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Collection: Rinnai

Rinnai has been innovating home and water heating since 1920, offering high-efficiency tankless water heaters, boilers, and HVAC systems. Known for reliability, advanced technology, and eco-friendly performance, Rinnai products deliver endless hot water, precise heating, and long-lasting comfort.

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145 products

Rinnai TRW Series 33 GPM 597,000 BTU Indoor Natural Gas 3 Unit Sensei CX Tankless Water Heater Wall Hanging Rack System - TRW03CXIN

Rinnai TRW Series 33 GPM 597,000 BTU Indoor Natural Gas 3 Unit Sensei CX Tankless Water Heater Wall Hanging Rack System - TRW03CXIN

SKU #: RINTRW03CXIN   |   MPN #: TRW03CXIN

Regular price $10,716.70
Sale price $10,716.70 Regular price $0.00
MSRP: $11,020

Special Order

Rinnai TRW Series 22 GPM 398,000 BTU Indoor Outdoor 2 Unit Sensei CXP Tankless Water Heater Wall Hanging Rack System with Integrated Pump - TRW02CXPIN

Rinnai TRW Series 22 GPM 398,000 BTU Indoor Outdoor 2 Unit Sensei CXP Tankless Water Heater Wall Hanging Rack System with Integrated Pump - TRW02CXPIN

SKU #: RINTRW02CXPIN   |   MPN #: TRW02CXPIN

Regular price $7,903.07
Sale price $7,903.07 Regular price $0.00
MSRP: $7,970

Special Order

Rinnai TRW Series 33 GPM 597,000 BTU Indoor Natural Gas 3 Unit Sensei CXP Tankless Water Heater Wall Hanging Rack System with Integrated Pump - TRW03CXPIN

Rinnai TRW Series 33 GPM 597,000 BTU Indoor Natural Gas 3 Unit Sensei CXP Tankless Water Heater Wall Hanging Rack System with Integrated Pump - TRW03CXPIN

SKU #: RINTRW03CXPIN   |   MPN #: TRW03CXPIN

Regular price $11,334.37
Sale price $11,334.37 Regular price $0.00
MSRP: $11,705

Special Order

Rinnai TRW Series 22 GPM 398,000 BTU Indoor Outdoor 2 Unit Sensei CX Tankless Water Heater Wall Hanging Rack System - TRW02CXIN

Rinnai TRW Series 22 GPM 398,000 BTU Indoor Outdoor 2 Unit Sensei CX Tankless Water Heater Wall Hanging Rack System - TRW02CXIN

SKU #: RINTRW02CXIN   |   MPN #: TRW02CXIN

Regular price $7,121.78
Sale price $7,121.78 Regular price $0.00
MSRP: $7,320

Special Order

Rinnai TRS Series 66 GPM 1,194,000 BTU Indoor Outdoor Sensei CX 6 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS06CXIN

Rinnai TRS Series 66 GPM 1,194,000 BTU Indoor Outdoor Sensei CX 6 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS06CXIN

SKU #: RINTRS06CXIN   |   MPN #: TRS06CXIN

Regular price $23,487.47
Sale price $23,487.47 Regular price $0.00
MSRP: $24,960

Special Order

Rinnai TRS Series 44 GPM 796,000 BTU Indoor Outdoor Sensei CX 4 Unit Free-Standing Tankless Water Heater Rack System - TRS04CXIN

Rinnai TRS Series 44 GPM 796,000 BTU Indoor Outdoor Sensei CX 4 Unit Free-Standing Tankless Water Heater Rack System - TRS04CXIN

SKU #: RINTRS04CXIN   |   MPN #: TRS04CXIN

Regular price $15,665.42
Sale price $15,665.42 Regular price $0.00
MSRP: $16,490

Special Order

Rinnai TRS Series 55 GPM 995,000 BTU Indoor Outdoor Sensei CX 5 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS05CXIN

Rinnai TRS Series 55 GPM 995,000 BTU Indoor Outdoor Sensei CX 5 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS05CXIN

SKU #: RINTRS05CXIN   |   MPN #: TRS05CXIN

Regular price $19,588.38
Sale price $19,588.38 Regular price $0.00
MSRP: $20,725

Special Order

Rinnai TRS Series 22 GPM 398,000 BTU Indoor Outdoor Sensei CX 2 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS02ILCXIN

Rinnai TRS Series 22 GPM 398,000 BTU Indoor Outdoor Sensei CX 2 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS02ILCXIN

SKU #: RINTRS02ILCXIN   |   MPN #: TRS02ILCXIN

Regular price $8,083.41
Sale price $8,083.41 Regular price $0.00
MSRP: $8,170

Special Order

Rinnai TRS Series 33 GPM 597,000 BTU Indoor Outdoor Sensei CX 3 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS03ILCXIN

Rinnai TRS Series 33 GPM 597,000 BTU Indoor Outdoor Sensei CX 3 Unit Free-Standing Inline Tankless Water Heater Rack System - TRS03ILCXIN

SKU #: RINTRS03ILCXIN   |   MPN #: TRS03ILCXIN

Regular price $11,920.48
Sale price $11,920.48 Regular price $0.00
MSRP: $12,355

Special Order

Rinnai TRS Series 33 GPM 597,000 BTU Indoor Outdoor Sensei CX 3 Unit Free-Standing Tankless Water Heater Rack System - TRS03CXIN

Rinnai TRS Series 33 GPM 597,000 BTU Indoor Outdoor Sensei CX 3 Unit Free-Standing Tankless Water Heater Rack System - TRS03CXIN

SKU #: RINTRS03CXIN   |   MPN #: TRS03CXIN

Regular price $11,920.48
Sale price $11,920.48 Regular price $0.00
MSRP: $12,355

Special Order

Rinnai Sensei CX Series 9 GPM 160,000 BTU Indoor Outdoor Commercial Tankless Water Heater with Integrated Pump - CXP160IN

Rinnai Sensei CX Series 9 GPM 160,000 BTU Indoor Outdoor Commercial Tankless Water Heater with Integrated Pump - CXP160IN

SKU #: RINCXP160IN   |   MPN #: CXP160IN

Regular price $2,390.31
Sale price $2,390.31 Regular price $0.00
MSRP: $2,553

Special Order

Rinnai Commerical Neutralizer Tank With Media - 103000067

Rinnai Commerical Neutralizer Tank With Media - 103000067

SKU #: RIN103000067   |   MPN #: 103000067

Regular price $796.14
Sale price $796.14 Regular price $0.00
MSRP: $801

Special Order

Rinnai I Series Primary-Secondary Heating Kit for i060S, i90S, i120S, and i150S Boilers - 807000213

Rinnai I Series Primary-Secondary Heating Kit for i060S, i90S, i120S, and i150S Boilers - 807000213

SKU #: RIN807000213   |   MPN #: 807000213

Regular price $500.81
Sale price $500.81 Regular price $0.00
MSRP: $500.81

Available in stock

Rinnai I Series Primary-Secondary Heating Kit for i060C, i090C, and i120C Commercial Boilers - 807000212

Rinnai I Series Primary-Secondary Heating Kit for i060C, i090C, and i120C Commercial Boilers - 807000212

SKU #: RIN807000212   |   MPN #: 807000212

Regular price $446.27
Sale price $446.27 Regular price $0.00
MSRP: $446.27

Available in stock

Rinnai EZ Connect Cable - REU-EZC-3

Rinnai EZ Connect Cable - REU-EZC-3

SKU #: RINREUEZC3   |   MPN #: REU-EZC-3

Regular price $82.63
Sale price $82.63 Regular price $0.00
MSRP: $90

Available in stock

Rinnai Dedicated Return with Isolation Valves And PRV - 107000639

Rinnai Dedicated Return with Isolation Valves And PRV - 107000639

SKU #: RIN107000639   |   MPN #: 107000639

Regular price $221.48
Sale price $221.48 Regular price $0.00
MSRP: $252

Available in stock

Rinnai Internal Add-on Recirculation Pump Conversion Kit - RX2RXPCK

Rinnai Internal Add-on Recirculation Pump Conversion Kit - RX2RXPCK

SKU #: RINRX2RXPCK   |   MPN #: RX2RXPCK

Regular price $558.09
Sale price $558.09 Regular price $0.00
MSRP: $649

Available in stock

Rinnai CX Cascade Cable Harness - 10' Length - REUCSAC1

Rinnai CX Cascade Cable Harness - 10' Length - REUCSAC1

SKU #: RINREUCSAC1   |   MPN #: REUCSAC1

Regular price $70.66
Sale price $70.66 Regular price $0.00
MSRP: $76

Available in stock

Rinnai Universal Non-Condensing Horizontal Termination Kit in White - 223181

Rinnai Universal Non-Condensing Horizontal Termination Kit in White - 223181

SKU #: RIN223181   |   MPN #: 223181

Regular price $132.27
Sale price $132.27 Regular price $0.00
MSRP: $159

Available in stock

Rinnai CX Cascade Cable Harness - 26' Length - REUCSAC2

Rinnai CX Cascade Cable Harness - 26' Length - REUCSAC2

SKU #: RINREUCSAC2   |   MPN #: REUCSAC2

Regular price $134.08
Sale price $134.08 Regular price $0.00
MSRP: $140

Special Order

Rinnai FAQ

What types of water heaters does Rinnai offer?

Rinnai provides a wide range of tankless water heaters, including compact non-condensing models, high-capacity units for large homes, and electric tankless water heaters, all designed for energy-efficient, on-demand hot water.

Are Rinnai tankless water heaters energy-efficient?

Yes, Rinnai tankless water heaters heat water only when needed, reducing utility bills and greenhouse gas emissions while providing continuous hot water for multiple showers or appliances.

What is a Rinnai combi boiler?

A Rinnai combi boiler combines space heating and on-demand hot water in a single compact unit, offering high efficiency, user-friendly controls, and ENERGY STAR-certified performance.

Can Rinnai water heaters support large homes?

Yes, high-capacity Rinnai tankless water heaters deliver up to 5 gallons per minute, allowing multiple showers or appliances to run simultaneously without running out of hot water.

Do Rinnai products support modern HVAC systems?

Rinnai’s hydronic air handlers and direct vent furnaces integrate with tankless water heaters and boilers to provide efficient heating, hot water, and energy savings, even in homes without ductwork.

How reliable are Rinnai tankless water heaters?

Rinnai water heaters are built for long-term durability, often lasting twice as long as traditional tank heaters. Each unit is tested before shipping and comes with a 1-year labor warranty, with optional extended coverage.

Is installation and service support available for Rinnai products?

Yes, Rinnai offers local service, a full network of trained installers, and reliable access to parts, making it easy to select, install, and maintain tankless water heaters.

Can Rinnai water heaters improve home comfort?

Absolutely. Their tankless hot water heaters provide endless hot water, precise temperature control, and efficient heating, helping families enjoy a consistent, comfortable lifestyle.

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