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Rinnai Tankless Water Heaters

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Rinnai is a market leader in tankless water heaters, offering a wide selection of natural gas and liquid propane models in a variety of sizes. Find the perfect Rinnai tankless water heater for your needs today.
Rinnai - 10% Off SENSEI Tankless Water Heaters
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Model Number RU199IN is a Hot Seller
Learn More About RU199IN
Rinnai RU199 - 6.4 GPM at 60° F Rise - 0.93 UEF - Gas Tankless Water Heater - Direct Vent
Model: RU199IN
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 9.8 GPM at 40° F Rise, 7.6 GPM at 50° F Rise, 6.4 GPM at 60° F Rise, 5.5 GPM at 70° F Rise. 199k Effective BTU/h.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
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On Sale Ends 06/30
$1,455.98
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$1,617.75
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Model Number V75IN is the Number 1 Seller
Learn More About V75IN
Rinnai V75 - 5.0 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Direct Vent
Model: V75IN
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.5 GPM at 40
14% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(13)
Q&As (5)
$789.00
Was 
$1,219.90
SAVE $430.90
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Model Number V65EP is the Number 2 Seller
Learn More About V65EP
Rinnai V65 - 4.1 GPM at 60° F Rise - 0.81 UEF - Propane Tankless Water Heater - Outdoor
Model: V65EP
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 6.2 GPM at 40
12% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(9)
Q&As (3)
$605.00
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$1,023.00
SAVE $418.00
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Model Number V75IP is the Number 3 Seller
Learn More About V75IP
Rinnai V75 - 5.0 GPM at 60° F Rise - 0.81 UEF - Propane Tankless Water Heater - Direct Vent
Model: V75IP
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.5 GPM at 40
9% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(12)
Q&As (5)
$789.00
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$799.00
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Model Number V65IP is the Number 4 Seller
Learn More About V65IP
Rinnai V65 - 4.1 GPM at 60° F Rise - 0.81 UEF - Propane Tankless Water Heater - Direct Vent
Model: V65IP
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 6.2 GPM at 40
9% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(11)
Q&As (6)
$624.00
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$1,101.00
SAVE $477.00
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Model Number V75EN is the Number 5 Seller
Learn More About V75EN
Rinnai V75 - 5.0 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Outdoor
Model: V75EN
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.5 GPM at 40
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(11)
Q&As (3)
$789.00
Was 
$1,219.90
SAVE $430.90
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Learn More About V75EP
Rinnai V75 - 5.0 GPM at 60° F Rise - 0.81 UEF - Propane Tankless Water Heater - Outdoor
Model: V75EP
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.5 GPM at 40
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(9)
Q&As (3)
$789.00
Was 
$1,219.90
SAVE $430.90
In-Stock
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Learn More About RL75IN
Rinnai RL75 - 5.0 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Direct Vent
Model: RL75IN
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.4 GPM at 40
4% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(8)
Q&A (1)
$1,127.25
In-Stock
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Learn More About V94EN
Rinnai V94 - 5.5 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Outdoor
Model: V94EN
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.0 GPM at 40
3% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(8)
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$955.00
Was 
$1,579.00
SAVE $624.00
In-Stock
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Learn More About RUCS75IN
Rinnai RUCS75 4.8 GPM at 60° F - 0.90 UEF - Gas Tankless Water Heater - Direct Vent
Model: RUCS75IN
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Concentric Vent. Ratings: 7.5 GPM at 40
3% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(8)
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$940.00
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$1,543.00
SAVE $603.00
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Learn More About V65EN
Rinnai V65 - 4.1 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Outdoor
Model: V65EN
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 6.2 GPM at 40° F Rise, 5.0 GPM at 50° F Rise, 4.1 GPM at 60° F Rise, 3.5 GPM at 70° F Rise. 123k Effective BTU/h.
3% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(10)
Q&As (3)
$605.00
Was 
$1,023.00
SAVE $418.00
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Learn More About RUR199IN
Rinnai RUR199 - 6.4 GPM at 60° F Rise - 0.93 UEF - Gas Tankless Water Heater - Direct Vent
Model: RUR199IN
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 9.8 GPM at 40° F Rise, 7.6 GPM at 50° F Rise, 6.4 GPM at 60° F Rise, 5.5 GPM at 70° F Rise. 199k Effective BTU/h.
3% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(7)
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On Sale Ends 06/30
$1,813.05
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$2,014.50
SAVE $201.45
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2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RU199IP
Rinnai RU199 - 6.4 GPM at 60° F Rise - 0.93 UEF - Propane Tankless Water Heater - Direct Vent
Model: RU199IP
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 9.8 GPM at 40° F Rise, 7.6 GPM at 50° F Rise, 6.4 GPM at 60° F Rise, 5.5 GPM at 70° F Rise. 199k Effective BTU/h.
3% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
Ask a Question
View All Rinnai Tankless Water Heaters on Sale
On Sale Ends 06/30
$1,455.98
Was 
$1,617.75
SAVE $161.77
In-Stock
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
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Learn More About V53DEP
Rinnai V53 - 3.3 GPM at 60° F Rise - 0.81 UEF - Propane Tankless Water Heater - Outdoor
Model: V53DEP
EnergyStar Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 4.9 GPM at 40
3% Buy This
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$550.00
Was 
$950.00
SAVE $400.00
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Add To Cart
Learn More About V65IN
Rinnai V65 - 4.1 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Direct Vent
Model: V65IN
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 6.2 GPM at 40
2% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(12)
Q&As (6)
$624.00
Was 
$1,101.00
SAVE $477.00
In-Stock
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
Add To Cart
Learn More About RL94IN
Rinnai RL94 - 5.5 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Direct Vent
Model: RL94IN
EnergyStar Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 8.2 GPM at 40° F Rise, 6.5 GPM at 50° F Rise, 5.5 GPM at 60° F Rise, 4.7 GPM at 70° F Rise. 163k Effective BTU/h.
2% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(8)
Q&A (1)
$1,371.00
In-Stock
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RL94EN
Rinnai RL94 - 5.5 GPM at 60° F Rise - 0.81 UEF - Gas Tankless Water Heater - Outdoor
Model: RL94EN
2% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(8)
Q&A (1)
$1,371.00
In-Stock
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Free Shipping
Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RL75EP
Rinnai RL75 - 5.0 GPM at 60° F Rise - 0.80 UEF - Propane Tankless Water Heater - Outdoor
Model: RL75EP
EnergyStar Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 7.4 GPM at 40
2% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(8)
Q&A (1)
$1,127.25
In-Stock
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Free Shipping
Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RL94IP
Rinnai RL94 - 5.5 GPM at 60° F Rise - 0.81 UEF - Propane Tankless Water Heater - Direct Vent
Model: RL94IP
1% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(8)
Q&A (1)
$1,371.00
In-Stock
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RU180IN
Rinnai RU180 - 5.8 GPM at 60° F Rise - 0.92 UEF - Gas Tankless Water Heater - Direct Vent
Model: RU180IN
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.6 GPM at 40° F Rise, 6.9 GPM at 50° F Rise, 5.8 GPM at 60° F Rise, 4.9 GPM at 70° F Rise. 180k Effective BTU/h.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
Ask a Question
View All Rinnai Tankless Water Heaters on Sale
On Sale Ends 06/30
$1,336.50
Was 
$1,485.00
SAVE $148.50
In-Stock
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RU180IP
Rinnai RU180 - 5.8 GPM at 60° F Rise - 0.92 UEF - Propane Tankless Water Heater - Direct Vent
Model: RU180IP
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.6 GPM at 40° F Rise, 6.9 GPM at 50° F Rise, 5.8 GPM at 60° F Rise, 4.9 GPM at 70° F Rise. 180k Effective BTU/h.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
Ask a Question
View All Rinnai Tankless Water Heaters on Sale
On Sale Ends 06/30
$1,336.50
Was 
$1,485.00
SAVE $148.50
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About CU199EN
Rinnai CU199 - 6.4 GPM at 60° F Rise - 97% EF - Gas Tankless Water Heater - Outdoor
Model: CU199EN
EnergyStar Condensing Commercial Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 9.6 GPM at 40° F Rise, 7.6 GPM at 50° F Rise, 6.4 GPM at 60° F Rise, 5.5 GPM at 70° F Rise. 199k Effective BTU/h.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(4)
Ask a Question
View All Rinnai Tankless Water Heaters on Sale
On Sale Ends 06/30
$1,559.25
Was 
$1,732.50
SAVE $173.25
In-Stock
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Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About RUCS65IP
Rinnai RUCS65 4.0 GPM at 60° F - 0.90 UEF - Propane Tankless Water Heater - Direct Vent
Model: RUCS65IP
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Concentric Vent. Ratings: 6.0 GPM at 40
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Ask a Question
$879.00
Was 
$1,430.00
SAVE $551.00
Only 2 In-Stock
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Add To Cart
Learn More About RUCS65IN
Rinnai RUCS65 4.0 GPM at 60° F Rise - 0.90 UEF - Gas Tankless Water Heater - Direct Vent
Model: RUCS65IN
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Concentric Vent. Ratings: 6.0 GPM at 40
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(8)
Ask a Question
$929.00
Was 
$1,362.00
SAVE $433.00
In-Stock
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