Top 10 Best Outdoor Tankless Water Heater [2022]

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Are you looking for Outdoor Tankless Water Heater Reviews? Our experts found 53542 number of feedback online for "Outdoor Tankless Water Heater" and shortlisted them. This suggestions is created for those looking for their ideal Outdoor Tankless Water Heater. On selected products for the Best Outdoor Tankless Water Heater you will see ratings. The rating matrix we have generated is based on user ratings found online. Take a look -

Best Outdoor Tankless Water Heater

Best Outdoor Tankless Water Heater

We’ve scanned 53542 reviews for you. If you are looking for the outdoor tankless water heater than this review article may help you.

Comparison Chart of Top 10 outdoor tankless water heater

NoProductScoreAction
1Rinnai RL94IN Tankless Hot Water Heater9.8Buy On Amazon
2Rinnai RU180eN Condensing Tankless Hot Water Heater9.6Buy On Amazon
3Rinnai V53DeN Tankless Hot Water Heater9.4Buy On Amazon
4Camplux 5L Outdoor Portable Water Heater9.4Buy On Amazon
5Marey GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater8.8Buy On Amazon
6Rinnai RL75eP Tankless Hot Water Heater8.4Buy On Amazon
7Rheem RTG-84XLN-1 Performance Mid-Efficiency Tankless 84 Outdoor Water Heater8.2Buy On Amazon
8EcoSmart ECO 18 Electric Tankless Water Heater8.2Buy On Amazon
9Rheem RTEX-24 24kW 240V Electric Tankless Water Heater8.2Buy On Amazon
10Rinnai RL75eN Tankless Hot Water Heater8.2Buy On Amazon

1. Rinnai RL94IN Tankless Hot Water Heater

  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 9.8 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on demand.
  • Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively.

2. Rinnai RU180eN Condensing Tankless Hot Water Heater

  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended.
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: Up to 10 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Equipped with Circ-Logic – Pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation.
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring.

3. Rinnai V53DeN Tankless Hot Water Heater

  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended.
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
  • Optimal Water Pressure: High-performance up to 5.
  • Enhanced scale detection lessens possibility of serious, long-term damage to unit
  • Guaranteed to Last: 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively.

4. Camplux 5L Outdoor Portable Water Heater

  • CSA Safety Standard -CSA safety standard approved portable tankless water heater,flame failure device, anti-freezing protection, over heating protection to ensure the family safety.
  • Lightweight Portable Design-Compact size weights 10 lbs with portable handle for easily carry.
  • Instant Hot Water- Maximum power output 28,000btu/hour, you can get 1.
  • Energy Saving-Compact and light weight structure with 11.
  • Important Tips -To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe.

5. Marey GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater

  • This unit is flow activate
  • Save up to 60% on electricity bills for water heating
  • Compact design saves space and is easy to install almost anywhere
  • No electrical connection is required so it’s perfect alternative for those homes experiencing frequent power outages.
  • Unlimited hot water whenever is needed
  • Provide endless hot water on demand and only as needed
  • Allows water temperature to be controlled
  • Rustproof, no water loss due to leaks
  • Works easily with low levels of water pressure
  • 5 years warranty

6. Rinnai RL75eP Tankless Hot Water Heater

  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 7.5 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on demand.
  • Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively.

7. Rheem RTG-84XLN-1 Performance Mid-Efficiency Tankless 84 Outdoor Water Heater

  • Exclusive Water Savings technology conserving up to 1, 100 gallons per year
  • 157, 000 BTU (gas consumed per hour)
  • Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
  • Recirculation pump ready kit ready
  • For use outdoors with freeze protection up to -30 degrees
  • Fuel Type: Natural Gas

8. EcoSmart ECO 18 Electric Tankless Water Heater

  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Amperage (amps): 75.
  • The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
  • Lifetime warranty for residential use
  • Save up to 60% on your water heating costs with the most advanced, self modulating technology available.
  • Never run out of hot water with an ECOSMART tankless water heater.
  • Save up to 12 cubic feet of storage space.
  • Digital temperature control in 1-degree increments gives users complete control of hot water
  • 75 A

9. Rheem RTEX-24 24kW 240V Electric Tankless Water Heater

  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
  • Bottom 3/4″ NPT water connections
  • On demand, consistent and continuous hot water

10. Rinnai RL75eN Tankless Hot Water Heater

  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 7.5 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on demand.
  • Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively.

Outdoor Tankless Water Heater Buying Guide


Does the thought of finding a great Outdoor Tankless Water Heater stress you out? Has your mind been juggling between choices when it comes to buying Outdoor Tankless Water Heater in general, specifically regarding which model to choose?
If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Outdoor Tankless Water Heater for themselves. We understand the stress associated with the buying process!
Since you’re here, you are obviously curious about Outdoor Tankless Water Heater Reviews. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.
There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.
But that’s not always easy, right? That's why we've taken time to compile a list of the best Outdoor Tankless Water Heater in today's market, on your behalf, so that there will be no more worries for you.
How did we come up with the list, you ask? How did we create this buying guide?
  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volaume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Outdoor Tankless Water Heater currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-
  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t.
Top Outdoor Tankless Water Heater brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.
  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Outdoor Tankless Water Heater based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Outdoor Tankless Water Heater before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Outdoor Tankless Water Heater they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Outdoor Tankless Water Heater, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Outdoor Tankless Water Heater before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Outdoor Tankless Water Heater will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Outdoor Tankless Water Heater if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Outdoor Tankless Water Heater on the market, the products that got mostly negative ratings get filtered and discarded.

These are the criteria we have chosen our Outdoor Tankless Water Heater on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.
Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Outdoor Tankless Water Heater featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.