Rinnai Tankless Water Heaters
Explore Rinnai’s technology, innovation and top-rated collections
Introduction
- Brand History
- Founded in 1920 in Japan, Rinnai has nearly a century of experience in gas appliance manufacturing and has been a pioneer in tankless water heating technology since the 1960s. The company entered the North American market in 1974 and has established itself as one of the leading tankless water heater manufacturers globally.
- Reputation
- Rinnai is widely recognized as a premium brand in the tankless water heater industry, known for exceptional build quality, reliability, and innovative technology. The brand consistently receives high ratings from contractors, plumbers, and homeowners for performance and durability.
- Specialization
- Rinnai specializes exclusively in gas-fired tankless water heaters, focusing on condensing and non-condensing models for residential and commercial applications. They offer both indoor and outdoor units with a comprehensive range of BTU outputs to meet various demand requirements.
Technologies & Innovation
- Proprietary Features
- Rinnai's Circ-Logic technology provides intelligent recirculation with built-in thermal bypass valve, ThermaCirc360 technology for instant hot water, and dual heat exchangers in condensing models for maximum efficiency. Their units feature copper heat exchangers and commercial-grade components.
- Energy Efficiency
- Rinnai tankless units achieve up to 96% thermal efficiency in condensing models and 82-84% in non-condensing units. They are ENERGY STAR certified and can reduce energy costs by up to 40% compared to traditional tank water heaters through on-demand heating and advanced modulation technology.
- Smart Controls
- Rinnai offers WiFi-enabled smart controls through their Control-R app, allowing remote monitoring, temperature adjustment, and system diagnostics. Digital temperature controllers provide precise temperature control with ±1°F accuracy, and multiple units can be linked for increased capacity.
- Certifications
- All Rinnai tankless water heaters are certified by major North American standards organizations including CSA, AHRI, and meet or exceed ANSI standards. Many models carry ENERGY STAR certification and comply with Ultra-Low NOx emission requirements in California and Texas.
Best Use Cases
- Residential Use
- Ideal for homes with 1-4 bathrooms, particularly effective for families with predictable hot water usage patterns. Excellent for homes where space is at a premium, new construction, or replacing failed tank water heaters. Works well in homes with natural gas or propane availability.
- Commercial Use
- Suitable for small to medium commercial applications including restaurants, salons, small hotels, and office buildings. Multiple units can be manifolded together for high-demand commercial installations, with commercial-grade models available for continuous operation.
- Climate Compatibility
- Performs well in most climates, with outdoor models rated for operation in temperatures as low as -22°F with freeze protection. Indoor models require proper venting but are not affected by ambient temperature. Condensing models work efficiently in all climates.
- Installation Types
- Available in both indoor and outdoor configurations. Indoor models offer direct vent, power vent, and condensing options. Outdoor models eliminate venting requirements. Can be installed in utility rooms, basements, garages, or exterior walls with proper clearances.
Why Choose Rinnai?
- Unique Selling Points
- Rinnai's exclusive focus on tankless technology for nearly 60 years, superior build quality with commercial-grade components, industry-leading customer support, and comprehensive training programs for installers. Their Circ-Logic and ThermaCirc360 technologies provide unique solutions for instant hot water delivery.
- Comparative Advantages
- Longer lifespan than most competitors (20+ years), better temperature stability, lower maintenance requirements, extensive dealer network, and superior technical support. Rinnai units typically have higher flow rates and better modulation than comparable models from other manufacturers.
- Warranty
- Rinnai offers industry-leading warranty coverage with up to 12 years on heat exchanger for residential use, 5 years on parts, and 1 year on labor. Commercial applications receive 5 years on heat exchanger and 2 years on parts. Extended warranty options are available through authorized dealers.
Rinnai Best Sellers
| Image | Product Name | SKU | List Price | Low Price | Reviews | Rating | Action |
|---|---|---|---|---|---|---|---|
 | Rinnai Sensei RX199IN 199000 BTU Natural Gas Tankless Water Heater | 14274739099132667857 | — | $1,537.90 | 103 | 4.5/5 | View Details |
 | Rinnai V75IN Indoor Natural Gas Tankless Water Heater | 2555208968827018180 | — | $899.99 | 133 | 4.3/5 | View Details |
 | Rinnai Sensei RXP199iN 199000 BTU Natural Gas Tankless Water Heater | 1588118017603875063 | — | $1,866.90 | 57 | 4.1/5 | View Details |
 | Rinnai RE Series 9.8 GPM 199000-BTU Natural Gas Tankless Water Heater | 10936917535678364956 | — | $1,307.15 | 33 | 4.3/5 | View Details |
 | Rinnai High Efficiency Indoor Natural Gas Tankless Water Heater REP199iN | 6120880167190035643 | — | $1,297.17 | 1 | 5/5 | View Details |
 | Rinnai V53DeN 5.3 GPM Outdoor Natural Gas Tankless Water Heater | 15301215265844705376 | — | $707.99 | 62 | 4/5 | View Details |
 | Rinnai RE Series 5.3 GPM 140,000 BTU Indoor Natural Gas Non-Condensing Tankless Water Heater RE140iN | 9005305257049886768 | — | $830.20 | 8 | 4.2/5 | View Details |
 | Rinnai RSC199IN Sensei Tankless Water Heater | 11580595075224772940 | — | $1,878.66 | 1200 | 4/5 | View Details |
 | Rinnai 7.5 GPM Natural Gas Tankless Water Heater RL75IN | 4581444836009187275 | — | $1,032.14 | 376 | 4.2/5 | View Details |
 | Rinnai HE Series V53DeP Propane Tankless Water Heater | 16957220706724956461 | — | $669.50 | 69 | 4.4/5 | View Details |
 | Rinnai Sensei CX199IN Commercial Water Heater | 15457644954567502770 | — | $1,554.46 | 10 | 4.5/5 | View Details |
 | Rinnai RE Series 9.8 GPM 199,000 BTU Outdoor Natural Gas Non-Condensing Tankless Water Heater RE199eN | 5441102213016426826 | — | $1,336.30 | 49 | 4.3/5 | View Details |
 | rinnai RU199IN 199000 BTU Indoor Natural Gas Tankless Water Heater | 8543553882916138140 | — | $2,347.50 | 394 | 4.5/5 | View Details |
 | Rinnai RE140IP Non-Condensing Propane Tankless Water Heater | 377215847592359805 | — | $830.20 | 3 | 4.3/5 | View Details |
 | Rinnai RE Series 9.8 GPM 199000-BTU Outdoor Liquid Propane Tankless Water Heater | 9135671110136024416 | — | $1,336.30 | 12 | 4.5/5 | View Details |
 | Rinnai RE Series Tankless Water Heater RE140EN | 1818709266163901382 | — | $830.20 | 37 | 4.4/5 | View Details |
 | Rinnai RUCS75IN 7.5 GPM Residential Indoor Natural Gas Tankless Water Heater | 4631056401264710901 | — | $980.00 | 197 | 4.3/5 | View Details |
 | Rinnai RUCS65iN Tankless Water Heater | 329774209470671056 | — | $649.00 | 22 | 4.3/5 | View Details |
 | Rinnai RE Series 5.3 GPM 140,000 BTU Outdoor Liquid Propane Non-Condensing Tankless Water Heater RE140EP | 6764027432721115868 | — | $889.50 | 2 | 4.5/5 | View Details |
 | Rinnai RSC199eN Super High Efficiency Plus 11 GPM 199000 BTU Natural Gas Tankless | 14437994677650337126 | — | $1,861.00 | 38 | 4.2/5 | View Details |
| Rinnai Sensei RXP160IN 9 GPM Tankless Water Heater | 12828135281997332642 | — | $1,521.80 | 7 | 3/5 | View Details | |
| Rinnai RE Series RE160EP 6.6 GPM 160,000 BTU Outdoor Liquid Propane Tankless Water Heater | 5904633131318566087 | — | $932.40 | 15 | 5/5 | View Details | |
| Rinnai V65iN 6.5 GPM Indoor Natural Gas Tankless Water Heater | 426960106974897272 | — | $899.99 | 80 | 4.4/5 | View Details | |
| rinnai RU160IN Tankless Water Heater | 7329975394878358207 | — | $1,302.70 | 143 | 4.4/5 | View Details | |
| Rinnai Natural Gas Tankless Water Heater RUS75eN | 3818706624347316643 | — | $1,870.73 | 14 | 4.5/5 | View Details | |
| Rinnai V65eN Outdoor Natural Gas Tankless Water Heater | 13003542367677741988 | — | $669.50 | 204 | 4.3/5 | View Details | |
| Rinnai Demand Duo H-Series Commercial Hybrid Water Heating System CHS160100HCXiN | 4050246316966486972 | — | $8,287.50 | /5 | View Details | ||
| Rinnai Sensei 11 GPM 199000 BTU Natural Gas Tankless Water Heater | 15446775570266609958 | — | $1,582.70 | 2 | 4.5/5 | View Details | |
| Rinnai Tankless Water Heater Exterior CTWH 160K BTU 7.5 GPM RUS75eP | 9752234475133601437 | — | $980.00 | 5 | 4.6/5 | View Details | |
| Rinnai RU199eN Sensei Outdoor Natural Gas Condensing Tankless Water Heater | 5331483013727724679 | — | $1,384.11 | 18 | 4.7/5 | View Details | |
| Rinnai Demand Duo H-Series 119 Gallon 199,000 BTU Commercial Hybrid Water Heating System | 13699877667297388253 | — | $8,662.50 | /5 | View Details | ||
| Rinnai 73W Tankless Water Heater | 11387166890084112854 | — | $1,614.20 | /5 | View Details | ||
| Rinnai CU199eP Commercial Propane Condensing Tankless Water Heater, Outdoor Installation, 11 GPM | 3323466569300351595 | — | $1,545.00 | /5 | View Details | ||
| Rinnai RSC199IN Super High Efficiency Plus 11 GPM 199000 BTU Natural Gas Interior Tankless | 15000176093780144889 | — | $1,866.90 | 232 | 4.3/5 | View Details | |
| Rinnai TRW02CXPiN Wall-Mounted 2 Unit Tankless Rack System | 14344360719316224732 | — | $5,812.50 | /5 | View Details | ||
| Rinnai Natural Gas Tankless Water Heater RUS65eN | 14072104990007230033 | — | $649.00 | 6 | 4.7/5 | View Details | |
| Rinnai RSC160eN Super High Efficiency Plus Tankless Water Heater | 12474847060594454707 | — | $1,402.32 | 9 | 4.1/5 | View Details | |
| Rinnai SE+ Series 7 GPM Outdoor Condensing Tankless Water Heater, LP, No Module | 13549330359610343893 | — | $1,421.46 | /5 | View Details | ||
| Rinnai RSC160iN Super High Efficiency Plus Tankless Water Heater | 8093690509743093111 | — | $1,369.62 | 53 | 4.4/5 | View Details | |
| Rinnai Demand Duo R-Series 119 Gal. Commercial Hybrid Water Heating System | 17333524181893724177 | — | $6,566.25 | /5 | View Details |
Rinnai Collections
EZ Series
Designed for fast and easy tankless upgrades, featuring top-mounted connections that simplify replacement of traditional tank water heaters.
Released: 2019-05-15
Key Features
- High-efficiency condensing (96% UEF)
- 25-year heat exchanger warranty
NRCR Series
Flagship recirculation line with built-in pump providing instant hot water to every fixture.
Released: 2020-11-01
Key Features
- Dual stainless heat exchangers
- Wi-Fi compatibility
- Intelligent recirculation
NRC Series
Dependable condensing units offering high output and excellent thermal efficiency, up to 9.8 GPM.
Released: 2018-08-20
Key Features
- Compact to heavy-duty models
- Long-lasting dual exchanger
ecoTOUGH Series
Eco-friendly line meeting stricter emissions and efficiency standards, ideal for green installs.
Released: 2021-03-10
Key Features
- Low NOx emissions
- ENERGY STAR certified
ProTOUGH Series
Built for contractors with rugged commercial-grade components and extended warranties.
Released: 2022-01-05
Key Features
- Commercial-grade construction
- Extended warranty options
ValueSolutions Series
Budget-friendly, non-condensing models offering reliable performance without premium price.
Released: 2017-06-12
Key Features
- Lower upfront cost
- Proven Noritz quality
NCC Series
Commercial cascade lineup handling up to 199,900 BTU for large-scale hot water demands.
Released: 2019-09-30
Key Features
- Cascadable for higher capacity
- Robust commercial output
NRCB Series
Combination boiler units delivering both space heating and domestic hot water in one compact package.
Released: 2020-07-22
Key Features
- Space heating + DHW
- High efficiency condensing