HX3-Nacw-sale-badge
A.O. Smith X3 - 5.1 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). 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.
Item#: 123224
Model#: ATO-240HX3-N
Brand: A.O. Smith
$1,295.00
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A.O. Smith X3 - 5.1 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
Learn More About A.O. Smith ATO-540HX3-Nacw-sale-badge
A.O. Smith X3 - 6.2 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). 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.
Item#: 123228
Model#: ATO-540HX3-N
Brand: A.O. Smith
$1,558.00
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A.O. Smith X3 - 6.2 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
Learn More About Rheem Tankless RTGH-90DVLN-3acw-sale-badge
Rheem RTGH - 5.8 GPM at 60° Rise - Gas Water Heater - Direct Vent
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Item#: 151482
Model#: RTGH-90DVLN-3
Brand: Rheem Tankless
$1,336.00
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Rheem RTGH - 5.8 GPM at 60° Rise - Gas Water Heater - Direct Vent
Learn More About Takagi T-H3-OS-NGacw-sale-badge
Takagi 199,000 BTU Tankless Water Heater Natural Gas Outdoor
5.0 out of 5 stars 5.0 out of 5 stars
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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. 189k Effective BTU/h.
Item#: 70557
Model#: T-H3-OS-NG
Brand: Takagi
$1,269.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Takagi 199,000 BTU Tankless Water Heater Natural Gas Outdoor
Learn More About Takagi T-H3S-OS-NGacw-sale-badge
Takagi 180,000 BTU Tankless Water Heater Natural Gas Outdoor
5.0 out of 5 stars 5.0 out of 5 stars
(1)
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 8.0 GPM at 40° F Rise, 6.8 GPM at 50° F Rise, 5.7 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 171k Effective BTU/h.
Item#: 70560
Model#: T-H3S-OS-NG
Brand: Takagi
$1,142.00
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Takagi 180,000 BTU Tankless Water Heater Natural Gas Outdoor
Learn More About Bosch Thermotechnology T9800 SE 160acw-sale-badge
Bosch 160,000 BTU .92 UEF Tankless Water Heater Indoor Direct Vent
5.0 out of 5 stars 5.0 out of 5 stars
(1)
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.0 GPM at 40
Item#: 73648
Model#: T9800 SE 160
Brand: Bosch Thermotechnology
$1,534.00
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Bosch 160,000 BTU .92 UEF Tankless Water Heater Indoor Direct Vent
Learn More About Noritz NRC661OD-NGacw-sale-badge
Noritz 120,000 BTU Natural Gas Outdoor Tankless Water Heater
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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.
Item#: 31853
Model#: NRC661OD-NG
Brand: Noritz
$1,052.69
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Noritz 120,000 BTU Natural Gas Outdoor Tankless Water Heater
Learn More About Noritz NRC711DV-NGacw-sale-badge
Noritz 157,000 BTU Natural Gas Direct Vent Tankless Water Heater
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EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). 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. 148k Effective BTU/h.
Item#: 31856
Model#: NRC711DV-NG
Brand: Noritz
$1,295.62
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Noritz 157,000 BTU Natural Gas Direct Vent Tankless Water Heater
Learn More About Noritz NR662OD-NGacw-sale-badge
Noritz 140,000 BTU Natural Gas Outdoor Tankless Water Heater
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EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 5.8 GPM at 40
Item#: 32018
Model#: NR662OD-NG
Brand: Noritz
$899.56
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Noritz 140,000 BTU Natural Gas Outdoor Tankless Water Heater
Learn More About A.O. Smith ATI-340H-Nacw-sale-badge
A.O. Smith 5.7 GPM 0.95 UEF NG Tankless Water Heater DV
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EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 8.0 GPM at 40° F Rise, 6.8 GPM at 50° F Rise, 5.7 GPM at 60° F Rise, 4.8 GPM at 70° F Rise. 171k Effective BTU/h.
Item#: 61570
Model#: ATI-340H-N
Brand: A.O. Smith
$1,142.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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A.O. Smith 5.7 GPM 0.95 UEF NG Tankless Water Heater DV
Learn More About A.O. Smith ATI-540H-Nacw-sale-badge
A.O. Smith 6.3 GPM 0.93 UEF Indoor NG Tankless Water Heater DV
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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. 189k Effective BTU/h.
Item#: 61571
Model#: ATI-540H-N
Brand: A.O. Smith
$1,269.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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A.O. Smith 6.3 GPM 0.93 UEF Indoor NG Tankless Water Heater DV
Learn More About A.O. Smith ATI-240H-Nacw-sale-badge
A.O. Smith 5 GPM 0.94 UEF NG Tankless Water Heater DV
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Item#: 61572
Model#: ATI-240H-N
Brand: A.O. Smith
$1,022.00
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A.O. Smith 5 GPM 0.94 UEF NG Tankless Water Heater DV
Learn More About A.O. Smith ATI-140H-Nacw-sale-badge
A.O. Smith 3.8 GPM 0.90 UEF NG Tankless Water Heater DV
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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.
Item#: 61575
Model#: ATI-140H-N
Brand: A.O. Smith
$845.00
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A.O. Smith 3.8 GPM 0.90 UEF NG Tankless Water Heater DV