Do you like to have a good relax after a busy day? Taking a hot bath is a great way to do it, but it is not so easy if you are not at home. I also had this trouble, but found a solution: I ordered the outdoor tankless heater and this device changed my life. First of all, it takes a few places, works with gas, and can be installed anywhere you need.

Best Outdoor Tankless Water Heater - Editor's Choice

As for me, it is an irreplaceable thing for a summer cottage, mobile home, bunker, etc. I want to highlight fast water heating: it is an amazing feature that makes life easier. The device provides hot water in the whole house, and even if you have a big family, it is not a trouble. Let’s have a look at TOP-12 best outdoor tankless water heaters on the market.

TOP-12 Outdoor Tankless Water Heater

ImageProductBrandLink
Rinnai V65eN Tankless Hot Water Heater, LargeRinnaiBuy on Amazon
CAMPLUX ENJOY OUTDOOR LIFE CM264-NG Natural Gas Residential Water HeaterCAMPLUX ENJOY OUTDOOR LIFEBuy on Amazon
Rheem RTG-84XLN-1 Tankless Water Heater, GreyRheemBuy on Amazon
HUGO Battery Backup for Tankless Water Heaters and Gas AppliancesSPSBuy on Amazon
Stiebel Eltron Tankless Heater – Tempra 12 Plus – Electric, On Demand Hot Water, Eco, WhiteStiebel EltronBuy on Amazon
Ridgeyard Digital Display Natural Gas Tankless Instant Hot Water Heater Boiler Burner with Shower Head Indoor Home Bathroom Supplies (8L Natural Gas)RidgeyardBuy on Amazon
Rinnai RL Series HE+ Tankless Hot Water Heater | RL75eN - Natural Gas | Outdoor InstallationRinnaiBuy on Amazon
Eccotemp fvi12-NG FVI-12 Natural Gas, 3.5 GPM, High Capacity Tankless Water Heater, WhiteEccotempBuy on Amazon
Rheem RTG-95XLN 9.5 GPM Low NOx Outdoor Tankless Natural Gas Water HeaterRheemBuy on Amazon
Noritz NR98SVNG Indoor Only Tankless Hot Water Heater, Single Wall Vent, max. 199,900 Btuh, 9.8 Gpm - Natural GasNoritzBuy on Amazon
Ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology,WhiteEcosmartBuy on Amazon
Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Outdoor Portable Gas Water Heater, Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, WhiteGASLANDBuy on Amazon

#1 Rinnai V Series HE Tankless Hot Water Heater

Rinnai V Series HE Tankless Hot Water Heater

There is a good choice for big cottages or mobile houses. A heater is for outdoor installation only. It can provide a big area with hot water. Good is fully eco-friendly. Only natural gas is using for boiling. There is an innovative technology, that doesn’t harm the environment. Also, you can forget about limits. Even if you are a part of a big family, be sure, that you have as much time for a shower as you need! Put off the fighting for the bath! You are an owner of the endless hot water now! There is quite a high flow rate. Of course, it depends on the grounded temp, location, the size of the area, etc., but average it is 6.5 GPM. I also highlight the option of mobile app control. You can create a schedule throughout the day. There is also a vacation mood if you want to minimize electricity billing. You also have a digital control pod to manage the water temperature. A manufacturer takes care of the reputation and offers a 120-months warranty. During ten years you can keep calm about the heater service.

What I liked:
  • good choice for a big house;
  • provides a big area with hot water;
  • fully eco-friendly;
  • endless hot water;
  • high flow rate;
  • option of mobile app control;
  • digital control pod to manage the water temperature;
  • 120-months warranty;
  • low price;
What I didn’t like:
  • for outdoor installation only;

#2 CAMPLUX ENJOY OUTDOOR LIFE CM264-NG

CAMPLUX ENJOY OUTDOOR LIFE CM264-NG

It is a popular heater all over the world. My parents use it for a long time for their travel bus. It is easy to manage. There are two buttons to choose the rate of temperature and mood. Even old people can cope with it. Thanks to the small size, the device is perfect for little houses or apartments. The modern construction fits every design. The digital pod is enough bright for simply reading. You can get the ideal water temperature because of using eco gas. It also can minimize electricity costs. Your safety is very important. Take it to note and pay attention to some important device features. There is flameout protection that prevents the fire. The anti-freezing provides a long use of good. The one-year warranty comes in the kit.

What I liked:
  • easy to use;
  • two buttons to choose the rate of temperature and mood;
  • small size;
  • modern construction;
  • bright digital pod;
  • using eco gas;
  • can minimize electricity costs;
  • flame out protection;
  • anti-freezing system;
What I didn’t like:
  • doesn’t fit for big houses;
  • short warranty term;

#3 Rheem RTG-84XLN-1 Tankless Water Heater

Rheem RTG-84XLN-1 Tankless Water Heater

The device fits both for outdoor and indoor use. It is a great choice for summer cottage and city apartments. There are a lot of helpful features. Firstly, it saves water. Nowadays, when the prices are so high, it is very important. Secondly, gas costs are also low. The exclusive hot start program allows not waiting for hot water. It is always ready. There is freeze protection, if you want to put the heater outside. It can withstand up to -30 degrees Celsius. By the way, the device is fully eco-friendly, because it works with natural gas. The good is crafted with high-qualitative stainless steel. It means, that product can serve you for a long time. Unfortunately, the manufacturer doesn’t suggest any warranty and after buying a service. As for me, there is only one disadvantage.

What I liked:
  • fits both for outdoor and indoor use;
  • saves water;
  • gas costs are minimum;
  • exclusive hot start;
  • freeze protection;
  • fully eco-friendly;
  • high-qualitative stainless-steel;
  • can serve you for a long time;
What I didn’t like:
  • no warranty;

#4 HUGO Battery Backup for Tankless Water Heaters and Gas Appliances

HUGO Battery Backup for Tankless Water Heaters and Gas Appliances

The product is made in the USA. It means that the manufacturer takes to note all production requirements and recommendations – you can be sure in the high rate of quality. The device uses the pure sine wave and minimizes the electricity costs. This battery was specially created for tankless water heaters if you need a replacement. Also, the good can raise the power of your boiler. The accumulator is good both for indoor and outdoor use. The lightweight allows installing the battery in any place. The compact sizes fit for every kind of heater.

What I liked:
  • made in the USA;
  • high rate of quality;
  • minimize electricity costs;
  • specially created for tankless water heaters;
  • can raise the power of your boiler;
  • fits both for indoor and outdoor use;
  • lightweight;
  • compact sizes;
What I didn’t like:
  • no warranty;

#5 Stiebel Eltron Tankless Heater – Tempra 12 Plus

Stiebel Eltron Tankless Heater – Tempra 12 Plus

There is one more example of a qualitative heater. It prevents the continuous flow. The Germany automatic mechanism takes care of the preference of permanently hot water. This heater is a good choice if you are an owner of small mobile apartments or bunker. Thanks to the compact size it can save a lot of places. Innovation technologies save electricity because of auto mood turning. You even have an opportunity to watch how much money you economized on the LED display. The way of use is simple. By the way, there is no noise during operation. You can manage the device with the control pod that is located on the front side. A body is made with qualitative steel and finished with a top that protects the good from damages. Be sure, you will use the good for a long time. The 7-years warranty guarantees the fulfillment of these promises. As for me, it is a great value for this money.

What I liked:
  • continuous-flow;
  • automatic mechanism;
  • good choice for small apartments;
  • compact size;
  • innovation technologies save electricity;
  • LED display;
  • simply use;
  • no noise during operation;
  • control pod;
  • body is made with qualitative steel;
  • finished with a top that protects the good from damages;
  • 7-years warranty;
  • great value for this money;
What I didn’t like:
  • with one such heater, it’s quite difficult to provide a large house with hot water;

#6 Ridgeyard Digital Display Natural Gas Tankless Instant Hot Water Heater

Ridgeyard Digital Display Natural Gas Tankless Instant Hot Water Heater

I like this heater because of the full safety. It is equipped with the system of over fire protection. Thanks to it you will not cause any emergencies even if there are some technical troubles. The function of water pressure provides a strong flow. The hi-tech design fits all kinds of apartments and houses. It takes a few places because of lightweight and compact size. The system controls the preference of hot water and if the temperature goes down it starts to heat automatically. This good is a nice way if you want to minimize your electricity costs. The device is easy to use. However, you can find some tutorials in the kit, if you have any questions.

What I liked:
  • full safety;
  • equipped with the system of over fire protection;
  • strong flow;
  • hi-tech design;
  • lightweight and compact size;
  • the system controls the preference of hot water;
  • can minimize your electricity costs;
  • easy to use;
  • tutorials in the kit;
What I didn’t like:
  • no warranty;

#7 Rinnai RL Series HE+ Tankless Hot Water Heater

Rinnai RL Series HE+ Tankless Hot Water Heater

There is one more model from Rinnai. It is quite a popular manufacturer with a good reputation. This heater is for outdoor installation only. The good has enough power to provide the whole house with hot water. You also get a strong flow in your faucet. There is no need to adjust your schedule for hot water. Feel free to take a shower any time you need it. Forget about limits. You can spend even a full day in your bathroom and enjoy a comfortable water temperature. The manufacturer promises a long term of use. He confirms his words with a 10-years warranty and a big quantity of good customers’ feedbacks.

What I liked:
  • manufacturer with a good reputation;
  • for outdoor installation;
  • enough power to provide the whole house with hot water;
  • strong flow;
  • no need to adjust your schedule for hot water;
  • long term of use;
  • 10-years warranty;
  • big quantity of good customers’ feedbacks;
What I didn’t like:
  • doesn’t fit for flats and small apartments;

#8 Eccotemp fvi12-NG FVI-12 Natural Gas, 3.5 GPM

Eccotemp fvi12-NG FVI-12 Natural Gas, 3.5 GPM

There is a classic example of an outdoor heater. It perfectly fits different travel buses, apartments, and small houses. It uses natural gas to boil the water. I want to highlife the automatic turning on. It helps to save electricity. I like this feature because you can pay less money and take care of nature at the same time. The safe ventilation system makes impossible all emergences or probabilities of fire. The easy-read digital display is comfortable to use by everyone. It is enough bright, so you can see the text without any problems. The heater equipped with manual water controls that help to manage the temperature. The rate of quality is enough high. The manufacturer offers a 2-year warranty but assures that you will not need to use it.

What I liked:
  • uses natural gas;
  • automatic turning on;
  • safe ventilation system;
  • easy-read digital display;
  • equipped with manual water controls;
  • rate of quality is enough high;
What I didn’t like:
  • short temp of warranty;

#9 Rheem RTG-95XLN 9.5 GPM Low NOx Outdoor Tankless Natural Gas Water Heater

Rheem RTG-95XLN 9.5 GPM Low NOx Outdoor Tankless Natural Gas Water Heater

This heater is as simple to use as you can imagine, it has a universal design and fits anywhere. The device provides the endless limit of hot water – spend as much time in the shower as you wish. The device is eco-friendly because it uses only natural gas without any additional chemicals. It can boil 9,5 gal. per minute which is enough for a strong flow. Despite it, there is no noise during the operation. As for me, it is very important because I can’t sleep with the preference of any extraneous sounds. You can manage a heater with a control pod. The quality of the product is confirmed by international certification. The manufacturer offers a warranty, but you should discuss the personal service conditions before buying it.

What I liked:
  • simple to use;
  • fits any house;
  • provides the endless limit of hot water;
  • eco-friendly;
  • can boil 9,5 gal. per minute;
  • strong flow;
  • no noise during the operation;
  • control pod;
  • quality of the product is confirmed by the international certification;
What I didn’t like:
  • confusing warranty conditions

#10 Noritz NR98SVNG Indoor Only Tankless Hot Water Heater

Noritz NR98SVNG Indoor Only Tankless Hot Water Heater

This lot surprised me with a promise of a really strong flow up to 9.8 GPM. Only modern innovation technologies can provide such results. By the way, the heater is safe. It equipped with the fire protection system that can automatically turn off the device in emergencies. The manufacturer takes care of the environment and produces eco-friendly products. All heaters work only with natural gas. A durable steel and thick piping provide a long use without any troubles. The manufacturer wants to make you sure that this lot is a good choice and offers a 2-years warranty. There is a tutorial in the kit, but as for me, there is no need for it.

What I liked:
  • strong flow;
  • modern innovation technologies;
  • fire protection system;
  • eco-friendly;
  • durable steel and thick piping;
  • tutorial in the kit;
What I didn’t like:
  • short term of warranty;

#11 Ecosmart ECO 18 Electric Tankless Water Heater

Ecosmart ECO 18 Electric Tankless Water Heater

If you are searching for a heater at a low price, you got it. The manufacturer promises the durability of materials and high quality in general. A whole body is covered with a rustproof finish. The construction is fully eco-friendly and works with natural gas. You can save money thanks to an automatic system that turns off when you don’t use it. There are a lifetime warranty and a tutorial on how to use it in the kit. Put off all your doubts and feel free to order!

What I liked:
  • low price;
  • durability of materials;
  • covered with a rustproof finish;
  • eco-friendly;
  • works with natural gas;
  • automatic system;
  • lifetime warranty;
  • tutorial «how to use»;
What I didn’t like:
  • none;

#12 Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Outdoor Portable Gas Water Heater

Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Outdoor Portable Gas Water Heater

This heater is good for outdoor use. You can take it to the family camping if you like a hot bath. There is no need in any additional details because the showerhead comes in the kit. The process of installation is easy both for beginners and professionals, but the manufacturer also sends a helping tutorial. The good has a compact size and lightweight. It allows taking a minimum place. A multiple-protection system takes care of customers’ safety. The hot water is always under your hand with this device. It is a perfect decision for all outdoor activities, summer cottages, small flats, or for washing animals on the background. The innovation technologies save electricity and minimize your costs. The manufacturer offers great customer service that is always ready to solve all your problems.

What I liked:
  • good for outdoor use;
  • no need in any additional details;
  • the process of installation is easy;
  • helping tutorial;
  • compact size;
  • lightweight;
  • multiplied protection system;
  • multifunctional;
  • save electricity and minimize your costs;
  • great customer service;
  • low price;
What I didn’t like:
  • doesn’t fit for a big house;

Conclusion

The outdoor water tankless heater is a necessary part of modern life. It creates comfortable climate conditions anywhere you wish. Thanks to this device you have an opportunity to enjoy a hot shower. New models allow forgetting about any limits. They can heat as much water as you need and minimizes electricity costs. A compact-sizes good can be installed anywhere you want. Especially I use the same heater as number 1 for long years and I am fully satisfied.

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