Jan 4, 2023 · Updated on January 4, 2023. Navien Tankless Water Heater Review: Products, Problems & Comparisons 3. Tankless water heaters have evolved dramatically over the years. They are more readily available, offer more cost-saving benefits, and have a smaller physical and carbon footprint than tank-style water heaters. NPE-210A2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs. Vent Installation Detector (VID) for added safety.Southern California homeowners can receive up to $1,500 rebate through SoCalGas® when they purchase and install any Navien NPE series or NPN Series tankless water heater to replace a conventional tank-type water heater in a single family residence between September 1, 2020 and December 31, 2020.Learn more about Navien's high efficiency residential condensing boilers. Save time, space and money when you upgrade to a Navien boiler heating system. ... High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. Ultra-high efficiency condensing tankless water heaters > …Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. ... High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. Ultra-high efficiency condensing tankless water heatersPeakFlow A. This advanced water treatment system is not only chemical-free and anti-scaling but has higher flow rates up to 10 gpm for residential or commercial, point of entry and point of use applications. Named a 2022 Sustainable Product …NPE-210S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.Navien...the proven leader in condensing tankless, makes it even easier to sell, install and set up with new NPE-2 series condensing tankless water heaters. ...I dont know the age it was here when we bought the house 3 years ago. ... I have a Navien NPE-240A tankless water heater outside. I had it shut down during the freezing weather here in Texas for the past few days. ... I have a Navien water heater, it has been over two years. Hi, I have a Navien water heater , it has been over two years. …Noritz vs Rinnai tankless water heater comparison. ... The water heaters themselves usually last even longer than that, it’s not rare to see them reach the age of 15 with proper care given to them. ... The statistics show that 1/5 Navien tankless water heaters will face significant problems during this period of time which affects the item ...Maintenance And Troubleshooting Regular maintenance is crucial for the optimal performance of your navien tankless water heater. Neglecting maintenance can lead to various issues. To keep your tankless water heater in top shape, follow a maintenance checklist.To obtain warranty repair service, the end user or homeower must contact the original installer of your Navien product. If the original installer cannot be identified, the end user or homeowner may contact Navien's Technical Administration Department at (800) 519-8794. Proof of purchase is required to obtain warranty service.Last Updated: June 10, 2023 Less known than some top names in the water heater industry, Navien is nonetheless an important global brand. Navien is an excellent choice …Performance – Conveniently Good. The average efficiency rating of Rinnai tankless water heaters is around 82 to 98%, working on 120,000-199,000 BTUs. If you check online offers, you’ll notice the manufacturer guaranteeing that these heaters are capable of supplying four showers simultaneously.Advanced condensing tankless water heaters featuring Navien’s patented ComfortFlow® system. ComfortFlow® includes a buffer tank, recirculation pump and fine-tuned controls which resolve the “cold water sandwich” effect and flow rate issues common in other tankless water heaters. NPE-180A2. Max Input: 150,000 BTU/h.Since 2006, Navien, Inc. has become one of the fastest growing companies in the home comfort sector in North America and is now a leader in condensing technology, providing condensing tankless water heaters, combi-boilers, and boilers.*. Navien's products possess state-of-the-art technology, high efficiency and reliable quality. Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien CR & CC Series condensing tankless water heaters.NPE-180S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety. Dual Venturi for field gas conversions.Jul 26, 2022 · Image via: Pixabay. Most Navien tankless water heater units cost between $1000 and 1500 dollars. These prices are primarily for new units and refer to the cost of the tankless water heaters themselves. Installation, which is often a necessary cost with tankless water heaters, can be between $500 and $1500 itself. Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien NCB-240E condensing combi-boilers.Overview Condensing heating boilers > NFB‑H Series > NHB Series Water Treatment Protect your water supply and your water heating equipment with eco-friendly water treatment solutions. Overview Scale Prevention Systems > PeakFlow ® Series Tankless Water Heaters NEW NPE-A2 Series Models Warranty Where to buy Credits & Rebates Downloads FAQsDec 20, 2018 · This recall involves only Navien condensing tankless water heaters and combination boilers with model numbers NPE-180A, NPE-180S and NCB-180E that have been or will be converted from using natural gas to propane gas. The recalled water heaters and combination boilers were manufactured between July 9, 2018 through October 14, 2018. NPE-180S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.First up is the EcoSmart ECO 27 tankless water heater. It makes the top of our list for its $437price tag and 92,128 BTUs of heating capacity at 99% efficiency.EcoSmart is a trusted name for pool ...How We Test Water Heaters. Consumer Reports recently tested several electric and gas whole-house tankless water heaters from brands such as Bosch, Navien, Noritz, Rheem, Rinnai, Tempra, and ...This innovative accessory will make cascading up to 16 units in 2 banks of 8 easy for emergency same day replacements. The kits are configures in 2, 3, and 4 side-by-side and 2, 4 back- to-back allowing for up to 16 units in 30 configurations. Each kit includes: * 3/4” Service Valves with PRV * 3/4” NPT Ball Valve * 2” Copper End Cap * 2 ...Overview Tankless Water Heaters High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview Ultra-high efficiency condensing tankless water heaters > NPE‑A2 Series > NPE‑S2 Series High efficiency non-condensing tankless water heatersOverview Tankless Water Heaters High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview Ultra …Navien products are backed by a limited warranty that covers labor, parts and the heat exchanger. For more details, select a product using the menu above, call 1-800-519-8794 for customer service, or start a live chat. Find warranty information for Navien tankless water heaters including warranty period, service & return policy, claim ...They’re also smaller than condensing models, and need minimal maintenance. Non-condensing tankless water heaters have an efficiency rating of 0.81 UEF, which is much more efficient than traditional storage tank water heaters. Condensing tankless water heaters offer an ultra-high efficiency rating of up to 0.96 UEF, as well as higher flow rates.NPE-180S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.Mr. Reitter and a friend had installed the Navien tankless water heater, which requires conversion from natural gas to propane, on Dec. 15, 2018.NPN-160U premium features and benefits. Exclusive stainless steel heat exchanger. The NPN series is the first and only non condensing tankless water heater with a stainless steel heat exchanger to deliver unmatched durability and performance. NPN - Universal integrated control panel allows you to adjust water temperature, operation status and ...Navien can help you decide which model is right for you based on where you live and the information you provide. This is intended as a guide only. It is up to the contractor or engineer to determine the right model(s), components, accessories and particular system being installed. The Energy Star label is given to a product that operates significantly more efficiently than its counterparts while maintaining or improving performance. Navien's Energy Star Qualified Tankless Water Heaters are one of the best choices for saving money while saving the environment. Find if your local utility company offers a rebate in your area.Dec 16, 2014 · For more information visit Navien.com. www.navieninc.com. Contact: Ann Woodard, Marketing Manager. [email protected]. P: 949-420-0420 x132. D: 949-420-0314. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien NPE-240A condensing tankless water heaters.NFB-200H premium features and benefits. 2" venting up to 65'; 3” up to 150’ (including schedule 40 PVC). Vent Installation Detector (VID) for added safety. Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.Navien Manuals; Water Heater; NR-180; Navien NR-180 Manuals Manuals and User Guides for Navien NR-180. We have 5 Navien NR-180 manuals available for free PDF download: Service Manual, Operation & Installation Manual, Installation Manual, Quick Installation Manual Performance – Conveniently Good. The average efficiency rating of Rinnai tankless water heaters is around 82 to 98%, working on 120,000-199,000 BTUs. If you check online offers, you’ll notice the manufacturer guaranteeing that these heaters are capable of supplying four showers simultaneously.NPE-180S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.Water Heater Age: The general lifespan of a water heater is 8-12 years. This is why it is important to determine the age of your water heater and it is recommended to replace your water heater before its 12th birthday. History: Have you had trouble with your water or even repair work done. These are important factors when considering a ... Pull the filter out of the water heater. Remove the filter from the plastic assembly and clean it with a toothbrush, and clean running water. Allow the filter to dry completely. Reinsert the filter into the plastic assembly. Place the filter assembly back into the water heater and secure it with the screw.Navien PeakFlow Series. Watch on. Navien PeakFlow systems have been protecting Navien tankless water heaters and combi boilers from damaging lime/ calcium deposits in their products for many years. This advanced technology is now available to protect your complete water supply system for residential and commercial applications. DHW piping. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. ... High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. Ultra-high efficiency condensing tankless water heatersNPE-210S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.Discover the Secret to a Long-Lasting Navien Tankless Water Heater! 🚿🔥 | Find out how to maximize the lifespan of your Navien tankless water heater and enj...a global leader in high efficiency water heaters and boilers. Whether you need an endless supply of hot water, efficient home heating or both, Navien has the perfect energy efficient solutions. Navien offers the industry’s most advanced condensing tankless water heaters, condensing boilers and the first combi-boilers strong enough to support ... NHW-A Series features: High efficiency up to .81 UEF and up to 9.5 GPM @35° temp rise. NHW-AE (exterior) and NHW-AI (universal interior) models. Patented built-in ComfortFlow system with buffer tank, recirculation pump & fine-tuned controls. Patented NaviTech™ stainless steel heat exchanger and stainless steel burner with lean/rich stable ... High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. ... Navien Condensing Boiler Domestic Hot Water Ratings; Model 1 NCB-250/150H; Input Ratings: Min: 14,000 BTU/h (4.1 kWh) Max: 210,000 BTU/h (61.5 kWh)Tankless water heaters can save you money on your energy bill, and they can also have a longer lifespan than traditional water heaters. How long do Navien tankless water heaters last? Navien tankless water heaters have a lifespan of up to 20 years.Product Downloads > NPE Installation & Operation Manual. Download file. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment.The typical life expectancy is 10-15 years. “According to the manufacturer, the life expectancy of a hot water tank is eight to 10 years,” says Dan Odyl, Plumbing Manager for Blind & Sons. “Knowing the age will give the homeowner an idea on when to start thinking of replacement or at least to start keeping an eye on it.”. The manufacture date may also be stated after the serial number. Starting in late 2009, it was switched to a letter-code, with first letter of the serial number being the year and the second letter the month of manufacture. A = 2009 or January, B = 2010 or February, C = 2011 or March. D = 2012 or April, E = 2013 or May, F = 2014 or June.NFB-200H premium features and benefits. 2" venting up to 65'; 3” up to 150’ (including schedule 40 PVC). Vent Installation Detector (VID) for added safety. Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.Our 14 year-old Rheem tankless water heater recently failed due to the control board failing. Because of its age, the control board was no longer available and therefore the unit could not be repaired. A friend, who is a builder, said, "I didn't realize Rheem was in the tankless water heater market. We always put Rinnain tankless …Tankless water heaters, also known as on-demand or instant water heaters, have many advantages over traditional tank-style water heaters and can be an excellent long-term investment. ... Very happy with our Navien tankless water heat in a 80 year old, 3 story home (HWH in basement) for a family of 3. ...Because tankless water heaters are more efficient than tank units, Navien puts their energy into developing the best quality tankless models on the market. Their high-efficiency, money-saving water heaters in the NPE-A Series, NPE-S Series, NPN-U Series, and NPN-E Series all keep the homeowner in mind.Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. ... High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. Ultra-high efficiency condensing tankless water heatersI am facing the prospect of replacing my New Coke/"We Are The World"-era Vaillant gas boiler and my stand-alone water heater. One quote suggests a Navien NCB-E unit and the other suggests an IBC DC 20-125. Can anyone compare these two? ... honestly if they have a tankless coil type or flat plate heat exchanger you will need to flush them if ...NPE-240S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.Notices. Navien Recalls Tankless Water Heaters models CR and CC. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment.High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. ... Navien Condensing Boiler Domestic Hot Water Ratings; Model 1 NCB-250/150H; Input Ratings: Min: 14,000 BTU/h (4.1 kWh) Max: 210,000 BTU/h (61.5 kWh)NPE-240A2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs. Vent Installation Detector (VID) for added safety.Homemade Solar Water Heaters - Homemade solar water heaters can help you save money for more important matters. Visit HowStuffWorks to learn all about homemade solar water heaters. Advertisement Building a solar water heater isn't exactly f...Navien is best known as a leader in the tankless water heater market. The technology for boilers is similar, so making tankless Navien boilers is a natural fit for the company. ... The NCB-E Series is four models. The first number is MBH for heat-only. The second number is for domestic hot water (DHW): 60 MBH/120 MBH, 80 MBH/150 MBH, …NPE-180A2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs. Vent Installation Detector (VID) for added safety.NHW-A Series features: High efficiency up to .81 UEF and up to 9.5 GPM @35° temp rise. NHW-AE (exterior) and NHW-AI (universal interior) models. Patented built-in ComfortFlow system with buffer tank, recirculation pump & fine-tuned controls. Patented NaviTech™ stainless steel heat exchanger and stainless steel burner with lean/rich stable ...Maintenance And Troubleshooting Regular maintenance is crucial for the optimal performance of your navien tankless water heater. Neglecting maintenance can lead to various issues. To keep your tankless water heater in top shape, follow a maintenance checklist.Overview Tankless Water Heaters High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview Ultra-high efficiency condensing tankless water heaters > NPE‑A2 Series > NPE‑S2 Series High efficiency non-condensing tankless water heaters½” gas pipe can be used when installing a NPE-2 condensing gas tankless water heater as long as it is sized appropriately. Pipe size, length of gas pipe, and pressure drop are all factors that affect gas delivery. Please refer to the National Fuel Gas Code gas pipe sizing table to ensure you have sufficient gas supply for the unit.31-365 days after purchase: Accessories installed for 31 days up to one year will require a Returned Goods Authorization (RGA) obtained by Navien’s technical support team at 800-519-8794, option 2. An RGA number will be issued for shipping a replacement part or wholesaler pick up.AFUE 95% Energy Star certified. Backed by the industry’s strongest warranty—10 years on heat exchangers. Takes less space than floor standing boiler and tank water heater. Can be cascaded with Navien NPE-2 tankless water heaters for increased DHW flow demand. Easy to use control panel. Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien NPE-240A condensing tankless water heaters. Tankless Water Heaters (228) 228 Products Tankless Water Heaters There are no matching search results. Brand Filter Brands Close ... Navien NPE-A2 Series 199 MBH Indoor/Outdoor Condensing Natural Gas Tankless Water Heater. Quick View ...Updated on January 4, 2023. Navien Tankless Water Heater Review: Products, Problems & Comparisons 3. Tankless water heaters have evolved dramatically over the years. They are more readily available, offer more cost-saving benefits, and have a smaller physical and carbon footprint than tank-style water heaters.NPN-160U premium features and benefits. Exclusive stainless steel heat exchanger. The NPN series is the first and only non condensing tankless water heater with a stainless steel heat exchanger to deliver unmatched durability and performance. NPN - Universal integrated control panel allows you to adjust water temperature, operation status and ...Navien products are backed by a limited warranty that covers labor, parts and the heat exchanger. For more details, select a product using the menu above, call 1-800-519-8794 for customer service, or start a live chat. Find warranty service & return policy information for any Navien tankless water heater, boiler or combi-boiler. I am facing the prospect of replacing my New Coke/"We Are The World"-era Vaillant gas boiler and my stand-alone water heater. One quote suggests a Navien NCB-E unit and the other suggests an IBC DC 20-125. Can anyone compare these two? ... honestly if they have a tankless coil type or flat plate heat exchanger you will need to flush them if ...Now I do feel that Navien is probably the best tankless heater on the market, except after yearly maintaince you basically break even on savings.... . At least in the mid west a 75 gallon Rheem tank type heater with an 8 year warranty will go in for about 2500.... with no follow up maintaince needed... A 50 gallon rheem unit will runNavien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Where to …NPE-180S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.This article discusses how to identify the age of your water heater. Water Heaters USA AO Smith. ... The year of production for Navien water heaters gets recorded within the serial numbers. 7777XYY77777777 (Fifth and Sixth digits following an alphabet of serial numbers refer to the year of production) ... Tankless YY.77-777777 (First and …If you’re considering upgrading your water heating system, you may have come across tankless water heaters as an option. These innovative appliances have gained popularity in recent years due to their energy efficiency and space-saving desi...NHB-55 premium features and benefits. 2" venting up to 65'; 3” up to 150’ (including schedule 40 PVC). The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses. The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.CANADIAN DEALS! RINNAI TANKLESS - Prices have dropped and there are decent deals to be had now!. Our prices verses the exact same model at Homedepot.ca . RUR199iN - $2,899 - Nat Gas Compare at $3853 - SAVE $954; RUR199iP - $2,950 - Propane Compare at $3777 - SAVE $827 -- OUT OF STOCK ; RU199iN - $2,550 - Nat Gas Compare at …Navien's technological innovations make our condensing boilers the best choice for commercial applications. Building owners or property managers appreciate the efficiency, reliability and durability of Navien condensing boilers over older, less efficient systems. Architects and engineers like the space saving design, flexibility in configurations.One of the critical things you need to know in order to properly size a tankless water heater is the temperature rise. If the incoming water is 50°F and you have your tankless set to heat the water to 110°F, the temperature rise will be 60°F. If you live in the Northern Region the ground temperature is much cooler than in the Southern Region.
NPE-180S2 premium features and benefits. 2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.. What time is sunset in march
Discover the Secret to a Long-Lasting Navien Tankless Water Heater! 🚿🔥 | Find out how to maximize the lifespan of your Navien tankless water heater and enj...Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien NPE-240A condensing tankless water heaters.Sep 17, 2019 · The brand of tankless water heaters that we carry is Navien. Navien tankless water heaters are energy star rated, which saves energy and money in the long run. These tankless water heaters can also be paired with the RG&E rebate that can save you $200! They also have a sleek look to them and are 80% smaller than traditional tank water heaters. Noritz vs Rinnai tankless water heater comparison. ... The water heaters themselves usually last even longer than that, it’s not rare to see them reach the age of 15 with proper care given to them. ... The statistics show that 1/5 Navien tankless water heaters will face significant problems during this period of time which affects the item ...Last Updated: June 10, 2023 Less known than some top names in the water heater industry, Navien is nonetheless an important global brand. Navien is an excellent choice …High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. Ultra-high efficiency condensing tankless water heaters ... Compatible with the Navien HotButton Kit for demand-type recirculation systems; NaviCirc Kit (30022965A) includes the NaviCirc recirculation valve (PFFW-SXX-001 ...Overview Tankless Water Heaters High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview Ultra …Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien NPE-240A condensing tankless water heaters.Navien PeakFlow Series. Watch on. Navien PeakFlow systems have been protecting Navien tankless water heaters and combi boilers from damaging lime/ calcium deposits in their products for many years. This advanced technology is now available to protect your complete water supply system for residential and commercial applications. DHW piping.High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview. Ultra-high efficiency condensing tankless water …Overview Tankless Water Heaters High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. Overview Ultra-high efficiency condensing tankless water heaters > NPE‑A2 Series > NPE‑S2 Series High efficiency non-condensing tankless water heatersIf you’re considering an upgrade to your home’s hot water system, you may be wondering whether switching to a tankless water heater is worth it. While there are some definite advantages to going tankless, there are also a few drawbacks that...Navien Premium Efficiency condensing tankless water heaters are the #1 selling high efficiency condensing tankless water heaters in North America. The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow® technology with a built-in recirculation pump and buffer tank. Navien Premium Efficiency condensing tankless water heaters are the #1 selling high efficiency condensing tankless water heaters in North America. The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow® technology with a built-in recirculation pump and buffer tank.Our 14 year-old Rheem tankless water heater recently failed due to the control board failing. Because of its age, the control board was no longer available and therefore the unit could not be repaired. A friend, who is a builder, said, "I didn't realize Rheem was in the tankless water heater market. We always put Rinnain tankless …Navien products are backed by a limited warranty that covers labor, parts and the heat exchanger. For more details, select a product using the menu above, call 1-800-519-8794 for customer service, or start a live chat. Find warranty service & return policy information for any Navien tankless water heater, boiler or combi-boiler.Find brochures, manuals, guides, labels, specs, drawings, revits & certificates for Navien NPE-240A condensing tankless water heaters..