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Rinnai 803000015

Rinnai E50C Flow Switch Conversion Kit For E50 Combi Boilers

SKU: 803000015
Product ID: 60417
$176.00 - $176.00
$176.00
$176.00 - $176.00
$176.00

Product Details Rinnai E50C Flow Switch Conversion Kit For E50 Combi Boilers 803000015 The E50C Flow Switch Conversion Kit is an essential upgrad...

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Rinnai 803000029

Rinnai Conversion Kit Liquid Propane to Natural Gas For M090C Boilers

SKU: 803000029
Product ID: 60569
$111.00 - $111.00
$111.00
$111.00 - $111.00
$111.00

Product Details Rinnai Conversion Kit Liquid Propane to Natural Gas For M090C Boilers 803000029 The Rinnai 803000029 is a genuine OEM gas conversi...

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Rinnai 803000025

Rinnai Conversion Kit Liquid Propane to Natural Gas For M060C Boilers

SKU: 803000025
Product ID: 60568
$111.00 - $111.00
$111.00
$111.00 - $111.00
$111.00

Product Details Rinnai Conversion Kit Liquid Propane to Natural Gas For M060C Boilers 803000025 The Rinnai 803000025 is a genuine OEM gas conversi...

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Rinnai 803000026

Rinnai Boiler Conversion Kit Natural Gas To Liquid Propane For M060S

SKU: 803000026
Product ID: 60566
$111.00 - $111.00
$111.00
$111.00 - $111.00
$111.00

Product Details Rinnai Boiler Conversion Kit Natural Gas To Liquid Propane For M060S 803000026 The Rinnai 803000026 is a genuine OEM gas conversio...

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Rinnai 607000018

Rinnai 3/4 Inches NPT 24 Volt Normally Closed Solenoid Valve

SKU: 607000018
Product ID: 60771
$131.00 - $131.00
$131.00
$131.00 - $131.00
$131.00

Product Details Rinnai 3/4 inch NPT 24 Volt Normally Closed Solenoid Valve 607000018 The Rinnai 3/4 inch NPT 24 Volt Normally Closed Solenoid Valv...

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Rinnai AHRACK-1

Rinnai Air Handler Rack Assembly Mounting Kit For Hydronic Systems

SKU: AHRACK-1
Product ID: 60770
$360.00 - $360.00
$360.00
$360.00 - $360.00
$360.00

Product Details Rinnai Air Handler Rack Assembly Mounting Kit for Hydronic Systems AHRACK-1  The Rinnai Air Handler Rack Assembly Mounting Kit for...

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Rinnai 109000604

Rinnai Residential Front Cover Panel Assembly

SKU: 109000604
Product ID: 60769
$133.00 - $133.00
$133.00
$133.00 - $133.00
$133.00

Product Details Rinnai Residential Front Cover Panel Assembly 109000604 The Rinnai Residential Front Cover Panel Assembly 109000604 is a genuine O...

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Rinnai 790122

Rinnai 3 Inch Polypropylene Common Vent Extension 39 Inch Length

SKU: 790122
Product ID: 60652
$38.00 - $38.00
$38.00
$38.00 - $38.00
$38.00

Product Details Rinnai 3 Inch Polypropylene Common Vent Extension 39 Inch Length 790122 Extend your Rinnai tankless water heater venting syste...

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Rinnai 803000024

Rinnai Boiler Conversion Kit Natural Gas To Liquid Propane For M060C

SKU: 803000024
Product ID: 60565
$99.75 - $99.75
$99.75
$99.75 - $99.75
$99.75

Product Details Rinnai Boiler Conversion Kit Natural Gas To Liquid Propane For M060C 803000024 The Rinnai 803000024 is a genuine gas conversion ki...

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Rinnai 803000028

Rinnai Boiler Conversion Kit Natural Gas To Liquid Propane For M090C

SKU: 803000028
Product ID: 60564
$111.00 - $111.00
$111.00
$111.00 - $111.00
$111.00

Product Details Rinnai Boiler Conversion Kit Natural Gas To Liquid Propane For M090C The Rinnai 803000028 is a specialized conversion kit designed...

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Rinnai 103000055

Rinnai Gas Conversion Kit LP to NG for C199i Tankless Water Heater

SKU: 103000055
Product ID: 60650
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit LP to NG for C199i Tankless Water Heater 103000055 The Rinnai 103000055 Gas Conversion Kit is a genuin...

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Rinnai 199K BTU Natural Gas Demand Duo R-Series Hybrid 80 Gallon 120V

SKU: CHS19980RXiN
Product ID: 60768
$17,250.00 - $17,250.00
$17,250.00
$17,250.00 - $17,250.00
$17,250.00

Product Details Rinnai 199K BTU Natural Gas Demand Duo R-Series Hybrid 80 Gallon 120V CHS19980RXiN The Rinnai Demand Duo R-Series CHS19980RXiN is...

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Rinnai R-BMS-CABLE-3M

Rinnai BMS Communication Cable 3M

SKU: R-BMS-CABLE-3M
Product ID: 60767
$133.00 - $133.00
$133.00
$133.00 - $133.00
$133.00

Product Details Rinnai BMS Communication Cable 3m R-BMS-CABLE-3M The Rinnai BMS Communication Cable 3m R-BMS-CABLE-3M is designed to connect compa...

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Rinnai R-bms-101

Rinnai BMS Touch Screen User Interface Controller

SKU: R-BMS-101
Product ID: 60765
$2,118.00 - $2,118.00
$2,118.00
$2,118.00 - $2,118.00
$2,118.00

Product Details Rinnai BMS Touch Screen User Interface Controller R-BMS-101 The Rinnai BMS Touch Screen User Interface Controller R-BMS-101 provid...

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Rinnai 204000037

Rinnai Gas Conversion Kit Natural Gas to Liquid Propane

SKU: 204000037
Product ID: 60649
$29.00 - $29.00
$29.00
$29.00 - $29.00
$29.00

Product Details Rinnai Gas Conversion Kit Natural Gas to Liquid Propane 204000037 Convert your Rinnai furnace safely and efficiently with the Ri...

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Rinnai R-BMS-100

Rinnai BMS Gateway Commercial Tankless Water Heater Controller

SKU: R-BMS-100
Product ID: 60764
$2,513.00 - $2,513.00
$2,513.00
$2,513.00 - $2,513.00
$2,513.00

Product Details Rinnai BMS Gateway Commercial Tankless Water Heater Controller R-BMS-100 The Rinnai BMS Gateway Commercial Tankless Water Heater C...

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Rinnai ST119

Rinnai Commercial Storage Tank 119 Gallon High-Capacity Hot Water Tank

SKU: ST119
Product ID: 60648
$4,921.00 - $4,921.00
$4,921.00
$4,921.00 - $4,921.00
$4,921.00

Product Details Rinnai Commercial Storage Tank 119 Gallon High-Capacity Hot Water Tank ST119 The Rinnai ST119 is a large 119-gallon gray commerc...

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Rinnai 109000835

Rinnai Flange Kit for UPS 40 Pump Replacement Mounting/Connection Part

SKU: 109000835
Product ID: 60647
$136.00 - $136.00
$136.00
$136.00 - $136.00
$136.00

Product Details Rinnai Flange Kit for UPS 40 Pump Replacement Mounting/Connection Part 109000835 Ensure a secure and proper installation of your R...

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Rinnai 105000250

Rinnai External Pump Harness

SKU: 105000250
Product ID: 60762
$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00

Product Details Rinnai External Pump Harness 105000250 The Rinnai External Pump Harness 105000250 is a genuine OEM replacement component designed ...

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Rinnai Flange Kit for UPS 26 Pump Replacement Mounting/Connection Part

SKU: 109000834
Product ID: 60646
$136.00 - $136.00
$136.00
$136.00 - $136.00
$136.00

Product Details Rinnai Flange Kit for UPS 26 Pump Replacement Mounting/Connection Part 109000834 Ensure a secure and proper installation of your...

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Rinnai 107000443

Rinnai Immersion Well 3/4" NPT x 3" Temperature Sensor Pocket Replacement

SKU: 107000443
Product ID: 60645
$189.00 - $189.00
$189.00
$189.00 - $189.00
$189.00

Product Details Rinnai Immersion Well 3/4" NPT x 3" Temperature Sensor Pocket Replacement 107000443 Monitor your Rinnai water heater’s performan...

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Rinnai 107000442

Rinnai Check Valve 1" Brass Spring Replacement for Tankless Water Heaters

SKU: 107000442
Product ID: 60644
$69.00 - $69.00
$69.00
$69.00 - $69.00
$69.00

Product Details Rinnai Check Valve 1" Brass Spring Replacement for Tankless Water Heaters 107000442 Ensure proper flow and protect your Rinnai w...

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Rinnai 222716

Rinnai Vent Plastic Pipe Clamp 2" 60mm 222716

SKU: 222716
Product ID: 60555
$36.00 - $36.00
$36.00
$36.00 - $36.00
$36.00

Product Details Rinnai Vent Plastic Pipe Clamp 2" 60mm 222716 The Rinnai 222716 is a 2-inch (60mm) plastic pipe clamp designed to secure vent pipi...

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Rinnai 184229

Rinnai Wall Discharge Termination Kit 3" x 5" Concentric Standard Vent

SKU: 184229
Product ID: 60553
$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00

Product Details Rinnai Wall Discharge Termination Kit 3" x 5" Concentric Standard Vent 184229 The Rinnai 184229 is a standard concentric wall disc...

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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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