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Rinnai 103000035

Rinnai Conversion Kit NG to LP for RU98eP Tankless Water Heater

SKU: 103000035
Product ID: 60678
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit NG to LP for RU98eP Tankless Water Heater 103000035 The Rinnai 103000035 Natural Gas to Propane Conversio...

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Rinnai 103000034

Rinnai Conversion Kit NG to LP for Rinnai Tankless Water Heaters

SKU: 103000034
Product ID: 60677
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit NG to LP for Rinnai Tankless Water Heaters 103000034 The Rinnai 103000034 Natural Gas to Propane Conversio...

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Rinnai CV8IL8USDV

Rinnai Header Kit Inline For 8 Units Tankless Water Heater Direct Vent

SKU: CV8IL8USDV
Product ID: 60501
$0.00 - $0.00
$0.00
$2,800.00
$2,800.00 - $2,800.00
$2,800.00

Product Details Rinnai Header Kit Inline for 8 Units Tankless Water Heater Direct Vent CV8IL8USDV The Rinnai Header Kit Inline for 8 Units Tankle...

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Rinnai CV8BB5USRA

Rinnai Header Kit Back-to-Back For 5 Unit Tankless Water Heater Room Air

SKU: CV8BB5USRA
Product ID: 60488
$0.00 - $0.00
$0.00
$1,200.00
$1,200.00 - $1,200.00
$1,200.00

Product Details Rinnai Header Kit Back-to-Back For 5 Unit Tankless Water Heater Room Air CV8BB5USRA The Rinnai Header Kit Back-to-Back for 5-Unit ...

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Rinnai CV8BB4USRA

Rinnai Header Kit Back-to-Back For 4 Unit Tankless Water Heater Room Air

SKU: CV8BB4USRA
Product ID: 60487
$0.00 - $0.00
$0.00
$960.00
$960.00 - $960.00
$960.00

Product Details Rinnai Header Kit Back-to-Back for 4-Unit Tankless Water Heater Room CV8BB4USRA The Rinnai Header Kit Back-to-Back for 4-Unit Tan...

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Rinnai CV8BB4USDV

Rinnai Header Kit Back-to-Back For 4 Unit Tankless Water Heater Direct Vent

SKU: CV8BB4USDV
Product ID: 60483
$0.00 - $0.00
$0.00
$1,400.00
$1,400.00 - $1,400.00
$1,400.00

Product Details Rinnai Header Kit Back-to-Back For 4 Unit Tankless Water Heater Direct Vent CV8BB4USDV The Rinnai Cvent Header Kit Back-to-Back 4...

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Rinnai CV8BB5USDV

Rinnai Header Kit Back-to-Back For 5 Unit Tankless Water Heater Direct Vent

SKU: CV8BB5USDV
Product ID: 60482
$0.00 - $0.00
$0.00
$1,750.00
$1,750.00 - $1,750.00
$1,750.00

Product Details Rinnai Cvent Header Kit Back-to-Back 5 Units Direct Vent CV8BB5USDV The Rinnai Cvent Header Kit Back-to-Back 5 Units Direct Vent i...

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Rinnai Extension 6-39 Compatible With Tankless Water Heaters

SKU: 790089
Product ID: 60425
$75.00 - $75.00
$75.00
$75.00 - $75.00
$75.00

Product Details Rinnai Extension 6-39 The Rinnai Extension 6-39 is a versatile and durable solution designed to extend the reach of your Rinnai ta...

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Rinnai 103000111

Rinnai Freestanding Tankless Water Heater Rack Kit for Two Indoor Units

SKU: 103000111
Product ID: 60793
$1,993.00 - $1,993.00
$1,993.00
$1,993.00 - $1,993.00
$1,993.00

Product Details Rinnai Freestanding Tankless Water Heater Rack Kit for Two Indoor Units 103000111 The Rinnai Freestanding Tankless Water Heater Ra...

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Rinnai 104000309

Rinnai Gas Conversion Kit Propane to Natural Gas for RE and REP Models

SKU: 104000309
Product ID: 60792
$109.00 - $109.00
$109.00
$109.00 - $109.00
$109.00

Product Details Rinnai Gas Conversion Kit Propane to Natural Gas for RE and REP Models 104000309 The Rinnai Gas Conversion Kit Propane to Natural ...

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Rinnai 103000033

Rinnai Conversion Kit NG to LP for RU98i Tankless Water Heater

SKU: 103000033
Product ID: 60676
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit NG to LP for RU98i Tankless Water Heater 103000033 The Rinnai 103000033 NG to LP Gas Conversion Kit is a ...

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Rinnai 103000032

Rinnai Conversion Kit NG to LP Gas for Tankless Water Heaters

SKU: 103000032
Product ID: 60675
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit LP to NG Gas for Tankless Water Heaters 103000032 The Rinnai 103000032 NG to LP Gas Conversion Kit is a g...

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Rinnai 103000031

Rinnai Conversion Kit LP to NG Gas for RU98eN Tankless Water Heater

SKU: 103000031
Product ID: 60674
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit LP to NG Gas for RU98eN Tankless Water Heater 103000031 The Rinnai 103000031 LP to NG Gas Conversion Kit ...

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Rinnai 103000030

Rinnai Conversion Kit LP to NG Gas for RU80eN Tankless Water Heater

SKU: 103000030
Product ID: 60673
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit LP to NG Gas for RU80eN Tankless Water Heater 103000030 The Rinnai 103000030 LP to NG Gas Conversion Kit...

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Rinnai 109000203

Rinnai Bracket Heater Attachment for Tankless & Water Heater Units

SKU: 109000203
Product ID: 60670
$120.00 - $120.00
$120.00
$120.00 - $120.00
$120.00

Product Details Rinnai Bracket Heater Attachment for Tankless & Water Heater Units 109000203 The Rinnai 109000203 Heater Attachment Bracket...

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Rinnai 102000022

Rinnai 2/4 Horizontal Flashing Panel Vent Accessory for Tankless Heaters

SKU: 102000022
Product ID: 60669
$31.00 - $31.00
$31.00
$31.00 - $31.00
$31.00

Product Details Rinnai 2/4 Horizontal Flashing Panel Vent Accessory for Tankless Heaters 102000022 The Rinnai 102000022 2/4 Horizontal Flashin...

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Rinnai 103000059

Rinnai Conversion Kit LP to NG Gas for RUCS75i Tankless Water Heater

SKU: 103000059
Product ID: 60695
$83.00 - $83.00
$83.00
$83.00 - $83.00
$83.00

Product Details Rinnai Conversion Kit LP to NG Gas for RUCS75i Tankless Water Heater 103000059 Upgrade your Rinnai RUCS75i tankless water...

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Rinnai RGBRE

Rinnai Recess Box for Non Condensing Tankless Water Heater Installation

SKU: RGBRE
Product ID: 60801
$494.00 - $494.00
$494.00
$494.00 - $494.00
$494.00

Product Details Rinnai Recess Box for Non Condensing Tankless Water Heater Installation RGBRE The Rinnai Recess Box for Non Condensing Tankless Wa...

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Rinnai Recirculation Push Button Control for Tankless Water Heater

SKU: RPB200
Product ID: 60816
$54.00 - $54.00
$54.00
$54.00 - $54.00
$54.00

Product Details Rinnai Recirculation Push Button Control for Tankless Water Heater RPB200 The Rinnai Recirculation Push Button Control for Tankles...

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Rinnai RWM200

Rinnai Wireless Module for Tankless Water Heater Remote Control

SKU: RWM200
Product ID: 60818
$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00

Product Details Rinnai Wireless Module for Tankless Water Heater Remote Control RWM200 The Rinnai Wireless Module for Tankless Water Heater Remote...

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Rinnai RGB-CTWH-2

Rinnai Condensing Tankless Recess Box For KB Series Ultra Units

SKU: RGB-CTWH-2
Product ID: 60354
$725.00 - $725.00
$725.00
$725.00 - $725.00
$725.00

Product Details Rinnai Condensing Tankless Recess Box For KB Series Ultra Units RGB-CTWH-2 The Rinnai RGB-CTWH-2 Condensing Tankless Reces...

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Rinnai 103000068

Rinnai 40 lbs Condensate Neutralizer Refill Media

SKU: 103000068
Product ID: 60353
$180.00 - $180.00
$180.00
$180.00 - $180.00
$180.00

Product Details Rinnai 40 lbs Condensate Neutralizer Refill Media 103000068 The Rinnai 103000068 Refill Media is a 40-pound replacement for Rinn...

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Rinnai 103000039

Rinnai ScaleCutter Water Conditioning System Refill Cartridge 3/4"

SKU: 103000039
Product ID: 60352
$240.00 - $240.00
$240.00
$240.00 - $240.00
$240.00

Product Details Rinnai ScaleCutter Water Conditioning System Refill Cartridge 3/4" 103000039 The Rinnai 103000039 ScaleCutter Refill Cartri...

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Rinnai 804000074

Rinnai Condensate Neutralizer Kit For All Models

SKU: 804000074
Product ID: 60351
$213.00 - $213.00
$213.00
$213.00 - $213.00
$213.00

Product Details Rinnai Condensate Neutralizer Kit For All Models 804000074 The Rinnai 804000074 Condensate Neutralizer Kit is designe...

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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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