4 Best Outdoor Propane Tankless Water Heater Reviews & Guides

The outdoor propane tankless water heaters are mainly powered by propane, and you can easily install them outdoors. When compared with the indoor tankless water heater, you don’t need to install any kind of venting system with these ones. But of course, there are a few instructions that you need to follow for selecting the best outdoor propane tankless water heaters and installing them as well. You can check out the following reviews that we have provided here:

Best Outdoor Propane Tankless Water Heaters:

You can divide outdoor propane tankless water heaters into two types: large size type and the portable type. The water flow rate and the working performance of both these types differ to a large extent. We have tested and analyzed a lot of tankless water heaters and listed top 4 outdoor propane tankless water heaters so that it can be made easy for you to select the best and the most suitable one for you.

1. Eccotemp L10 Portable Outdoor Tankless Water Heater:

[The Portable One]

Eccotemp L10 Portable Outdoor

Key Features:

  • Rain Cap Equipped:

The cause for its 1st position on this list of ours is the rain cap it has. This machine is capable of protecting the heating unit in the bad weather. It is also very easy to remove it away when you start finding it unnecessary.

  • Portable Design:

This machine is the portable outdoor propane tankless water heater. It is also very lightweight, which makes it easy for you to carry it with you and install it anywhere you are camping or while traveling as well. Because of the special using applications it comes with, the water flow rate is quite low, just 2.6 GPM, this isn’t appropriate for the middle or large family usage.

  • Large Temp Range:

The temp range of this device is between fifty and one hundred and forty degrees Fahrenheit. It is able to supply heated water constantly for the users. You will need 2D batteries for ignition. For safety, the twenty minutes shut-off system that comes with will assist you in turning off the device automatically when it runs longer than twenty 20 minutes.


  • Lightweight for the easy carrying
  • Low water pressure needed
  • Automatic turn off the system
  • Simple operated temp control
  • Rain cap protection available in the bad weathers


  • It’s appropriate only for the tiny or camping use.
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2. Rinnai V65EP 6.6 GPM Outdoor Tankless Propane Water Heater:

[Ideal One For The Middle Size Family]

Rinnai V65EP 6.6 GPM

Key Features:

  • 6 Gallons Per Minute Water Flow Rate:

The water flow rate of this water heating unit can reach 6.6 GPM. If you live in a warmer area, then this device can support one bathroom or even two bathrooms, and you can still make use of your kitchen faucets at the same time.

  • 82 Energy Efficient:

This tankless water heater provides 0.82 thermal efficiency. It is quite high and is capable of saving a lot of money and energy for you. The max British Thermal Units is 150,000, and it’s said by the Rinnai Company that the 1/2 inch pipe accessible.

  • Remote Control:

This water heating device can also support remote control. This feature makes it easy for you to control the water temp inside your house. And the temp lock inserted assists in avoiding the unintentional touch of its screen.


  • Low NOx design
  • Temp lock and remote control
  • Secure installation certificated
  • Low working noise
  • Improved scale detection


  • Cold water sandwich
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3. Rheem RTG-95XLP Outdoor Tankless Propane Water Heater:

[The Most Powerful Tankless Water Heater By Rheem]

Rheem RTG-95XLP 2020 tankless water heater

Key Features:

  • Suitable For The Whole-House Usage:

Because of the powerful performance and the large water flow rate this machine provides, it is an ideal whole house propane tankless water heater for you to choose. It can really work on power ranging from 11000-199900 British Thermal Units.

  • 5 Gallons Per Minute Of Water:

The water flow rate of this device is very high, reaching up to 9.5 GPM. When you cascade numerous of them together, you can also utilize them as commercial tankless water heaters. It is capable of supporting three to four bathrooms in the warm regions and two bathrooms in the cold regions. You can also make use of your kitchen faucets simultaneously.

  • Large Temp Range:

The max temp of this water heating device is one hundred and twenty degrees Fahrenheit, while it’s said that the max temp can reach as high as one hundred and forty degrees Fahrenheit using the remote control, but you have to purchase an extra remote controller if you require.


  • Both propane and gas can be utilized
  • Remote control accessible
  • Extremely large water flow rate
  • Ten years of warranty
  • High energy efficient


  • You will need a professional to install this system.
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4. Camplux 5L Outdoor Portable Propane Tankless Water Heater:

[Top Tankless Water Heater For The Camping Use]

Camplux 5L Outdoor Portable Propane Tankless Water Heater 2020

Key Features:

  • Simply Operated Water Temp:

Two buttons are set on its control panel; one button is for the water flow while the other one is gas. You can switch this device on and off rapidly for controlling the water flow on/off. The temp range of this machine is between 46.4-114.8 degrees Fahrenheit.

  • 32 Gallons Per Minute:

The water flow rate of this propane tankless water heater is the lowest, reaching 1.32 GPM. So we don’t recommend you make use of this unit for home-usage. It’s an ideal portable propane tankless water heater for all the people out there who love traveling and camping. You can also make use of this unit as a machine for bathing animals like your horses and dogs.

  • Stainless Steel Burner:

This unit is designed delicately even though it is a portable tankless water heater for traveling. The burner of it is created using stainless steel, along with the tinning copper material water tank. This device is highly corrosion resistance and heat resistance.


  • Anti-frozen protection system
  • Lowest water pressure required, just 2.5 PSI
  • Heat resistance and corrosion resistance
  • Stainless steel burner
  • Simple operation


  • Appropriate only for camping use or outdoor travel.
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Pros And Cons Of The Outdoor Propane Tankless Water Heater:


  • Can save space indoor
  • No need to fit any kind of extra venting kits
  • Environmentally friendly
  • A variety of shapes and specifications can be selected
  • Short waiting time


  • Hard to install
  • Need to take care of the bad weather conditions

Tips On Selecting The Best Outdoor Propane Tankless Water Heater:

Consider the following points while choosing an outdoor propane tankless water heater for you:

  • Strong Exhaust Type:

Choose the one with the strong exhaust, which lets the waste gas out forcefully. None of the waste gas is left indoor. Thus this device is an ideal choice for the propane and gas tankless water heaters.

  • Freeze Protection:

As the outdoor propane tankless water heaters are installed outside, the bad weather conditions will simply do harm to the device and get it stopped. Particularly when it is utilized in the colder regions, the outside temp can get so low that the water is simply get frozen. The tankless water heaters with this feature will assist in protecting the unit and prolong the using time of the device.

  • Energy Efficient:

As you already know that the outdoor propane tankless water heaters are powered by the propane, high energy efficient device will assist you in decreasing the heating charges to a great extent.

  • The Waiting Time:

For the outdoor tankless water heater, you have to install right outside your bathroom wall, the waiting time of the heated water can be comparatively short. But for the unit itself, the waiting time for the heated water varies with diverse machines. A few can take just five seconds, while others require one or even two minutes for the heated water to flow out. In such a procedure, a big amount of the cold water is wasted, and your water bill will, of course, be added according to that. Therefore, selecting a short waiting time tankless water heater can also assist you in saving you cash on the bills.


This Propane Tankless Water Heaters that we have mentioned above are proved to be highly trustful and reliable. They’re exceptional in one way or another but also have some cons. Before purchasing, you ought to make certain whether the features of these units suit the house conditions you live in.

If you really want to know more about these units or have more questions, then you can simply Contact us or check them out on Amazon.