If you’re looking for an efficient and reliable way to heat water in your home, then a propane tankless water heater might be the perfect option for you. Unlike traditional tank heaters that store and heat water continuously, tankless water heaters heat water on demand, which reduces energy costs and saves space in your house. However, before making a purchase, there are a few important factors you should consider.
Firstly, you need to consider the size of your household and your hot water usage to determine the appropriate heater size that can sufficiently provide hot water for your entire home. Secondly, you should consider the energy efficiency of the unit and its installation and maintenance costs. Thirdly, you should take a look at the safety features of the heater, such as flame failure protection and temperature limit control.
If you're wondering which propane tankless water heater is the best for you, keep reading. What are the benefits of using a propane tankless water heater? What is the lifespan of the product? What are the features that can make your experience more comfortable and efficient? What brands are considered the best in the market? These are some questions that people often ask before choosing the right propane tankless water heater. In this article, we will explore all of these areas and provide all the necessary information to help you pick the best option for your unique needs.
10 Best Propane Tankless Water Heaters
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1
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Ideal for outdoor use, providing hot water on demand for activities such as camping, hunting, or RVing.
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2
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This product is ideal for providing hot water on-the-go for outdoor activities such as camping, RVing, and outdoor showers.
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3
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Ideal for providing instant hot water on demand using propane fuel indoors.
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4
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This product is ideal for providing instant hot water indoors through propane heating, with a high flow rate.
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5
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The product is ideal for providing hot water quickly and efficiently without the need for a large storage tank.
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6
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This product is ideal for providing hot water outdoors using propane fuel with an average flow rate of 8.4 GPM.
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7
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Ideal for providing endless hot water supply using propane fuel for indoor installation.
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8
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This product is ideal for outdoor use, such as in RVs, cabins, camping, boats, and barns, providing hot water.
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9
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Ideal for providing hot water in small to medium-sized indoor spaces using propane and a tankless heating system.
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10
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Ideal for providing hot water during outdoor activities such as camping, hunting, fishing, and other off-grid adventures.
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1. Camplux 16l Outdoor 4.22 Gpm Digital Display Propane Gas Tankless Water Heater

The Camplux portable tankless water heater is an efficient and powerful solution for anyone who needs hot water on-the-go. With its easy setup and installation, it only takes 5 minutes to get started. This product comes with all the necessary accessories to make the installation process simple and hassle-free.
With a flow rate of 4.22 gallons per minute, this water heater is capable of providing instant hot water wherever you are. It lights up when water pressure is between 4.0-110 PSI, making it perfect for use in low water pressure situations like camping or remote cabins.
Safety is a top priority when it comes to this product. It features a 6-in-1 protection system that includes a flame failure device, anti-freezing protection, and over-heating protection. The anti-freezing drain plug is specifically designed to discharge residual water to prevent freezing in cold areas during long-term maintenance. Additionally, the gas supply automatically shuts off when the high water temperature protection exceeds 167°F.
The Camplux portable tankless water heater is also energy-efficient, with a maximum power output of 11,000 BTU/hour. Its compact and lightweight design includes 11.5% energy-saving technology, making it an ideal choice for those who want to save on energy costs. The propane water heater exchanger and main burner are designed with advanced combustion technology to decrease gas consumption and minimize burning noise.
It is important to note that to avoid gas leakage caused by improper sealing, you should not twine Teflon tape between the gas regulator and gas inlet pipe. This could cause the tankless water heater to catch on fire with improper operation. Always check for gas leakage before operation to ensure your safety.
2. Eccotemp L5 1.5 Gpm Portable Outdoor Tankless Water Heater

The portable propane tankless water heater is perfect for those who love camping, outdoor activities, or need hot water on-the-go. It is lightweight, easy to carry, and compact, making it a great addition to your outdoor gear. The product is also ideal for washing your pets and taking outdoor showers.
This tankless water heater runs on a standard 20 lb. Liquid Propane tank and is equipped with an electronic ignition. The product is powered by 2 “D” cell batteries, making it convenient for use anywhere, anytime. You can easily connect the tankless water heater to any standard garden hose.
Safety is a top priority with this product, and it features a safety shut off that is activated when the unit runs longer than 20 minutes or is tilted more than 45 degrees in either direction. This feature ensures that you can use the product without any worry.
The propane tankless water heater has a low pressure activation of 20 PSI, which is easy to connect to any standard garden hose. The product is rated at 1.5 GPM of hot water output, providing hot water as per your requirement. You can also achieve a temperature range of 50 – 140 degrees F, making it perfect for any outdoor activity, including washing dishes, taking a shower, or washing your car.
3. Instantpro Propane Water Heater – Indoor White

The Camplux High Capacity Propane Tankless Water Heater is an excellent choice for small homes, cabins, or apartments that require on-demand hot water. With a capacity of 2.64 gallons per minute (GPM), this water heater delivers instant hot water without waiting for preheating.
The 6-in-1 multiple protection system is designed to ensure safety and peace of mind. It includes flame-out protection, anti-freezing protection (manual drainage needed), over-heating protection, and air flow pressure switch protection. Additionally, the safe electronic ignition system plugs into a standard 120V electrical outlet with a UL-listed cord.
Installation of this propane water heater is easy. It uses a standard 1/2" NPT water fitting and gas inlet, and comes with a 2" horizontal vent pipe for efficient power ventilation. The minimum activation rate is 0.65 GPM, and the maximum input rating is 68,000 BTU. The water connection location and size is at the bottom and 0.5-inch NPT respectively. For hooking up to a propane tank, a gas regulator (Camplux model KR-106A) and a 5/8" NPT male to 1/2" BSP female gas connector adapter are required.
The compact design of this instant hot water heater saves space compared to traditional tanks. Its trendy and modern design includes a Fahrenheit digital temperature display, and the Eco and Full gas switch allows for energy-saving and ideal hot water temperature.
At Camplux, customer service is a top priority. They offer 24-shift hours customer service and support through live chat, phone, and online helpdesk to make the customer experience easy and fast. If you have any questions, feel free to call them at (844) 538-7475.
4. Camplux Black Hot Water Heater

The Camplux CA318 propane hot water heater is a high-performance tankless water heater that delivers precise temperature control, instant hot water, and durability. With its advanced technology, this water heater can precisely control the temperature difference of the water within ±2 ℉, ensuring no more chilly cold showers.
This propane hot water heater comes with an oxygen-free copper heat exchanger and a v-type stainless steel burner, making it highly efficient with a heating efficiency of up to 98.99% in just 3 seconds. It can deliver 3.18 GPM on-demand hot water for 2-3 points simultaneous water supply for bathroom and kitchen hot water demand.
The Camplux water heater is designed for durability, and it comes with a 3-year warranty on the oxygen-free copper exchanger and a 1-year warranty on other parts. Installation is easy with the standard 1/2" NPT water fitting and gas inlet, and it comes with a 2.3" horizontal vent pipe for quick installation. For indoor use, you can take Camplux wall thimble for perfect installation. You will need a gas regulator (Camplux model KR-106A) and 1 pc 5/8" NPT male to 1/2" BSP female gas connector if you hook this water heater to propane tanks.
This propane water heater is only 1/6 the size of a 50-gallon tank water heater, making it ideal for use in small spaces such as homes, small cabins, and remote apartments. The integrated components provide greater safety from water pressure surges without the need to install an expansion tank.
Operating the Camplux propane tankless water heater is easy, with its trendy design and unique black glassy front panel. It is easy to control the water temperature with LED touch screen with Fahrenheit digital display. The stand-by electric power is 2W, and working electric power is 42W. Propane gas input pressure is 0.4psi. There is a pressure relief valve at the water inlet of water heater. It is necessary to manually unscrew the pressure relief valve to drain the water inside the machine in time after using the machine to avoid freezing and blowing up when the temperature is lower than 32 ℉ in winter.
5. Eccotemp Fvi12-Lp Liquid Propane Gas Tankless Water Heaters, White

Introducing the Whole Home Indoor Gas Powered Tankless Water Heater, an energy-efficient solution for those looking to save on their energy bills. This tankless water heater has a rating of 3.6 GPM and only activates when in use, allowing it to save energy and reduce costs.
Designed for indoor installation, this tankless water heater features a safe and efficient power ventilation system that makes it perfect for any small home, cabin or apartment. Its compact and space-saving design also makes it easy to install in tight spaces.
The digital temperature display on this tankless water heater is easy to read, ensuring that you can adjust the temperature to your desired level with ease. Despite its powerful performance, this tankless water heater produces minimal noise output, making it a great choice for those who value peace and quiet.
Safety is always a top priority, and this tankless water heater features a safe electronic ignition system. It plugs into a standard 120v electrical outlet with a UL-listed cord, ensuring that it is safe to use in any home.
The Whole Home Indoor Gas Powered Tankless Water Heater uses standard 1/2" NPT water fittings and is equipped with easy-to-use manual water temperature controls. With a minimum 0.65 GPM flow rate, this tankless water heater is a reliable and efficient solution for all of your hot water needs. Say goodbye to high energy bills and hello to an energy-efficient and cost-effective solution with the Whole Home Indoor Gas Powered Tankless Water Heater.
6. Rheem Mid-Efficiency 8.4 Gpm Outdoor Liquid Propane Tankless Water Heater

Introducing a high-performance tankless water heater that is designed to conserve water and save energy. This cutting-edge product is equipped with an exclusive Water Savings technology that helps to save up to 1,100 gallons of water per year. This means that you can enjoy hot water without worrying about wasting precious resources.
With a powerful 157,000 BTU gas consumption per hour, this tankless water heater is capable of delivering hot water at an impressive rate of 8.4 gallons per minute at a 35° F rise maximum. This makes it ideal for households with high hot water demand.
One of the unique features of this water heater is its exclusive Hot Start Programming. This innovative programming minimizes cold water bursts by keeping the system in a ready-fire state. This means that hot water is available on demand, without any delays or fluctuations in temperature.
The product is also Recirculation pump ready kit ready. This means that you can add a recirculation pump to the system, which will help to further conserve water and energy. This feature is particularly useful for households that require hot water on demand, without any waiting time.
Designed for use outdoors, this tankless water heater comes with freeze protection up to -30 degrees. This means that you can use it in colder climates without worrying about the water freezing in the pipes.
7. Rinnai Rl94ip Tankless Hot Water Heater, 9.8 Gpm, Propane, Indoor Installation

Introducing the Rinnai Tankless Hot Water Heater – a compact and efficient solution to your hot water needs. With its innovative Circ-Logic technology, this non-condensing water heater offers personalized recirculation patterns that align with your daily habits. For those seeking the latest in non-condensing technology, the RE180iP model is the perfect choice.
Measuring only the size of a small suitcase, this propane water heater can easily fit into a variety of spaces without compromising on performance. It offers an impressive 9.8 gallons per minute, providing enough hot water for up to 6 fixtures to run simultaneously.
The Rinnai Tankless Hot Water Heater is designed to last, with a 12-year residential guarantee for the heat exchanger, 5-year guarantee for labor, and 1-year guarantee for parts. For commercial use, the heater comes with a 5-year guarantee for the heat exchanger, 5-year guarantee for labor, and 1-year guarantee for parts.
For added convenience, the Controlr module allows for WiFi control and monitoring of the water heater. However, please note that this module is not included and must be purchased separately. Professional installation is highly recommended, and customers can visit the Find a Rinnai PRO page on the company's website to locate a qualified technician in their area.
To ensure you select the right water heater for your home, Rinnai provides a range of resources including product guides, manuals, energy guides, warranty information, videos, and tables. Customers can also refer to the Ground Water Temperature Map to determine if this heater is optimal for their region.
Say goodbye to running out of hot water and hello to the Rinnai Tankless Hot Water Heater – a smart, efficient, and reliable choice for any household or commercial property.
8. Portable Gas Water Heater For Outdoor Adventures.

The GASLAND BE158 Tankless Water Heater is a powerful, compact and efficient unit designed for outdoor use. With a maximum power output of 41,000BTU/Hr, this water heater can produce up to 1.58 gallons of hot water per minute at a flow rate of 1.58 GPM. The temperature can be raised up to 109.4℉ (43℃) at its highest point and 55.4℉ (13℃) at its lowest point.
This water heater is versatile and can be used in various scenarios, including camping, RVing, hunting, poolside activities, pet or horse washing, vehicle cleaning, and even in tiny homes, greenhouses, or cabins. It runs on a standard 20 lb. liquid propane tank and features an electronic ignition powered by two D-cell batteries.
Safety is a top priority, and the GASLAND BE158 Tankless Water Heater is CSA certified, which means it meets the safety standards of both Canada and the US. It also features multiple safety protections including over-heating protection, low water flow protection, dry combustion protection, anti-freezing protection, high water pressure protection and flame failure device.
The LED digital display allows users to easily adjust and monitor the temperature, ensuring that the water is not too hot or cold. The unit comes with a 1-year warranty against manufacturing defects and lifetime customer support.
The package includes a gas regulator and hose, 5 feet On/Off Switch Shower Head, mounting hardware, garden hose adapter, and a manual. To avoid gas leakage, it is recommended not to twine Teflon tape between the gas regulator and gas inlet pipe, and to always check for gas leakage before operation.
Designed for portable outdoor use, the GASLAND BE158 Tankless Water Heater is splash-proof and can handle light drizzle. However, prolonged exposure to rain or water can damage the internal components, so it is recommended to store it in a dry place. For winter, it is advised to drain out the water by disconnecting the drain plug and storing it in a warm and dry area.
9. Rinnai Rl75ip Tankless Hot Water Heater, 7.5 Gpm, Propane, Indoor Installation

The Rinnai Non-Condensing Tankless Hot Water Heater is a reliable and efficient solution for hot water in your home or commercial space. Its Circ-Logic technology offers customizable recirculation patterns that suit your daily habits, ensuring you never run out of hot water.
This compact propane water heater is about the size of a small suitcase, making it easy to install in a variety of spaces. Despite its size, it can provide up to 7.5 gallons per minute, which is enough for up to five fixtures at once.
The Rinnai Non-Condensing Tankless Hot Water Heater is designed to last and comes with a 12-year heat exchanger warranty for residential use, 5-year warranty for labor, and 1-year warranty for parts. For commercial use, it comes with a 5-year heat exchanger warranty, 5-year warranty for labor, and 1-year warranty for parts. For added convenience, you can control this water heater remotely with the Controlr module, which is sold separately and offers WiFi control.
Professional installation is recommended for this water heater. You can locate a qualified technician in your area by visiting the "Find a Rinnai PRO" page on the Rinnai website. It is not recommended to install this water heater without the help of a qualified technician.
If you're not sure which Rinnai tankless water heater is right for your home, you can refer to the product guides, manuals, energy guide, warranty information, videos, and tables available on the Rinnai website. You can also check the Ground Water Temperature Map to see if this heater is optimal for your region.
Invest in the Rinnai Non-Condensing Tankless Hot Water Heater for a smart and durable solution to your hot water needs.
10. Camplux Outdoor Propane Portable Water Heater

Introducing the Camplux AY132 Portable Tankless Propane Water Heater, a reliable and versatile solution to all your outdoor hot water needs. This lightweight and compact design weighs only 10 pounds and features a folding handle for easy setup and storage, making it ideal for off-grid and rural areas.
With a flow rate of 1.32 GPM, this water heater can produce 1.32 gallons of hot water per minute, with a temperature raise of up to 114.8℉ (46℃) at its highest point and 46.4℉ (8℃) at its lowest point. The lowest water pressure at the beginning for the water heater is 3.0 PSI, ensuring a consistent hot water supply for all your outdoor activities.
Safety is a top priority, which is why the Camplux AY132 Portable Tankless Propane Water Heater features 6-in-1 protection and is CSA safety approved. It comes with anti-freezing protection, over-heating protection, low water flow protection, dry combustion protection, high water pressure protection, and a flame failure device.
Setting up this propane water heater is a breeze and can be done in just 10 minutes. The package includes a 5 feet premium on/off shower head, a 5 feet gas regulator, a set of US-standard garden hoses, and an installation hardware pack. However, it is important to read the installation instructions thoroughly to avoid gas leakage caused by improper sealing.
It is important to note that damage caused by freezing is not covered under Camplux warranty. Therefore, it must be properly drained if the water heater is stored in a cold climate. Freeze damage can occur in the heat exchanger or water valves. To drain the device properly, please open the drain stem located at the bottom right of the water heater by turning it in a counterclockwise direction. It is also essential to disconnect all incoming and outgoing water lines to ensure proper drainage from the water heater when not in use.
Best Propane Tankless Water Heaters FAQs
Are there any safety concerns with using a propane tankless water heater?
When it comes to using a propane tankless water heater, safety concerns should always be taken into consideration. However, if installed and maintained properly, propane tankless water heaters are generally safe to use.
One important safety consideration is the ventilation of the unit. Propane tankless water heaters produce carbon monoxide, which can be dangerous if not properly ventilated. It is important to ensure that the ventilation system is installed correctly and free of blockages. It is also recommended to install a carbon monoxide detector in the same room as the unit.
Another safety concern is the risk of fire or explosion. Propane is a highly flammable gas, so it is important to ensure that the unit is installed by a licensed professional and that all connections are secure. It is also recommended to have the unit inspected annually to ensure that there are no leaks or other potential hazards.
Overall, as long as proper safety measures are taken and the unit is installed and maintained correctly, a propane tankless water heater can be a safe and efficient way to heat water in your home.
Can a propane tankless water heater be used for both hot water and heating?
Yes, a propane tankless water heater can be used for both hot water and heating. Tankless water heaters are designed to provide hot water on demand, which means that they can be used for a variety of applications, including heating. In fact, many homeowners choose to use tankless water heaters as a primary source of heat in their homes, as they are highly efficient and can provide consistent and reliable heating throughout the year.
When it comes to using a propane tankless water heater for heating, there are a few things to consider. First, it's important to make sure that the heater is properly sized for the space that you want to heat. This will ensure that it can deliver enough heat to keep your home comfortable, while also ensuring that it operates efficiently.
Additionally, it's important to have the heater installed by a licensed professional, as they will be able to ensure that it is installed correctly and safely. With the right installation and maintenance, a propane tankless water heater can be an excellent choice for both hot water and heating needs.
How does a propane tankless water heater compare in efficiency to other types of water heaters?
A propane tankless water heater is considered to be highly efficient compared to other types of water heaters. This is because it heats water only when it is needed, eliminating the need for a storage tank to constantly maintain hot water. Unlike traditional tank-style water heaters, which need to constantly heat and reheat water to maintain a set temperature, tankless water heaters heat water on demand, providing hot water only when needed. This results in significant energy savings and lower utility bills.
Propane tankless water heaters also have a higher efficiency rating, typically between 90-98%, which means that they convert a higher percentage of their fuel into heat. This is due to their advanced design and technology that allows for precise temperature control and lower standby heat loss. In addition, propane is a clean-burning fuel that produces fewer emissions than other types of fuels, making it a more environmentally friendly choice.
Overall, propane tankless water heaters offer a highly efficient and cost-effective solution for providing hot water on demand, making them an excellent choice for both residential and commercial applications.
How does a propane tankless water heater work?
A propane tankless water heater works by heating water on demand as it passes through the unit. When a hot water tap is turned on, cold water enters the unit and flows through a heat exchanger where it is heated by a propane burner. The heated water then flows out of the unit and to the faucet or showerhead.
The main advantage of a propane tankless water heater is that it only heats water when it is needed, rather than constantly heating a tank of water like a traditional water heater. This can save energy and money in the long run.
Propane tankless water heaters are also generally more compact and take up less space than traditional water heaters. They can be installed inside or outside the home, depending on the model.
It is important to note that propane tankless water heaters require proper ventilation and gas line sizing to operate safely and efficiently. It is recommended to have a professional plumber or HVAC technician install and maintain the unit.
How much does it cost to install a propane tankless water heater?
The cost of installing a propane tankless water heater depends on various factors, such as the size of the unit, installation location, and labor costs. On average, the cost of a propane tankless water heater installation can range from $1,000 to $4,000. However, this could increase if additional work is needed, such as upgrading gas lines or electrical wiring. It's important to note that while tankless water heaters may have a higher upfront cost than traditional tank-style heaters, they typically have a longer lifespan and can save homeowners money on energy bills in the long run. Additionally, it's recommended to hire a licensed and experienced professional for installation to ensure proper installation and safety. Ultimately, it's best to get a personalized quote from a reputable contractor to determine the specific cost for your home's needs.
What are the benefits of using a propane tankless water heater?
Propane tankless water heaters have become increasingly popular in recent years due to the numerous benefits they offer. One key advantage of using a propane tankless water heater is its energy efficiency. These units heat water on demand, which means they only consume energy when hot water is needed. This can result in significant cost savings on monthly utility bills.
Another benefit of using a propane tankless water heater is their compact size. These units are much smaller than traditional tank-style water heaters, which means they take up less space in the home. This can be particularly beneficial for homeowners with limited storage space or those who want to free up space for other appliances.
Propane tankless water heaters also offer a continuous supply of hot water, which eliminates the need to wait for a tank to fill up with hot water. This can be particularly beneficial for larger families or those who use a lot of hot water throughout the day.
Lastly, propane is a clean-burning fuel, which means it produces fewer emissions than other types of fuel. This can help reduce your carbon footprint and contribute to a healthier environment.
What are the maintenance requirements of a propane tankless water heater?
Propane tankless water heaters are a great investment for homeowners who want to save money on energy bills and have a continuous supply of hot water. However, like any other appliance, it requires maintenance to ensure that it functions efficiently and lasts for a long time.
The first and most important maintenance requirement for a propane tankless water heater is to clean the burner and heat exchanger. Over time, soot and other debris can build up on these components, reducing efficiency and increasing the risk of malfunction. It's recommended to have a professional plumber or technician perform this task once a year.
Another maintenance requirement is to check the water filters regularly and clean or replace them as needed. This will prevent debris and sediment from building up inside the heater, which can cause damage and reduce efficiency.
It's also important to check the pressure relief valve periodically to ensure that it's functioning properly. This valve is designed to release pressure if the temperature or pressure inside the tank exceeds safe levels.
Finally, it's a good idea to inspect the gas lines and connections for leaks or damage. Any issues should be addressed immediately to prevent the risk of gas leaks and fire hazards.
By following these maintenance requirements, homeowners can ensure that their propane tankless water heater functions efficiently and safely for many years.
What are the top-rated propane tankless water heaters?
The top-rated propane tankless water heaters are those that can provide an efficient and continuous supply of hot water while also saving energy and reducing costs. One of the top-rated propane tankless water heaters is the Rinnai RUC98iP Ultra Series Propane Tankless Water Heater, which is known for its energy efficiency and high flow rate. Another popular choice is the Takagi T-KJr2-IN-LP Tankless Water Heater, which is compact and easy to install, making it ideal for small homes or apartments. The Eccotemp i12-LP Tankless Water Heater is also highly rated for its ability to provide consistent hot water while also being energy efficient. Other top-rated options include the Rheem RTG-84XLN-1 Tankless Water Heater and the Navien NPE-240A-LP Tankless Water Heater, both of which are known for their durability and reliability. Ultimately, the best propane tankless water heater for you will depend on your specific needs and budget.
What is the lifespan of a propane tankless water heater?
The lifespan of a propane tankless water heater can vary depending on several factors such as usage, maintenance, and the quality of the unit. On average, a well-maintained propane tankless water heater can last up to 20 years or more. However, it is important to note that if the unit is not properly maintained and serviced, its lifespan can be significantly reduced.
Regular maintenance is key to extending the lifespan of your propane tankless water heater. This includes flushing the unit regularly to remove any mineral buildup, checking and cleaning the burner, and inspecting the unit for any signs of wear and tear. It is also important to have a professional technician service the unit annually to ensure that it is functioning properly and efficiently.
In addition to maintenance, the quality of the unit also plays a role in its lifespan. Investing in a high-quality propane tankless water heater from a reputable brand can help ensure that it lasts longer and performs better.
Overall, with proper maintenance and care, a propane tankless water heater can provide reliable hot water for your home for many years.
What size propane tankless water heater do I need for my home?
The size of propane tankless water heater you need for your home depends on several factors, including the size of your home, the number of bathrooms and appliances that require hot water, and your hot water usage habits. A general rule of thumb is that a 40-gallon tankless water heater is suitable for a household with up to two people, while a 50-gallon tankless water heater is ideal for a household with three to four people. For larger households with more than four people, a 75-gallon or larger tankless water heater may be necessary.
It's also important to consider the climate in your area and the incoming water temperature. If you live in a colder climate with a lower incoming water temperature, you may need a larger tankless water heater to meet your hot water needs. It's recommended that you consult with a professional plumber or HVAC technician to determine the appropriate size propane tankless water heater for your specific needs and circumstances.