Indoor Natural Gas Tankless Water Heaters

Learn More About Rinnai CXP160INacw-sale-badge
Rinnai Sensei™ CXP160iN - Commercial 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
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Wall Mounted, Condensing Boiler Water Heater Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.8 GPM at 40° F Rise, 6.2 GPM at 50° F Rise, 5.2 GPM at 60° F Rise, 4.4 GPM at 70° F Rise. 160 k Effective BTU/h.
Item#: 154044
Model#: CXP160IN
Brand: Rinnai
$1,614.20
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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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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
Rinnai Sensei™ CXP160iN - Commercial 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
Learn More About Rinnai CX160INacw-sale-badge
Rinnai Sensei™ CX160iN - Commercial 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
Write A Review
Wall Mounted, Condensing Boiler Water Heater Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.8 GPM at 40° F Rise, 6.2 GPM at 50° F Rise, 5.2 GPM at 60° F Rise, 4.4 GPM at 70° F Rise. 160 k Effective BTU/h.
Item#: 154046
Model#: CX160IN
Brand: Rinnai
$1,359.40
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Free Shipping
*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.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
Rinnai Sensei™ CX160iN - Commercial 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
Learn More About A.O. Smith ATHR-160Macw-sale-badge
A.O. Smith Adapt™ - Residential 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions (14 ng/J or 20 PPM). Ratings: 7.5 GPM at 40° F Rise, 6 GPM at 50° F Rise, 5.1 GPM at 60° F Rise, 4.3 GPM at 70° F Rise. 160k BTU/h.
Item#: 154111
Model#: ATHR-160M
Brand: A.O. Smith
$1,669.23
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Free Shipping
*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.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
A.O. Smith Adapt™ - Residential 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
Learn More About A.O. Smith ATHR-180Macw-sale-badge
A.O. Smith Adapt™ - Residential 180,000 BTU - Natural Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions (14 ng/J or 20 PPM). Ratings: 8.5 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 BTU/h.
Item#: 154112
Model#: ATHR-180M
Brand: A.O. Smith
$1,856.86
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Free Shipping
*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.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
A.O. Smith Adapt™ - Residential 180,000 BTU - Natural Gas Tankless Water Heater - Indoor
Learn More About A.O. Smith ATHR-199Macw-sale-badge
A.O. Smith Adapt™ - Residential 199,000 BTU - Natural Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions (14 ng/J or 20 PPM). 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.
Item#: 154113
Model#: ATHR-199M
Brand: A.O. Smith
$2,053.05
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Free Shipping
*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.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
A.O. Smith Adapt™ - Residential 199,000 BTU - Natural Gas Tankless Water Heater - Indoor
Learn More About A.O. Smith ATHR-160X3acw-sale-badge
A.O. Smith Adapt™ with X3® Scale Prevention - Residential 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
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EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions (14 ng/J or 20 PPM). Ratings: 7.5 GPM at 40° F Rise, 6 GPM at 50° F Rise, 5.1 GPM at 60° F Rise, 4.3 GPM at 70° F Rise. 160k BTU/h.
Item#: 154114
Model#: ATHR-160X3
Brand: A.O. Smith
$1,849.65
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Free Shipping
*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.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
In-Stock
A.O. Smith Adapt™ with X3® Scale Prevention - Residential 160,000 BTU - Natural Gas Tankless Water Heater - Indoor
Learn More About A.O. Smith ATHR-199X3acw-sale-badge
A.O. Smith Adapt™ with X3® Scale Prevention - Residential 199,000 BTU - Natural Gas Tankless Water Heater - Indoor
Write A Review
EnergyStar Condensing Water Heater. Ultra-Low NOx Emissions (14 ng/J or 20 PPM). 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.
Item#: 154116
Model#: ATHR-199X3
Brand: A.O. Smith
$2,233.46
Free Shipping
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Free Shipping
*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.
Free Lift Gate
Learn More
Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
A.O. Smith Adapt™ with X3® Scale Prevention - Residential 199,000 BTU - Natural Gas Tankless Water Heater - Indoor