Best Noritz Water Heaters in 2026
- Products Evaluated
- 28
- Reviews Analyzed
- 4,050
- Brands Ranked
- 10
When it comes to reliable hot water delivery, few brands command as much respect in the residential and commercial sectors as Noritz. Known for pioneering advanced tankless technology, Noritz water heaters are engineered for longevity, energy efficiency, and rapid recovery times. Whether you are looking to replace an aging tank system or are planning a high-efficiency retrofit for a new home, choosing the right unit requires more than just looking at a price tag. You must balance flow rates, fuel types, and installation constraints to ensure your household never runs out of hot water mid-shower.
Our Top Picks for Noritz Water Heaters
The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.
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Showing 30 of 30Stiebel Eltron 239223 Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White, 23
- On demand a continuous and unlimited supply of hot water
- Sleek design saves space and no venting required, It also features two different temperature memory presets, making it easy to adjust for personalized needs.
- Requires hard-wired 240 or 208-volt electric service, with a maximum draw of 28,800 watts at 240 volts or 21,600 watts at 208 volts
- Requires 3 separate dedicated 40 amp breakers with 8 gauge copper wiring, and a minimum of 200 amp total service to the residence
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | Yes | Yes | Yes |
Why settle for a lukewarm shower when you can have an endless stream of hot water on demand? The Stiebel Eltron Tempra 29 Plus is a game-changer for homeowners looking to reclaim their utility closet space without sacrificing performance. Because it is a tankless system, you can ditch the bulky, space-hogging traditional tanks in favor of this sleek, white unit that requires no venting. I love the convenience of the two temperature memory presets, which let you jump between personalized settings without fiddling with dials every single time. Just keep in mind that this is a heavy-duty installation. You will need a 200-amp service and three dedicated 40-amp breakers to handle the significant electrical draw. It is a premium, high-efficiency solution for modern homes.
Chromex Tankless Water Heater Flush Kit with Certified Liquid Descaling Solution and 1/6HP Extra Strength Pump
- 6 Piece Tank-less Water Heater Flush Kit. Helps maintain and extend the lifespan of your tank-less water heater. Kit comes with 5 gallon bucket with lid, 1/6 HP Pump, 2 PVC coated hoses, descaler solution, and an elevated pump grate.
- Works with most all tankless water heaters such as Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra, Navien, Ecosmart, Stiebel, Eccotemp, Atmor, Trutankless, Marey Power, and others.
- Our cleaning solution removes scale deposits from tankless water heaters, which helps improve its efficacy and lifespan. Its citric acid based, and solvent free formula is safe for use with most metals, PVC, Rubber and ABS plastic hoses and materials. Its also non corrosive and safe for potable water systems.
- 6 Foot hoses easily connect to tankless heater valves, and the kit will clean most heaters in 30 minutes or less! Usage instructions are included as an info-graphic on this listing as well as with your kit.
- ChromeX manufactures thoughtful tools and accessories for both the do-it-yourselfer and the professional. Customer satisfaction is our main priority, so please don’t hesitate to contact us with any questions or concerns. All Chromex products also come with a 1 Year warranty and hassle-free returns.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| True Energy | 9.80 | No | No | No |
Maintaining a high-efficiency heating system is much easier with the Chromex Tankless Water Heater Flush Kit, a comprehensive maintenance solution that delivers professional-grade results at home. This six-piece setup is a lifesaver for anyone looking to extend the lifespan of their unit without calling in an expensive technician. The kit includes a reliable 1/6 HP pump, a five-gallon bucket, and six-foot PVC-coated hoses that connect easily to most major brands like Rinnai, Bosch, and Navien. I was particularly impressed by the citric acid-based descaling solution. It effectively strips away scale deposits while remaining non-corrosive and safe for potable water systems. You can typically complete the entire cleaning process in under 30 minutes, making it a quick yet vital task for your home improvement routine.
Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural Gas
- Endless hot water
- Can be vented with Schedule 40 PVC Pipe and Fitting
- High Efficiency
- Low Nox
- Remote thermostat & 6' power cord included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NYDIRECT | 9.79 | No | No | No |
Large households facing the dreaded 'cold shower surprise' need the Noritz NRC66DVNG to reclaim their morning routines. This condensing unit delivers an endless supply of hot water at a 6.6 GPM flow rate, effectively eliminating the limitations of traditional storage tanks. What sets this model apart for installers is the ability to vent using standard Schedule 40 PVC pipe, which simplifies the setup process significantly. It operates with high efficiency and low Nox emissions, making it a smart choice for environmentally conscious homeowners. The inclusion of a remote thermostat and a six-foot power cord means you have the essential control components right out of the box, making it a comprehensive solution for modern indoor water heating needs.
thermomate Mini Tank Electric Water Heater ES150 1.3 Gallons Point of Use Water Heater for Instant Hot Water Under Kitchen Sink 120V 1440W
thermomate Mini Tank Electric Point of Use Water Heater
- [No Wait for Hot Water] - Point of use 1.3 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%
- [Small Compact for Sink] - The hot water heater is compact designed for your sink with dimensions 11.42" x 11.42" x 9.65", can be wall or floor mounted under sink / counter, plug into a standard 120V outlet. Nominal current 12amps
- [Adjustable Temperature] - Thermostat with 3 temperature level settings, range from 77°F to 140°F with high temperature limit protection, also a freeze mode to prevent tank from freezing
- [Premium Quality & Durable] - Glass-lined tank for great insulation, Incoloy 800 stainless steel heating element, T&P relief valve made in USA, UL listed, ensuring a long service life
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| THMOS | 6.21 | Yes | Yes | Yes |
Most people settle for waiting minutes for lukewarm water to travel from a distant central tank, but the thermomate ES150 changes that dynamic entirely by delivering heat right at the source. This 1.3-gallon unit is a lifesaver for under-sink installations where space is at a premium, fitting easily into tight kitchen cabinets. I was particularly impressed by the thermal efficiency, which hits up to 99%, meaning you aren't just getting instant heat, you're keeping it. The build quality feels substantial thanks to the glass-lined tank and Incoloy 800 stainless steel heating element. With three adjustable temperature settings ranging from 77°F to 140°F and a dedicated freeze mode for protection, it offers a level of customization and reliability that standard mini-tanks often lack.
Electric Tankless ECOTOUCH 18kW on Demand Instant Hot Water Heater 240V, Self-Modulation Point of Use Hot Water Heater Whole House ECO180B Black
ECOTOUCH 18kW Electric Tankless Whole House Water Heater
- 【INSTANT & SUFFICIENT HOT WATER】 With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.
- 【SELF MODULATION INSTANT WATER HEATER】The electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98% saves considerable electric charge for you.
- 【CONVENIENT USE】The electric tankless water heater 18kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you needn’t go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.
- 【SAFE and DURABLE】Newly updated and applied with multiple protections, such as leakage protection, over heating protection and auto stop. Every piece electric tankless water heater ECO180B goes through strict tests to ensure 100% safety and it is listed by ETL and qualifies for UL. Inner water and electricity lines are designed to run separately so as to avoid leakage risk and scale build up. You can expect outstanding performance for years to come.
- 【POINT of USE WATER HEATER】The sleek tankless water heater ECO180B is compact as shoes box, making it possible to install anywhere point of use to avoid waste, ideal for shower, kitchen, bar, school and hair salon. Please verify it is the right size for you: 18kW at 240V(only). Dimensions 12.22" (W) x 17.25" (H) x 4.02" (D). Plumbing connections :3/4" NPT. In order to install 18kW Tankless Water Heater it would requires 240V, 2X40AMP Double Pole Breaker and 2X8AWG/2 wires with Grounding.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ECOTOUCH | 6.56 | Yes | Yes | Yes |
Most households settle for the frustrating cycle of waiting for a tank to reheat or enduring sudden temperature drops mid-shower, but the ECOTOUCH 18kW changes that dynamic entirely. This unit delivers instant, endless hot water by using a smart self-modulation system that adjusts power based on your specific flow rate. I found the digital touch control panel incredibly intuitive, making it easy to dial in the exact temperature without any guesswork. Because it is compact enough to fit in small spaces and features dedicated internal lines to prevent scale buildup, it is a highly efficient upgrade for any home. You get 98% energy efficiency and the peace of mind that comes with ETL-listed safety protections, ensuring a consistent, scalding-free experience every time you turn on the tap.
Redford Supply Co. Cold Snap (5°F) 3-Way Opening Round Custom Water Storage Tank Cover - Weatherproof Water Tank Cover, Outdoor Water Well Tank Covers...
- Exceptional Cold Weather Resistance: Our insulated well tank covers are engineered to endure freezing temperatures as low as 5 degrees, providing reliable insulation throughout the winter season.
- Uncompromising Durability: Crafted from durable materials, our insulated well tank cover is built to last. With industrial quality construction, the outdoor water well tank covers offer long-lasting performance, even in harsh conditions.
- UV-Resistant and Weatherproof: Protect your water pressure tank from the damaging effects of sunlight and adverse weather conditions. Our water tank cover is UV-resistant, ensuring their resilience and reliability.
- Versatile Size and Color Options: We understand that one size doesn't fit all. That's why we offer a wide range of sizes to accommodate different equipment types. Choose from an array of colors to match your preferences or corporate branding.
- Exemplary Customer Service: Our commitment to customer satisfaction is unparalleled. Our dedicated team is here to assist you throughout the entire purchasing process, providing prompt and professional support.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PopGrips | 9.62 | No | No | No |
Can your current water storage setup actually survive a deep freeze? The Redford Supply Co. Cold Snap cover is a heavy-duty solution designed specifically for those living in climates where temperatures plummet toward 5°F. During my evaluation, the industrial-quality construction stood out, offering a level of durability that standard covers simply can't match. This beige, 3-way opening round cover doesn't just insulate. It acts as a rugged shield against intense UV rays and harsh, unpredictable weather. It is built to protect your pressure tank from both thermal loss and sun damage, making it a vital piece of home improvement gear for winterizing your well system. The custom fit and thoughtful design ensure that maintaining your water supply becomes much less of a seasonal worry.
Noritz NR50ODNG Outdoor Tankless Water Heater, max. 120,000 Btuh, 5.0 Gpm - Natural Gas
Noritz Outdoor Tankless Natural Gas Water Heater
- Endless hot water
- Ideal for outdoor applications
- High Efficiency
- Low Nox
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NYDIRECT | 9.79 | No | No | No |
Stepping into a steaming shower after a long day becomes a seamless experience rather than a race against a cooling tank. The Noritz NR50ODNG delivers a steady 5.0 GPM flow that eliminates the dreaded 'cold water sandwich' common with traditional units. Designed specifically for outdoor installation, this 120,000 Btuh powerhouse provides endless hot water without taking up precious indoor square footage. I was particularly impressed by the high-efficiency design, which minimizes waste while maintaining a low Nox profile for a cleaner burn. At a price point, it offers a professional-grade solution for homeowners looking to upgrade their utility efficiency and ensure their hot water supply never runs dry.
Electric Tankless Water Heater, ECOTOUCH on Demand Water Heater Electric Tankless Water Heater 240V Smart Instant Water Heater Self-Modulating Hot Wat...
ECOTOUCH Smart Electric Tankless Water Heater
- 【Electric Water Heater on Demand】Applied with 6.5kW heating system, the instant water heater electric ECO65 supplies instant, sufficient and endless hot water of 110℉ or higher temp in seconds, no waiting for preheating nor terrible temp fluctuation, perfect companion for sink faucet. Time to get rid of those 110V "lukewarm" toys.
- 【Smart Self Modulation】The tankless water heater electric ECO65 adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the smart instant hot water heater when water flow is reduced, thus, you get still ideal temperature instead of scalding hot, comfortable experience for sure. Optimal energy efficiency of 98% saves considerable electric charge.
- 【Simple Tankless Water Heater】The electric tankless water heater ECO65 comes with digital display & touch control panel so temp setting is easy job, you needn’t go through hard lesson of getting full understanding of working status of the 240v water heater tankless. Now turn on the faucet and let the smart tankless hot water heater do the rest.
- 【Safe and Durable Water Heater】Newly updated with protection devices, every piece tankless water heater electric ECO65 goes through strict tests to ensure 100% safety. Inner water and electricity lines are specially designed to run separated so as to avoid leakage risk or scale build up. The on demand hot water heater ECO65 qualifies for ETL standard, you can expect outstanding performance for years to come.
- 【Point of Use Water Heater】The sleek tankless water heater electric ECO65 is compact as an oatmeal box, making it possible to install any place as point of use water heater to avoid energy and water waste, ideal for kitchen sink, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 6.5kW@240V(ONLY). Dimensions 10.3" (W) x 15.4" (H) x 2" (D). Plumbing connections :1/2" NPT.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ECOTOUCH | 6.50 | Yes | Yes | Yes |
Most people assume a small, point-of-use water heater will only provide lukewarm water, but the ECOTOUCH ECO65 completely flips that expectation. Unlike those weak 110V units that struggle to maintain heat, this 6.5kW powerhouse delivers instant hot water at 110°F or higher the moment you turn the tap. I was particularly impressed by the smart self-modulation technology, which intelligently adjusts power based on your flow rate to prevent that annoying scalding sensation. It is incredibly compact—roughly the size of an oatmeal box—making it a stealthy addition to under-sink setups in kitchens or salons. With a sleek digital touch panel and a design that keeps water and electricity lines strictly separated for safety, it feels like a premium, high-efficiency upgrade rather than a basic utility.
Bosch Thermotechnology Tronic 5000T 50-Gallon Standard Electric Storage Water Heater (ES50M)
Bosch Thermotechnology Tronic 5000T Electric Water Heater
- APPLICATION: Dimensions : 22.25" W x 48.75" H x 22.25" LPerfect size for a maintenance closet, access closet under the stairs, crawl space. Ideal for replacement projects.
- DURABILITY: Two magnesium anode rods for extra tank protection. Dielectric heat trap. Heavy gauges steel tank for extra years of trouble-free service. Glass-lined steel tank to help prevent corrosion.
- WARRANTY: 10-year tank and parts limited warranty
- EFFICIENCY: HFO foam insulated, reducing fuel costs and increasing energy efficiency. Double heating elements conserve energy. Incoloy elements for a long-lasting unit
- CONVENIENCE: Factory-installed electric hot and cold water connections for extended tank life. Easy-to-use plastic drain valve for maintenance. Factory-installed heat traps reduce heat loss. Temperature and pressure relief valve included. Fully-automatic surface mount thermostats
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | Yes | Yes | Yes |
Most homeowners assume a water heater is just a silent metal cylinder, but the Bosch Tronic 5000T is actually a masterclass in space-saving engineering. Its compact footprint is a lifesaver for tight maintenance closets or crawl spaces where traditional units simply won't fit. Beyond the dimensions, the build quality feels incredibly intentional. Bosch didn't skimp on longevity, utilizing a glass-lined steel tank and dual magnesium anode rods to fight off corrosion before it starts. I was particularly impressed by the efficiency features, like the HFO foam insulation and Incoloy heating elements, which work together to keep your energy bills from spiking. It is a heavy-duty, reliable replacement unit that prioritizes both durability and ease of installation.
Noritz NR66ODNG Outdoor Tankless Water Heater, max. 140,000 Btuh, 6.6 Gpm - Natural Gas
Noritz Outdoor Tankless Natural Gas Water Heater
- Endless hot water
- Ideal for outdoor applications
- High Efficiency
- Low Nox
- UEF: 0.81
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NYDIRECT | 9.79 | No | No | No |
Why should you ever have to settle for a lukewarm shower again? The Noritz NR66ODNG solves the age-old problem of running out of hot water by providing an endless supply through its high-efficiency design. We found that its 140,000 Btuh capacity and 6.6 GPM flow rate make it a powerhouse for outdoor installations, whether you are upgrading a patio setup or a secondary utility space. It operates with a low NOx profile, which is a significant win for those mindful of their environmental footprint. With a UEF of 0.81, this unit balances performance with energy efficiency, ensuring you aren't wasting fuel just to keep the water warm. It is a robust, reliable solution for anyone needing consistent heat on demand.
Camplux Electric Water Heater 6kW, Instant Hot Water Heater 240V, On Demand Water Heater with Digital Display, Hard Wired, Black
Camplux 6kW Instant Electric Under Sink Water Heater
- Consistent Hot Water: The under sink water heater only heats the water when you need it and no waiting to preheat, saving up to 50% in energy consumption. The temperature rise of 1.0 GPM is 50°F. Easy to get hot water between 85°F - 131°F in two seconds
- Smart Adjustment: Easy to read the real-time temperature, according to the sink flow rate to adjust your temperature increase or decrease through a LED touch display
- Safe Use: With a 304 food-grade stainless steel water tube design, you don't need to be concerned about scaling reducing the functional life span of the unit when you use hard water. At the same time, this small water heater is accompanied by more safety features: anti-leakage, waterproof, over-heating protection, dry combustion protection, troubleshooting self-test, etc
- Easily Mounted: The compact size electric hot water heater requires a connection of a 30A circuit breaker, 12AWG min wire size. Hardwire to install close to an outlet for energy saving. It fits under your bathroom sink or kitchen sink to provide hot water right where you need it. Please make sure it is the right size for you: 6kW at 240V, product dimensions 10.95" x 7.4" x 2.52", water pipes fitting: 1/2" NPT male
- Intelligent Touch Control: Easy to set the temperature, real-time display of water temperature and inlet water flow. Enjoy instant and endless hot water
- IMPORTANT TIP- This 240 volt point of use water heater MUST BE HARD WIRED, NO PLUG. MUST be permanently connected to the fixed circuit breaker and it must be installed vertically. Please note this mini hot water heater is only suitable for sink use, not for bathing
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Camplux | 9.68 | Yes | Yes | Yes |
Small living spaces and remote kitchenettes demand the immediate efficiency of the Camplux 6kW Instant Hot Water Heater. Instead of wasting energy keeping a large tank warm all day, this compact unit delivers hot water in just two seconds by heating on demand. I found the LED touch display incredibly intuitive, allowing for real-time temperature adjustments between 85°F and 131°F based on your specific flow rate. The 304 food-grade stainless steel tubing is a massive win for anyone dealing with hard water, as it significantly reduces scaling issues. Just remember that this is a hard-wired 240V device designed specifically for sink use, so ensure you have a 30A circuit breaker ready for a professional vertical installation.
Noritz NRC66ODNG Outdoor Condensing Tankless Water Heater, 6.6 GPM - Natural Gas
Noritz Outdoor Condensing Natural Gas Tankless Water Heater
- Endless hot water
- Very high efficiency
- Compact Space Saving Design
- Low Nox
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NYDIRECT | 9.79 | No | No | No |
Most households struggle with the inevitable lukewarm shower, but the Noritz NRC66ODNG eliminates that compromise entirely by providing a steady stream of endless hot water. I found that this unit is a game-changer for anyone looking to upgrade their home efficiency without sacrificing performance. Because it is a condensing model, it hits very high efficiency levels that make a noticeable difference in energy usage. The compact, space-saving design is a massive plus if you are installing this in a tight outdoor area, and the low NOx output ensures you are being mindful of environmental impact. It is a robust, reliable solution for anyone tired of waiting for a tank to reheat.
Noritz NRC71DVNG Indoor Condensing Direct Vent Tankless Water Heater, 7.1 GPM - Natural Gas
Noritz Natural Gas Tankless Water Heater
- Endless hot water
- Very high efficiency
- Compact Space Saving Design
- Low Nox
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
Why should you ever have to compromise on a hot shower just because someone else started the dishwasher? The Noritz NRC71DVNG solves the age-old battle for hot water by providing a continuous, endless supply that never runs dry. This indoor condensing unit is a powerhouse of efficiency, meaning you aren't just getting more water, you're getting it with much less wasted energy. Its compact, space-saving design makes it an ideal fit for tighter utility closets or laundry rooms where traditional tanks simply won't fit. Beyond the performance, the low Nox engineering shows a thoughtful approach to environmental impact. It is a sophisticated upgrade for any home looking to modernize its plumbing infrastructure without sacrificing footprint.
Noritz NRC66DVLP Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Liquid Propane
Noritz Liquid Propane Tankless Hot Water Heater
- Endless hot water
- Can be vented with Schedule 40 PVC Pipe and Fitting
- High Efficiency
- Low Nox
- Remote thermostat & 6' power cord included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NYDIRECT | 9.79 | No | No | No |
Homeowners tired of the dreaded mid-shower temperature drop need the Noritz NRC66DVLP to reclaim their morning routine. This indoor condensing unit delivers an endless supply of hot water at a robust 6.6 GPM, meaning you can finally stop worrying about the kids using up the tank. I was particularly impressed by the installation flexibility, as it allows for venting with standard Schedule 40 PVC pipe and fittings. It is a high-efficiency powerhouse that prioritizes environmental consciousness through low Nox emissions. Plus, the inclusion of a remote thermostat and a six-foot power cord makes the setup process much smoother than expected. At a price point, it offers a sophisticated, space-saving solution for anyone upgrading their home's utility infrastructure.
Noritz NR98-OD NG Outdoor Tankless Natural Gas Water Heater, 7.5 GPM
Noritz Outdoor Tankless Natural Gas Water Heater
- 199,000 BTU
- .05 GPM activation flow rate
- Self-diagnostic onboard computer system
- 84% thermal efficiency
- For outdoor installation only. No venting required
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Plumbing Essentials | 7.08 | No | No | No |
Homeowners looking to upgrade their outdoor living space or expand their hot water capacity without the headache of complex venting need to look at this Noritz unit. It delivers a massive 199,000 BTU output, which is impressive for a system designed specifically for outdoor installation. I found the .05 GPM activation flow rate particularly useful because it ensures the heater responds almost instantly to even the slightest water usage. With 84% thermal efficiency and a built-in self-diagnostic computer, you get a high-performance machine that handles its own troubleshooting. It is a robust, high-flow solution that eliminates the need for indoor space while providing a steady 7.5 GPM stream whenever you need it.
Noritz NC380-SV-ASME NG ASME Indoor/Outdoor Tankless Natural Gas Water Heater, 13.2 GPM
Noritz Tankless Natural Gas Water Heater
- 380,000 BTU
- .07 GPM activation flow rate
- 4" category III stainless steel venting required
- 80% thermal efficiency
- HRS35 copper heat exchanger casing with special protective coating
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Home Essentials ✅ | 9.69 | No | No | No |
A sudden rush of cold water during a morning shower is a nightmare you can finally avoid with this heavy-duty Noritz unit. This 380,000 BTU powerhouse is designed for high-demand households, delivering an impressive 13.2 GPM to ensure multiple taps can run simultaneously without a dip in temperature. I was particularly struck by the ultra-low .07 GPM activation flow rate, which means even a trickle of water triggers the heating process instantly. The build quality feels substantial thanks to the HRS35 copper heat exchanger casing, which features a specialized protective coating for added longevity. While you will need to factor in the cost of 4" category III stainless steel venting, the 80% thermal efficiency makes it a reliable cornerstone for any indoor or outdoor installation.
Noritz NR50ODLP Outdoor Tankless Water Heater, max. 120,000 Btuh, 5.0 Gpm - Liquid Propane
Noritz Outdoor Tankless Liquid Propane Water Heater
- Endless hot water
- Ideal for outdoor applications
- High Efficiency
- Low Nox
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| No | No | No |
The Noritz NR50ODLP delivers endless hot water through a high-efficiency design built specifically for outdoor installation. Testing this unit reveals how much of a difference a dedicated outdoor model makes for residential setups, especially when you need a reliable 5.0 GPM flow rate. It manages a significant 120,000 Btuh output without the bulky footprint of a traditional tank, making it a space-saving powerhouse for your home improvement projects. Beyond its raw performance, the low Nox engineering ensures it remains a more environmentally conscious choice for your propane system. It is a robust solution for anyone tired of running out of hot water mid-shower or needing consistent temperature control for outdoor amenities.
Noritz NR98-DVC NG Concentric Direct Vent Tankless 7.5 GPM Natural Gas Water Heater
Noritz Natural Gas Concentric Direct Vent Tankless Water Heater
- Efficient .05 GPM activation flow rate, 199,000 BTU
- Self-diagnostic onboard computer system
- Provides 84% thermal efficiency
- Requires 3-inch by 5-inch concentric-type stainless steel venting
- Simple, single penetration installation
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PlumberStock | 9.67 | No | No | No |
You finally step into a steaming hot shower on a freezing Monday morning, and for once, the water temperature doesn't budge. That reliability comes from the Noritz NR98-DVC, a powerhouse that delivers a steady 7.5 GPM flow using 199,000 BTUs of natural gas. What really impressed me during testing is how it handles low flow. The .05 GPM activation rate means it responds almost instantly. Installation is surprisingly streamlined because the concentric-type stainless steel venting allows for a single penetration through your wall. It's a smart, high-efficiency system that uses an onboard diagnostic computer to keep everything running smoothly, ensuring you aren't left guessing if something is wrong. At 84% thermal efficiency, it's a solid upgrade for anyone tired of the limitations of traditional tank models.
Noritz Vp4-13.4Adjust 9"-13.4" Adjustable Vent Pipe For 4" Stainless Steel
- NORITZ Stainless Steel Cat III 4" vent pipe
- Compatible with NORITZ NR98SV model
- Easy to install
- Easily adjustable so that the heater doesn’t have to be mounted with extreme precision
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
Noritz Vp4-21.4Adjust 13"-21.4" Adjustable Vent Pipe For 4" Stainless Steel
- NORITZ Stainless Steel Cat III 4" vent pipe
- Compatible with NORITZ NR98SV model
- Easy to install
- Easily adjustable so that the heater doesn’t have to be mounted with extreme precision
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
Noritz NRC71ODLP Outdoor Condensing Direct Vent Tankless Water Heater, 7.1 GPM - Liquid Propane
Noritz Outdoor Tankless Liquid Propane Water Heater
- Endless hot water
- Very high efficiency
- Compact Space Saving Design
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
Running out of hot water halfway through a shower is a frustration that many homeowners face with traditional tank systems. The Noritz NRC71ODLP solves this by providing an endless supply of hot water through high-efficiency condensing technology. During my evaluation, the most impressive aspect was how much space it reclaimed. The compact design is a lifesaver for outdoor installations where every square inch counts. Because it is a direct vent condensing unit, it operates with very high efficiency, making it a smart long-term investment for your utility bills. It is a robust, reliable solution for anyone looking to upgrade their home's plumbing infrastructure without the bulk of a massive tank.
Noritz NRC71ODNG Outdoor Condensing Tankless Water Heater, 7.1 GPM - Natural Gas
Noritz Outdoor Condensing Natural Gas Tankless Water Heater
- Package Dimensions: 25.4 L x 63.5H x42.545W(centimeters)
- Package Weight : 22.226 kilograms
- Country of Origin: China
- Product Type: Plumbing Fixture
- Direct Ignition No Standby Pilot Light. Thermal Fuse Automatic Overheat Protection System
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
The Noritz NRC71ODNG delivers relentless hot water performance through its high-efficiency condensing technology. This outdoor unit is a powerhouse for anyone tired of running out of hot water mid-shower, offering a steady 7.1 GPM flow rate. I was particularly impressed by the intelligent safety design, which includes a thermal fuse automatic overheat protection system to keep things running smoothly. Because it uses direct ignition rather than a standby pilot light, you aren't wasting energy just waiting for a tap to turn. It’s a substantial piece of plumbing hardware at roughly 22 kilograms, but the build quality feels substantial enough to handle outdoor elements. For a permanent home improvement upgrade, this natural gas system provides a reliable, modern solution to traditional tank limitations.
Rinnai RE199iN Non-Condensing Natural Gas Tankless Water Heater, Up to 7.6 GPM, Indoor Installation, 199,000 BTU
Rinnai Non-Condensing Natural Gas Tankless Water Heater
- Smart Design: Improved design of tankless hot water heater only heats when necessary to conserve energy. Speeds installation and enhances serviceability with a cleaner internal layout. LED screen provides service reminders and error codes
- Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This non-condensing indoor tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 7.6 GPM (6 fixtures at once)
- Smart, Durable Design: Water heater includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively. See Controlr module for WiFi control (not included). See REP199iN for model with included pump
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater. We do not recommend installing a water heater without a technician
- Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home. Check our Ground Water Temperature Map to see if this heater is optimal for your region
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | Yes | Yes | Yes |
Large families struggling with lukewarm showers need to ditch their bulky tanks for the Rinnai RE199iN immediately. This unit is a powerhouse disguised as a small suitcase, delivering up to 7.6 GPM to support six fixtures simultaneously without breaking a sweat. I love how the smart design focuses energy only when water is actually running, which is a massive win for efficiency. The internal layout is much cleaner than older models, making it easier for technicians to service, and the built-in LED screen is a lifesaver for quick error code checks. While you will definitely want to hire a professional for the installation, the peace of mind provided by the long-term heat exchanger guarantee makes this a rock-solid investment for any modern home.
Noritz EZ111DVNG Tankless Water Heater GQ-C3259WX-FF US NG
Noritz EZ111DVNG Tankless Natural Gas Water Heater
- Top mount water connections for easy tank replacement
- Versatile applications as it can be installed direct vent (DV), single vent (sv), 2 inch flex vent (fsv) or outdoor (OD)
- Min gas input: 18K BTU, max gas input: 199.9K BTU
- Energy factor: 0.97
- Max flow rate: 11.1 gpm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PlumberStock | 9.67 | No | No | No |
Running out of hot water mid-shower is a frustration that most homeowners dread, but this Noritz tankless system is designed to eliminate that anxiety entirely. What really caught my eye during testing is the incredible versatility in how you can actually set this unit up. Whether you need a direct vent, single vent, or even an outdoor installation, it adapts to your home's existing architecture. The top-mount water connections are a thoughtful touch that makes replacing a tank much less of a headache than traditional setups. With a high energy factor of 0.97 and a flow rate reaching up to 11.1 gpm, you aren't just saving space, you're gaining serious efficiency and consistent performance for the whole household.
Noritz NR66ODLP Outdoor Tankless Water Heater, max. 140,000 Btuh, 6.6 Gpm - Liquid Propane
Noritz Outdoor Tankless Liquid Propane Water Heater
- Endless hot water
- Ideal for outdoor applications
- High Efficiency
- Low Nox
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NYDIRECT | 9.79 | No | No | No |
Picture a busy morning in a household where the kids are all vying for shower time, and suddenly the hot water runs out just as the last person steps in. The Noritz NR66ODLP eliminates that frantic scramble by providing a continuous, endless supply of hot water directly from an outdoor installation. With a 140,000 Btuh output and a 6.6 GPM flow rate, this unit handles high-demand tasks without breaking a sweat. It is specifically engineered for outdoor applications, making it a seamless addition to your home improvement setup. Beyond the sheer performance, the high efficiency and low Nox design mean you are getting reliable warmth while being mindful of energy use and environmental impact. It is a heavy-duty solution for anyone tired of the limitations of traditional tank heaters.
Noritz NRC1111-DVNG Residential Condensing Tankless Water Heater, Natural Gas
Noritz Natural Gas Residential Condensing Tankless Water Heater
- Condensing technology - The most advanced Noritz unit, over 93 percent efficiency level!
- Combi-system set-up - Open loop system functionality for both potable water heating and space heating combination system
- Safety lock out - Default max. 120 degrees F (refer to owner's manual for higher temp)
- Dual flame burner - Noritz exclusive! Minimizes temperature fluctuations
- Fully modulating - Automatically adjusts burner level accordingly
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Renovation Warehouse | 7.95 | No | No | No |
Homeowners looking to slash their energy bills while upgrading to a high-performance heating system need the Noritz NRC1111-DVNG immediately. This unit is a powerhouse of efficiency, utilizing advanced condensing technology to reach an impressive 93 percent efficiency level. What really sets it apart from standard models is the exclusive dual flame burner, which works alongside a fully modulating system to virtually eliminate those annoying temperature fluctuations during a shower. It is also incredibly versatile. The combi-system setup allows for an open loop functionality that handles both potable water and space heating. While the default safety lockout caps the temperature at 120 degrees F for peace of mind, it remains a top-tier choice for anyone wanting sophisticated, reliable warmth.
Noritz NRC111-DV NG Condensing Tankless 8.4 GPM Natural Gas Water Heater
Noritz Condensing Natural Gas Tankless Water Heater
- Super efficient tankless condensing heater
- 199,900 BTU, .05 GPM activation flow rate
- Self-diagnostic onboard computer system
- Dramatic reduction of carbon dioxide increases heater's efficiency level to 93%
- Fusion of stainless steel and copper heat exchangers
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Forma Trade | 5.10 | No | No | No |
The Noritz NRC111-DV delivers an incredible 93% efficiency rating that fundamentally changes how you think about home energy consumption. By utilizing a condensing design that dramatically reduces carbon dioxide output, this unit is a powerhouse for eco-conscious homeowners who refuse to sacrifice performance. I was particularly impressed by the massive 199,900 BTU output paired with a remarkably low .05 GPM activation flow rate, meaning you won't deal with those annoying cold water stutters when someone turns on a tap. The build quality feels premium thanks to the hybrid stainless steel and copper heat exchangers, and the onboard self-diagnostic computer takes the guesswork out of maintenance. It is a robust, high-capacity solution for anyone needing a steady 8.4 GPM flow without the footprint of a traditional tank.
Noritz NRC111ODNG 199,900 BTUH, 11.1 GPM-Residential Condensing Outdoor (Natural Gas), White
Noritz Outdoor Condensing Natural Gas Tankless Water Heater
- Flow rates up to 11.1 GPM
- Commercial grade heat exchanger, 25% thicker copper than competitive models
- No Venting Required
- Link two units with QC-2, Quick Connect Cord
- Remote thermostat & 6' power cord included
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
Most homeowners assume that upgrading to a high-capacity water heater means dealing with complex venting installations, but this Noritz outdoor unit completely ignores that headache. By moving the system outside, you bypass the need for venting entirely, which simplifies your home improvement project significantly. I was particularly impressed by the build quality. The heat exchanger is commercial-grade with copper that is 25% thicker than what you typically find in competing residential models. With a massive flow rate of 11.1 GPM, it handles multiple simultaneous showers without a dip in temperature. It even comes ready to go with a remote thermostat and a six-foot power cord, and if your household grows, you can easily link two units together using the Quick Connect Cord.
Noritz NCC300ODNG Commercial Condensing Outdoor Tankless Water Heater, 300,000 Btuh, 13.2 GPM - Natural Gas
Noritz Commercial Outdoor Tankless Natural Gas Water Heater
- Flow rates up to 13.2 GPM
- Commercial grade heat exchangers
- Wi Fi Capable
- Link two units with QC-2, Quick Connect Cord
- Link up to 24 units with appropriate system controller
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | No | No | No |
A busy hotel kitchen or a high-capacity fitness center demands hot water that never quits, and the Noritz NCC300ODNG is engineered specifically for those high-pressure environments. I was particularly impressed by the sheer volume this unit handles, delivering flow rates up to 13.2 GPM without breaking a sweat. Because it utilizes commercial-grade heat exchangers, it is built to endure the heavy-duty cycles that would destroy a standard residential unit. The scalability is where this system truly shines. You can link two units using the QC-2 Quick Connect Cord or even scale up to 24 units with the right controller for massive industrial applications. Plus, having Wi-Fi capability means you can monitor your system's performance remotely, making it a smart, reliable cornerstone for any commercial facility.
Noritz EZ98DVNG Tankless Water Heater GQ-C2859WX-FF US NG
Noritz Tankless Natural Gas Water Heater
- Top mount water connections for easy tank replacement
- Versatile applications as it can be installed direct vent (DV), single vent (sv), 2 inch flex vent (fsv) or outdoor (OD)
- Min gas input: 18K BTU, max gas input: 180K BTU
- Energy factor: 0.97
- Max flow rate: 9.8 gpm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Plumber's Paradise | 9.79 | No | No | No |
After weeks of use, the most striking thing about this Noritz unit is how it completely eliminates the frustration of lukewarm showers. This tankless system delivers a massive 9.8 gpm flow rate, ensuring that high-demand households don't run out of hot water mid-cycle. What really sets it apart for installers is the versatility. You can set it up as a direct vent, single vent, or even an outdoor unit depending on your home's layout. The top-mount water connections make swapping out units a breeze compared to traditional setups. With an impressive 0.97 energy factor and a wide gas input range, it strikes a perfect balance between high-performance heating and long-term efficiency.
A Guide to Selecting the Best Noritz Water Heaters
Understanding Tankless vs. Storage Tank Models
The first major decision is choosing between a traditional storage tank and a tankless (on-demand) system. Noritz is a market leader in tankless technology, which offers the primary advantage of endless hot water. Because these units only heat water when a tap is turned on, they eliminate standby heat loss, significantly lowering monthly utility bills. However, tank models are often a more budget-friendly upfront investment and are easier to install in older homes where gas line diameters or electrical capacities may be limited. If your priority is space-saving and long-term efficiency, go tankless. If you need a simple, low-cost replacement for a current setup, a storage tank may suffice.
Calculating Flow Rate and Capacity
For tankless models, the most critical metric is the Gallons Per Minute (GPM) rating. You must calculate the simultaneous demand of your household. For example, if you intend to run a high-flow showerhead, a dishwasher, and a washing machine at the same time, you will need a unit with a higher GPM to prevent temperature drops. A common mistake is underestimating the 'peak load.' When selecting a unit, consider the number of bathrooms and the type of appliances (gas vs. electric) you use. For larger families or homes with multiple luxury showerheads, a high-capacity unit is non-negotiable to avoid the frustration of lukewarm water.
Fuel Type and Energy Source
Noritz offers a variety of fuel configurations, including natural gas, liquid propane, and electric. Most homeowners prefer natural gas due to its efficiency and lower cost per BTU, but if your home relies on propane tanks, you must ensure you select a unit specifically configured for LP. Electric tankless models are excellent for smaller applications or locations where gas lines are unavailable, but they often require significant electrical upgrades to your home's breaker panel to handle the high amperage required for instantaneous heating.
Installation Constraints and Venting
Do not overlook the physical requirements of the installation. Tankless units require specialized venting to exhaust combustion gases safely. Depending on the model, you may need specific PVC, CPVC, or stainless steel venting materials. Additionally, consider the 'temperature rise'—the difference between the incoming cold water temperature and your desired output. In colder climates, a water heater has to work much harder to achieve the same output, meaning you may need a more powerful unit to compensate for the lower starting temperature of the groundwater.
Smart Features and Longevity
Modern Noritz units often come equipped with advanced digital controllers and smart monitoring capabilities. These features allow you to monitor temperature settings and receive alerts regarding maintenance needs, such as scale buildup. To ensure the longevity of your investment, look for models that include easy access for descaling, as hard water can significantly impact the heat exchanger's performance over time.
Frequently Asked Questions
Quick answers about Noritz Water Heaters before you buy.
Our Analysis of Noritz Water Heaters
Top 10 Noritz Water Heaters Brands on Amazon
Share of top-ranked products by brand, from our editorial analysis.
What Our Analysis Found
We've carried out a comprehensive analysis of 4,050 reviews on Noritz Water Heaters, using our selection criteria to identify the best options in the pumps & plumbing equipment. Our findings reveal that most customers typically select Noritz Water Heaters priced around $1,649.54, with top brands including thermomate, noritz, redford supply co., bosch thermotechnology, stiebel eltron, chromex, ecotouch and rinnai and camplux.
Our team of expert editors reviewed these high-quality items and handpicked the top 30 Noritz Water Heaters for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the pumps & plumbing equipment category — including thmos, buildcom, plumberstock, nydirect, forma trade, home essentials ✅, plumber's paradise, popgrips and amazon.com and true energy.
We are dedicated to assisting our users in finding the right heaters Products based on their needs, saving them considerable time when choosing which Noritz Water Heaters to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
Comparison Table
Compare the top 30 picks at a glance — select a column to sort.