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Rinnai RX199iN

Rinnai 199,000 BTU Water Heater Tankless Condensing Natural Or Propane Gas

SKU: RX199iN
Product ID: 110770
$1,703.10 - $1,703.10
$1,703.10
$1,703.10 - $1,703.10
$1,703.10

Product Details Rinnai 199,000 BTU Water Heater Tankless Condensing Natural Or Propane Gas RX199iN The SENSEI™ RX199iN condensing tankless water h...

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Rinnai MIVK-T-LW

Rinnai Matsui 3/4 Inch FNPT Tankless Isolation Valve Kit Lead Free

SKU: MIVK-T-LW
Product ID: 110699
$125.00 - $125.00
$125.00
$125.00 - $125.00
$125.00

Product Details Rinnai Matsui 3/4 Inch FNPT Tankless Isolation Valve Kit Lead Free The Rinnai MIVK-T-LW is a lead free isolation valve kit for Rin...

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Rinnai 60845

Rinnai Wall Offset Bracket for Tankless Water Heater Installation

SKU: 109001376
Product ID: 110386
$96.00 - $96.00
$96.00
$96.00 - $96.00
$96.00

Product Details Rinnai Wall Offset Bracket for Tankless Water Heater Installation 109001376 The Rinnai Wall Offset Bracket for Tankless Water Heat...

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Rinnai RXP199iN

Rinnai 199000 BTU Water Heater Tankless Condensing NG/LP Indoor/Outdoor

SKU: RXP199iN
Product ID: 110774
$2,067.80 - $2,067.80
$2,067.80
$2,067.80 - $2,067.80
$2,067.80

Product Details Rinnai 199000 BTU Water Heater Tankless Condensing NG/LP Indoor/Outdoor RXP199iN The SENSEI™ RXP199iN condensing tankless water he...

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Rinnai 109001393

Rinnai Latch Panel Hardware For Tankless Water Heater Panels

SKU: 109001393
Product ID: 110388
$22.00 - $22.00
$22.00
$22.00 - $22.00
$22.00

Product Details Rinnai Latch Panel Hardware For Tankless Water Heater Panels 109001393 The Rinnai Latch Panel Hardware For Tankless Water Heater...

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Rinnai BBF9-630X01

Rinnai Surge Protector V2532FFU OEM Replacement For Tankless Water Heaters

SKU: BBF9-630X01
Product ID: 110591
$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99

Product Details Rinnai Surge Protector V2532FFU OEM Replacement For Tankless Water Heaters BBF9-630X01 The Rinnai Surge Protector V2532FFU OEM R...

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Rinnai 104000216

Rinnai Gas Conversion Kit LP To NG For RL94e VC Tankless Water Heater

SKU: 104000216
Product ID: 110311
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit LP To NG For RL94e VC Tankless Water Heater 104000216 Convert your Rinnai RL94e (VC) tankless water h...

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Rinnai 60798

Rinnai Tankless Water Heater Pipe Cover for RE and REP Models

SKU: PCD09-SHS
Product ID: 110706
$226.00 - $226.00
$226.00
$226.00 - $226.00
$226.00

Product Details Rinnai Tankless Water Heater Pipe Cover for RE and REP Models PCD09-SHS The Rinnai Tankless Water Heater Pipe Cover for RE and REP...

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Rinnai 204000040

Rinnai Conversion Kit Natural Gas to Propane for EX22 Series Wall Furnaces

SKU: 204000040
Product ID: 110421
$31.28 - $31.28
$31.28
$31.28 - $31.28
$31.28

Product Details Rinnai Conversion Kit Natural Gas to Propane for EX22 Series Wall Furnaces 204000040 The Rinnai 204000040 Natural Gas to Propan...

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Rinnai RX160iN

Rinnai 160000 BTU Water Heater Tankless NG/LP Condensing Indoor/Outdoor

SKU: RX160iN
Product ID: 110768
$1,442.70 - $1,442.70
$1,442.70
$1,442.70 - $1,442.70
$1,442.70

Product Details Rinnai 160000 BTU Water Heater Tankless NG/LP Condensing Indoor/Outdoor RX160iN The SENSEI® RX160iN condensing tankless water heat...

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Rinnai CX199iN

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

SKU: CX199iN
Product ID: 110636
$1,752.80 - $1,752.80
$1,752.80
$1,752.80 - $1,752.80
$1,752.80

Product Details Rinnai 199K BTU Water Heater Tankless Natural/Propane Gas Condensing Indoor CX199iN The Rinnai SENSEI™ CX Series is built for the ...

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Rinnai 224359

Rinnai Roof Discharge Termination Kit 2/4" Condensing Concentric Vent 20"

SKU: 224359
Product ID: 110462
$95.00 - $95.00
$95.00
$95.00 - $95.00
$95.00

Product Details Rinnai Roof Discharge Termination Kit 2/4" Condensing Concentric Vent 20" 224359 The Rinnai 224359 is a 2/4-inch condensin...

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Rinnai 103000120

Rinnai EHPWH Ducting Kit For Electric Heat Pump Water Heaters

SKU: 103000120
Product ID: 110293
$686.00 - $686.00
$686.00
$686.00 - $686.00
$686.00

Product Details Rinnai EHPWH Ducting Kit For Electric Heat Pump Water Heaters 103000120 The Rinnai EHPWH Ducting Kit For Electric Heat Pump Water ...

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Rinnai 104000244

Rinnai Fan Motor Assembly Kit For RL94e RL75e VC Tankless Water Heaters

SKU: 104000244
Product ID: 110321
$171.02 - $171.02
$171.02
$171.02 - $171.02
$171.02

Product Details Rinnai Fan Motor Assembly Kit For RL94e RL75e VC Tankless Water Heaters 104000244 The Rinnai Fan Motor Assembly Kit For RL94e RL...

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Rinnai 109001388

Rinnai Residential Front Cover Panel For RL75i RL94i V65i V75i Tankless

SKU: 109001388
Product ID: 110387
$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00

Product Details Rinnai Residential Front Cover Panel For RL75i RL94i V65i V75i Tankless 109001388 The Rinnai Residential Front Cover Panel For R...

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Rinnai 804000023

Rinnai Liquid Propane To Natural Gas Conversion Kit For E75C/E75CR Boilers

SKU: 804000023
Product ID: 110553
$85.00 - $85.00
$85.00
$85.00 - $85.00
$85.00

Product Details Rinnai Liquid Propane To Natural Gas Conversion Kit For E75C/E75CR Boilers 804000023 The Rinnai 804000023 LP to NG Co...

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Rinnai FOT-158

Rinnai Elbow For Vent Extension Kits

SKU: FOT-158
Product ID: 110674
$111.30 - $111.30
$111.30
$111.30 - $111.30
$111.30

Product Details Rinnai Elbow For Vent Extension Kits FOT-158 The Rinnai FOT-158 Elbow is a precision-engineered component designed for us...

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Rinnai FOT-220

Rinnai 21" To 40" Vent Extension Set For Wall Furnaces EX17C/EX22

SKU: FOT-220
Product ID: 110677
$385.84 - $385.84
$385.84
$385.84 - $385.84
$385.84

Product Details Rinnai 21" To 40" Vent Extension Set For Wall Furnaces EX17C/EX22 FOT-220 The Rinnai FOT-220 Vent Extension Kit is engineer...

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Rinnai 108000104

Rinnai Vent Screen Set For Tankless Water Heater Intake And Exhaust Pipes

SKU: 108000104
Product ID: 110354
$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00

Product Details Rinnai Vent Screen Set For Tankless Water Heater Intake And Exhaust Pipes 108000104 The Rinnai Vent Screen Set For Tankless Water...

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Rinnai 103000074

Rinnai Gas Conversion Kit NG To LP For V94E Tankless Water Heater

SKU: 103000074
Product ID: 110282
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Gas Conversion Kit NG To LP For V94E Tankless Water Heater 103000074 The Rinnai 103000074 Gas Conversion Kit is a genuin...

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Rinnai 103000063

Rinnai Conversion Kit NG To LP For RUCS75i Tankless Water Heater

SKU: 103000063
Product ID: 110271
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit NG To LP For RUCS75i Tankless Water Heater 103000063 Easily convert your Rinnai RUCS75i tankless water heat...

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Rinnai 104000330

Rinnai Gas Conversion Kit For RX RXP CX CXP Series Tankless Water Heaters

SKU: 104000330
Product ID: 110328
$46.00 - $46.00
$46.00
$46.00 - $46.00
$46.00

Product Details Rinnai Gas Conversion Kit For RX RXP CX CXP Series Tankless Water Heaters 104000330 The Rinnai Gas Conversion Kit For RX RXP CX ...

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Rinnai 187595NPP

Rinnai 2" x 2/4 Condensing Twin Pipe Adaptor

SKU: 187595NPP
Product ID: 110402
$0.00 - $0.00
$0.00
$105.00
$105.00 - $105.00
$105.00

Product Details Rinnai 2" x 2/4 Condensing Twin Pipe Adaptor 187595NPP The Rinnai 2in x 2/4 Condensing Twin Pipe Adaptor is a high-quality, relia...

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Rinnai 103000057

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

SKU: 103000057
Product ID: 110265
$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 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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