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 - 103000079 - Natural Gas to LP Gas Conversion Kit for RU180e Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conversion NG LPG...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Sold out -
Rinnai - 103000083 - Natural Gas to LP Gas Conversion Kit for RU130e Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conversion NG LPG...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00 -
Rinnai 103000082 Natural Gas to LP Gas Conversion Kit for RU130i Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion For RU103i Tankless Water Heater Simply remove 3 screws, change the orifice, parameter, and apply the new data plate ...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00 -
Rinnai - 103000081 - Natural Gas to LP Gas Conversion Kit for RU160e Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conv NG LPG Univ ...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00 -
Rinnai - 103000078 - Natural Gas to LP Gas Conversion Kit for RU180i Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conversion NG LPG...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00 -
Rinnai - 103000077 - Natural Gas to LP Gas Conversion Kit for RU199e Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conv NG LPG Univ ...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00 -
Rinnai - 103000076 - Natural Gas to LP Gas Conversion Kit for RU199i Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conv NG LPG Uni...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00 -
Rinnai - 103000080 - Natural Gas to LP Gas Conversion Kit for RU160i Tankless Water Heater
RinnaiOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Quick-n Easy Gas Conversion Remove 3 screws, change the orifice, parameter, and apply the new data plate Model Compatibility Conv NG LPG Univ...
View full detailsOriginal price $ 45.00 - Original price $ 45.00Original price$ 45.00$ 45.00 - $ 45.00Current price $ 45.00Sold out -
Rinnai - HVENT-3 - DiversiTech Horizontal 3" Termination Vent
RinnaiOriginal price $ 34.97 - Original price $ 34.97Original price$ 34.97$ 34.97 - $ 34.97Current price $ 34.97Horizontal 3" Termination Vent Horizontal vent kits for use in venting high efficiency fossil fuel appliances. The low profile kit hides the vent f...
View full detailsOriginal price $ 34.97 - Original price $ 34.97Original price$ 34.97$ 34.97 - $ 34.97Current price $ 34.97 -
Rinnai HVENT-2 DiversiTech Horizontal 2" Termination Vent
RinnaiOriginal price $ 34.97 - Original price $ 34.97Original price$ 34.97$ 34.97 - $ 34.97Current price $ 34.972 Inch Horizontal Vent Termination The DiversiTech HVENT-2 2-inch Horizontal Termination Kit is the premium solution for cleanly venting high-effic...
View full detailsOriginal price $ 34.97 - Original price $ 34.97Original price$ 34.97$ 34.97 - $ 34.97Current price $ 34.97 -
Rinnai - CVENT3 - DiversiTech Concentric 3" Vent Termination
RinnaiOriginal price $ 49.58 - Original price $ 49.58Original price$ 49.58$ 49.58 - $ 49.58Current price $ 49.58Concentric 3" Vent Termination The DiversiTech 3-inch Concentric Vent Kit is the solution for simplifying high-efficiency furnace installations. T...
View full detailsOriginal price $ 49.58 - Original price $ 49.58Original price$ 49.58$ 49.58 - $ 49.58Current price $ 49.58 -
Rinnai - CVENT2 - DiversiTech Concentric 2" Vent Termination
RinnaiOriginal price $ 50.02 - Original price $ 50.02Original price$ 50.02$ 50.02 - $ 50.02Current price $ 50.02DiversiTech 2 Inch Concentric Vent Termination The DiversiTech Concentric 2" Vent makes it easier to have a two-pipe installation for high efficien...
View full detailsOriginal price $ 50.02 - Original price $ 50.02Original price$ 50.02$ 50.02 - $ 50.02Current price $ 50.02 -
Rinnai - REU-EZC-2 - EZConnect Cable works with Sensei
RinnaiOriginal price $ 71.00 - Original price $ 71.00Original price$ 71.00$ 71.00 - $ 71.00Current price $ 71.00Electronically connects two units so they function as one hot water source. Updated wire works with the Sensei group of water heaters and Pre Sens...
View full detailsOriginal price $ 71.00 - Original price $ 71.00Original price$ 71.00$ 71.00 - $ 71.00Current price $ 71.00 -
Rinnai - 229310NPP - 2inch / 4 inch Condensing Vent Pipe Extension, 39 Inches
RinnaiOriginal price $ 49.99 - Original price $ 49.99Original price$ 49.99$ 49.99 - $ 49.99Current price $ 49.99For use with the following models: RU199i RU180i RU160i RU130i RUR199i RUR160i CU199i CU160i Material of Inner/Exhaust - Polypropylene Mater...
View full detailsOriginal price $ 49.99 - Original price $ 49.99Original price$ 49.99$ 49.99 - $ 49.99Current price $ 49.99 -
Rinnai - 224356NPP - 2inch / 4 inch Condensing Roof Discharge Termination 20 in. Above Roof
RinnaiOriginal price $ 68.70 - Original price $ 68.70Original price$ 68.70$ 68.70 - $ 68.70Current price $ 68.70For use with the following models: RU199i RU180i RU160i RU130i RUR199i RUR160i CU199i CU160i Material of Inner/Exhaust - Polypropylene Mater...
View full detailsOriginal price $ 68.70 - Original price $ 68.70Original price$ 68.70$ 68.70 - $ 68.70Current price $ 68.70 -
Rinnai - M120SN - M-Series Heat Only 120,000 BTU Condensing Boiler
RinnaiOriginal price $ 2,493.07 - Original price $ 2,493.07Original price$ 2,493.07$ 2,493.07 - $ 2,493.07Current price $ 2,493.07Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 2,493.07 - Original price $ 2,493.07Original price$ 2,493.07$ 2,493.07 - $ 2,493.07Current price $ 2,493.07Sold out -
Rinnai - M160SN - M-Series Heat Only 160,000 BTU Condensing Boiler
RinnaiOriginal price $ 2,393.24 - Original price $ 2,393.24Original price$ 2,393.24$ 2,393.24 - $ 2,393.24Current price $ 2,393.24Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 2,393.24 - Original price $ 2,393.24Original price$ 2,393.24$ 2,393.24 - $ 2,393.24Current price $ 2,393.24Sold out -
Rinnai - M090SN - M-Series Heat Only 90,000 BTU Condensing Boiler
RinnaiOriginal price $ 1,338.54 - Original price $ 1,338.54Original price$ 1,338.54$ 1,338.54 - $ 1,338.54Current price $ 1,338.54Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 1,338.54 - Original price $ 1,338.54Original price$ 1,338.54$ 1,338.54 - $ 1,338.54Current price $ 1,338.54Sold out -
Rinnai - M060SN - M-Series Heat Only 60,000 BTU Condensing Boiler
RinnaiOriginal price $ 1,181.70 - Original price $ 1,181.70Original price$ 1,181.70$ 1,181.70 - $ 1,181.70Current price $ 1,181.70Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 1,181.70 - Original price $ 1,181.70Original price$ 1,181.70$ 1,181.70 - $ 1,181.70Current price $ 1,181.70Sold out -
Rinnai - M090CN - M-Series Domestic Hot Water 5.1 GPH 90,000BTU Combi Condensing Boiler
RinnaiOriginal price $ 2,799.93 - Original price $ 2,799.93Original price$ 2,799.93$ 2,799.93 - $ 2,799.93Current price $ 2,799.93Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 2,799.93 - Original price $ 2,799.93Original price$ 2,799.93$ 2,799.93 - $ 2,799.93Current price $ 2,799.93Sold out -
Rinnai - M060CN - M-Series Domestic Hot Water 5.1 GPH 60,000BTU Combi Condensing Boiler
RinnaiOriginal price $ 1,346.49 - Original price $ 1,346.49Original price$ 1,346.49$ 1,346.49 - $ 1,346.49Current price $ 1,346.49Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 1,346.49 - Original price $ 1,346.49Original price$ 1,346.49$ 1,346.49 - $ 1,346.49Current price $ 1,346.49Sold out -
Rinnai - M160CN - M-Series Domestic Hot Water 8.5 GPH 160,000 BTU Combi Condensing Boiler
RinnaiOriginal price $ 2,692.76 - Original price $ 2,692.76Original price$ 2,692.76$ 2,692.76 - $ 2,692.76Current price $ 2,692.76Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 2,692.76 - Original price $ 2,692.76Original price$ 2,692.76$ 2,692.76 - $ 2,692.76Current price $ 2,692.76Sold out -
Rinnai - M120CN - M-Series Domestic Hot Water 8.5 GPH 120,000 BTU Combi Condensing Boiler
RinnaiOriginal price $ 2,793.07 - Original price $ 2,793.07Original price$ 2,793.07$ 2,793.07 - $ 2,793.07Current price $ 2,793.07Why the "M" Series? For maximum momentum. Using proven technology, these boilers are designed to keep your day going and your family happy. Stand...
View full detailsOriginal price $ 2,793.07 - Original price $ 2,793.07Original price$ 2,793.07$ 2,793.07 - $ 2,793.07Current price $ 2,793.07Sold out -
Rinnai GTK15 Grundfos Pump with Timer Kit for Rinnai Circ-Logic Enabled Units
RinnaiOriginal price $ 488.71 - Original price $ 488.71Original price$ 488.71$ 488.71 - $ 488.71Current price $ 488.71Grundfos GTK15 Pump Kit The Grundfos GTK15 Pump and Timer Kit builds on the reliable design of Rinnai Tankless Water Heaters, providing a steady fl...
View full detailsOriginal price $ 488.71 - Original price $ 488.71Original price$ 488.71$ 488.71 - $ 488.71Current price $ 488.71
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