Rinnai
Rinnai tankless water heaters deliver endless hot water with compact, efficient designs. Build the right system with indoor or outdoor models in natural gas or propane, condensing or non-condensing, recirculation options, clean venting, and the install parts to finish the job.
Shop by category
- Condensing (SENSEI series): high-efficiency indoor/outdoor units; concentric or 2-pipe venting
- Non-condensing: value models for simple replacements and mild climates
- Recirculation: built-in pump models, recirc-ready units, crossover/bypass kits, timers and controls
- Venting & covers: concentric and twin-pipe kits, terminations, pipe covers, wall thimbles
- Controls: wall remotes and optional Wi-Fi/app modules
- Install & service parts: isolation/flush valve kits, filters, condensate neutralizers, NG/LP conversion kits, repair parts
Quick choosing guide
- Size by demand: total peak fixtures and calculate GPM at your winter temperature rise; select a unit that meets that flow on the spec curve.
- Pick location & fuel: indoor with a vent route or outdoor where climate allows; choose natural gas or propane and confirm gas line capacity.
- Efficiency: choose condensing for higher efficiency (plan a condensate drain/neutralizer) or non-condensing for straightforward replacements.
- Faster hot water: pick a built-in recirc model or add a recirc kit to a recirc-ready unit; set schedules to reduce wait time.
- Venting: select concentric or 2-pipe per the manual; follow clearances and use approved materials and terminations.
- Complete the kit: install isolation/flush valves, pipe cover if desired, controller/Wi-Fi, sediment filter, and proper electrical/gas shutoff.
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Rinnai - RWMKT01 - Control-R Wireless Demand Recirculation Kit (Push Button)
RinnaiOriginal price $ 439.00 - Original price $ 439.00Original price$ 439.00$ 439.00 - $ 439.00Current price $ 439.00Rinnai Control-R Wi-Fi Module and mobile app no longer are compatible w/ the RUCS/RUS Tankless Water Heaters Control Your Rinnai Tankless Water Hea...
View full detailsOriginal price $ 439.00 - Original price $ 439.00Original price$ 439.00$ 439.00 - $ 439.00Current price $ 439.00 -
Rinnai - RWMMS01 - Control-R Motion Sensor
RinnaiOriginal price $ 312.00 - Original price $ 312.00Original price$ 312.00$ 312.00 - $ 312.00Current price $ 312.00The Rinnai Control-R motion sensor is mounted near a main point of use such as a kitchen faucet or bathroom sink, and operates the recirculation sy...
View full detailsOriginal price $ 312.00 - Original price $ 312.00Original price$ 312.00$ 312.00 - $ 312.00Current price $ 312.00 -
Rinnai FC510N - Vent-Free Natural Gas Convector
RinnaiOriginal price $ 942.20 - Original price $ 942.20Original price$ 942.20$ 942.20 - $ 942.20Current price $ 942.20Rinnai FC510N Vent-Free Fan Convector – Natural Gas The Rinnai FC510N delivers efficient, quiet heat in a compact vent-free design built for small...
View full detailsOriginal price $ 942.20 - Original price $ 942.20Original price$ 942.20$ 942.20 - $ 942.20Current price $ 942.20 -
Rinnai - FC510P - Vent-Free Propane Convector
RinnaiOriginal price $ 942.20 - Original price $ 942.20Original price$ 942.20$ 942.20 - $ 942.20Current price $ 942.20Rinnai FC510P Vent-Free Fan Convector – Propane (LP) The Rinnai FC510P is a compact, quiet, and efficient vent-free heater designed for small room...
View full detailsOriginal price $ 942.20 - Original price $ 942.20Original price$ 942.20$ 942.20 - $ 942.20Current price $ 942.20 -
Rinnai - FC824N - Vent-Free Natural Gas Convector
RinnaiOriginal price $ 1,134.70 - Original price $ 1,134.70Original price$ 1,134.70$ 1,134.70 - $ 1,134.70Current price $ 1,134.70Rinnai FC824N Vent-Free Fan Convector – Natural Gas The Rinnai FC824N delivers powerful, even heat for medium to large rooms using clean-burning N...
View full detailsOriginal price $ 1,134.70 - Original price $ 1,134.70Original price$ 1,134.70$ 1,134.70 - $ 1,134.70Current price $ 1,134.70 -
Rinnai - FC824P - Vent-Free Propane Convector
RinnaiOriginal price $ 1,134.70 - Original price $ 1,134.70Original price$ 1,134.70$ 1,134.70 - $ 1,134.70Current price $ 1,134.70Rinnai FC824P Vent-Free Fan Convector – Propane (LP) The Rinnai FC824P provides strong, efficient heat for medium to large rooms using clean-burni...
View full detailsOriginal price $ 1,134.70 - Original price $ 1,134.70Original price$ 1,134.70$ 1,134.70 - $ 1,134.70Current price $ 1,134.70 -
Rinnai - E110CRN - Condensing Natural Gas Boiler
RinnaiOriginal price $ 2,562.75 - Original price $ 2,562.75Original price$ 2,562.75$ 2,562.75 - $ 2,562.75Current price $ 2,562.75Rinnai, dedicated to the latest technology and innovation in water heating efficiency and reliability, have created the best condensing boiler on t...
View full detailsOriginal price $ 2,562.75 - Original price $ 2,562.75Original price$ 2,562.75$ 2,562.75 - $ 2,562.75Current price $ 2,562.75Sold out -
Rinnai - CHS199100iN - Demand Duo Tankless Hybrid Water Heater
RinnaiOriginal price $ 5,900.00 - Original price $ 5,900.00Original price$ 5,900.00$ 5,900.00 - $ 5,900.00Current price $ 5,900.00This unique Commercial Hybrid system combines all the benefits of the Rinnai C199 Condensing Tankless Water Heater with a 119-gallon storage tank a...
View full detailsOriginal price $ 5,900.00 - Original price $ 5,900.00Original price$ 5,900.00$ 5,900.00 - $ 5,900.00Current price $ 5,900.00Sold out -
Rinnai - PCD03-SM2-BP - Bottom Plate Tankless Water Heater Accessories
RinnaiOriginal price $ 58.00 - Original price $ 58.00Original price$ 58.00$ 58.00 - $ 58.00Current price $ 58.00Features: Bottom plate for external value series Compatible with Rinnai models: RL75EN,RL75EP,RL94EN,RL94EP Manufacturer warranty: 5 Years Specif...
View full detailsOriginal price $ 58.00 - Original price $ 58.00Original price$ 58.00$ 58.00 - $ 58.00Current price $ 58.00Sold out -
Rinnai - 223184 - 21" Universal Non-Cond Horizontal Termination
RinnaiOriginal price $ 84.00 - Original price $ 84.00Original price$ 84.00$ 84.00 - $ 84.00Current price $ 84.00Rinnai's 223184 21" universal non-condensing horizontal termination kit is compatible with all Rinnai tankless water heater models except the 98 se...
View full detailsOriginal price $ 84.00 - Original price $ 84.00Original price$ 84.00$ 84.00 - $ 84.00Current price $ 84.00 -
Rinnai - 223187 - Horizontal Termination Diverter Kit 21"
RinnaiOriginal price $ 117.00 - Original price $ 117.00Original price$ 117.00$ 117.00 - $ 117.00Current price $ 117.00Raised termination kit for Rinnai tankless water heater venting in the shape of an L to go outside of side wall. Inner exhaust material is aluminum...
View full detailsOriginal price $ 117.00 - Original price $ 117.00Original price$ 117.00$ 117.00 - $ 117.00Current price $ 117.00Sold out -
Rinnai - REU-MSB-M - Multi Unit Control kit
RinnaiOriginal price $ 235.00 - Original price $ 235.00Original price$ 235.00$ 235.00 - $ 235.00Current price $ 235.00Rinnai Multi Unit Control kit REU-MSB-M For use with Rinnai tankless water heaters. Electronically connects 3 tankless water heaters and allows the...
View full detailsOriginal price $ 235.00 - Original price $ 235.00Original price$ 235.00$ 235.00 - $ 235.00Current price $ 235.00 -
Rinnai - MSB-M - Connect Cable
RinnaiOriginal price $ 102.00 - Original price $ 102.00Original price$ 102.00$ 102.00 - $ 102.00Current price $ 102.00Rinnai Connect Cable MSB-M for Rinnai tankless water heaters. 13.1 ft with terminal connectors.
Original price $ 102.00 - Original price $ 102.00Original price$ 102.00$ 102.00 - $ 102.00Current price $ 102.00 -
Rinnai - REU-MSB-C1 - Cable Connect
RinnaiOriginal price $ 72.00 - Original price $ 72.00Original price$ 72.00$ 72.00 - $ 72.00Current price $ 72.00Rinnai Cable Connect REU-MSB-C1 for Rinnai tankless water heater controllers.
Original price $ 72.00 - Original price $ 72.00Original price$ 72.00$ 72.00 - $ 72.00Current price $ 72.00 -
Rinnai - REU-EZC-1US - EZ Connect Cord for Rinnai units
RinnaiOriginal price $ 71.00 - Original price $ 71.00Original price$ 71.00$ 71.00 - $ 71.00Current price $ 71.00EZ Connect Cord for multiple connecting Rinnai units together.
Original price $ 71.00 - Original price $ 71.00Original price$ 71.00$ 71.00 - $ 71.00Current price $ 71.00Sold out -
Rinnai MC-195T-US Digital Recirculation Controller
RinnaiOriginal price $ 275.30 - Original price $ 275.30Original price$ 275.30$ 275.30 - $ 275.30Current price $ 275.30Rinnai Recirculation Controller Rinnai MC-195T-US Digital Recirculation Controller brings added convenience and flexibility to your compatible Rinn...
View full detailsOriginal price $ 275.30 - Original price $ 275.30Original price$ 275.30$ 275.30 - $ 275.30Current price $ 275.30 -
Rinnai - PCD07-SM - Pipe Cover Enclosure Bottom Plate for Ultra Series
RinnaiOriginal price $ 58.00 - Original price $ 58.00Original price$ 58.00$ 58.00 - $ 58.00Current price $ 58.00Rinnai euro white bottom plate to be used with PCD07-SM to continue covering pipes.
Original price $ 58.00 - Original price $ 58.00Original price$ 58.00$ 58.00 - $ 58.00Current price $ 58.00 -
Rinnai PCD07-EW Euro White Pipe Cover Enclosure for RUS Ultra Series Tankless Water Heaters
RinnaiOriginal price $ 246.95 - Original price $ 246.95Original price$ 246.95$ 246.95 - $ 246.95Current price $ 246.95Rinnai cover enclosure in European White color for ultra series tankless water heaters. Cover your pipes protecting them with this cover. SKU: PCD0...
View full detailsOriginal price $ 246.95 - Original price $ 246.95Original price$ 246.95$ 246.95 - $ 246.95Current price $ 246.95 -
Rinnai - PCD03-SM2 - Pipe Cover Enclosure for Luxury Series
RinnaiOriginal price $ 200.00 - Original price $ 200.00Original price$ 200.00$ 200.00 - $ 200.00Current price $ 200.00Rinnai cover enclosure for luxury series tankless water heaters. Cover your pipes to prevent damage, heat, cold from the pipes. This Cover fits w...
View full detailsOriginal price $ 200.00 - Original price $ 200.00Original price$ 200.00$ 200.00 - $ 200.00Current price $ 200.00Sold out -
Rinnai - PCD01-SM2 - Pipe Cover Enclosure for Luxury Series
RinnaiOriginal price $ 141.00 - Original price $ 141.00Original price$ 141.00$ 141.00 - $ 141.00Current price $ 141.00Rinnai cover enclosure for luxury series tankless water heaters. Cover your pipes to prevent damage, heat, cold from the pipes. SKU: PCD01-SM2 Act...
View full detailsOriginal price $ 141.00 - Original price $ 141.00Original price$ 141.00$ 141.00 - $ 141.00Current price $ 141.00Sold out -
Rinnai - 184162PP - 38" Roof Discharge for Condensing Units
RinnaiOriginal price $ 110.00 - Original price $ 110.00Original price$ 110.00$ 110.00 - $ 110.00Current price $ 110.00Rinnai roof discharge 38" for condensing ultra series tankless water heaters. SKU: 184162PP Color of product may differ from image. This Venting ...
View full detailsOriginal price $ 110.00 - Original price $ 110.00Original price$ 110.00$ 110.00 - $ 110.00Current price $ 110.00 -
Rinnai - 184118S - 18" (above roof) Roof Discharge Terminal
RinnaiOriginal price $ 115.00 - Original price $ 115.00Original price$ 115.00$ 115.00 - $ 115.00Current price $ 115.00Rinnai roof discharge 18" for non-condensing ultra series tankless water heaters. SKU: 184118S Color of product may differ from image. This ventin...
View full detailsOriginal price $ 115.00 - Original price $ 115.00Original price$ 115.00$ 115.00 - $ 115.00Current price $ 115.00 -
Rinnai - 189952 - Shingle Roof Flashing (8/12 to 16/12 pitch)
RinnaiOriginal price $ 87.00 - Original price $ 87.00Original price$ 87.00$ 87.00 - $ 87.00Current price $ 87.00Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters. With Rinnai Common Ve...
View full detailsOriginal price $ 87.00 - Original price $ 87.00Original price$ 87.00$ 87.00 - $ 87.00Current price $ 87.00Sold out -
Rinnai - 189951 - Shingle Roof Flashing (6/12 to 12/12 pitch)
RinnaiOriginal price $ 87.00 - Original price $ 87.00Original price$ 87.00$ 87.00 - $ 87.00Current price $ 87.00Rinnai shingle roof flashing that is made of high quality plastic. It's meant for 6/12 to 12/12 pitch. SKU: 189951 Actual product's color may vary ...
View full detailsOriginal price $ 87.00 - Original price $ 87.00Original price$ 87.00$ 87.00 - $ 87.00Current price $ 87.00Sold out
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