Best Propane Tankless Water Heater Reviews & Guide 2020

The Propane Tankless Water Heaters are quite the same as the natural gas ones; a few of these models are available in both natural gas water heater and propane water heater models. The propane tankless water heater is more environmentally friendly and can save more energy than the best electric tankless water heaters. If you are interested in buying a propane unit for your house and having trouble choosing the best one, then check out the reviews we have provided here.

5 The Best Propane Tankless Water Heaters You Can Get!

Indoor Water Heater
Takagi T-KJr2-IN-LP
Takagi T-KJr2-IN-LP 6.7 x 13.8 x 20.3 inches38 lbsCHECK ON AMAZON
Propane Water Heater
Rinnai RL94iP
Rinnai RL94iP 14 x 10 x 23 inches44.3 poundsCHECK ON AMAZON
Outdoor Water Heater
Rheem RTGH-95XLP Prestige Propane Outdoor Whole House Low NOx Condensing Tankless 9.5 GPM Water Heater
Rheem RTG-95XLP 18.5 x 9.8 x 27.5 inches82 poundsCHECK ON AMAZON
Camplux Portable Outdoor
Enjoy Camping CAMPLUX OUTDOOR Camplux 16L 4.22 GPM Residential Liquid Propane Outdoor Portable Tankless
Camplux Portable 11.4 x 4.3 x 14.8 inches14.11 poundsCHECK ON AMAZON
Liquid Propane Tankless Heater
Eccotemp FVI-12
Eccotemp FVI-12 24.8 x 15.2 x 6 inches33 poundsCHECK ON AMAZON

The Best Propane Tankless Water Heaters Reviews:

The following are a few of the best propane tankless water heaters available in the market. Go through each one so that you can be able to choose the best hot water heater that can fulfill your hot water requirements.

1. Takagi T-KJr2-IN-LP Tankless Indoor Water Heater:

The Takagi T-KJr2 series tankless heating machines are always the best selling models, no matter for the gas tankless water heater type or for the propane type. This tankless water heater provides the following features:

Takagi T-KJr2-IN-LP


  • Smallest And Lightest:

Among the Takagi line of tankless water heaters, this one is the most lightest and smallest, which makes it easy to install device.

  • 6 Gallons Per Minute: 

The flow rate that this model provides is the mid standard and might drop to three to five GPM if you live in a colder area. If you live in a warmer region, then this device can supply hot water to one kitchen faucet and two bathrooms simultaneously.

  • Temp Is Above 150 Degrees Fahrenheit:

The water temperature of this tankless device can reach up to 150 degrees Fahrenheit. This tankless water heater can fulfill all your house hot water perfectly. You can also control this machine remotely. But for that, you will have to purchase a remote controller.


  • Demands minimum maintenance
  • Digital remote control
  • Demands 140000 BTU (British Thermal Units) power input per hour, eighty-one percent energy efficiency
  • Lightweight
  • Ten plus years warranty
  • Simple installation


  • Light working noise
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2.  Rinnai RL94iP  Propane Tankless Water Heater:

The propane tankless water heaters by Rinnai are highly praised for its large flow rate and delicate design. It is said that you can make use of this tankless water heater for thirty years straight.

Rinnai RL94iP


  • Direct Power Venting:

This feature is utilized on this particular model, and a coaxial pipe is utilized for preventing utilizing air from getting inside and for cooling down the gas exhausted. And because of the closed design system, no warm or cold air from the outside is capable of letting in after the device is off.

  • Water Flow Rate:

This machine comes with a very large flow rate, which can reach up to 9.4 gallons per minute. If you are going to use this Tankless heating system in the warm regions, then it can supply hot water to 3-4 bathrooms at the same time but only to 2 bathrooms if you live a colder region. This device is powerful enough for supplying hot water constantly without any breaks, no matter if you are doing laundry or taking a shower.

  • No Standby Heat Loss:

The smart technology of this tankless machine enables this unit to heat your water only when you require it. It makes it possible that you don’t face any standby heat loss, which really plays a significant part in making this machine an energy-efficient device and a money saver.


  • No smell from the direct vent
  • Highly efficient
  • Longer service life
  • No standby heating loss
  • Powerful
  • Modulated burning permits less fuel utilization


  • Coldwater sandwich
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3. Rheem RTG-95XLP Tankless Outdoor :

You can make use of this water tankless heating unit for the mid-sizes family usage, it really frees the dilemma of fitting the venting kits because you can use this outside as well.

Rheem RTGH-95XLP Prestige Propane Outdoor Whole House Low NOx Condensing Tankless 9.5 GPM Water Heater


  • Energy-Efficient:

The power consumption of this unit can range from 11000-199900 British Thermal Units (BTU) per hour, and the thermal efficiency of this device is eighty-two percent. The freeze protection units are designed for protecting the device in the colder weather. But the company recommends it be utilized in the warmer regions.

  • 5 GPM Of Flow Rate:

This tankless water heating unit also comes with a large flow rate, which can reach up to 9.5 GPM . This tankless device can really supply hot water to multiple places in house ate the same time in the colder regions.

  • 120 Degrees Fahrenheit Temp:

The water temp of this tankless machine is 120 degrees Fahrenheit. It is said that you can also change this temp to 140 degrees Fahrenheit with a little change on your remote controller. However, you will have to purchase this remote controller separately.


  • Freeze protection included
  • Extra powerful than the others
  • Two gas options, one for the propane and the other for gas
  • Work flawlessly for the whole house
  • Electronic ignition


  • Have to be fitted by a professional
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4. Camplux Portable Outdoor Propane Tankless Heater:

This one is also a propane tankless heating system available in the market, and its cost is quite lower than the other whole house propane types.

Enjoy Camping CAMPLUX OUTDOOR Camplux 16L 4.22 GPM Residential Liquid Propane Outdoor Portable Tankless


  • Easy Operated:

There’re two buttons set on this device, one is for controlling the flow, and the other one is for the gas control. You can switch it on/off for rapidly controlling the flow starts and stops.

  • Lower Flow of  Water :

This device comes with a very low flow rate, which is only 1.32 GPM. But if you live in a tiny house or you like traveling, then this one is the best tankless machine for you. But it is not suitable for the whole house usage. The required water pressure is just 2.5 PSI (pounds per square inch).

  • Best Quality Materials:

The heating exchanger is created using the stainless steel material, together with the copper water tank. This unit is highly corrosion resistant and heat resistant. The max temp rise of this tankless propane water heater is 14.6 degrees Fahrenheit while the lowest is being 46.4 degrees Fahrenheit.


  • Compact size for the perfect outside usage
  • Low water pressure needed
  • The anti-frozen device included
  • Simple control buttons
  • Heat resistance


  • Can’t be utilized for the mid-sized house or whole house
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5. Eccotemp FVI-12 Tankless Liquid Propane Water Heater:

This tankless propane heating system is perfect for being utilized in smaller homes as it comes with a low water rate.

Eccotemp FVI-12


  • Electronic Ignition System:

This device can adopt a safe electronic ignition system and requires to be plugged into the 120V standard electrical outlet with a UL-list cord.

  • 6 GPM Of Water Flow Rate:

This device also comes with a low flow rate, which can reach just to 3.6 GPM. If you want to use this unit for the whole house use, then that would be not a good idea. But if you want it to use for the smaller house, then you can. It can supply hot water to only one kitchen and one bathroom simultaneously.

  • Simply Read The Digital Temp Display:

The error codes and water temp will show on the digital screen. Two knobs are set for controlling the temp; one of these knobs can be used for controlling the temperature of the water while the one can be used for controlling the gas usage. Thus you have to adjust both of these knobs for a suitable temp.


  • Energy efficient
  • Space-saving design and compact shape
  • Simple to fit
  • Light working noise
  • Ideal for small houses and cabin


  • Not simple to adjust the suitable water temp
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The Best Portable Propane Tankless Water Heaters:

These propane portable machines are ideal for outdoor usage and camping usage. These portable units are lightweight, which makes it possible for the user to carry the unit anywhere they go. If you are interested in buying a portable propane unit, then the following are the best options to go for:

Eccotemp FVI-12

What Is The Propane Tankless Water Heater?

The propane heating devices, as the name suggests, are a type of heating devices that are being powered by propane.

How to Install a Propane Thankless Water Heater

These units are also recognized as the propane gas water heaters and propane tankless water heaters. You will also require venting facilities, and the user also ought to make certain that the device is fitted properly.

Propane Tankless Water Heater Features:

The following are some of the amazing features you will get to enjoy after installing a propane tankless unit in your house:

  1. Instant hot water Supply:

One great thing about the propane water tankless heating devices is that they supply hot water constantly. You do not have to be anxious about running out of hot water while taking a shower or doing laundry. This unit can supply hot water in minutes or even in seconds.

  1. Clean Water Provided:

For the tank type ones, a particular amount of water is stored in a tank for heating up and utilizing. After a long time utilizing, the inside of that tank will simply get perished, and thus the water that it will supply would not be as clean as it ought to be. But the Propane Tankless heating machines, you don’t have to worry even a little about it because it will provide cleaner water for both just handwashing and taking a shower.

  1. Less Pollution:

For the propane type tankless devices, liquid propane is adopted as the main source of power. it is one of the cleaner fuels which bring less pollution to our environment.

  1. Longer Service Life:

The majority of the best quality tankless heating systems can last about 20 years of service, while a tank-type can last no more than fifteen years of service. Thus it can save much cash on replacing largely.

  1. Money Saver:

The tankless propane  heating devices can heat up the water just when you require it. The waiting time is also very short, which is one of the great things, can take about forty to sixty minutes for the flow of the hot water. Thus, it can save much cash on the heating costs of water as well as the bills every month.

  1. Save Space:

These heating machines are quite smaller and engage a smaller space compared to the tank type ones. For the tiny houses, you can still fit it anywhere you prefer to install.

Propane Vs. Electric Tankless Water Heater:

The Best Water Heater

Propane Tankless Water Heater


  • Energy efficient
  • Low using charges
  • More powerful


  • Expensive on the upfront charges
  • Require ventilation
  • Hard on installation

Electric tankless water heater:


  • No worries about ventilation or pipelines
  • Flexibility on the installation places
  • Don’t directly emit CO2
  • Simple installation


  • Utilizing charges can be high
  • Require constant maintenance
  • Less powerful

Top 3 Tankless Propane Water Heaters:

 Tankless Water Heater provides the large flow rate of water

Rheem RTG-95XLP

Rheem RTGH-95XLP Prestige Propane Outdoor Whole House Low NOx Condensing Tankless 9.5 GPM Water Heater

Tankless Water Heater is the best one for the mid-sized family usage

Takagi T-KJr2-IN-LP

High Efficiency Plus 9.4-GPM 199000-BTU Indoor Liquid Propane Tankless Water Heater

Propane Tankless Water Heater Types:

The tankless propane heating machines can be divided into whole-house type, portable type, outdoor type, indoor tankless water heater type, and condensing type, etc.

  1. Whole-Home Tankless Water Heater:

These types of tankless water heating machines are designed for supporting enough large water for the entire house usage. So the water flow rate if this type ought to be large enough and has to supply constant hot water. There’re a lot of other things you should contemplate while selecting the whole home tankless heaters. If you want to purchase a propane tankless water heater for your home, then check out the reviews we have provided to gather all the information that is necessary to choose the best one.

  1. Portable Heater for Water:

This type of tankless water heaters are designed for small houses and for travel usage. The portable heater machines are lightweight, and you can carry them anywhere with you. These units normally come with a small flow and can supply hot water to kitchen faucet and bathroom simultaneously.

You can also use this type of device in your RV and while on camping. Because of its special utilizing applications, fitting of this device is normally easy. If you have any other interest or inquiries in the product, we’ve provided a thorough portable tankless water heater reviews for you. You can get all the required information there.

  1. Small Propane Tankless Water Heater:

The propane small water tankless heating devices are usually utilized for the tiny homes. These are compact and therefore occupy just a small space on the wall. In addition, the flow rate of this device is accordingly low and can reach up to three GPM (gallons per minute).

If the house is crowded with all types of staff or requires something small for supporting one faucet or one bathroom only, we recommend this type for you, and you can select the most appropriate one from the best small tankless propane water heater reviews we have given here for you.

  1. Outdoor And Indoor Tankless Heater:

The outdoor and indoor tankless water propane heating machines refer to 2 fitting spots. For the indoor devices, you have to have the venting facilities for letting the gas out. While the outdoor heater machines require freeze protection for protecting the device in the colder or severe weather conditions.

Most individuals, installation of this type of unit can be a little hard. If you are having trouble installing it, then simply call in a professional to do the job for you. Fitting is mainly related to the working performance of your heating device. For more info, you can check out our best propane outdoor tankless water heater reviews.

  1. Condensing Propane Tankless Water Heater:

The same as the natural gas tankless water unit used or wasted gas required to be emitted through the venting systems. The propane condensing heating units will assist you in saving much energy and recovers the gas that is missed for reducing the green gas release. A few of the heating devices are also made with Low NOx, so less CO2 is generated and released.

How Can You Select The Best Propane Tankless Water Heater?

Selecting the best tankless propane heating device or your house can assist you in saving much cash, but there are some instructions you need to contemplate before choosing a propane tankless heater:How Can You Select The Best Propane Tankless Water Heater?

  1. The Size:

Before choosing, you ought to think about whether you require a small or a large propane heating device. If you don’t have sufficient budget or large are for the whole home heating system, then you can really go for the small type. If you want to get a tankless propane unit for camping or for traveling, then the portable propane tankless heating system will be a great option.

  1. The Temperature:

You have to acquaint and estimate the average temp in the urban regions and judge the max temp you require. Most of the tankless propane heating devices can reach up to 140 degrees Fahrenheit, but it might drop a little in the colder regions.

  1. Energy Efficiency:

High efficient propane heating machines are certain to save much cash for you, and because of the less gas wasted, it’s more eco-friendly.

  1. The Flow Rate of  Water:

Diverse size of the house needs a different Flow Rate of  Water; for the tiny house with one bathroom, three gallons per minute tankless heating device is enough. But if you’re a big family with three or even four bathrooms, you might require nine GPM unit for supporting multiple uses. Besides, you can approximate the average water you’ll make use of for each day, and settle on which level of flow rate unit you require.

  1. Warranty And Cost:

Cost is, certainly, the main concern of yours; always purchase something within the budget. Warranty of the tankless water devices is usually ten to twelve years for the heating components; a few can reach even fifteen years. Satisfying and long after-sale service will assist you a lot in later utilizing.

  1. The Safety:

Safety of the water tnkless heating devices is the most significant thing. A lot of heating systems are designed with self-protection systems, like freeze protection and self-diagnosed device. Such systems are capable of protecting your unit in dangerous situations and stop it automatically.


The tankless propane water heating devices are more energy efficient and can save more cash for you. A few of these models are both natural gas tankless water heater and propane available. If you don’t have a gas pipe or desire a cheaper one, then you might select the tankless propane water heater type. Here we have selected three best machines for you:

If you are interested in purchasing a propane tankless water heater for your home and want to know more about the other types of tankless propane water heating devices or want to know more about the detailed costs, then please check out everything Amazon.