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Rinnai 50171954

Rinnai Tile/Shingle Roof Flashing Assembly 8/12 to 16/12 Pitch

SKU: 50171954
Product ID: 60350
$109.00 - $109.00
$109.00
$109.00 - $109.00
$109.00

Product Details Rinnai Tile/Shingle Roof Flashing Assembly 8/12 to 16/12 Pitch 50171954 The Rinnai 50171954 Tile/Shingle Roof Flashing Asse...

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Rinnai 50171961

Rinnai Tile/Shingle Roof Flashing Assembly 6/12 to 12/12 Pitch

SKU: 50171961
Product ID: 60349
$109.00 - $109.00
$109.00
$109.00 - $109.00
$109.00

Product Details Rinnai Tile/Shingle Roof Flashing Assembly 6/12 to 12/12 Pitch 50171961 The Rinnai 50171961 Tile/Shingle Roof Flashing Asse...

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Rinnai 809000114

Rinnai Condensate Neutralizer Refill Media

SKU: 809000114
Product ID: 60348
$73.00 - $73.00
$73.00
$73.00 - $73.00
$73.00

Product Details Rinnai Condensate Neutralizer Refill Media 809000114 The Rinnai 809000114 Refill Media is designed for use with all Rinnai ...

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Rinnai 103000067

Rinnai Commercial Condensate Neutralizer Tank With Media

SKU: 103000067
Product ID: 60347
$801.00 - $801.00
$801.00
$801.00 - $801.00
$801.00

Product Details Rinnai Commercial Condensate Neutralizer Tank With Media 103000067 The Rinnai 103000067 Commercial Neutralizer Tank is desi...

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Rinnai 103000038

Rinnai ScaleCutter Water Conditioning System 3/4" Feed

SKU: 103000038
Product ID: 60346
$456.00 - $456.00
$456.00
$456.00 - $456.00
$456.00

Product Details Rinnai ScaleCutter Water Conditioning System 3/4" Feed 103000038 The Rinnai 103000038 ScaleCutter System Unit 3/4 is desi...

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Rinnai 224078PP

Rinnai 90-Degree Condensing Vent Pipe Elbow For Tankless Water Heaters

SKU: 224078PP
Product ID: 60344
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

Product Details Rinnai 90-Degree Condensing Vent Pipe Elbow For Tankless Water Heaters 224078PP The Rinnai 224078PP 90° Condensing Vent P...

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Rinnai GTK15

Rinnai Grundfos Pump And Timer Kit With Flange For Circulation Logic Systems

SKU: GTK15
Product ID: 60343
$691.00 - $691.00
$691.00
$691.00 - $691.00
$691.00

Product Details Rinnai Grundfos Pump And Timer Kit With Flange For Circulation Logic Systems GTK15 The Rinnai GTK15 Pump Timer Kit is desig...

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Rinnai MC-195T-US

Rinnai Wired Temperature and Re-Circulation Controller

SKU: MC-195T-US
Product ID: 60342
$369.00 - $369.00
$369.00
$369.00 - $369.00
$369.00

Product Details Rinnai Wired Temperature and Re-Circulation Controller MC-195T-US The Rinnai MC-195T-US Wired Controller provides precise c...

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Rinnai 224079PP

Rinnai 19.5" Vent Pipe Extension For RCi Series Tankless Water Heaters

SKU: 224079PP
Product ID: 60341
$56.00 - $56.00
$56.00
$56.00 - $56.00
$56.00

Product Details Rinnai 19.5" Vent Pipe Extension For RCi Series Tankless Water Heaters 224079PP The Rinnai 224079PP Condensing Vent Pipe Ex...

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Rinnai 224087PP

Rinnai 10" Vent Extension For Condensing Tankless Water Heaters and Boilers

SKU: 224087PP
Product ID: 60339
$45.00 - $45.00
$45.00
$45.00 - $45.00
$45.00

Product Details Rinnai 10" Vent Extension for Condensing Tankless Water Heaters and Boilers 224087PP The Rinnai 224087PP Vent Extension is a 10...

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Rinnai REU-MSB-C1

Rinnai Communication Cable For LS Series Condensing Tankless Water Heaters

SKU: REU-MSB-C1
Product ID: 60338
$95.00 - $95.00
$95.00
$95.00 - $95.00
$95.00

Product Details Rinnai Communication Cable For LS Series Condensing Tankless Water Heaters REU-MSB-C1 Rinnai REU-MSB-C1 Communication Cable...

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Rinnai REU-MSB-C2

Rinnai Cable For Multiple MSB-M Cascade Control Units

SKU: REU-MSB-C2
Product ID: 60335
$142.00 - $142.00
$142.00
$142.00 - $142.00
$142.00

Product Details Rinnai Cable for Multiple MSB-M Cascade Control Units REU-MSB-C2 The Rinnai REU-MSB-C2 is a communication cable designed fo...

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Rinnai RBMS100E

Rinnai Outdoor BMS Communication Gateway For Commercial Tankless Systems

SKU: RBMS100E
Product ID: 60789
$3,704.00 - $3,704.00
$3,704.00
$3,704.00 - $3,704.00
$3,704.00

Product Details Rinnai Outdoor BMS Communication Gateway for Commercial Tankless Systems RBMS100E The Rinnai Outdoor BMS Communication Gateway for...

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Rinnai 791040

Rinnai Exhaust Wall Flashing With Wired Cap For Tankless Heater Venting

SKU: 791040
Product ID: 60772
$62.00 - $62.00
$62.00
$62.00 - $62.00
$62.00

Product Details Rinnai Exhaust Wall Flashing With Wired Cap for Tankless Heater Venting 791040 The Rinnai Exhaust Wall Flashing With Wired Cap for...

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Rinnai 209000159

Rinnai Back Spacer Top Assembly For EX38C Direct Vent Wall Furnace

SKU: 209000159
Product ID: 60787
$57.01 - $57.01
$57.01
$57.01 - $57.01
$57.01

Product Details Rinnai Back Spacer Top Assembly for EX38C Direct Vent Wall Furnace 209000159 The Rinnai Back Spacer Top Assembly for EX38C Direct ...

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Rinnai 903000002

Rinnai Infrared Patio Heater Control Panel For SE and SE Plus Systems

SKU: 903000002
Product ID: 60785
$594.00 - $594.00
$594.00
$594.00 - $594.00
$594.00

Product Details Rinnai Infrared Patio Heater Control Panel for SE and SE Plus Systems 903000002 The Rinnai Infrared Patio Heater Control Panel for...

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Rinnai 903000032

Rinnai Infrared Patio Heater Keypad Remote Control For SE and SE Plus

SKU: 903000032
Product ID: 60784
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00

Product Details Rinnai Infrared Patio Heater Keypad Remote Control for SE and SE Plus 903000032 The Rinnai Infrared Patio Heater Keypad Remote Con...

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Rinnai 903000031

Rinnai Wireless Remote Control Handset For Heating And Water Heater Systems

SKU: 903000031
Product ID: 60783
$148.00 - $148.00
$148.00
$148.00 - $148.00
$148.00

Product Details Rinnai Wireless Remote Control Handset for Heating and Water Heater Systems 903000031 The Rinnai Wireless Remote Control Handset f...

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Rinnai 203000002

Rinnai Conversion Kit NG to LP for EX38DT / EX38DTW / EX38CT / EX38CTW

SKU: 203000002
Product ID: 60664
$178.04 - $178.04
$178.04
$178.04 - $178.04
$178.04

Product Details Rinnai Conversion Kit NG to LP for EX38DT / EX38DTW / EX38CT / EX38CTW 203000002 The Rinnai 203000002 NG to LP Conversion Kit ...

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Rinnai 203000001

Rinnai Conversion Kit LP to NG for EX38DT / EX38DTW / EX38CT / EX38CTW

SKU: 203000001
Product ID: 60663
$178.04 - $178.04
$178.04
$178.04 - $178.04
$178.04

Product Details Rinnai Conversion Kit LP to NG for EX38DT / EX38DTW / EX38CT / EX38CTW 203000001 The Rinnai 203000001 LP-to-Natural Gas Convers...

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Rinnai 903000026

Rinnai Infrared Patio Heater Pole Mount Kit For Outdoor Installation

SKU: 903000026
Product ID: 60782
$254.00 - $254.00
$254.00
$254.00 - $254.00
$254.00

Product Details Rinnai Infrared Patio Heater Pole Mount Kit for Outdoor Installation 903000026 The Rinnai Infrared Patio Heater Pole Mount Kit for...

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Rinnai MC-601-W

Rinnai Digital Temperature Controller Wired White For Tankless Water Heater

SKU: MC-601-W
Product ID: 60588
$194.00 - $194.00
$194.00
$194.00 - $194.00
$194.00

Product Details Rinnai Digital Temperature Controller Wired White For Tankless Water Heater MC-601-W The Rinnai MC-601-W is a wired digital temper...

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Rinnai 104000285

Rinnai Freeze Protection Drain Down Kit For SENSEI Tankless Water Heaters

SKU: 104000285
Product ID: 60587
$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00

Product Details Rinnai Freeze Protection Drain Down Kit For SENSEI Tankless Water Heaters 104000285 The Rinnai 104000285 is a specialized freeze p...

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Rinnai MCC-601-W

Rinnai Commercial Digital Temperature Controller MCC-601-W

SKU: MCC-601-W
Product ID: 60586
$260.00 - $260.00
$260.00
$260.00 - $260.00
$260.00

Product Details Rinnai Commercial Digital Temperature Controller MCC-601-W The Rinnai MCC-601-W is a commercial-grade wired digital temperature co...

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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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