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Rinnai 222721NPP

Rinnai 2" Flex Roll 41.5 Foot

SKU: 222721NPP
Product ID: 60512
$0.00 - $0.00
$0.00
$388.00
$388.00 - $388.00
$388.00

Product Details Rinnai 2" Flex Roll 41.5 Foot 222721NPP The Rinnai 2" Flex Roll 41.5 Foot is a high-quality, versatile solution designed to meet ...

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Rinnai 104000171

Rinnai Gas Conversion Kit LP To NG For R75LSi / RL75i Tankless Water Heater

SKU: 104000171
Product ID: 60710
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit LP To NG For R75LSi / RL75i Tankless Water Heater 104000171 The Rinnai 104000171 Gas Conversion Kit i...

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Rinnai 104000170

Rinnai Gas Conversion Kit LP To NG For V53e Tankless Water Heater

SKU: 104000170
Product ID: 60709
$56.00 - $56.00
$56.00
$56.00 - $56.00
$56.00

Product Details Rinnai Gas Conversion Kit LP To NG For V53e Tankless Water Heater 104000170 The Rinnai 104000170 Gas Conversion Kit is a genuin...

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Rinnai 104000169

Rinnai Gas Conversion Kit LP To NG For V53i Tankless Water Heater

SKU: 104000169
Product ID: 60708
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit LP To NG For V53i Tankless Water Heater 104000169 The Rinnai 104000169 Gas Conversion Kit is a genuin...

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Rinnai RX2RXPCK

Rinnai Internal Recirculation Pump Conversion Kit For RX Tankless Heaters

SKU: RX2RXPCK
Product ID: 60827
$649.00 - $649.00
$649.00
$649.00 - $649.00
$649.00

Product Details Rinnai Internal Recirculation Pump Conversion Kit For RX Tankless Heaters RX2RXPCK The Rinnai Internal Recirculation Pump Conversi...

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Rinnai 104000336

Rinnai Recess Box Enclosure For Sensei RX Tankless Water Heater Installation

SKU: RGBCTWHRX
Product ID: 60826
$886.00 - $886.00
$886.00
$886.00 - $886.00
$886.00

Product Details Rinnai Recess Box Enclosure For Sensei RX Tankless Water Heater Installation RGBCTWHRX The Rinnai Recess Box Enclosure For Sensei ...

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Rinnai 103000073

Rinnai Conversion Kit LP To NG For V94E Tankless Water Heater

SKU: 103000073
Product ID: 60706
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit LP To NG For V94E Tankless Water Heater 103000073 Ensure optimal performance when changing your fuel sour...

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Rinnai 103000072

Rinnai Conversion Kit NG To LP For V94Xi Tankless Water Heaters

SKU: 103000072
Product ID: 60705
$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00

Product Details Rinnai Conversion Kit NG To LP For V94Xi Tankless Water Heaters 103000072 Upgrade your Rinnai V94Xi series tankless water heate...

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Rinnai Retrofit Door Kit For RX Tankless Cabinet RGB CTWH Installation

SKU: 104000336
Product ID: 60825
$369.00 - $369.00
$369.00
$369.00 - $369.00
$369.00

Product Details Rinnai Retrofit Door Kit For RX Tankless Cabinet RGB CTWH Installation 104000336 The Rinnai Retrofit Door Kit For RX Tankless Cabi...

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Rinnai PCD11-IB

Rinnai Pipe Cover Sensei CX And CXP Tankless Water Heater Installation

SKU: PCD11-IB
Product ID: 60824
$276.00 - $276.00
$276.00
$276.00 - $276.00
$276.00

Product Details Rinnai Pipe Cover For Sensei CX And CXP Tankless Water Heater Installation PCD11-IB The Rinnai Pipe Cover For Sensei CX And CXP ...

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Rinnai 103000071

Rinnai Conversion Kit LP To NG For V94Xi Tankless Water Heaters

SKU: 103000071
Product ID: 60704
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit LP To NG For V94Xi Tankless Water Heaters 103000071 Easily convert your Rinnai V94Xi tankless water heat...

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Rinnai 104000335

Rinnai Retrofit Door Kit For RX And CX Tankless Cabinet Installation

SKU: 104000335
Product ID: 60823
$341.00 - $341.00
$341.00
$341.00 - $341.00
$341.00

Product Details Rinnai Retrofit Door Kit For RX And CX Tankless Cabinet Installation 104000335 The Rinnai Retrofit Door Kit For RX And CX Tankle...

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Rinnai 103000069

Rinnai Conversion Kit LP To NG For V94i Tankless Water Heaters

SKU: 103000069
Product ID: 60703
$73.00 - $73.00
$73.00
$73.00 - $73.00
$73.00

Product Details Rinnai Conversion Kit LP To NG For V94i Tankless Water Heaters 103000069 Easily convert your Rinnai V94i tankless water heater ...

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Rinnai 107000639

Rinnai Dedicated return with Isolation Valves and PRV For Water Heaters

SKU: 107000639
Product ID: 60822
$252.00 - $252.00
$252.00
$252.00 - $252.00
$252.00

Product Details Rinnai Dedicated return with Isolation Valves and PRV For Water Heaters  107000639 The Rinnai Dedicated return with Isolation Valv...

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Rinnai 109001364

Rinnai Bottom Plate For Pipe Cover RX CX Series Tankless Water Heaters

SKU: 109001364
Product ID: 60821
$76.00 - $76.00
$76.00
$76.00 - $76.00
$76.00

Product Details Rinnai Bottom Plate For Pipe Cover RX CX Series Tankless Water Heaters 109001364 The Rinnai Bottom Plate For Pipe Cover RX CX Se...

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Rinnai 103000062

Rinnai Conversion Kit LP To NG For RUS65e Tankless Water Heater

SKU: 103000062
Product ID: 60698
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit LP To NG For RUS65e Tankless Water Heater 103000062 The Rinnai 103000062 Gas Conversion Kit is a genuine...

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Rinnai RWM103

Rinnai Control R Wi Fi Module For Tankless Water Heater Remote Access

SKU: RWM103
Product ID: 60817
$217.00 - $217.00
$217.00
$217.00 - $217.00
$217.00

Product Details Rinnai Control R Wi Fi Module For Tankless Water Heater Remote Access RWM103 The Rinnai Control R Wi Fi Module For Tankless Water ...

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Rinnai 103000061

Rinnai Conversion Kit LP To NG For RUCS65i Tankless Water Heater

SKU: 103000061
Product ID: 60697
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit LP To NG For RUCS65i Tankless Water Heater 103000061 The Rinnai 103000061 Gas Conversion Kit is a genuin...

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Rinnai 189958

Rinnai Roof Flashing Multi Pitch Assembly For Tankless Heater Venting

SKU: 189958
Product ID: 60815
$100.00 - $100.00
$100.00
$100.00 - $100.00
$100.00

Product Details Rinnai Roof Flashing Multi Pitch Assembly For Tankless Heater Venting 189958 The Rinnai Roof Flashing Multi Pitch Assembly For T...

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Rinnai 169013

Rinnai Metal Pipe Clamp For Easy Installation Securing 2/4 Concentric Vent

SKU: 169013
Product ID: 60511
$0.00 - $0.00
$0.00
$25.00
$25.00 - $25.00
$25.00

Product Details Rinnai Metal Pipe Clamp For Easy Installation Securing 2/4 Concentric Vent Systems The Metal Pipe Clamp for Easy Installation and...

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Rinnai 103000060

Rinnai Conversion Kit LP To NG For RUS75e Tankless Water Heater

SKU: 103000060
Product ID: 60696
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit LP To NG For RUS75e Tankless Water Heater 103000060 The Rinnai 103000060 Conversion Kit is a genuine OEM...

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Rinnai 103000058

Rinnai Conversion Kit NG To LP For C199e Tankless Water Heater

SKU: 103000058
Product ID: 60694
$54.00 - $54.00
$54.00
$54.00 - $54.00
$54.00

Product Details Rinnai Conversion Kit NG To LP For C199e Tankless Water Heater 103000058 The Rinnai 103000058 Conversion Kit is a genuine OEM g...

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Rinnai 103000057

Rinnai Conversion Kit NG To LP For Rinnai C199i Tankless Water Heater

SKU: 103000057
Product ID: 60693
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit NG To LP For Rinnai C199i Tankless Water Heater 103000057 The Rinnai 103000057 Conversion Kit is a genuin...

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Rinnai 105000230

Rinnai Igniter Assembly Spark Ignition For Tankless Water Heater Systems

SKU: 105000230
Product ID: 60814
$39.15 - $39.15
$39.15
$39.15 - $39.15
$39.15

Product Details Rinnai Igniter Assembly Spark Ignition For Tankless Water Heater Systems 105000230 The Rinnai Igniter Assembly Spark Ignition For ...

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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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