Skip to content
About Us FAQs Contact Us Price Match Guarantee Request A Quote My Account

Rinnai

Filters

Rinnai 103000029

Rinnai Conversion Kit LP to NG Gas for RU98i Tankless Water Heater

SKU: 103000029
Product ID: 110241
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Conversion Kit LP to NG Gas for RU98i Tankless Water Heater 103000029 The Rinnai 103000029 LP to NG Gas Conversion Kit i...

View full details
Rinnai 223182

Rinnai 21" Horizontal Non-Condensing Vent Termination Kit w/ Elbow

SKU: 223182
Product ID: 110439
$169.00 - $169.00
$169.00
$169.00 - $169.00
$169.00

Product Details Rinnai 21" Horizontal Non-Condensing Vent Termination Kit W/ Elbow 223182 This venting kit is engineered specifically for Rinnai...

View full details
Rinnai 109000375

Rinnai RGB-20U Retrofit Door Replacement Kit V53De

SKU: 109000824
Product ID: 110376
$162.16 - $162.16
$162.16
$162.16 - $162.16
$162.16

Product Details Rinnai RGB-20U Retrofit Door Replacement Kit V53De 109000824 The Rinnai RGB-20U Retrofit Door Replacement Kit V53De 109000824 is a...

View full details
Rinnai 107000380

Rinnai Spring Check Valve 3/4" for Tankless Water Heaters

SKU: 107000380
Product ID: 110344
$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99

Product Details Rinnai 3/4" Spring Check Valve for Tankless Water Heaters 107000380 The Rinnai 3/4" Spring Check Valve is a reliable one-way flo...

View full details
Rinnai 229319

Rinnai 2"/4" x 19.5" Polypropylene Concentric Vent Pipe Extension

SKU: 229319
Product ID: 110480
$46.00 - $46.00
$46.00
$46.00 - $46.00
$46.00

Product Details Rinnai 2"/4" x 19.5" Polypropylene Concentric Vent Pipe Extension 229319 The Rinnai 2"/4" x 19.5" Polypropylene Concentric Vent Pi...

View full details
Rinnai 229320

Rinnai Polypropylene Concentric Vent Pipe Extension 2 x 4 x 39 Inches

SKU: 229320
Product ID: 110481
$46.00 - $46.00
$46.00
$46.00 - $46.00
$46.00

Product Details Rinnai Polypropylene Concentric Vent Pipe Extension 2 x 4 x 39 Inches 229320 The Rinnai 2 inch x 4 inch x 39 inch Polypropylene Co...

View full details
Rinnai REHP50

Rinnai 50 Gallon Electric Heat Pump Water Heater Residential 1PH 4.5KW 240V

SKU: REHP50
Product ID: 110733
$1,799.00 - $1,799.00
$1,799.00
$1,799.00 - $1,799.00
$1,799.00

Product Details Rinnai 50 Gallon Electric Heat Pump Water Heater Residential 1PH 4.5KW 240V REHP50 The Rinnai Electric Heat Pump Water Heater (REH...

View full details
Rinnai RE160EN

Rinnai 160,000 BTU Water Heater Tankless Natural Gas Non-Condensing Outdoor

SKU: RE160EN
Product ID: 110720
$992.60 - $992.60
$992.60
$992.60 - $992.60
$992.60

Product Details Rinnai 160,000 BTU Water Heater Tankless Natural Gas Non-Condensing Outdoor RE160EN The Rinnai RE160eN delivers the perfect combin...

View full details
Rinnai RE140EP

Rinnai 140,000 BTU Water Heater Tankless Propane Gas Non-Condensing Outdoor

SKU: RE140EP
Product ID: 110717
$884.10 - $884.10
$884.10
$884.10 - $884.10
$884.10

Product Details Rinnai 140,000 BTU Water Heater Tankless Propane Gas Non-Condensing Outdoor RE140EP The Rinnai RE140eP combines high efficiency, c...

View full details
Rinnai REHP65

Rinnai 15,000 BTU Electric Heat Pump Water Heater 65 Gallons 208/240V

SKU: REHP65
Product ID: 110734
$2,049.00 - $2,049.00
$2,049.00
$2,049.00 - $2,049.00
$2,049.00

Product Details Rinnai 15,000 BTU Electric Heat Pump Water Heater 65 Gallon 208/240V REHP65 The Rinnai REHP65 is a premier water heating solution ...

View full details
Rinnai RXP160iN

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

SKU: RXP160iN
Product ID: 110773
$1,685.60 - $1,685.60
$1,685.60
$1,685.60 - $1,685.60
$1,685.60

Product Details Rinnai 160000 BTU Water Heater Tankless Condensing NG/LP Indoor/Outdoor RXP160iN The SENSEI™ RXP160iN condensing tankless water he...

View full details
Rinnai RX180iN

Rinnai 180000 BTU Water Heater Tankless NG/LP Condensing Indoor/Outdoor

SKU: RX180iN
Product ID: 110769
$1,566.60 - $1,566.60
$1,566.60
$1,566.60 - $1,566.60
$1,566.60

Product Details Rinnai 180000 BTU Water Heater Tankless NG/LP Condensing Indoor/Outdoor RX180iN The SENSEI® RX180iN condensing tankless water heat...

View full details
Rinnai EX38DTWP

Rinnai 36,500 BTU Propane Direct Vent Wall Furnace White 117W 263 CFM 120V

SKU: EX38DTWP
Product ID: 110651
$2,935.80 - $2,935.80
$2,935.80
$2,935.80 - $2,935.80
$2,935.80

Product Details Rinnai 36,500 BTU Propane Direct Vent Wall Furnace White 117W 263 CFM 120V EX38DTWP Rinnai’s fully modulating direct-vent wall ...

View full details
Rinnai V53DEP

Rinnai 120,000 BTU Propane Tankless Heater Outdoor High Efficiency 120V

SKU: V53DEP
Product ID: 110807
$741.65 - $741.65
$741.65
$741.65 - $741.65
$741.65

Product Details Rinnai 120,000 BTU Propane Tankless Heater Outdoor High Efficiency 120V V53DeP The Rinnai Value Series V53De Tankless Water...

View full details
Rinnai 803000040

Rinnai Gas Conversion Kit Replacement For I‑Series Condensing Boilers

SKU: 803000040
Product ID: 110547
$71.00 - $71.00
$71.00
$71.00 - $71.00
$71.00

Product Details Rinnai Gas Conversion Kit Replacement For I‑Series Condensing Boilers 803000040 Convert your Rinnai I‑Series condensing boiler ...

View full details
Rinnai EX38DTN

Rinnai 38,400 BTU Natural Gas Direct Vent Wall Furnace Beige 263 CFM 120V

SKU: EX38DTN
Product ID: 110648
$2,935.80 - $2,935.80
$2,935.80
$2,935.80 - $2,935.80
$2,935.80

Product Details Rinnai 38,400 BTU Natural Gas Direct Vent Wall Furnace Beige 263 CFM 120V EX38DTN This direct vent wall furnace provides consist...

View full details
Rinnai EX22DTN

Rinnai 21,500 BTU Natural Gas Direct Vent Wall Furnace Beige 162.7 CFM 120V

SKU: EX22DTN
Product ID: 110644
$2,465.40 - $2,465.40
$2,465.40
$2,465.40 - $2,465.40
$2,465.40

Product Details Rinnai 21,500 BTU Natural Gas Direct Vent Wall Furnace Beige 162.7 CFM 120V EX22DTN This direct vent wall furnace provides cons...

View full details
Rinnai EX22DTP

Rinnai 20,700 BTU Propane Direct Vent Wall Furnace Beige 162.7 CFM 120V

SKU: EX22DTP
Product ID: 110645
$2,465.40 - $2,465.40
$2,465.40
$2,465.40 - $2,465.40
$2,465.40

Product Details Rinnai 20,700 BTU Propane Direct Vent Wall Furnace Beige 162.7 CFM 120V EX22DTP This direct vent wall furnace provides depe...

View full details
Rinnai EI-189

Rinnai Sparker Ignitor / Black Box Replacement for Water Heaters

SKU: EI-189
Product ID: 110639
$66.49 - $66.49
$66.49
$66.49 - $66.49
$66.49

Product Details Rinnai Sparker Ignitor / Black Box Replacement for Water Heaters EI‑189 The Rinnai EI‑189 Sparker Ignitor, also known as the Bl...

View full details
Rinnai 103000121

Rinnai Laser Vent Guide Kit Installation Tool For Tankless Water Heaters

SKU: 103000121
Product ID: 110294
$125.00 - $125.00
$125.00
$125.00 - $125.00
$125.00

Product Details Rinnai Laser Vent Guide Kit Installation Tool For Tankless Water Heaters 103000121 The Rinnai Laser Vent Guide Kit Installation ...

View full details
Rinnai 103000070

Rinnai Gas Conversion Kit NG To LP For V94I Tankless Water Heaters

SKU: 103000070
Product ID: 110278
$65.00 - $65.00
$65.00
$65.00 - $65.00
$65.00

Product Details Rinnai Gas Conversion Kit NG To LP For V94I Tankless Water Heaters 103000070 Convert your Rinnai V94I tankless water heater fro...

View full details
Rinnai 104000226

Rinnai Gas Conversion Kit NG To LP For V65E VC Tankless Water Heaters

SKU: 104000226
Product ID: 110319
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit NG To LP For V65E VC Tankless Water Heaters 104000226 Convert your Rinnai V65E (VC) tankless water he...

View full details
Rinnai 104000225

Rinnai Gas Conversion Kit NG To LP For V65i VC Tankless Water Heaters

SKU: 104000225
Product ID: 110318
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit NG To LP For V65i VC Tankless Water Heaters 104000225 Convert your Rinnai V65i (VC) tankless water h...

View full details
Rinnai 104000222

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

SKU: 104000222
Product ID: 110315
$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

Product Details Rinnai Gas Conversion Kit NG To LP For RL94e‑VC Tankless Water Heaters 104000222 Convert your Rinnai RL94e‑VC tankless water h...

View full details

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.

Need a Quote?
Connect with HVAC Store Support