Best Propane Tankless Water Heaters of 2017 : Reviews & Top Picks

An in-depth guide to the 8 best propane tankless water heaters.

Some tankless water heaters are better than others. Here's a quick guide to the best of the best.

I've written many propane tankless water heater reviews in my time, but at the end of the day, it all comes down to value. What will save my customers the most money? What will provide my customers with the most power? In short, what do I consider the very best products on the market?

Comparison : 
Best Propane Tankless Water Heaters

Here you can take a quick look at the features ​offered by the different propane models.Overall,the best propane tankless water heater award goes to Takagi T-KJr2-IN-LP and the best value for money award goes to Eccotemp FVI-12-LP .



Flow Rate



 # Best  of the Best 

Takagi T-KJr2-IN-LP review

Takagi T-KJr2-IN-LP

6.6 GPM


Check Price

 # Best Value 

Eccotemp FVI-12-LP propane review

Eccotemp FVI-12-LP



Check Price

 # Best Budget 

Eccotemp L5 review

Eccotemp L5 Portable

1.6 GPM


Check Price

# Also Great 

Takagi T-KJr2-IN-LP review

Takagi T-K4-IN-LP



Check Price

# Also Great 

Takagi TH3DV TH3 Series 199000 review

Takagi TH3DV TH3 Series

10 GPM


Check Price

# Also Great 



9.5 GPM


Check Price

# Also Great 

Rinnai V65EN

Rinnai V65EP

6.6 GPM


Check Price

# Also Great 

rinnai rl94ep review

Rinnai RL94eP

9.4 GPM


Check Price

Propane Tankless Water Heaters Reviews

I've put together a few propane tankless water heater reviews to help you make up your mind. Good luck, and happy hunting!

- Best Propane Tankless Water (Overall) -

Takagi T-KJr2-IN-LP Indoor

 When it comes to all-purpose tankless water heaters, it's hard to beat the
T-KJr2-IN-LP. It's a cut above the rest in everything from power to price, and it's a unit that will be in your family for years and even decades to come. 

Takagi T-KJr2-IN- review

Rating : 4.8/5

Why is it our top pick ?

Let's start with raw numbers. The T-KJr2-IN-LP is no slouch, delivering up to 6.6 gallons per minute (GPM) and requiring only 140,000 BTUs to operate. This translates to an 81-83 percent energy factor depending on where you live and how often you use your unit.

While none of these numbers are the individual best for propane tankless water heaters, it's hard to beat them when they're all considered together.

For example, other units may offer a higher GPM but require more BTUs, or they may have a better energy factor in exchange for a lower flow rate. The T-KJr2-IN-LP makes a name for itself by offering good numbers for all its features.

Speaking of features, you won't lack for those either. The T-KJr2-IN-LP comes with dials, remotes and inlet and outlet thermistors to ensure that you're always getting the best performance from your unit.

As I've said before, it doesn't get much better than the T-KJr2-IN-LP. While it doesn't offer the most impressive numbers on an individual scale, they all come together to make an excellent all-around unit.

It's also a unit covered by a certified Takagi warranty for 10+ years, so it's a tankless water heater that will not only give but keep giving for years to come.

Here's an overview of its specs:

- 6.6 GPM
- 140,000 BTUs
- 81-83 percent energy factor
- 6.7 x 13.8 x 20.3 inches
- 38 pounds

In terms of power, value, longevity and energy efficiency, the T-KJr2-IN-LP is simply unbeatable.

Bottom Line​

All in all, I'd recommend the Takagi T-KJr2-IN-LP to just about everyone, and that isn't something I say lightly. Check it out on Amazon and see for yourself how much it can improve your life.

Further Information​

Takagi T-KJr2-IN-LP Indoor Tankless Water Heater, Propane

- Best Value for Money -

Eccotemp FVI-12-LP High Capacity​

 Perfect for smaller homes and apartments, the FVI-12-LP is a great choice for those who don't want or need excessive amounts of hot water. While it's more than enough to handle 1-2 bathrooms at a time, it won't guzzle power just for the sake of having power.

Eccotemp FVI-12 review

Rating : 4.6/5

Why is it our top value for money pick?

So what kind of performance can you expect from the Eccotemp FVI-12-LP?

- Its flow rate is 3 GPM, a number that's lower than average but still enough to run simultaneous showers.

- It requires only 74,500 BTUs, a number significantly smaller than other units that can demand upwards of 199,000 BTUs.

- It's 4 x 15 x 24 inches and 20 pounds, so it can be installed just about anywhere.

It should also be noted that the FVI-12-LP is a "point of use" unit, meaning that you can install multiple boxes throughout your home to boost their power. If you find that one FVI-12-LP isn't enough, simply buy another one! They're very affordable and not a strain on the budget at all.

Here's an overview of its specs:

- 3 GPM
- 74,500 BTUs
- 4 x 15 x 24 inches
- 20 pounds

Generally speaking, if you're in a small home or cottage, the FVI-12-LP is the tankless water heater for you.

Bottom Line

This is the unit you want for smaller homes and offices. Not everyone needs gargantuan amounts of hot water, and that's okay; the FVI-12-LP exists specifically for those who want to save money and energy with a unit that won't suck up power just for the sake of being powerful. It's a unit that will serve multiple bathrooms at once and not make a big deal out of it.

Don't let its small stature fool you. The FVI-12-LP has been satisfying customers since it first hit the market, and you can see those figures for yourself on Amazon. Get clicking!

Further Information

Eccotemp FVI-12-LP High Capacity Propane Tankless Water Heater​

- Best Budget Model -

Eccotemp L5 Portable​

 Don't care about the flow rate ? Love camping & outdoor activities ? Then this is for you.

L5 portable review

Rating : 4.7/5

The Eccotemp L5 is a portable model of tankless water heater that are loved by people who do camping and other outdoor activities. This is cheaply priced (below $200) just because of its low specs and does not compromise on its quality.

This model offers only a flow rate of 1.6 GPM and is meant for people who wants hot water wherever they go!

The L5 is ideal for camping trips,at the beach or other outdoor activities.

The L5 model offers high portability as it weights just 13 pounds and also comes with an outdoor shower.

The easy and hassle-free installation and portability makes it a best seller and loved by everyone.

Moreover, the L5 is also battery operated, so you can use it anywhere even if there is no electricity.

Bottom Line

If you are looking for a low flow rate model that'll still serve your hot water needs ​and also a portable one that supplies hot water whenever and wherever you need it,go for the Eccotemp L5 . Take a quick look at Amazon to see what other customers are saying.

Further Information

Eccotemp L5 Portable Tankless Water Heater and Outdoor Shower

 - Also Great​ -

Takagi T-K4-IN-LP Indoor

Expensive but the safest of all

Takagi T-KJr2-IN- review

Rating : 4.4/5

Families, this one is for you. The Takagi T-K4-IN-LP is one of the safest tankless water heaters on the market, making it the perfect choice for people with families or just general safety concerns.

For starters, it's a unit that allows for indoor installation. Many propane tankless water heaters have to be vented outside to prevent the build-up of harmful fumes, but the T-K4-IN-LP deals with those through a special condensing system that will keep you and your children safe as houses.

The T-K4-IN-LP also comes with several safety features like exhaust and water temperature controls. If you don't like what your unit is doing, simply turn a dial and change it.

Bottom Line

Best of all, however, is the fact that the T-K4-IN-LP is strong enough to handle all the demands of the modern family. You'll receive upwards of 8 GPM with this model, and you'll still enjoy an 82 percent energy factor to boot.

Check out the T-K4-IN-LP on Amazon. If you aren't amazed by its power and safety measures, I'll retire from the HVAC industry.

Further Information

Takagi T-K4-IN-LP Indoor Tankless Water Heater, Propane

 - Also Great​ -

Takagi TH3DV TH3 Series 199000 

When nothing but the strongest unit will do, turn to the TH3DV.

Takagi-T-H3-DV review

Rating : 4.5/5

Its biggest selling point is its flow capacity; you'll enjoy a whopping 10 GPM when you use this product, more than three times as much as other tankless water heaters on the market.

You'll also receive water pressure of 15-150 PSI.

Another excellent feature of the TH3DV is its internal condensing system.

Like several other Takagi models, it can also be installed indoors, so you won't have to worry about mounting it outside or installing expensive stainless steel venting kits.

Bottom Line

The absolute best thing about the TH3DV, however, is its self-diagnostic technology. It's a powerful whole-house unit that can regulate itself, and that translates into increased comfort and convenience for you.

Check out the TH3DV on Amazon. Let it wow you. Then come back and tell me what you think.

Further Information

Takagi TH3DV TH3 Series 199000 BTU Direct Vent Indoor Whole House Tankless Water, Liquid Propane

​- Also Great -

Rheem RTGH-95DVLP Indoor Direct Vent

Another whole-house unit that knows how to get the job done

Rheem RTGH review

Rating : 4.5/5

The RTGH-95DVLP is an amazing blend of power and energy efficiency. It's the unit you'll want to buy if you're looking for something eco-friendly that will nonetheless deliver the hot water you need for a busy family.

The biggest draw of the RTGH-95DVLP is its performance. It delivers 9.5 GPM and can serve up to four bathrooms at once, so whether you're showering, running the dishwasher or doing a load of laundry, this unit will provide the strength you need.

Even more impressively, the RTGH-95DVLP boasts a 94 percent energy factor and can save you hundreds on your utility bill. You usually have to sacrifice energy efficiency with high-powered units, but the RTGH-95DVLP operates on a special low-NOx system that condenses its fumes and requires less energy for venting.

Bottom Line

So there you have it: The RTGH-95DVLP is great for power and green living.
Click on over to Amazon and see its specs for yourself!

Further Information

Rheem RTGH-95DVLP 9.5 GPM Indoor Direct Vent Tankless Propane Water Heater

​- Also Great -

Rinnai V65EP 6.6 GPM Outdoor Low NOx

As a newbie-friendly model, the V65EP is easy to install and even easier to use.

rinnai v65 review

Rating : 4.5/5

Are you interested in making the switch to a tankless water heater but unsure if it's the right choice for you? Or maybe you're just nervous about ripping out your water tank and replacing it with a box. The V65EP is the product for you.

You won't have to worry about complicated controls and operations with this unit; everything can be adjusted through the remote control, and it even comes with special locking functions to prevent the accidental change of pressure or temperature.

It also offers all the power you expect from the Rinnai brand, delivering up to 6.6 GPM and requiring only 150,000 BTUs. These are great numbers for a propane unit.

Bottom Line

All in all, the V65EP is one of the best propane tankless water heaters on the market, and I recommend that everyone read about it further on Amazon. You might be surprised by how much you're taken with it.

Further Information

Rinnai V65EP 6.6 GPM Outdoor Low NOx Tankless Propane Water Heater​

​- Also Great -

Rinnai RL94eP Propane Tankless Water Heater

The RL94eP is a rare breed that can be installed in both residential and commercial settings.

rinnai rl94ep review

Rating : 4.5/5

It doesn't matter if you're looking for hot water at home or in the office; the RL94eP will get the job done. In fact, it even has a bigger temperature range for those who are installing it at work!

- In residential settings, the range is 98°F - 140°F
- In commercial settings, the range is 98°F - 185°F.

You'll also enjoy other features like scale detectors and digital controllers with error code indicators. Not only will the RL94eP keep you in hot water, but it'll also keep you safe.

Bottom Line

Overall,the RL94eP is an expensive option for residential use ​but if you are looking for a long term commercial tankless water heater,then this one is for you!

Oh, and I forgot to mention one other thing. The RL94eP offers a whopping 9.4 GPM. Now that's a number worth a second look on Amazon, don't you think?​

Further Information

​Rinnai RL94eP Outdoor Propane Tankless Water Heater, 9.4 Gallons Per Minute

Let's cover the basics of tankless water heaters to make sure we're all on the same page.​

What Are Propane Tankless Water Heaters?

Most homes have a hot water tank. It's usually located in a basement or closet, and it keeps hot water ready and waiting to be delivered through your pipes whenever you turn on your faucet.

Tankless water heaters work a bit differently. Instead of storing hot water remotely, it simply heats up cold water as it travels to your sink. This means you won't waste energy by keeping basement water hot for no reason, and it's also more hygienic since your water isn't sloshing around a rusty tank and picking up sediments along the way.

There are three main types of tankless water heaters:

  • Natural Gas
  • Propane
  • Electric

What Are the Advantages and Disadvantages of Propane Tankless Water Heaters?


  • You'll save money. Without a water tank constantly maintaining the temperature of its stored, unused water, you can save hundreds on your energy bill each year.
  • You'll help the environment. Again, water tanks are big and wasteful, and tankless water heaters eliminate them entirely.
  • You'll improve the sanitation of your water delivery system. Say goodbye to miniscule particles inside your tank mixing with your drinking water!


  • Tankless water heaters cost a bit of money upfront. You'll have to consider them an investment for the future.
  • Since they heat your water using a live flame, propane units require special venting systems to prevent the build-up of harmful fumes within your home. These vents can cost time and money to install and maintain


As you can see, there's a lot to keep in mind as you browse tankless water heaters. Try not to make a hasty decision. Do your research and look at all factors before signing on the dotted line.

>> Amazon Discount Link for Propane Tankless Water Heaters <<

- Best Propane Tankless Water (Overall) -

Takagi T-KJr2-IN-LP Indoor

The best of the best propane tankless water heater - 2017​

Takagi T-KJr2-IN- review

Rating : 4.8/5

Click Here to Leave a Comment Below 0 comments