Best Outdoor Tankless Gas Water Heater to Buy in 2022

Sometimes it might be quite difficult to find the best outdoor tankless gas water heater. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this outdoor tankless gas water heater buying guide.

Our Top 10 Recommendations:

10 Best Outdoor Tankless Gas Water Heater Reviews:

Bestseller No. 1
Rinnai V53DeN Natural Gas Tankless Hot Water Heater, 5.3 GPM
  • 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 5.3 GPM hot water flow rate for a powerful, constant stream
  • 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
SaleBestseller No. 2
Rheem Mid-Efficiency 8.4GPM Outdoor Natural Gas Tankless 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
Bestseller No. 3
Rheem Mid-Efficiency 7.0GPM Outdoor Natural Gas Tankless Water Heater
  • Continuous Hot Water – never run out of hot water, even with back-to-back showers
  • Tankless Gas Water Heaters are cost saving and energy efficient
  • Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need
  • Easy, Convenient Control –Easily adjust water temperature ranging from 85˚F–140˚F
  • For use outdoors with freeze protection up to -30 degrees
SaleBestseller No. 4
Rinnai V65eN Natural Gas Tankless Hot Water Heater, 6.5 GPM
  • 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 6.5 GPM hot water flow rate for a powerful, constant stream
  • 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
SaleBestseller No. 5
Rheem Tankless Outdoor Natural Gas Water Heater Non-Condensing 9.5 GPM
  • Continuous Hot Water – never run out of hot water, even with back-to-back showers
  • Tankless Gas Water Heaters are cost saving and energy efficient
  • Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need
  • Easy, Convenient Control –Easily adjust water temperature ranging from 85˚F–140˚F
  • For use outdoor with freeze protection up to -30 degrees
Bestseller No. 6
Natural Gas Tankless Water Heater, FOGATTI Outdoor 8.1 GPM, 180000 BTU White Instant Hot Water Heater
  • We recommend that all installations of units must be done in accordance with the local building and plumbing codes of the installation location and installation be done by a licensed professional.
  • The tankless design means you don't have to wait 30 minutes for preheating and unlimited use of hot water.
  • 180,000 BTU high heating capacity and maximum 8.1 GPM. It is suitable for 3-5 outlet points, which can satisfy whole family. UEF over 0.82, the high energy conversion rate can effectively reduce energy loss.
  • Excellent quality CSA certified in the United States and Canada. Adopting the world's most advanced technology, superior safety and durability.
  • Using built in forced exhaust fan at the bottom ensures stable combustion and eliminates the influence of external wind. Compact design for easy installation.
Bestseller No. 7
Rinnai RL94EN Tankless Hot Water Heater, 9.8 GPM, Natural Gas, Outdoor Installation
  • 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
SaleBestseller No. 8
Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas)
  • Note: Please download and read the installation manual and product manual carefully when purchasing the product to ensure that your installation environment is consistent with this product. When installing, please strictly follow the installation manual and installation instruction video, otherwise it may not work. If you have any questions about the product, please contact us by email. We have a professional technical support team.
  • 【Tankless Instant Hot Water Heater】No need to preheat before using the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature.
  • 【High Sensitive Touch Led Display】Comes with smart digital LED display high-definition large screen, freely adjustable the temperature between 30℃-65℃.
  • 【Multiple Security Protection】The natural gas water heater is upgraded with 12 protection methods to ensure your safety. Such as dry burning protection, over 65℃(149 °F) protection, leakage protection, etc.
  • 【Energy and Money Saving】The hot water heater adjusts power input based on flow rate and temp setting in real time. Summer/winter 2 modes to save up to 60% on your natural gas costs.
Bestseller No. 9
Rinnai V53DeP Propane Tankless Hot Water Heater, 5.3 GPM
  • 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 5.3 GPM hot water flow rate for a powerful, constant stream
  • 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
Bestseller No. 10
Flame King Tankless Outdoor Portable Propane Gas 10L 2.64GPM Water Heater 68,000 BTU for Hot Water Shower, RV, Camping, Farm, Cabins
  • Fully adjustable control knobs and visual digital meter - Winter/Summer Setting, MIN/MAX Gas Setting, MAX/MIN Water Flow Rate Setting, Digital Water Temperature Meter
  • Durable steel cased water heater designed to last
  • On/off water control shower head and 4.5 Feet of Stainless Steel Wrapped Hose to avoid kinks and punctures.
  • Regulator and 4.5 ft. hose included for use with a BBQ propane tank (QCC1 Type-1 Valve

Last update on 2022-09-25 / Affiliate links / Images from Amazon Product Advertising API

How to find the best outdoor tankless gas water heater?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best outdoor tankless gas water heater for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good outdoor tankless gas water heater recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the outdoor tankless gas water heater need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for outdoor tankless gas water heater to find what you’re looking for:

Brand

In some cases, the brand of outdoor tankless gas water heater is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given outdoor tankless gas water heater are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about outdoor tankless gas water heater are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare outdoor tankless gas water heater quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best outdoor tankless gas water heater can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.