Rinnai is headquartered in Nagoya, Japan, with 86 sales offices and 20 branches in addition to 6 domestic production facilities. Rinnai maintains its presence international with subsidiaries and affiliates in Brazil, Australia, Hong Kong, Indonesia, Malaysia, the People's Republic of China, New Zealand, Singapore, South Korea, Thailand, Taiwan, the United States and the United Kingdom.

History and Experience

Rinnai has more than 30 million tankless water heaters installed throughout the globe. They have been heating water efficiently since 1964, and since 1974, they have been selling their heating appliances in the US. Rinnai is the world's largest manufacturer gas appliances.


Rinnai was chosen by the home builders in Builder Magazine as the 2010 Builders' Brand Leader. Rinnai also received the Super Nova Star Award for energy efficiency, a prestigious award from the Alliance to Save Energy. Bestcovery.com also picked Rinnai as The Best Tankless Whole-House Water Heater.

Reliability and Quality

“If you want it done right...” All Rinnai products and components are designed, engineered and built in-house. Their segment leading appliances show over 45 years of improvements and innovations. Their experience in manufacturing and developing tankless water heaters is just as comforting as the unending hot water supply.

The Rinnai System

The Rinnai system is a solution that comprehensively takes advantage of the flexibility and efficiency of the tankless water heater. Use the highly efficient Rinnai tankless water heaters to heat your home. Use controllers to precisely set water temperatures for multiple areas in your home. All of this ensures comfort and also prevents scalding accidents. Even better, their unique concentric venting system, intended for units installed indoors, requires only a single penetration for both exhaust and intake. This proprietary vent pipe removes the guess work from finding the proper materials, maximizing space usage, and safety.


With Rinnai's tankless water heater, you get all the reliability and durability of a copper heat exchanger which is both commercial grade and comes with an industry-leading 12-year limited warranty.

Rinnai 224050 Concentric 45 Degree Elbow (2 Pack)
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$60.00 $43.95

Rinnai 224275 2" to 12" Telescoping Vent (plastic)
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$90.00 $65.95

Rinnai 50171949 Universal Tile/Shingle Roof Flashing (1/12 to 6/12)
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$90.00 $66.95

Rinnai 224265 Concentric Non-Condensing Vent Pipe Extension, 19.5"
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$80.00 $58.95

Rinnai 224053 Concentric Vent Pipe Extension, 39"
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$60.00 $44.95

Rinnai 224052 Concentric Vent Pipe Extension, 19.5"
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$60.00 $49.95

Rinnai 224063 Concentric 90 Degree Elbow
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$50.00 $39.95

Rinnai Bottom/Pipe Cover for Ultra Series Tankless Water Heaters
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$159.95 $119.95

Rinnai 242141 Metal Roof Flashing
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$110.00 $88.95

Rinnai 184118-S Concentric Above-Roof Discharge Termination, 18"
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$80.00 $63.95

Rinnai 224054 2" to 12" Telescoping Vent (metal)
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$48.00 $39.95

Rinnai/Ubbink STDKITVA-A 223181, -A21 223182 Indoor Venting Sideways
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$140.00 $93.95

Rinnai 224087PP Concentric Condensing Vent Pipe Extension, 10"
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$40.00 $31.95

Rinnai 224078PP Concentric Condensing 90-Degree Elbow
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$40.00 $30.95

Rinnai 224077PP Concentric Condensing 45-Degree Elbows, 2 piece kit
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$60.00 $42.95

Rinnai PCD03-SM2 Bottom/Pipe Cover for R75LSE and R94LSE Tankless Water Heaters
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$159.95 $139.95

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Rinnai 224250 Concentric 45 Degree Elbows (Metal) (2 Pack)
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$70.00 $62.95

Rinnai 224051 Concentric Vent Pipe Extension, 10"
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$35.00 $27.95

Rinnai RV53iN Interior Tankless Natural Gas Water Heater
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$899.00 $629.00

Rinnai PCD03-SM2 Bottom Pipe Cover, Exterior RL75 RL94 R75LSe R94LSe
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$159.95 $114.84

Rinnai 189951 Universal Shingle Roof Flashing (6/12 to 12/12 pitch)
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$80.00 $60.95