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Rinnai RCB301AN

Rinnai 301K BTU Natural Gas RCB-Series Commercial Wall Boiler 120V

SKU: RCB301AN
Product ID: 110714
$9,230.01 - $9,230.01
$9,230.01
$9,230.01 - $9,230.01
$9,230.01

Product Details Rinnai 301K BTU Natural Gas RCB-Series Commercial Wall Boiler 120V RCB301AN The Rinnai RCB-Series is a high-efficiency, wall-mount...

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Rinnai CHS398100HCXAiN

Rinnai 398K BTU 68" H-Series Hybrid Water Heating System ASME Ultra Low NOx

SKU: CHS398100HCXAiN
Product ID: 110603
$19,425.00 - $19,425.00
$19,425.00
$19,425.00 - $19,425.00
$19,425.00

Product Details Rinnai 398K BTU 68" Natural Gas H-Series Hybrid Water Heating System ASME Ultra Low NOx CHS398100HCXAiN The Rinnai Demand Duo™ H-...

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Rinnai CHS398100HCXVAiN

Rinnai 398K BTU Hybrid Water Heating System Natural Gas H-Series Ultra Low NOx

SKU: CHS398100HCXVAiN
Product ID: 110605
$19,800.00 - $19,800.00
$19,800.00
$19,800.00 - $19,800.00
$19,800.00

Product Details Rinnai 398K BTU 79" Natural Gas H-Series Hybrid Water Heating System ASME Ultra Low NOx CHS398100HCXVAiN The Rinnai Demand Duo H-...

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Rinnai CHS320100HCXViN

Rinnai 320K BTU Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx

SKU: CHS320100HCXViN
Product ID: 110602
$17,250.00 - $17,250.00
$17,250.00
$17,250.00 - $17,250.00
$17,250.00

Product Details Rinnai 320K BTU Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx CHS320100HCXViN The Rinnai Demand Duo H-Series Vert...

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Rinnai CHS398100HCXViN

Rinnai 398K BTU Hybrid Water Heating System Ultra Low NOx Natural Gas H-Series

SKU: CHS398100HCXViN
Product ID: 110606
$18,000.00 - $18,000.00
$18,000.00
$18,000.00 - $18,000.00
$18,000.00

Product Details Rinnai 398K BTU Natural Gas H-Series Hybrid Water Heating System Vertical Ultra Low NOx CHS398100HCXViN The Rinnai Demand Duo H-Se...

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Rinnai CHS398100HCXiN

Rinnai 398K BTU Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx

SKU: CHS398100HCXiN
Product ID: 110604
$17,625.00 - $17,625.00
$17,625.00
$17,625.00 - $17,625.00
$17,625.00

Product Details Rinnai 398K BTU Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx CHS398100HCXiN The Rinnai Demand Duo H-Series (CHS-...

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Rinnai CHS19980RECiP

Rinnai 199K BTU Hybrid Water Heating System 80 Gal Propane R-Series 120V

SKU: CHS19980RECiP
Product ID: 110600
$6,798.75 - $6,798.75
$6,798.75
$6,798.75 - $6,798.75
$6,798.75

Product Details Rinnai 199K BTU 80 Gal Propane Gas R-Series Hybrid Water Heating System 120V CHS19980RECiP The Rinnai Demand Duo R-Series is the ...

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Rinnai CHS19980RECiN

Rinnai 199K BTU Hybrid Water Heating System 80 Gallons Natural Gas 120V

SKU: CHS19980RECiN
Product ID: 110599
$6,798.75 - $6,798.75
$6,798.75
$6,798.75 - $6,798.75
$6,798.75

Product Details Rinnai 199K BTU 80 Gallon Natural Gas R-Series Hybrid Water Heating System Indoor CHS19980RECiN The Rinnai Demand Duo™ R-Series (...

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Rinnai CHS19980HCXiN 01

Rinnai 199K BTU Hybrid Water Heating System Natural Gas H-Series Ultra Low NOx

SKU: CHS19980HCXiN
Product ID: 110598
$9,000.00 - $9,000.00
$9,000.00
$9,000.00 - $9,000.00
$9,000.00

Product Details Rinnai 199K BTU 80 Gal Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx CHS19980HCXiN The Rinnai Demand Duo H-Serie...

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Rinnai CHS160100HCXiN

Rinnai 160K BTU Hybrid Water Heating System Natural Gas H-Series Ultra Low NOx

SKU: CHS160100HCXiN
Product ID: 110593
$8,775.00 - $8,775.00
$8,775.00
$8,775.00 - $8,775.00
$8,775.00

Product Details Rinnai 160K BTU Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx CHS160100HCXiN The Rinnai Demand Duo H-Series (CHS-...

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Rinnai CHS199100RECiP

Rinnai 199,000 BTU Hybrid Water Heating System Propane Gas R-Series 120V

SKU: CHS199100RECiP
Product ID: 110597
$6,960.00 - $6,960.00
$6,960.00
$6,960.00 - $6,960.00
$6,960.00

Product Details Rinnai 199,000 BTU Propane Gas R-Series Hybrid Water Heating System 120V CHS199100RECiP The Rinnai Demand Duo R-Series (CHS199-RE ...

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Rinnai CHS16080HCXiN

Rinnai 160K BTU Hybrid Water Heating System H-Series Ultra Low NOx Natural Gas

SKU: CHS16080HCXiN
Product ID: 110594
$8,362.50 - $8,362.50
$8,362.50
$8,362.50 - $8,362.50
$8,362.50

Product Details Rinnai 160K BTU 80 Gal Natural Gas H-Series Hybrid Water Heating System Ultra Low NOx CHS16080HCXiN The Rinnai Demand Duo H-Serie...

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Rinnai IP150S

Rinnai 150,000 BTU Condensing Gas Boiler Heat Only Wall Mounted Natural Gas

SKU: IP150S
Product ID: 110690
$2,523.50 - $2,523.50
$2,523.50
$2,523.50 - $2,523.50
$2,523.50

Product Details Rinnai 150,000 BTU Condensing Gas Boiler Heat Only Wall Mounted Natural Gas IP150S The I-SERIES Plus™ Solo Condensing Gas Boiler f...

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Rinnai IP090S

Rinnai 90,000 BTU Condensing Gas Boiler Heat Only Wall Mounted Natural Gas

SKU: IP090S
Product ID: 110686
$2,433.31 - $2,433.31
$2,433.31
$2,433.31 - $2,433.31
$2,433.31

Product Details Rinnai 90,000 BTU Condensing Gas Boiler Heat Only Wall Mounted Natural Gas IP090S The I-SERIES Plus™ Solo Condensing Gas Boiler fr...

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Rinnai IP060160C

Rinnai 60,000 BTU Condensing Gas Boiler Combined Heater Wall Mounted NG/LP

SKU: IP060160C
Product ID: 110682
$2,522.56 - $2,522.56
$2,522.56
$2,522.56 - $2,522.56
$2,522.56

Product Details Rinnai 60,000 BTU Condensing Gas Boiler Combined Heater Wall Mounted NG/LP IP060160C The I-SERIES Plus™ Combi Condensing Gas Boile...

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Rinnai IP060S

Rinnai 60,000 BTU Condensing Gas Boiler Heater Wall Mounted NG/LP

SKU: IP060S
Product ID: 110683
$2,203.40 - $2,203.40
$2,203.40
$2,203.40 - $2,203.40
$2,203.40

Product Details Rinnai 60,000 BTU Condensing Gas Boiler Heater Wall Mounted NG/LP IP060S The I-SERIES Plus™ Solo Condensing Gas Boiler from Rinnai...

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Rinnai CXP160iN

Rinnai 160K BTU Water Heater Tankless Natural/Propane Gas Indoor Condensing

SKU: CXP160iN
Product ID: 110637
$1,787.10 - $1,787.10
$1,787.10
$1,787.10 - $1,787.10
$1,787.10

Product Details Rinnai 160K BTU Water Heater Tankless Natural/Propane Gas Indoor Condensing CXP160iN The Rinnai SENSEI® CX Series features a new, ...

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Rinnai CX160iN

Rinnai 160K BTU Tankless Water Heater Natural/Propane Gas Condensing Indoor

SKU: CX160iN
Product ID: 110635
$1,505.70 - $1,505.70
$1,505.70
$1,505.70 - $1,505.70
$1,505.70

Product Details Rinnai 160K BTU Tankless Water Heater Natural/Propane Gas Condensing Indoor CX160iN The Rinnai SENSEI™ CX Series is built for the ...

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Rinnai CXP199iN

Rinnai 199K BTU Tankless Water Heater Natural/Propane Gas Condensing Indoor

SKU: CXP199iN
Product ID: 110638
$2,228.10 - $2,228.10
$2,228.10
$2,228.10 - $2,228.10
$2,228.10

Product Details Rinnai 199K BTU Tankless Water Heater Natural/Propane Gas Condensing Indoor CXP199iN The Rinnai SENSEI CX Series is built for the ...

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Rinnai REP199IP

Rinnai 199,000 BTU Water Heater Tankless Propane Gas Indoor Non-Condensing

SKU: REP199IP
Product ID: 110744
$1,535.10 - $1,535.10
$1,535.10
$1,535.10 - $1,535.10
$1,535.10

Product Details Rinnai 199,000 BTU Water Heater Tankless Propane Gas Indoor Non-Condensing REP199IP The Rinnai REP199iP delivers the perfect combi...

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Rinnai REP199IN

Rinnai 199K BTU Water Heater Tankless Natural Gas Non-Condensing Indoor

SKU: REP199IN
Product ID: 110743
$1,535.10 - $1,535.10
$1,535.10
$1,535.10 - $1,535.10
$1,535.10

Product Details Rinnai 199K BTU Water Heater Tankless Natural Gas Non-Condensing Indoor REP199IN The Rinnai REP199iN offers the perfect combinatio...

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Rinnai REP199EP

Rinnai 199K BTU Water Heater Tankless Propane Gas Non-Condensing Outdoor

SKU: REP199EP
Product ID: 110742
$1,535.10 - $1,535.10
$1,535.10
$1,535.10 - $1,535.10
$1,535.10

Product Details Rinnai 199K BTU Water Heater Tankless Propane Gas Non-Condensing Outdoor REP199EP The Rinnai REP199eP delivers the perfect combina...

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Rinnai REP199EN

Rinnai 199,000 BTU Water Heater Tankless Natural Gas Non-Condensing Outdoor

SKU: REP199EN
Product ID: 110741
$1,535.10 - $1,535.10
$1,535.10
$1,535.10 - $1,535.10
$1,535.10

Product Details Rinnai 199,000 BTU Water Heater Tankless Natural Gas Non-Condensing Outdoor REP199EN The Rinnai REP199eN is the perfect combinatio...

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Rinnai TRS03CXiN

Rinnai Commercial Rack System Freestanding & 3 Unit Tankless Water Heater

SKU: TRS03CXiN
Product ID: 110777
$0.00 - $0.00
$0.00
$9,266.25
$9,266.25 - $9,266.25
$9,266.25

Product Details Rinnai Commercial Rack System Freestanding With 3 Unit Tankless Water Heater TRS03CXiN The Rinnai TRS03CXiN Freestanding 3-Unit Ta...

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Rinnai has spent more than a century refining gas and electric appliances around a single idea: deliver heat and hot water the moment they are called for, without the standby waste of older equipment. That engineering focus is why contractors reach for the brand when a job demands consistent output and a long service life, and it is the standard we hold every Rinnai product on this page to.

This collection brings the Rinnai range together in one place so you can match the right system to the property in front of you. Whether you are sizing hot water for a busy household, planning a heating retrofit, or sourcing a replacement for an aging unit, you are working with equipment built to current efficiency standards and supported the way a premium purchase should be. We treat every order as a project to get right, and our team is here when you need guidance on fit, configuration, or compatibility.

Why Choose Rinnai from HVAC Store?

•  Comprehensive warranty coverage on Rinnai equipment gives you peace of mind on every purchase.

•  Expert technical support helps you confirm sizing, fuel type, and configuration before you buy.

•  A curated Rinnai range built to the efficiency and performance standards professionals rely on.

•  Tailored guidance from a team that treats your install as a project worth getting right.

You Might Also Like

•  Tankless Water Heaters - Compare on-demand water heating across brands and BTU outputs to find the right capacity for your property.

•  Electric Heat Pump Water Heaters - See high-efficiency electric water heating that pulls ambient heat to cut energy use over a tank's lifespan.

•  Boilers - Browse residential and light commercial boilers for hydronic heating and combined heating and hot water applications.

•  Rinnai Parts - Source genuine Rinnai conversion kits, vent components, and replacement parts to service and maintain your equipment.

Best Rinnai Systems for...

High-Demand Households

The best Rinnai system for a high-demand household is a condensing tankless water heater, which delivers continuous hot water without the recovery lag of a storage tank. For homes running several fixtures at once, look to the 199,000 BTU SENSEI models for the largest draw.

Energy-Conscious Replacements

The best Rinnai option for an energy-conscious replacement is an electric heat pump water heater, which moves ambient heat into the tank instead of generating it directly. A residential heat pump model suits homes converting from older electric or gas storage tanks to lower long-term operating costs.

Hydronic and Radiant Heating

The best Rinnai equipment for hydronic and radiant heating is a gas boiler, which heats water for distribution through radiators, baseboards, or in-floor loops. Match the unit to the system's load and layout; Rinnai boilers serve both heating-only and combined heating and hot water setups.

Supplemental Room Heating

The best Rinnai choice for supplemental room heating is a direct vent wall furnace, which warms a single space without ducting and vents combustion gases straight outside. A natural gas or propane wall furnace delivers zoned warmth in additions, garages, and rooms the central system struggles to reach.

FAQ

How long does a Rinnai tankless water heater last?

A Rinnai tankless water heater typically lasts 15 to 20 years with proper installation and annual maintenance, well beyond the 10 to 12 years expected from a conventional storage tank. Lifespan depends heavily on water quality and upkeep, so annual flushing and descaling, especially in hard-water areas, is what keeps a unit performing across that span.

How often should I flush a Rinnai tankless water heater?

Flush a Rinnai tankless water heater at least once a year to clear mineral scale from the heat exchanger. Homes with hard water or heavy hot water demand benefit from more frequent flushing, while a household with soft water can often extend the interval to every two to three years. Both condensing and non-condensing models require the same annual service.

What is the difference between condensing and non-condensing Rinnai models?

Condensing Rinnai models use a second heat exchanger to capture residual heat from exhaust gas, reaching higher efficiency (UEF up to roughly 0.96 to 0.98) and allowing flexible PVC venting, but they require a condensate drain. Non-condensing models use a single heat exchanger, cost less upfront, and need metal venting. The SENSEI condensing line covers the high-efficiency end of this collection.

How do I size a Rinnai tankless water heater?

Size a Rinnai tankless water heater by adding the flow rates of the fixtures you expect to run at once, then matching that total to the model's output at your required temperature rise. A shower draws roughly 2 to 2.5 GPM, so two showers plus a sink can mean 5 GPM, and colder groundwater raises the temperature rise the unit must cover. Higher demand points toward the 199,000 BTU models.

Will a Rinnai tankless water heater work during a power outage?

No, a Rinnai tankless water heater will not operate during a power outage, because the unit relies on electronic ignition and controls to heat water on demand. Homes in outage-prone areas can pair the unit with a compatible battery backup to maintain hot water when the power is down. This applies to gas tankless models across the range.

Are Rinnai tankless water heaters worth it?

Rinnai tankless water heaters are worth it for households that want endless on-demand hot water, lower standby energy loss, and a longer service life, though they carry a higher upfront and installation cost than a storage tank. Because the unit heats water only when needed and lasts up to 20 years, the long-term value tends to favor homes with steady or high hot water use over the equipment's lifespan.

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