Best Propane Tankless Water Heater

Searching for the beat propane tankless water heater?

I’ve reviewed the top models available and after reading this article you will know my recommendations.

Everyone needs a hot water heater at their home to have hot water on demand for washing dishes, doing laundry, or taking a shower or bath. However, not all hot water heaters are the same and some are definitely better quality than others. When you are interested in buying the best propane tankless water heater, then you’ll want to read this guide. I have gathered all of the information that you need to make an informed decision about what propane tankless water heater is the best option for your needs so that you get exactly what you need and don’t overspend.

Check out the quick list below for links to customer reviews and prices for the best propane tankless water heater, or read on for the full review:

  1.  Vevlor 18L Propane Hot Water Heater Instant Boiler
  2.  Takagi T-KJr2-IN-LP Indoor Tankless Water Heater
  3.  Eccotemp i12-LP Water Heater GPM
  4.  Eccotempt FVI12-LP Liquid Propane Gas Tankless Water Heaters
  5.  Marey Power Gas 10L 3.1 GPM Propane Gas Tankless Water Heater

There are a few things that you will need to consider when shopping for a tankless hot water heater so you can be sure that you find the right one for your family. I think that one of the most important things to consider is your hot water demand and the flow rate of the water heater. You don’t want to choose a heater that is too small for your needs, or you simply won’t have all of the hot water that you and your family wants. 

Additionally, consider the size of the water heater and where you are going to install it. While tankless water heaters are, in general, small and compact, if you have limited space, then you are going to want to really look for a water heater that is designed to be small enough to fit into your area.

Benefits of Having a Quality Tankless Water Heater

I find that there are a number of advantages that you can enjoy when you purchase a propane tankless water heater, making them a great choice in a number of circumstances. They can be expensive upfront, but you will quickly make this money back. Not only are they generally less expensive to install than water heaters that are electric heat pump, but they perform better year after year. 

These water heaters will quickly heat your water without any delay and since they don’t preheat water before you need it, there isn’t any standby loss of the heat. This means that you’re not wasting energy heating your water and that you can rely on having fast and on-demand hot water at all times.

Additionally, these water heaters are better for the environment. They don’t produce nearly as many carbon emissions as electric units do. Not only does this ensure that you’re not overpaying to heat your water, but it also helps the environment at the same time.

They also save space, since they are significantly smaller than traditional water heaters, and you never have to worry about a buildup of rust or upscale inside the tank. This means that you will be drinking and bathing in clean and pure water all of the time. 

What to Look For

To ensure that your new propane water heater isn’t costing your more than you want to pay and that it is good for the environment, you will want to look for one that has an Energy Star rating. While you may need to spend more for a water heater with this designation, you can rest easy knowing that you will save money over time and that you won’t have to worry about how your water heater is affecting the environment. 

Additionally, you need to consider the minimum and maximum BTUs of the water heater. This will give you an idea of how much heat the heater will be able to add to the water. If you live in an area where the stored water that you are going to be heating up is incredibly cold, then you will want to look for a heater with more BTUs, as this will ensure that it can easily heat up the cold water.

Some models have an LCD panel, which makes monitoring and changing the temperature as well as keeping an eye on the GPM easy.

How to Best Use Your Tankless Propane Water Heater

Once you have selected the right size for your home, then you can install your water heater and make sure that the temperature is set correctly. 

Adjusting your temperature is generally very easy, especially on models that have an LCD panel. Dials are less efficient, but still make it possible to adjust the temperature. Once you have determined the temperature that you want, then you can easily monitor it on heaters with LCD panels, making adjustments as necessary when the weather changes. 


Just like with any type of propane powered equipment, you need to be careful when using your new water heater. It’s important that you make sure to place it in an area where it can easily vent and that you take time to check the connections before using your heater.

Propane is generally fairly easy to use, and these water heaters are simple to set up, but that doesn’t mean that you should rush the process. I think that taking time to check the condition of your water heater and its connections to your propane source on a regular basis is important.

Best Propane Tankless Water Heater

Vevlor 18L Propane Hot Water Heater 4.8GPM 36KW Tankless Instant Boiler

Not only is this hot water heater incredibly easy to install in your home or cabin, but it is designed with plenty of safety features in mind to ensure that you and your family will be safe when it is running. Because it can be installed in your home or on an exterior wall, it’s a great option in most any home.


        Automatic shutdown when there is an unexpected flameout

        Excessive high-water pressure causes the unit to decrease pressure

        Features anti-freezing apparatus

        Can be hung or mounted easily

        Powered by two D batteries, which is great for off-grid situations


        Connectors are sometimes low quality and can break during installation

        Flow can be an issue when being used from more than one location in the house

Takagi Indoor Tankless Water Heater

This small, propane, tankless water heater is a great option for smaller homes, but will just as easily heat enough water for a family in a medium-sized home, as well. Thanks to the low emissions and how hot it is possible to get the water through this unit, this is a great option for any family who wants hot water on demand, but wants to make sure that they are not wasting propane when heating up their water.


        Automatically varies flame size for correct water heating

        Has 140,000 BTUs

        Small size is great for apartments and small homes

        Incredibly lightweight and easy to install

        Heats water up to 167 F


        Will sometimes fail to light

        Internal copper pipes have been known to burst

Eccotemp i12-LP Water Heater GPM

This hot water heater is great for any home where users will be running water from more than one point at once. It’s easy to track the temperature of the water, as well as the water flow, thanks to the LCD screen. The sleek modern design makes it a great option when it will be installed out in the open instead of hidden in a garage or closet.


        LCD temperature display

        Has a flow capacity of 3 GPM

        Only uses propane when the water is turned on

        The fully automatic temperature controls make monitoring water easy

        Black casing is attractive and protects the heater


        Can be difficult to get the right temperature for your home

        The heater tends to be noisy

Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters

This small hot water heater is a great option in an off-grid situation where you want to make sure that you will have hot water on demand, but won’t be placing a lot of demand on the heater. Thanks to the great temperature display, users can easily check their hot water heater and make any necessary adjustments to ensure that they are saving money and not wasting propane.


        It’s incredibly easy to make adjustments to the temperature

        Digital temperature display is easy to read

        Designed to emit minimal noise

        Only activates when in use, which saves propane

        Runs on just 110 V


        The heat exchanger tubing can easily spring leaks

        Low-flow sinks won’t trigger the hot water heater to run

Marey Power Gas 10L 3.1 GPM Propane Gas Tankless Water Heater

Not only is this hot water heater incredibly easy to install, but because it doesn’t require any electricity to run, it’s a great option for off-grid situations or homes that tend to lose power on a regular basis. It easily heats up even cold water without delay, allowing everyone in the family to take a hot shower without fear of running out of water. Additionally, the small size makes it ideal in tiny homes or cabins.


        Incredibly easy to install

        It’s easy to adjust the water temperature

        Compact design is great for smaller homes

        Doesn’t require an electrical connection

        Provides up to 3.1 GPM


        Requires a lot of flow to start heating the water

        Very difficult to remove batteries from the panel

I think that the Eccotemp i12-LP water heater 4 GPM Black is a great tankless propane water heater that is great for most homes and families. Not only does this water heater look great in any space, which is wonderful when it won’t be hidden away, but it features child locking technology to ensure that children can’t change the settings on the heater. Additionally, the touch screen ensures that you can easily make adjustments to the settings on the water heater without a lot of trial and error, which is common with water heaters that rely on a dial.

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