page title icon 10 BEST PROPANE TANKLESS WATER HEATER 2021 | best for your home

If you are tired of traditional water heaters and looking for the best propane tankless water heater then you are at the right place. Here, you will find the specifications and all the features of propane fuel-based tankless water heaters and it will surely help you to find the best one for your use.

Before getting in the position to choose the best propane tankless water heater for your house that perfectly fulfills your demands, you must know about the product you are going to buy. Propane tankless water heaters use propane as fuel and it provides the continuous supply of hot water instantly. Propane water heaters have a compact metallic body instead of a tank. It works by passing the groundwater through these heat exchangers whenever warm water is needed. Sensors detect the water and trigger a signal to send propane to the burning element and ignite the burners that will further heat the water. On turning off, it stopped heating water.

Propane tankless water heaters are the best choice in areas that have a shortage of natural gas like higher altitudes. It is also beneficial to replace these propane fuel-based water heaters with electric tankless water heater with high heating cost. Due to its compact size, it is a highly portable appliance. Compared with other heaters, they have an approximately double life span. One of the best features of these heaters is they are environment friendly as they release 50% fewer carbon components thus reduces global warming and provides a healthy environment.

With the high recovery rate of propane tankless water heaters, users can get warm water very quickly. Our team has researched a lot to get the perfect information of models to get listed the best propane tankless water heaters for buyers. This will surely help them to get the best one for your house.


Given below is the list of best propane tankless water heaters reviews which are written after having a lot of research. If you are looking for the perfect heater for your house, just go through it.

Image Product Details   Price
backpac Rinnai V65EP Brand: Rinnai
47.4 Pounds
120 Volts
Check Price
backpac Rinnai RL Series Brand: Rinnai
44.2 Pounds
115 Volts
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backpac Camplux 5L 1.32 GPM Brand: Camplux
14.08 Pounds
3 Volts
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backpac GASLAND Outdoors BS158 Brand: GASLAND
14.82 Pounds
3 Volts
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backpac Eccotemp L5 1.5 GPM Brand: Eccotemp
3 Volts
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backpac Marey GA10LP Power 10L Brand: Marey
21 Pounds
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backpac Eccotemp i12-LP Brand: Eccotemp
28.9 Pounds
120 Volts
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backpac Rinnai RUR199iP Brand: Rinnai
84 Pounds
120 Volts
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backpac Camplux CA528 5.28 GPM Brand: CAMPLUX
32.3 Pounds
120 Volts
Check Price
backpac Camplux Pro Brand: CAMPLUX
49.7 pounds
Voltage: 120 Volts
Check Price

1. Rinnai V65EP

Rinnai V65EP
  • Easy Installation
  • Affordable price
  • Energy factor of 0.82
  • Temperature range changes in very cold areas

Rinnai is a brand that produces tankless water heaters with amazing and worthy features. Rinnai V65EP is one of the V series models that uses propane as fuel to provide warm water. It is one of the top-rated propane tankless water heaters having some spectacular features. Looking into its flow rate that is 6.5 GPM sufficient for 3 shower usage at a time which is suitable to fulfill the warm water needs of the average house.

Rinnai V65EP is installed with one of the best features is control-R technology. Due to this, the user can easily control this tankless water heater through any phone or tablet. No worry to wait for the desired temperature hot water, just unlock the phone and set the wanted temperature. These features not only save time but also water.

The model has an exceptional temperature range that it can provide hot water supply 80 F to 140 F that depicts its high performance. But using this in very cold areas can cause a little bit of change in this range. It is a highly efficient device with an energy factor of 0.82. Before buying any product, we always look into its warranty that Rinnai V65EP offers amazingly 12 years of heat exchanger warranty and a 5-years part warranty with a year labor warranty also. Contrary to the other premium propane tankless water heaters, it is very budget-friendly.

Key Features

  • Compact Size 9 x 14 x 23 inches
  • High efficiency
  • Control-R technology
  • Flow rate of 6.5 GPM
  • Temperature range 80 F to 140 F
  • Error code indicator

2. Rinnai RL Series

Rinnai RL Series
  • 12 years heat exchanger warranty and 5 years parts warranty
  • Easy and simple installation
  • Less carbon dioxide emission
  • Parts are easily replicable
  • Larger life span
  • A little bit costly
  • Need to clean the burner yearly

Are you tired of long wait for the water to circulate through the heaters and achieve your desired temperature? Rinnai introduced RL94IP to get rid of this problem. RL94IP is installed with the Circ-logic technology that recirculates the warm water into the pipes and pushes the cold water in the return line. It can be controlled through mobile phones by just installing an app and according to your expected hot water usage, you can define your recirculation pattern. This feature helps you to save time and water also.

RL94IP supplies endless warm water having a high flow rate up to 9.4 GPM which is enough to supply hot water to 4 shower heads and 1 sink simultaneously. It uses almost 40 % less energy as compared to other tankless water heaters that’s why it has very high efficiency.

Due to its compact size, it can be placed anywhere inside your house and also make it easy to shift it from one place to others. The decent grey color of RL94IP and its digital temperature display give it a more attractive and fascinating look. Looking into the warranty of this most reviewed propane tankless water heater, it offers 12 years warranty of its heat exchanger and for the parts, it offers 5 years warranty and an exceptional 1-year labor warranty. In case of a defect in any part of this heater, the user can easily replace that part instead of buying the whole system again. Less emission of carbon dioxide makes it a more environmentally friendly appliance.

Key Features

  • Circ-logic technology
  • Flow Rate Up to 9.4 GPM
  • Energy Factor up to 0.82
  • Digital Temperature Display
  • Sleek and compact design
  • Energy-star certified

3. Camplux 5L 1.32 GPM

Camplux 5L 1.32 GPM
  • Affordable Price
  • Oxygen depletion safety
  • Easy outdoor installation
  • CSA regulator
  • Compared low flow rate
  • The battery needs to change frequently

Searching for the best portable propane tankless water heaters then you will surely end up on the tankless heaters of Camplux. People can surely enjoy hot water at home but usually face a lot of difficulties whenever they are out for some tour, camping or other family outings. Camplux 5L provides the user with warm water anywhere due to its portability. If you are living alone or sharing apartment with a roommate or partner then it is surely the best option to choose as its flow rate is up to 1.32 GPM.

Have you ever wanted to take shower and the power goes out? No need to worry. Camplux 5L is here to solve this problem also. It can also be powered with 2 ‘D’ batteries so you can even use it when the power is not available. Having the oxygen depletion sensors, it helps the user to find the perfect place to install it indoors to keep it ventilated and enjoy the healthy air.

Stainless steel burner and heat exchanger made up of tinning copper make it a super durable heater. It requires very low operating pressure of just 0.4 PSI but gives amazingly high output and works very efficiently. The folding handle makes it easy to carry and move. Reading such great features will make the reader think its price very high. But, it is available in the market at a very low price easily affordable by anyone.

Key Features

  • 1.32 GPM Flow Rate
  • Stainless Steel burner and Tinning Copper Heat exchanger
  • Battery-Powered Technology
  • Portable
  • Temperature range 46.4 F to 114.8 F
  • Durable

4. GASLAND Outdoors BS158

GASLAND Outdoors BS158
  • Very Budget Friendly
  • Space-saving appliance
  • Low activation pressure required
  • Energy saver device
  • CSA safety certified
  • Do not work efficiently at higher altitudes

Are you afraid of using gas water heaters and looking for the safest propane tankless water heater? GASLAND can solve all of your problems and provide you the safest propane water heaters to enjoy the warm water. GASLAND BS158 fulfills all the safety standards set by CSA which is the basic safety standard of Canada and the USA. If you increase the temperature very high like 167 F it reduces the pressure up to 2.5 to 110 PSI as per requirement and automatically turns off the heater and saves the user from any sudden or dangerous flameout.

Looking forward to the working efficiency of these portable propane tankless water heaters, they give instantly hot water as it does not need any pre-heat phenomenon and also starts up at a very low pressure of 2.5 PSI. Its maximum flow rate is up to 1.58 GPM which is good enough as compared to other portable propane tankless water heaters. Using it at higher altitudes like above 3300 feet or areas where stormy winds blow, its working efficiency may decrease.

GASLAND BS158 has a very compact design of modern features. Due to its low weight, it is easy to carry and use it anywhere in camping or other places where you want to take it with you. It is designed with advanced combustion technology that allows the burner to burn less fuel that reduce the use of propane thus increasing the fuel life of this propane tankless water heaters as compared to others and saving 11.5 % more energy. If users want to install it inside their houses, no worry just connect the duct with it and make sure to place it where it can perform proper ventilation process. Having knobs in front of the heater allows the user to adjust the heat and water as per requirement.

Key features

  • Flow rate up to 1.58 GPM
  • Advanced Combustion Technology
  • Sleek and Compact Design
  • Powered by 2 ‘D’ batteries
  • Easy installation
  • CSA safety certified

5.  Eccotemp L5 1.5 GPM

Eccotemp L5 1.5 GPM
  • Highest Efficiency even at higher altitudes
  • Affordable Eccotemp system
  • Low activation pressure
  • Light-weighted
  • The temperature of heating coils rises

Eccotemp is also very famous as it offers a series of portable outdoor tankless water heaters. This brand designs heaters usually for the outdoor purpose like outdoor picnics, camping, or other short tours. Many people these days use portable water heaters for bathing their pets, for washing automobiles in the garages or any other places where they need instant hot water.

Eccotemp L5 has a flow rate of 1.5 GPM sufficient for an outdoor 1 person. Anyone who lives alone can hunt for it as it is sufficient to fulfill his/ her needs. Although, it is powered with liquid propane it can also be operational through 2 ‘D’ batteries. One of its appealing features is that it is legally certified by CSA. Hence, it fulfills all their standard safety and other requirement and also easily available in the market.

Temperature range of 50 F to 140 F can be achieved easily by activation pressure of just 20 PSI. Talking about its appearance, it is white having two knobs in front of it that are used to control the water at your desired temperature. It is also available in the market with pump and strainers to make it most effective. It is experimentally proved that not only in plains but also in higher altitudes, it works very efficiently. It also automatically shut off when continuously running for 20 minutes more than 45 degrees in either incrementing or decrementing direction thus increasing the safety of users.

Key Features

  • 1.5 GPM Flow Rate
  • Temperature Range 50 F to 140 F
  • 2 ‘D’ Battery Installation
  • CSA Certified
  • Sleek and Compact Design
  • Safety Shut Off

6. Marey GA10LP Power 10L

Marey GA10LP Power 10L
  • Space-saving Design
  • Save up to 60 % of electricity bills
  • Battery design needs to be modulated

Marey GA10LP is one of those propane gas tankless water heaters having multiple features at a very budget-friendly price. Installing this at home will further save energy up to 60 % of utility bills. It does not require any electrical connection so can be preferably used in areas that have frequent power shut down.

Having a compact size of 6.9 x 13.6 x 23.6 inches, it can occupies very small space and can be easily installed anywhere in the house. With a flow rate of a maximum of 3.1 GPM, it provides endless warm water to meet the need of an average house. It is activated by inlet water pressure and provides the desired warm water in seconds.

For the installation of Marey GA10LP, the user does not need an electrician or plumber as it is very convenient to install after reading a manual. It has three knobs in the front panel to control the temperature and the fuel. It is available in the market at a very affordable price.

Key features

  • Compact size 6.9 x 13.6 x 23.6 inches
  • Simple and convenient installation
  • 5-year warranty
  • Flow rate of 3.1 GPM
  • 2 ‘D’ battery ignition

7. Eccotemp i12-LP

Eccotemp i12-LP
  • Highest Efficiency
  • Technically Most Advanced
  • Affordable price
  • Convenient and quick installation
  • Wall-mounted
  • Exhaust fan
  • Does not offer very high temperature

Eccotemp offers varieties of propane tankless water heaters but usually, they are portable and more suitable for outdoor processes but its i12-LP is a whole house propane tankless water heater. Our team has observed especially propane tankless water heaters are usually designed to be installed outdoors and have a small flow rate. But i12-LP can be installed outdoor as well as indoors because it has a flow rate of 4 GPM enough to fulfill the warm water requirements of the whole house.

The modern and fascinating look of this water heater is the main cause of attention for users. Its front panel is made up of tempered glass that is usually processed through many chemical and thermal processes that can increase the durability and strength of this glass. The front panel is in the black shiny color that has a reflection effect making it more attractive and it is embedded with the digital temperature display at the bottom of the front panel. Besides, with a digital display, it is enhanced with touch technology to adjust the temperature and perform other functions. On turning off the heater, the front panel becomes plane just like a simple shiny black box adding the beauty of the house.

Eccotemp i12-LP is installed with electronic ignition technology in which sensors generate electric pulses and give a signal to the transistor to ignite the fuel. Ignition through electric pulses emits fewer gases making it more environmentally friendly. As children are always curious about inventing new things, a user is usually very worried to install fuel-based water heaters but Eccotemp i12-LP is giving users relief with its child lock technology. It provides temperature up to 77 degrees F. For the installations, it requires just ½ NPT connection that makes it more convenient.

Key Features

  • 4 GPM Flow Rate
  • Digital Temperature Display
  • Child lock technology
  • Electronic ignition technology
  • Compact Size 13.7 x 25x 5 inches
  • Continuous Hot Water Supply
  • 2 years manufacturer warranty
  • Beautifully designed
  • Energy-saving mode

8. Rinnai RUR199iP

Rinnai RUR199iP
  • Compact size 18.5 x 11.45 x 31.3 inches
  • High efficiency
  • Less power consumption
  • 12-year heat exchanger and 5-year parts warranty
  • 1-year labor warranty
  • Pro installation required
  • A little bit more expensive

Are you a part of large family and searching for a single propane tankless water heater that fulfills all of your hot water requirements and also fabricated with all the modern features? Rinnai recently introduced a single operating unit that not only supplies endless warm water but also has modern-day features. Rinnai RUR199iP has a very high flow rate of 11 GPM and that means never running out of warm water even if using it in multiple places simultaneously.

Fabricated with the most modern thermal circ-logic technology allows users to recirculate the hot water in the pipelines increasing the efficiency of the heater and also does not require a special return line. The warm water temperature can easily be adjusted through Wi-Fi connection so users do not need to wait for the desired warm water.

Providing hot water only when needed make it a highly efficient process having a uniform energy factor of 0.93. It is not only energy star qualified but also approved through South Coast Air Quality Management District. For the proper installation, a plumber or electrician is needed. This is one of the few propane tankless water heaters that have a salient feature of voice activation. Except for all the modern and structural features, it also has a very decent look that adds up to the beauty of houses. It is a little bit costly than other propane tankless water heaters as it falls in the list of premium propane tankless water heaters.

Key features

  • Flow rate up to 11 GPM
  • ThermaCirc 360 technology
  • Wi-Fi connection
  • Energy factor of 0.93
  • Voice activation enabled
  • LED temperature display with touch technology

9. Camplux CA528 5.28 GPM

Camplux CA528 5.28 GPM
  • High Flow Rate
  • Highest Efficiency
  • Affordable Price
  • Safety assurance
  • Low inlet water pressure
  • Efficiency decreases at higher altitudes
  • Proper ventilation required

Camplux CA528 is a highly efficient tankless propane water heater used inside the houses to get a continuous supply of warm water. It has a flow rate of 5.28 GPM. By attaching the CP-70 vent pipe, it performs even better and with high efficiency like RV tankless water heaters.

Due to the fabrication of phosphorous dioxide thermal heat exchangers, its efficiency increases by 92 %. Due to the presence of wind pressure sensors, it automatically varies the speed of the fan to maintain smooth combustion.

Discussing its safety conditions, it is CSA certified and also ensures over-heat protection, dry combustion protection, anti- frozen protection, and automatic water pressure protection. It activates at a very low pressure of 7 to 15 PSI. Its alluring design with a digital temperature display at the front makes it more attractive. The temperature can also be adjusted through inlet water pressure. It not only saves maximum energy but also saves time by providing an endless supply of hot water. It is available at a very reasonable price in the market.

Key Features

  • 5.28 GPM Flow Rate
  • Unique Design that saves space
  • Digital Temperature Control Display
  • Automatic temperature control
  • CSA certified
  • Wind pressure sensors

10. Camplux Pro

Camplux Pro
  • Highest efficiency
  • Fewer nitrogen oxides emission
  • Overheat protection
  • Less power consumption
  • Low inlet water pressure
  • Install inline water system for better efficiency
  • Less efficient at higher altitudes

People usually get confused while selecting a propane tankless water heater because portable propane tankless heaters are designed to use outside, at any picnic or family trip but when they need to use it inside their homes, they face difficulty as these tankless water heaters offer usually a very low flow rate. Camplux pro is offering a very high flow rate of 6.86 GPM that is enough for whole house warm water needs.

Looking at the safety features, Camplux pro is enriched with many safety features involving dry combustion protection and anti- frozen protection. Also, it provides over-heating protection. For providing anti-freezing protection, it is embedded with automatic heating technology when the temperature falls below 40 degrees F.

An appliance with multiple features and an extraordinary high flow rate is just more than an amazing product. Camplux pro is the best environmentally friendly heater emitting a very less amount of nitrogen oxides whose excess can cause damage to the human respiratory track and many other severe health problems.

Camplux pro is a very efficient appliance for the whole house providing an endless warm water supply with a power factor of 0.82. Talking about its structural features, it has windproof and waterproof features. Digital remote control having a cable of 3.3 feet also make it more convenient to use and control the water temperature. While installing outdoor it does not require any kind of vent pipe connection.

Key features

  • 6.86 GPM flow rate
  • Digital temperature display on remote
  • 0.82 energy factor
  • Sleek and compact design
  • Anti-freezing protection
  • Convenient and easy installation
  • Energy-saving mode

Marey GA10LP Power 10L

Ultimate Buyer’s Guide to Buy Best Propane Tankless Water


After reading the detailed reviews about the top listed propane tankless water heaters, buyers usually get confused to select the best one for themselves. If the product is good but unable to fulfill the user requirement then it is surely a useless thing. Here, listed below are the most important factor that will help to select the best one for you.

Flow Rate (GPM)

The most important factor is the flow rate provided by propane tankless water heaters. If you want to buy a water heater just for outdoor purposes like having it for a tour or buying it for your pets or other purposes using less amount of money then you can buy a propane heater with a low flow rate. For using the propane tankless water heater for outdoor as well as indoor usage then go for the heater with a high flow rate that fulfills your whole house requirement as well.

Energy saving

Propane tankless water heater is demanded because of their energy-saving property. The more they save energy the less will be the expenditure of the user. So having more energy-saving characteristics will help you save energy and money as well.


Setting a budget before buying and then purchasing according to your budget is the most important thing you must do. Having more desired features in an affordable price should be the main hunt of buyers.

Right size

In the case of outdoorusage, users have to look at the size of tankless heaters that can be easily carried and easy to handle. Most people want to buy tankless heaters having small sizes so that it can be easily installed in small spaces.

Temperature range

Temperature range is one of the most important features of propane tankless water heaters. Check the requirement of the temperature of water you need according to your area before buying.

Safety Checking the safety provided by any device is the most important thing to be looked upon. Most of the heaters offer anti-freezing protection, child lock technology, and anti-flame protection. You can get the best product with desirable safety features.


What should be the minimum flow rate to use propane tankless electric heaters for outdoor as well as indoor purposes?

A propane tankless water heaters with a flow rate of at least 4 GPM can be used for both indoor as well as for outdoor purposes.

Why propane gas tankless water heater is preferable over any other tankless water heater?

Propane gas tankless water heaters are preferable due to their portability. They are easy to carry and best to be carried on trips.

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