RC98HPi (Condensing): Featured in the 2010 HGTV Dream Home, this indoor model offered high-efficiency, condensing technology.

RC80HPe (Condensing): Recognized by Green Builder Magazine as one of the "Hot 50 Products of 2010". R75LSi (Indoor, Non-Condensing): Awarded "Best Whole-House Tankless Water Heater" by Bestcovery.com in 2010. V-Series (2010 Era): 

The V53e (Exterior) and various V65/V75 models (such as V65IP, V75LSe) were standard, non-condensing, high-efficiency units used for residential, including manufactured home, applications.

Key 2010 Rinnai Technologies & Features: Condensing Technology: Units designed to recapture residual heat from flue gases. Venting: Included concentric venting systems. Efficiency: Models in 2010 were already utilizing energy-saving, no-pilot-light technology. 

How to Identify a 2010 Model: If you are looking at a specific unit, the manufacturing date can be determined from the serial number. For Rinnai units made during that time, a serial number starting with a letter indicating the year (e.g., a "B" or "C" depending on the specific chart used) and followed by a letter for the month (e.g., "A" for Jan, "B" for Feb) will pinpoint the date. For example, a serial number starting with "B" often corresponds to 2010.

Based on Rinnai's serial number coding used from 2009 onwards, products manufactured in 2011 are identified by a serial number starting with the letter C (for the year 2011).

Common Rinnai tankless water heater models available around 2011 included:

RC98HPi (Condensing model, featured in the 2011 HGTV Dream Home) V-Series (Value Series): Such as the V65i (VA65i) or V75i (VA75i) R-Series (Luxury/HE Series): Models like the RL75i or RL94i were common during that era. Key Identification for 2011 Models: Serial Number: 

The first letter is 'C'. Month of Manufacture: The second letter indicates the month (e.g., "CD" = April 2011, "CC" = March 2011). Location: Found on the rating plate on the side of the unit. For 2011, these units were typically non-condensing (V-series) or early high-efficiency condensing (RC98) models.

Rinnai tankless water heaters manufactured in 2012 primarily included the Luxury Series (e.g., RL75, RL94) and Value Series (V53, V65, V75). These models featured enhanced scale detection, built-in Circ-Logic™ for recirculation, and improved, lower-NOx emissions. 

Units from this year generally use a serial number format where the first letter indicates the year (e.g., 'D' for 2011/2012, depending on the specific letter-year mapping). Key 2012 Rinnai Models and Features: Luxury Series (Rinnai RL94i/e, RL75i/e): Featured enhanced scale detection to reduce long-term damage and a temperature lock function for safety.

Value Series (Rinnai V53, V65, V75):

 Designed for small-to-mid-sized homes, offering 0.6 to 7.5 GPM capacity. Condensing Technology: In 2012, Rinnai launched new accessories for their condensing line, including a dual-pipe venting system and a condensate neutralizer. Specifications: 

Typical 2012 models included features like electronic ignition, white exterior/interior cases, and maximum flow rates ranging from 5.3 to 9.4 GPM depending on the series. Identifying a 2012 Model:

Rinnai tankless water heaters manufactured in 2013, such as the V75e series, are identified by a serial number starting with the letter 'E' or 'F' (representing the year code for 2013-2014).

 These units often include models from the V-series (Value) or early high-efficiency RU series, which typically have a 10-15 year heat exchanger warranty. Key Details for 2013 Rinnai Models: Identification: 

The first letter of the serial number corresponds to the year of manufacture. 

For 2013, this is often "E". Common Series: Models available around this period included the V-series (e.g., V75e, V65e) for residential, or early R-series for continuous hot water needs. Key Features:

 These units were designed for energy efficiency, utilizing, in some cases, early versions of Rinnai Circ-Logic™ technology for recirculation.

Locating Information: The rating plate, which lists the model and serial number, is generally found on the front or side of the unit.

It is recommended to check the specific, full serial number on the unit's rating plate to confirm the exact month and year of production.

Rinnai tankless water heaters manufactured in 2014 primarily featured the newly introduced Ultra Series (RUC98i, RUC80i, RUR98), which allowed for both concentric and twin-pipe PVC venting. Other 2014 models included the Luxury Series (RL94e, RL75e, V75i, V75e, V65e, V53e) and the RH180 hybrid unit. Key 2014 Rinnai Model Details: Ultra Series (Condensing): Models RUC98i and RUC80i were highlighted for their ability to use PVC, CPVC, or concentric venting. The RUR98eN was also available. Luxury Series: Rinnai's 2014 documentation includes the RL94e, RL75e, V75i, V75e, V65e, and V53e. Hybrid: The RH180, a unit combining a 40-gallon storage tank with tankless technology, was highlighted in 2014.

Serial Number Check: To confirm a 2014 manufacturing date, the first letter of the serial number corresponds to the year (e.g., E = 2014, D = 2013, F = 2015), as Rinnai started this system in 2009.

Key Features in 2014 Models: Venting Flexibility:

 The RUC series introduced the capability for both concentric and twin-pipe PVC venting on the same unit.

Recirculation: The RUR models offered integrated recirculation technology. Control: Units typically included or were compatible with the MC-91-2 controller.

RINNAI TANKLESS WATER HEATERS - ECCO Supply May 15, 2014 — *Controller not included NOTE: Units include an integrated MC-91-2 controller, 98° – 120°F. * TANKLESS WATER HEATERS 

Rinnai RH180 IBS 2014 Reveal Mar 20, 2014 — so if you've got an older 50-gallon gas that has this 4-in B vent this one mates right in the other thing that's really important ...

                                 In 2015, Rinnai manufactured and introduced several models to their tankless water heater lineup, with a focus on expanding their Ultra Series (condensing) and introducing new mid-level BTU units. 

Key models available and released during this period included the RUR98i/RUR98e, RUC90i/RU90e, and the RL75 series. Rinnai 2015 Product Lineup Ultra Series (Condensing) - 2015 Additions: RUR98i (Indoor) / RUR98e (Outdoor): 

These models featured integrated recirculation pumps, allowing for faster hot water delivery using a thermal bypass valve. RUC90i / RU90e: These were introduced as mid-level BTU condensing units. 

RUC98i / RUR98i: High-efficiency units capable of using either Natural Gas or Propane. Luxury Series / RL Series: RL75iP (RRL75iP) / RL75e: These were active models in 2015, with 12-year warranties on the heat exchanger. Commercial Models (2015): C199: A 199,000 BTU condensing tankless water heater specifically designed for commercial applications. Demand Duo™: 

A commercial hybrid system that combined the C199 tankless unit with a 119-gallon tank. 2015 Model Features Technology: Non-condensing (V series) and condensing (Ultra/RU series). Efficiency: 

The 2015 models offered high-efficiency ratings, with some models designed for lower BTU needs (130,000 to 160,000 BTU). Venting: Included options for concentric or dual-pipe venting. Key 2015 Launch: Rinnai began selling their units at Lowe's in 2015, strengthening their presence in the U.S. market. In 2016, Rinnai's tankless water heater lineup was primarily categorized into three main series, which were designed for both residential and commercial applications. 

The models available during that time focused on high-efficiency non-condensing (HE) and condensing (SE/SE+) technologies. Key 2016 Rinnai Model Series: SE+ Series (Super High-Efficiency): These were top-tier condensing models, including units like the RU98 (199,000 BTU) and RU80 (180,000 BTU). 

These units used concentric or twin-pipe venting. SE Series (Condensing): These models offered high efficiency with features like built-in temperature controllers. HE Series (High-Efficiency Non-Condensing):

 These were standard efficiency units, which in 2016 often used 1/2-inch gas line compatibility, such as the V65 or V75 series models. RUC Series: 2016 was a time when Rinnai highlighted models that offered flexible venting options, such as the RUC98i and RUC80i, which allowed for either PVC/CPVC or concentric venting. Key Characteristics of 2016 Models:

 Venting: SE and SE+ series supported either a single concentric vent pipe or two PVC/CPVC pipes for flexibility. Gas Type: Models were generally available in both natural gas and propane. Capacity: Ranged from smaller units suitable for 1-2 bathroom homes to larger 9.8 GPM (gallons per minute) units for larger homes. 

Efficiency: The SE+ models achieved high Uniform Energy Factors (UEF) around 0.93 to 0.96. Rinnai manufactured several tankless water heater models around 2017, including the RE140iN non-condensing unit. 

Other notable models available around this period included the high-efficiency RU98 and various models from the V-series and RU-series, which were common in that timeframe. 2017 Specific Model: The Rinnai RE140iN is directly cited as having a 2017 manufacturing year in some listings. Common Series from that Era: RU Models: RU160iN and RU199iN were high-efficiency condensing units offered during this time. V Series: V94iN non-condensing units.

 Identification: Rinnai serial numbers from this era start with a letter indicating the year, followed by the month. 

 The SENSEI™ RX series mentioned in search results represents newer, post-2020 technology. Rinnai tankless water heaters manufactured in 2017 are primarily identified by a "J" or "P" as the first letter of their serial number. 

One specific model explicitly listed as manufactured in 2017 is the Rinnai REU-VE1720FFD-US-N. Identifying 2017 Models by Serial Number Rinnai shifted to a letter-code system for manufacturing dates in late 2009. 

To confirm if a unit was produced in 2017, check the first letter of the serial number:

 the letter J represents the year 2017 in Rinnai's standard serial number coding. "P": Alternative charts from sources  P as the code for 2017. 

Numeric Code: Some older formats or specific regions might use the first two digits to represent the year; in this case, a 2017 model would begin with 17. 

 Common Product Series in 2017 While specific 2017 manufacturing dates apply to individual units, Rinnai's active product lines during that year included the following: Rinnai Non-Condensing Natural Gas Tankless Water Heater (Model REU-VE1720FFD-US-N): 

 Rinnai RL Series: A popular non-condensing line (e.g., RL94i) that was widely available and manufactured during this period. Rinnai RU Series (Luxury/Condensing): These high-efficiency units were a staple of Rinnai's 2017 inventory before the introduction of the newer SENSEI RX series. Rinnai V Series In 2018, Rinnai launched its next-generation SENSEI™ Series of condensing tankless water heaters. 

These models were specifically designed for easier installation and improved performance in the North American market. SENSEI Series Models (Launched 2018) The SENSEI series represents the core of Rinnai's 2018 product line, featuring both internal (i) and external (e) units for Natural Gas (N) or Propane (P). Rinnai RU199i / RU199e: According to Rinnai, these are top-tier Super High Efficiency units delivering up to 11 gallons per minute (GPM) with 199,000 BTU. Rinnai RU180i / RU180e:

 These models offer a mid-range flow rate of approximately 10 GPM. Rinnai RU160i / RU160e: According to product specifications from Rinnai, these units provide 9 GPM with a 160,000 BTU heating capacity. Rinnai RU130i / RU130e: These are entry-level condensing models in the SENSEI line, offering approximately 7 GPM. Rinnai RUR199i / RUR199e:

 These models feature integrated recirculation pumps, with the "i" indicating indoor and the "e" indicating outdoor installation. Identifying a 2018 Manufacture Date You can verify if a specific unit was manufactured in 2018 by checking the serial number on the rating plate. First Letter: For units built after 2009, the first letter represents the year. The letter "K" corresponds to 2018. 

Second Letter: The second letter represents the month. For example, "D" is April, so a serial number starting with "KD" indicates a manufacture date of April 2018 In 2019, Rinnai was transitioning between product generations, with the RU Series (Sensei) and V Series (Value) being prominent in the market. The RU series introduced significant improvements in venting and installation flexibility (Versa Vent). Based on 2019 market availability and manufacturing, the following models were common: Rinnai Sensei (RU) Series These units are high-efficiency condensing tankless water heaters: RU199iN / RU199eP: 199,000 BTU, 11 GPM (Indoor/Outdoor) RU180iN / RU180eP: 180,000 BTU, 10 GPM (Indoor/Outdoor) RU160iN / RU160eP: 160,000 BTU, 9 GPM (Indoor/Outdoor) Rinnai V Series (Value) These are non-condensing units, ideal for smaller, warmer-climate homes: V75eN / V75eP: 7.5 GPM, 180,000 BTU V65iN / V65iP: 6.6 GPM (Interior mount) V53DeN / V53DeP: 5.3 GPM (Outdoor mount) Key 2019 Features Versa Vent: Introduced to allow for multiple venting options (concentrically or through PVC/CPVC). Endless Hot Water: All models featured on-demand technology, providing continuous hot water. Compact Design: Designed to take up the space of a small suitcase. Based on Rinnai's product, the primary, high-efficiency condensing tankless water heater models that were prominently featured around 2020-2021 are part of the SENSEI™ RX Series (often manufactured in 2021, but launched to succeed earlier models around that time) and the RU/RUCS Series.

 These units are known for their compact design, "Versa Vent" technology for flexible installation (indoor or outdoor), and "Smart Sense" technology, which allows for, in some cases, both natural gas and propane use without a conversion kit. Key Rinnai Tankless Models (Around 2020-2021 Era) SENSEI™ RXP199iN (Condensing): 

A 199,000 BTU, 11.1 GPM unit, often featuring a built-in pump and Smart-Circ™ technology. SENSEI™ RX199iN (Condensing): A 199,000 BTU, 11.1 GPM model, similar to the RXP199 but often without the built-in pump. SENSEI™ RX160iN (Condensing): A 160,000 BTU, 9.0 GPM model. SENSEI™ RX130iN (Condensing): A 130,000 BTU, 7.1 GPM model. RU199iN/iP (Condensing): Part of the Super High-Efficiency Plus series, offering 11.0 GPM. RU160iN/iP (Condensing): A 9.0 GPM version in the RU series. RUCS Series (Condensing): Residential condensing units designed for tight spaces. Key Features of 2020-2021 Models Smart-Circ™ Intelligent Recirculation™: Learns usage patterns to ensure hot water is available. Versa Vent™: Allows for 2-inch venting with multiple installation options. Quick Flush™:

 A system that simplifies maintenance. Energy Efficiency: These models typically offer high Uniform Energy Factors (UEF) ranging from 0.93 to 0.98. Note: While 2020 Several Rinnai tankless water heater models from the SENSEI RX Series and RU Series are listed with a 2021 manufacture year. These units feature advanced condensing technology, smart connectivity, and versatile venting options. SENSEI RX Series Models (2021) The RX series includes high-efficiency condensing models that intuitively adapt to hot water schedules. 

 Rinnai SENSEI RXP199iN Condensing Tankless Water Heater Specifications: Features a built-in pump and Smart-Circ Intelligent Recirculation.

 It offers a maximum flow rate of 11.1 GPM and a heating capacity of 199,000 BTU. Features: Includes a 0.98 Uniform Energy Factor (UEF) and is compatible with both natural gas and propane. 

Rinnai SENSEI RXP160iN Condensing Tankless Water Heater Specifications: Listed with a 2021 manufacture year on major retailer sites like Wayfair Canada and Home Depot Canada. Performance: Delivers up to 9.0 GPM with a 0.97 UEF and includes a built-in recirculation pump. 

Rinnai SENSEI RX180iN Condensing Tankless Water Heater Details: 

 this model specifically carries a 2021 manufacture year. Capabilities: Provides up to 10 GPM and 180,000 BTU using the Smart Sense gas control system.

 Rinnai SENSEI RX160iN Condensing Tankless Water Heater Description: A compact, suitcase-sized model designed for indoor or outdoor installation. Efficiency: Features a 0.95 UEF and 160,000 BTU capacity. Rinnai SENSEI RX130iN Condensing Tankless Water Heater Performance: Offers a lower-range capacity of 130,000 BTU and a 7.1 GPM flow rate, suitable for smaller homes. In 2022, Rinnai introduced several new, high-efficiency tankless water heater models, focusing on the launch of the SENSEI™ RX Series (condensing) and the RE Series (non-condensing), which featured updated technology like Smart-Circ™ Intelligent Recirculation and Versa Vent™.

 Key models manufactured/launched in 2022 include: 1. SENSEI RX Series (Condensing - Launched June/July 2022)

 These models are designed for high efficiency (up to 0.98 UEF) and feature a compact, suitcase-sized design for easier installation. RX199iN/iP: 199,000 BTU, up to 11.1 GPM (Indoor/Outdoor). 

RXP199iN/iP: 199,000 BTU, includes a built-in pump and Smart-Circ™ Intelligent Recirculation. RX160iN/iP: 160,000 BTU, up to 9.0 GPM. RXP160iN/iP: 160,000 BTU, includes a built-in pump. RX130iN/iP: 130,000 BTU, up to 7.1 GPM. 2. RE Series (Non-Condensing - Launched August 2022) Announced in August 2022, this series was aimed at upgrading the non-condensing market with enhanced serviceability and installation features. RE160iN/iP: 160,000 BTU. 

RE180iN/iP: 180,000 BTU. RE199iN/iP: 199,000 BTU. REP199iN/iP: Feature built-in pumps for recirculation. 3. Other 2022 Models RSC160iP/iN: Part of the Smart-Circ™ Condensing series launched around June 2022, designed to replace older RUR models. I-SERIES Plus (IP120199C): A combi boiler model designed for home heating and domestic hot water, featuring a 120,000 BTU (CH) / 199,000 BTU (DHW) capacity. Key 2022 Features Versa Vent™: Allowed for easier, faster, and more flexible venting options. Smart-Circ™: 

Intelligent recirculation technology that learns user habits. Quick Flush: A feature added for easier maintenance. 

 In 2023, Rinnai continued to produce and update its SENSEI™ RX Series (introduced as next-generation condensing units) and the RE Series of tankless water heaters. 

These models were highlighted for their high efficiency (up to 0.98 UEF), compact design, and smart features. Key Rinnai tankless models associated with 2023, or noted as manufactured in that year, include: SENSEI™ RX Series (Condensing) RXP199iN/iP: High-efficiency, 199,000 BTU, with built-in recirculation pump. RXP160iN/iP: High-efficiency, 160,000 BTU, with built-in recirculation pump. RX199iN/iP: 199,000 BTU, with standard capability (no pump). RX130iN/iP: 130,000 BTU, compact model. Key Features of 2023 Models Smart Sense™: 

Automatically adjusts to either Natural Gas or Propane, eliminating the need for a separate conversion kit. Versa Vent™: 

Allows for flexible indoor/outdoor installation, including 2-inch venting options. Smart Circ™: Intelligent recirculation technology that learns user habits. Efficiency: Models in the SENSEI RX series offer up to 0.98 UEF (Uniform Energy Factor). Other Models RUR160iP/iN: SENSEI™ SE+ Series (Condensing with recirculation). RU130iP/iN: SENSEI™ Condensing models. In 2024, Rinnai launched a new, updated lineup of their SENSEI RX Series condensing tankless water heaters.

 These units feature "facelift" improvements, including a 10 lb lighter design, enhanced efficiency (up to 98% UEF), and the new Smart Sense technology. Key models available in 2024 include: SENSEI RX Series (2024 Models) These models are designed for easier installation with a 4:1 SKU reduction (meaning one unit can often handle multiple installation types) and Smart Circ™ Intelligent Recirculation. RX130iN/e: 130,000 BTU, 7.1 GPM max flow rate, ~0.97 UEF. RX160iN/e: 160,000 BTU, ~9.0 GPM max flow rate, ~0.97 UEF. RX199iN/e: 199,000 BTU, 11.1 GPM max flow rate, ~0.98 UEF. Note: The "i" stands for Indoor, and "e" stands for External (Outdoor). 2024 New Features & Technical Details Smart Sense Technology: 

Allows for switching between Natural Gas and Propane through a parameter change during installation, eliminating the need to change an orifice. Versa Vent: Allows for flexible indoor/outdoor installation with simple adaptation. Rinnai Central App: Connects via Bluetooth for faster setup, parameter adjustment, and registration. Quick Flush: A feature for simplified maintenance. High Altitude Approval: Up to 10,200 ft. Other 2024 Product Offerings REHP Series: A new electric heat pump water heater with up to 4.0 UEF. I-SERIES Plus: New wall-hung condensing gas boilers. Rinnai Non-Condensing Units: Currently 100% manufactured and designed in Peach Tree City, Georgia, with a goal of full line, including condensation units, to be manufactured in the USA by 2026. These new 2024 units are typically found with 5-year labor and 180-month (15-year) heat exchanger warranties, which are double the industry standard. For 2025, Rinnai’s premier tankless lineup is the SENSEI® RX Series, featuring up to 0.98 UEF efficiency, Smart-Circ™ Intelligent Recirculation™, and Smart Sense™ adaptive gas valve technology. Key models include the RXP (with built-in pump) and RX, designed for easier installation, faster serviceability, and, in select models like RE160i and RU199i, 25% Hydrogen blend compatibility. 

 Key 2025 Rinnai Tankless Models & Features SENSEI® RX Series (Condensing): The flagship, high-efficiency models. RXP Models: Include built-in pump and Smart-Circ™ technology. RX Models: Feature Versa Vent™ for flexible, quick installation. 

Key 2025 Features: Efficiency: Up to 0.98 UEF. Technology: Smart Sense™ adaptive gas valve (no conversion kit needed for NG/LP). Connectivity: Smart Connect™ app for smartphone setup and monitoring. 

Sustainability: Select models (RE160i, RU199i) are UL-Verified for 25% Hydrogen blend. New Additions: The RU Series is being replaced by the RX Series for improved, ultra-high efficiency.

 Other 2025 Rinnai Offerings REHP Series: Electric Heat Pump Water Heaters with 4.0 UEF and whisper-quiet operation.

 I-SERIES Plus: Combi Boilers that provide space heating and hot water, featuring similar tech to the SENSEI RX. 

 Find related products & services Best tankless water heater Canada Rinnai tankless water heater installation cost Rinnai R75LSi replacement Rinnai tankless water heater price canada. Rinnai service repair installation   Canada Rinnai RX199iN price Rinnai Tankless water heater service near me Rinnai service dealers  Canada Rinnai tankless water heater service Rinnai tankless water heater cost Rinnai tankless water heater flush kit, Rinnai tankless water heater beeping ,Rinnai tankless cold troubleshooting, Rinnai tankless cold not working, Rinnai freeze protection kit ,Rinnai tankless water heater ,Rinnai tankless cold water sandwich Rinnai freeze protection kit installation, Why does my tankless water heater go cold in the middle of a shower.

 Rinnai tankless water heater goes cold after a few minutes Common Error Codes & Meanings Code 10 (Air Supply/Exhaust Blocked):

 Venting issues, obstruction, or poor airflow. 

Code 11 (Ignition Failure): Problems lighting the burner. 

Code 12 (Flame Failure): Burner won't stay lit after ignition. 

Code 14 (Thermal Fuse): Overheating protection activated. 

Code 16 (Over Temp Warning): Unit is too hot. 

Code 25 (Inlet Temp Sensor): Problem with the water temperature sensor.

 Code 29 (Outlet Temp Sensor): Problem with the outlet water sensor. 

Code 31 (Airflow/Venting): Similar to Code 10, indicates airflow issue.

 Code 61 (Combustion Fan Failure): Fan not operating correctly. 

Code 63 (Gas Lockout): Gas supply issue after multiple failed ignitions.

 Code 65 (Water Flow Control): Water flow valve fault. Code LC (Lime Scale): Mineral buildup in the heat exchanger (common in hard water areas). Homepros heating and air conditioning service and repair of tankless hot water systems.