Outdoors

Best Outdoor Tankless Water Heater - Get Hot Water On Demand!

Looking for an outdoor tankless water heater? Check our top picks for propane models, both portable and permanent installations.

Deborah Clarke
Aug 30, 2022
19 min read
Seasonal-Fall
Best Outdoor Tankless Water Heater | Rheem Propane Unit | Photo by Rheem | Shared by FavReviews

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If you love spending time outdoors, then you know how important it is to have a good water heater. After all, there's nothing worse than coming back to your campsite after a long day of hiking only to find that your water is cold.

Or, if you have a son or daughter who takes REALLY LONG showers, and you know your current water heater for the house just won't keep up anymore.  There is a higher efficiency outdoor tankless water heater that's just for you.

These are two instances when a tankless water heater could help so you never have to worry about running out of hot water again. These heaters are designed to provide hot water on demand, meaning you can take a shower or do the dishes no matter where you are. Best of all, they're highly efficient, so you won't have to worry about running out of hot water.

There are a couple of main considerations when purchasing a tankless water heater.

1) Do you want your tankless water heater to be indoors or outdoors?

2) Will your tankless water heater warm the water by propane or natural gas?

In this buyer's guide, we'll take a look at the best outdoor tankless propane water heaters on the market today.  We'll discuss the different features to look for and give you our top picks for the best tankless water heater for your needs.

If you prefer you can switch to our review with indoor installations here.

If you prefer you can switch to our review on installations using a natural gas tankless water heater (indoor or outdoor).

NOTE: In all cases you should contact a professional installation technician to help you with the installation.

Looking for the best outdoor tankless water heater?

If you love spending time outdoors, then you know how important it is to have access to warm water. Whether you're camping or hiking, having a reliable water heater can make all the difference. But with so many options on the market, it can be tough to know which one is right for you. That's why we've put together this list of outdoor water heaters. We'll help you find the perfect option to suit your needs, so you can enjoy all your favorite outdoor activities with ease.

When it comes to finding the best tankless water heater for outdoors, there are a few things to keep in mind.

  • First, you'll want to consider the climate you're in. If you live in a colder region, then you'll need a heater that can provide enough hot water to meet your needs.
  • Additionally, you'll want to think about the size of your family or group. A larger unit will be able to accommodate more people, while a smaller one will be more compact and easy to transport.   Or, are you looking for the best hot water heater for outdoor shower to take camping, or to the hunt camp, with you?
  • Finally, you'll want to decide how much you're willing to spend. With so many options on the market, there's sure to be a water heater that's perfect for your budget.

Once you've considered all of these factors, it's time to start shopping around. Take a look at our top picks for the best outdoor tankless water heaters and find the perfect option for your needs. With our help, you'll be able to enjoy all your favorite outdoor activities without worry.

How We Choose the Best Outdoor Tankless Water Heater

You want to be able to enjoy the outdoors without having to worry about not having access to warm water.  But where do you start?  It can be tough to figure out what the best outdoor tankless water heater is, especially when there are so many on the market. How do you know which will have the right combination of features and performance?

We've done the research for you. After reading through hundreds of reviews on Amazon, our team has compiled a list of the top outdoor water heaters using propane;

  • some that run on propane, portable for the campers and other portable uses;
  • some that run on propane, permanent installation for ranches, horse barns, air bnb's, farms and other stationary outdoor places that use propane.

We aim to make your decision-making process as easy as possible.  We know the only thing better than finding the perfect product when you need them, is the peace of mind that comes with knowing they have positive reviews after being purchased and tested by other families just like yours.

We want to help you have the best purchasing experience possible, so take a look at our family 'favs' and get the best outdoor tankless water heater possible.

In this article we reviewed OUTDOOR [Both Portable and Installed Units] Propane Tankless Water Heaters.

EDITORS TOP PICK  for PORTABLE - Our Favs

Our top pick for the best outdoor tankless water heater is the Eccotemp L10 Portable Tankless Water Heater. This unit is perfect for campers who love the outdoors and need a reliable way to get warm water on demand. With a simple and easy-to-use design, the Eccotemp L10 is perfect for any camper who wants to enjoy hot water without having to worry about running out. Thanks to its compact size, the Eccotemp L10 can easily be stored in a camper's RV or even in a storage shed when not in use.   This is the best hot water heater for outdoor shower.

Eccotemp L10 [3 GPM] Portable Tankless Water Heater

Portable, Propane Outdoor Tankless Water Heater

Portable, Propane Outdoor Tankless Water Heater

Eccotemp L10 [3 GPM] Portable Tankless Water Heater

Check Price on Amazon

WHY IT’s ONE OF OUR FAV’s

The Eccotemp L10 Portable Tankless Water Heater is perfect for camping, hunting, or anywhere else you need instant hot water.

It's one of our favorites because it runs on a standard 20 lb. liquid propane tank and features an electronic ignition. The unit is also equipped with a safety shut-off that is activated when the unit runs longer than 20 minutes or is tilted more than 45 degrees in either direction.

We also like that the Eccotemp L10 is easy to connect to any standard garden hose, with its low-pressure activation of 20 PSI.

It also has a hot water output of 3 gallons (about 11 litres) per minute and can achieve a temperature range of 50 – 120 degrees Fahrenheit.

FAV FEATURES

The Eccotemp L10 Portable Tankless Water Heater is perfect for camping, hunting, or anywhere else you need instant hot water. Its electronic ignition and safety shut-off feature makes it a great choice for those looking for a reliable and easy-to-use outdoor water heater.

The water heater size is 32.25 x 14 x 7.75 inches.

The hot water output of 3 gallons per minute and temperature range of 50 – 120 degrees Fahrenheit make the Eccotemp L10 a great choice for those in need of instant hot water.

A shower head, 1/2" CSA certified gas regulator and hose, mounting hardware and a quick connect and adapter for garden hose are all included.

The unit is made for use outdoors, just remember to prepare it for winter freezing weather (according to the manual that's included) and protect it from the rain if you can.

Camplux 2.64 GPM Portable Tankless Propane Outdoor Water Heater, with Shower Head and Water Pump Pack

Propane, Portable Outdoor Tankless Water Heater

Propane, Portable Outdoor Tankless Water Heater

Camplux 2.64 GPM Portable Tankless Propane Outdoor Water Heater, with Shower Head and Water Pump Pack

Check Price on Amazon

WHY IT'S ONE OF OUR FAVS

We like the Camplux 2.64 GPM Portable Propane Tankless Water Heater because it's lightweight, portable and comes with a quick connect propane regulator, extension shower hose, pressurizer water pump and pipe strainer. CSA safety standard approved, this propane tankless water heater has 6-in-1 safety protections, making it a great choice for campers who want on-demand hot water while enjoying the outdoors. The compact design and mounting bracket make it easy to install and use, and the internal microprocessor prevents the water  temperature from going above +122 ℉, protecting against scalds.

FAV FEATURES

It's easy to use, and comes with a shower hose and shower head. So you can enjoy instant hot water, even if you're not familiar with plumbing.

The 11.5 feet extension shower hose means you can enjoy instant hot water, even if you're not near a water source.  With the BW264 propane tankless water heater, you can have on-demand hot water, whenever you need it.

The 5 feet brass quick-connect natural gas regulator means you can easily connect the water heater to a propane tank and the US standard garden hose fittings make it easy to hook up the water heater, even if you're not familiar with plumbing.

The 1 pc water pump and pipe strainer help to keep your water clean and free of debris.   The 2 pc, 6.56 feet extension hoses mean you can extend the reach of the water heater, so you can enjoy hot water even if you're far from home.

Camplux propane hot water heaters focus on innovative combustion technology and advanced multiple protection systems to ensure your safety. So you can feel confident using this water heater.


Looking for an Outdoor Tankless Water Heater (run by Propane, but not necessarily portable ) for efficiency at your House, Barn?

PERMANENT INSTALLATIONS

Propane is a very common fuel source for many people who love the outdoors and country living. It's also very easy to find and purchase propane, making it a great option for those who want to get warm water on demand without having to worry about finding someone to refill their tanks.

There are many different types of tankless water heaters on the market, so it can be tough to decide which one is right for you. However, if you're looking for an outdoor propane tankless water heater, we've got you covered. We've compiled a list of the most efficient outdoor propane tankless water heaters on the market, so you can find the perfect one for your home and lifestyle.

Whether you're looking for a compact unit that can be easily stored away when not in use (see the portable units above), or a powerful model that will provide plenty of hot water for your entire family, we've got you covered. We've even included a few budget-friendly options, so you can find the perfect outdoor propane tankless water heater without breaking the bank.

No matter what your needs are, we're confident that you'll find the perfect outdoor propane tankless water heater on our list.

The following units are not portable, these are larger units meant to be affixed to an outside wall with access to propane and a waterline (or hose).

Contact a local installation technician for assistance installing your unit.

Rinnai RL94EP Tankless Hot Water Heater, 9.8 GPM, Propane, Outdoor Installation

9.8 GPM Outdoor Tankless Water Heater (Propane, Not Portable)

9.8 GPM Outdoor Tankless Water Heater

Rinnai RL94EP Tankless Hot Water Heater, 9.8 GPM, Propane, Outdoor Installation

Check Price on Amazon

WHY ITS ONE OF OUR FAVS

The Rinnai brand has long been one of the top manufacturers of tankless water heaters.  They have a manufacturing facility in the U.S.A.  They have advanced automation and precision assembly processes and all factories are ISO 9001 and/or ISO 14001 certified.   Rinnai tankless water heater models are available for both indoors and outdoors, propane or natural gas.

This top of the line outdoor model, using propane, is the Rinnai RL 94EP Tankless Hot Water Heater.  The Rinnai RL94EP is a highly efficient outdoor tankless water heater that will save you space and energy.  It provides optimal water pressure with a high-performance 9.8 GPM hot water flow rate, so you'll always have a powerful, constant stream.

Rinnai RL94EP 9.8 GPM Propane Outdoor Tankless Water Heater

FAV FEATURES

With the Rinnai RL94EP hot water will always be available to you, no matter how much you need or how often you need it.  Rinnai tankless water heaters use smart technology and save energy by only heating water when needed.

The dimensions of this Rinnai are 17.5 x 13 x 31 inches.

As previously mentioned, it provides optimal water pressure with 9.8 GPM.

Its instant heating feature uses Circ-Logic technology to enable recirculation patterns that coincide with your typical habits, and its Wi-Fi monitoring creates hot water on demand.

It also comes with a 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively, so you can be confident in its quality and durability.

Camplux 16L Outdoor [4.22 GPM] Digital Display Propane Tankless Water Heater

4.22 GPM Outdoor Tankless Water Heater (Propane, Not Portable]

4.22 GPM Outdoor Tankless Water Heater

Camplux 16L Outdoor [4.22 GPM] Digital Display Propane Tankless Water Heater

Check Price on Amazon

WHY IT'S ONE OF OUR FAVS

This Camplux 16L Outdoor 4.22 GPM Digital Display Propane Tankless Water Heater is perfect for those who are looking for efficiencies!  With a digital display, this tankless water heater is easy to operate. This water heater is also great for those who are off-grid or in areas where electricity is not readily available. The Camplux tankless water heater is also equipped with innovative combustion technology and advanced multiple protection systems to ensure your safety. With a 4.22 GPM flow rate, this tankless water heater will provide you with on-demand hot water whenever you need it!

Camplux 16L Outdoor 4.22 GPM Digital Display Propane Tankless Water Heater

FAV FEATURES

The Camplux 16L is perfect for outdoor showers, installing it at your horse barn to wash the horses, or outdoors to wash your car, your pets, anything you want to wash outside.

The overall size of the Camplus is 17.32 x 7.87 x 27.56 inches.

The ideal hot water output is 4.22 GPM for the Camplux portable tankless water heater is 4.0~110.0 PSI.

It ignites with 2 D cell batteries (not included) so it makes it great for off-grid or other areas where electricity is not readily available.  Camplux propane hot water heaters focus on innovative combustion technology and advanced multiple protection systems to ensure your safety.

It's easy to use, and comes with a shower hose and shower head.  So you can enjoy instant hot water!

Rheem Mid-Efficiency 8.4 GPM Outdoor Propane Tankless Water Heater

8.4GPM Outdoor Tankless Water Heater (Propane, not Portable)

8.4 GPM Outdoor Tankless Water Heater

Rheem Mid-Efficiency 8.4 GPM Outdoor Propane Tankless Water Heater 

Check Price on Amazon

WHY IT'S ONE OF OUR FAVS

The Rheem Mid-Efficiency 8.4 GPM Outdoor Propane Tankless Water Heater is the perfect choice for those who are looking to save energy, save water, save money and save space.   We like that Rheem is a brand we all know and Rheem Manufactures in the USA.

The Rheem 8.4GPM Outdoor Propane Tankless Water Heater is a favorite because this water heater provides continuous hot water, so you can do the dishes, wash the laundry, give the pets a bath and still have hot water for a nice long shower. Additionally, this unit saves energy by heating water only when you need it and produces less greenhouse gas emissions.

With water savings setting enabled, this tankless water heater can save you up to 1,100 gallons of water per year.

Plus, the Rheem Mid-Efficiency 8.4 GPM Outdoor Propane Tankless Water Heater is designed to install outside your home, freeing up valuable storage space inside. This unit also includes built-in freeze protection down to -30˚F.

Rheem Mid-Efficiency 8.4 GPM Outdoor Propane Tankless Water Heater

FAV FEATURES

Rheem's 8.4 GPM Outdoor Propane Tankless Water Heater provides continuous hot water, so you'll never run out. This unit is also very energy efficient, automatically adjust the amount of energy required to heat the water you need.

This modulated technology increases efficiency and reduces energy consumption. Additionally, this unit promotes better air quality as it incorporates emission reduction technology for better air quality.

The overall size of the unit is 8.88 x 13.88 x 23.63 inches.

As noted earlier, the hot water output is 8.4 GPM for the Rheem Mid-Efficiency Outdoor Propane Tankless Water Heater.

All Rheem models meet or exceed stringent government standards in all 50 states.

There is no venting required for this outdoor model as it vents to the outside air.

Finally, this unit is very easy and convenient to control with a Rheem's tankless remote electronic thermostat that allows easy adjustment of water temperature ranging from 85˚F–140˚F in two-degree increments. The unit can also be turned ON or OFF simply by pressing the power button.

In addition, detailed diagnostics are digitally displayed whenever there is a need for service or maintenance.

Outdoor Tankless Water Heater FAQS


What is the best outdoor tankless water heater?

The Rinnai 9.8 GPM; RL94EP Outdoor Propane Tankless Hot Water Heater, based on our reviews is the best outdoor tankless water heater on the market.  Rinnai has long been a manufacturer of tankless water heaters for the North America market, and in 2017 they started manufacturing their tankless water heaters in Georgia, USA.

Another favorite is the Rheem 8.4 GPM Outdoor Propane Tankless Water Heater is the best outdoor tankless water heater on the market. It is energy efficient, easy to control, and does not require venting. Additionally, it meets or exceeds all government standards in all 50 states.


How does an outdoor tankless water heater work?

An outdoor tankless water heater works by heating water on demand, as opposed to storing hot water in a tank. This makes them more energy efficient and eliminates the need for venting.


What are the benefits of using an outdoor tankless water heater?

Some benefits of using an outdoor tankless water heater include the elimination of the need for venting, more energy efficiency, and an endless supply of hot water. Additionally, they take up less space than traditional water heaters.


How much does an outdoor tankless water heater cost?

Outdoor tankless water heaters typically range in price from $500 to $2,000. Although there are smaller outdoor portable units you will find for less than $150-$500 range.


How do I choose the best outdoor tankless water heater for my needs?

When choosing an outdoor tankless water heater, it is important to consider your hot water needs and usage patterns. Additionally, you should factor in the climate in which you live and the overall size of the unit.


How do I install an outdoor tankless water heater?

Installing an outdoor tankless water heater is typically a fairly easy process. However, it is always best to consult with a professional to ensure that the job is done correctly and safely.


How do I maintain my outdoor tankless water heater?

Maintaining your outdoor tankless water heater is important in order to keep it running properly. Some maintenance tips include regularly checking the unit for leaks, cleaning the filter, and descaling the unit every few years.  Always check the owners manual from the brand you have purchased for proper ongoing maintenance.


What are some common problems with outdoor tankless water heaters?

Some common problems with outdoor tankless water heaters include leaks, the unit not firing up, and the unit not providing enough hot water.


How can I troubleshoot my outdoor tankless water heater?

If you are experiencing problems with your outdoor tankless water heater, the first step is to consult the owner’s manual. Additionally, you can check for common problems such as leaks and blockages. If you are still having trouble, it is best to call a professional for help.


How do I decide whether to have an indoor or outdoor tankless water heater?

The decision of whether to have an indoor or outdoor tankless water heater typically depends on the climate in which you live. If you live in an area with cold winters, it is generally best to have an indoor unit. However, if you live in a warmer climate, an outdoor unit may be more ideal.

Hopefully, this has helped you to better understand outdoor tankless water heaters and how they can benefit you. If you have any further questions, please feel free to reach out to us and we would be happy to help.


Can tankless water heaters be outside?

Yes, tankless water heaters can be installed outside. There are models designed specifically for outdoors or indoors.  When choosing, it is important to factor in the climate when making this decision. If you live in an area with cold winters and freezing temperatures, it is generally best to have an indoor unit. However, if you live in a warmer climate, an outdoor unit may be more ideal.


What is the most reliable tankless natural gas water heater?

There are a few different brands that make reliable tankless natural gas water heaters. Some of these brands include Rianni, Rheem, and Bosch.

What is the best tankless water heater for a small home?

The best tankless water heater for a small home depends on a few factors, such as the number of bathrooms and the climate. However, some of the best tankless water heaters for small homes include the Rheem Performance Plus 40 Gallon Electric Tankless Water Heater and the Rinnai RL75iN Natural Gas Tankless Water Heater.


What is the best tankless water heater for a large home?

The best tankless water heater for a large home depends on a few factors, such as the number of bathrooms and the climate. However, some of the best tankless water heaters for large homes is the Rinnai RL94iN Natural Gas Tankless Water (Indoor Installation, Natural Gas).


What are condensing tankless water heaters?

Condensing tankless water heaters are a type of tankless water heater that is able to achieve a higher level of efficiency than traditional tankless water heaters. This is because a condensing tankless water heater captures the heat from the exhaust gases and use it to preheat the cold water entering the unit.


Is it better to have an indoor or outdoor tankless water heater?

The decision of whether to have an indoor or outdoor tankless unit typically depends on the climate in which you live. If you live in an area with cold weather and freezing winters, it is generally best to have an indoor unit. However, if you live in a warmer climate, an outdoor unit may be more ideal.


What are some of the benefits of having an outdoor tankless water heater?

There are a few benefits of having an outdoor tankless water heater. These benefits include saving space, being more energy-efficient, and providing hot water on demand.


What are some of the drawbacks of having an outdoor tankless water heater?

Some of the drawbacks of having an outdoor tankless water heater include the unit being more susceptible to freezing, the unit being more difficult to install, and the unit being less aesthetically pleasing.


How much does it cost to install an outdoor tankless water heater?

The cost of installing an outdoor tankless water heater typically ranges from $500-$1000. However, the exact cost will depend on a few factors, such as the type of unit, the brand, and the complexity of the installation.


How do I know if an outdoor tankless water heater is right for me?

The decision of whether to have an indoor or outdoor tankless water heater typically depends on the climate in which you live.

What are the pros and cons of tankless water heaters?

Tankless water heaters, also known as on-demand or instantaneous water heaters, provide hot water only as needed. They don’t have the standby energy losses associated with storage tank water heaters. Because they don’t have a storage tank, they are generally smaller and can be hung on a wall. This can free up valuable floor or basement space in your home.

Tankless water heaters can be run by propane, natural gas or electric. Propane or Gas-fired tankless water heaters are typically more energy-efficient than electric models.

Some pros of tankless water heaters include:

• They can save you money on your energy bill. Tankless water heaters only heat water when you need it, so you’re not paying to keep a tank of hot water warm when you’re not using it.

• They take up less space than traditional storage tank water heaters.

• They provide an endless supply of hot water. You’ll never have to take a cold shower again!

Some cons of tankless water heaters include:

• They require a higher initial investment. Tankless water heaters are more expensive than traditional storage tank water heaters.

• They may not be able to meet the hot water demands of multiple appliances at the same time.

• They require regular maintenance to keep them running properly.

If you’re considering a tankless water heater for your home, it’s important to weigh the pros and cons to decide if it’s the right choice for you.


Where can I find more information about outdoor tankless water heaters?

For more information about outdoor tankless water heaters, you can consult the owner’s manual or an online resource for each of the manufacturers.

PORTABLE PROPANE UNITS

a) Ecotemp

b) Camplux


OUTDOOR TANKLESS WATER HEATERS (installed outdoors)

a) Rinnai - Made in the USA

b) Camplux

c) Rheem

Additionally, you can contact the manufacturer directly.


So there you have it!

Whether you are looking for a Portable Outdoor Tankless Water Heater (run by Propane) or you are looking for a more efficient Outdoor Tankless Water Heater for your house, or barn (run by Propane), we have options for you.

The last thing you want is to run out of hot water. Finding the best outdoor tankless water heater can be a challenge, but we've got you covered.

PORTABLE UNITS

1) Eccotemp L10 [3 GPM] Portable Tankless Water Heater

2) Camplux 2.64 GPM Portable Tankless Propane Outdoor Water Heater, with Shower Head and Water Pump Pack

HIGHER EFFICIENCY INSTALLED OUTDOOR UNITS

1) Rinnai RL94EP Tankless Hot Water Heater, 9.8 GPM, Propane, Outdoor Installation

2) Rheem Mid-Efficiency 8.4 GPM Outdoor Propane Tankless Water Heater

3) Camplux 16L Outdoor 4.22 GPM Digital Display Propane Tankless Water Heater

We hope you found the information helpful and that it will help to make your purchasing decision easier and more confidently.

All you need to do now is tap the button to check the price.

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See you again soon.

The Fav Reviews Team

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