Best Indoor & Outdoor Propane Tankless Water Heater For Cold Climates & High Altitud

To enjoy hot showers, dishwashing and laundry, tankless water heaters are the perfect choice as they provide unlimited instant hot water on demand. If you are concerned about fuel efficiency, then a best propane tankless water heater is the smart decision.

Propane as a liquefied petroleum gas usually compressed and stored as liquid. It is used in tankless heaters to heat water instantly.

A best propane tankless hot water heater uses less energy and provides on demand hot water instantly and value the money spent on it. 

Unlike electric water heaters, proper Ventilation is must for propane gas tankless heaters to ensure safety for your family. Do not go for this if your home does not hold up a proper venting process. 

Climate also affects its ability, so, must consider the climatic conditions a liquid propane tankless water heater can handle efficiently. 

After spending long hours on research, we are presenting unbiased on demand propane water heater reviews. So, you can easily choose the one exactly meeting your instant hot water demands. Check the detailed buyers’ guide to know more about the tankless water heaters.

Best Propane Tankless Water Heater

Choosing the right heater for your family will be your long run investment. Because they provide hot water immediately, save valuable floor space by taking less space by mounting on the wall and most importantly do not pollute the environment. 

Let’s take a look at the unbiased and detailed reviews about tankless hot water heater propane.

1. Rinnai V65IP – Best Indoor Propane Tankless Water Heater Overall

Rinnai V65IP is an ideal tankless water heater for small to medium residential spaces and is perfectly made for indoor usage. This tankless water heater requires a maximum input of 150,000 BTUs and can be ignited with a 0.26 GPM flow rate electric igniter which is quite efficient.

As a result of its incredible hot water flow rate which is 6.5 GPM, RinnaiV65IP is sufficient to serve up to almost 3 bathrooms at the same time. It provides an uninterrupted supply of hot water even at 10,200 ft above sea level.

This unit makes sure that you do not waste your precious time waiting for hot water as it can fulfill different tasks like dishwashing, washing machine, and baths simultaneously. It has an energy factor of 0.82 EF–which makes it extremely efficient. It operates between 98° – 140° F available with the MCC-91-2 controller for hydronic applications.

Rinnai V65IP is an indoor propane tankless water heater and provides efficiency at a very reasonable price. It is a mobile home certified heater with extremely low NOx emission that makes it environment friendly and hazard-free. Its compact size saves your valuable space by installation in non-traditional spaces such as the loft etc. Its built-in error code indicators help consumers to resolves the issue quickly.

Although it comes with all the essentials parts that are required for the installation of the heater, it is recommended to hire a licensed professional to install this unit.

Since this tankless water heater works on propane gas which makes it light on your pocket. This intelligently designed unit is greatly known for its efficiency. It provides energy efficiency up to 94% which makes it one of the best tankless water heater.

The following map helps you to use your location on the map to correlate with legend for average ground water temperature in the U.S.

Rinnai V65IP comes with a built-in Wi-Fi technology that enables user to have full remote control of the heater providing the user with utmost comfort and command.

2. Rinnai RL94IP – Whole House Propane Tankless Water Heater

Rinnai RL94iP is highly praised for its dedicated large water flow rate of hot water. This inline water heater flawlessly delivers 9.4GPM. So, you can use instant hot water extravagantly without the fear of running out during usage.

It is important to note that with the temperature rise of 35°F, this unit is capable of supporting two bathrooms with supply of endless hot water even in extremely colder climates. 

If we talk about the areas with warm climates, then its performance becomes outstanding. It churns out excessive hot water with 9.4 GPM enough for two hot showers, a kitchen sink and laundry at the same time. It serves as a whole house on demand propane water heater.

Indeed this is the best lp tankless water heater for a family of 4 – 5 people with high demand of hot water especially in the morning and evening. 

Coupled with circ-logic technology, this heater sets a recirculation pattern of hot water according to your demand. So, instead of reheating the water and waiting for that , it delivers heated water circulating in the pipeline instantly. 

Being high energy efficient like gas tankless heaters, the uniform energy efficiency range lies between0.81 – 0.82. As this heats the water when it is demanded so there is no energy loss. Thus, there is a drop on the bills. Also, it consumes less fuel during the process as it is featured as a modulated burning type. 

Keeping this in mind, this unit requires a proper venting system. It vents directly to the outside through a concentric venting process. Further, the insulation of hot and cold water lines increases energy efficiency.

This model is easy to go with ½ gas pipelines, so a big advantage for old homes. They can install without upgrading the gas lines. All these features make this model the best indoor propane tankless water heater.

3. Camplux 5L – Portable Propane Tankless Water Heater

Bring home this Camplux 5L tankless propane water heater with an amazing 1.32 GPM water flow rate. This lightweight, portable, and energy-saving heater is perfect for outdoor activities such as camping, family gatherings, and travel trailer. Its affordable price and efficient performance make it a high-demand product. Great heater for outdoor showers, pet washing, and mountain cabins.

You can ignite the heater with 2D batteries that is why it is an ideal choice for off-grid or any other zones where electricity is not at hand. For 1.32GPM this unit provides temperature raise of a maximum 114.8℉ and the minimum temperature raise is 46.4℉.

This heater has the lowest startup of water pressure available on the market i.e. 3.0 PSI. Moreover, the system works perfectly with a Camplux 12-volt water pump(Camplux model number -JK-2202/JK-3206).

Consisting of Overheat and anti-freezing protection system, flame failure kit, and oxygen depletion safety shut-off protection makes sure that each time you have an amazing outdoor hot water experience. It’s highly efficient 11.5% energy-saving technology enables you to save a lot of energy and money. It provides a maximum power output of 28,000btu/hour and requires 0.4PSI propane gas pressure for operation.

Upon purchasing this portable hot water heater, you will get all the necessary equipment including a propane hose along with a gas regulator to ensure an unstrained installation. You just require a decent supply of water, propane gas, and electricity to run this propane tankless hot water heater. If there is no electricity available, this system can still operate on 2D cell batteries.

The automatic anti frozen system takes measure to make sure proper functioning even if the temperature falls under zero.

4. Gasland Tankless – Propane Instant Water Heater

BS158 is an outdoor tankless propane water heater that comes with a removable drain faucet that comforts you by getting rid of any residual water so that your heater avoids blockage due to frozen water during winters.

The unit ensures an uninterrupted flow rate of 1.58 gallons per minute with an input of 41,000 BTU/hour. With this unit you can enjoy instant delivery of hot water at your end so that you do not have to waste your precious time on preheating. Its intelligent temperature sensors protect your family from any unpleasant event.

It works on LPG (liquefied propane gas) and 2D batteries in case of unavailability of electricity and rest is a decent water supply.

This efficiently designed unit due to its small size and lightweight is the perfect fit for your vacations. This unit comes with a strong metal handle which makes it easy to carry. It provides temperature safety over 167 °F of hot water and automatically stops the gas supply under abrupt flameout.

This heater intelligently controls and reacts to situations like overpressure, overheating, etc. Its low start-up pressure i.e. 2.5 PSI helps you to save more energy and money. This unit has advanced energy-saving technology that saves around 11.5% energy.

This is an easy to install unit, you just have to follow the clear instructions which are provided in the consumer guide. It comes with 5 feet propane hose and all the essentials except for the batteries. GASLAND BS158 ensure that you have everything you need to install and enjoy an uninterrupted supply of hot water.

5. Eccotemp L5 Portable Outdoor – Best RV Propane Tankless Water Heater

Eccotemp L5 is a CSA-approved portable propane instant hot water heater that promises quality, affordability, and most importantly the safety of the customers. This outdoor heater is a great choice for instant hot water supply for camping, outdoor showers, animal washing, food trucks, and cleaning vehicles, etc.

This system comes with some amazing features such as manual water and gas adjustment option to get the desired temperature and an electronic ignition powered by 2 “D” cell batteries that make it even fit for off-grid areas where electricity is not available.

It requires an optimum range of 20~80 PSI and 37 500 BTUs to produce an output of 1.5 GPM.  EccoFlow 12-volt pump and strainer is recommended, in case you have low water pressure. To operate this unit, you just need to simply link a garden hose and a liquid propane tank of 20-pound (lb.).

The L5 tankless water heater provides an achievable temperature range of  50 to 140 degrees Fahrenheit. This product has 1- year warranty, support based on appointment available  M-F, 8 am-8 pm EST and 24/7 online guidance. Your peace of mind and comfort are guaranteed with this product as it comes with proper instruction manuals and troubleshooting steps.

This water heater is featured with an automatic system that shuts down the system after 20 mins of working. It helps you to save more energy and by preventing unnecessary use of fuel in the state of non-usage.  Moreover, children’s safety is also ensured with Eccotemp L5 since it only works when turned on.

Because of its lightweight(13.8 pounds) and compact design it is easy to carry with you and can be installed anywhere. However, it is necessary to ensure that you have a distance of  2’’ from a wall, 18’’ from the ground, and  3’’ from a window. Besides that, make sure that there isn’t anything flammable around the heater. This RV propane tankless water heater review will help you to buy the best unit for you.

6.Rinnai V75IP Tankless Water Heater Propane – Best Value Propane Indoor Heater

Being a robust model powered by propane, highly energy efficient, Rinnai V75iP is especially designed for indoor installation. 

Being a robust model powered by propane, highly energy efficient, Rinnai V75iP is especially designed for indoor installation. 

Surprisingly, this liquid propane tankless water heater is noticeably cheap and a a great fit to fulfill small to medium-sized homes. 

Because of smart dimensions, V75iP does not require much valuable floor space. Easily mount on the wall and perform well. 

Having an ideal flow rate of hot water which is 7.5 GPM, this unit allows multiple water appliances to be used concurrently. It supports two bathrooms efficiently. Although this is true that high flow rate depends on warm groundwater. The flow rate will be much lower in colder climates. 

With warm incoming water, as in Hawaii, you can enjoy around 5 water applications simultaneously. But if you head to northern areas with extreme cold weather and cold incoming water, the number of appliances will be reduced to 2 – 3 fixtures. 

Being a strongly featured model with a maximum 180,000 BTU, this propane on demand water heater reduces long waiting time by providing hot water instantly. It takes only a few seconds to heat the water which makes this best tankless water heater propane fueled.

Together with this, this unit is designed for indoor installation, so it demands a propped venting system to exit the wasted gas. 

The only issue with this model is the loud noise it makes during operations which can be irritating.  The good thing is that it releases extremely low carbon dioxide. Thus this is an environmentally friendly heater saving the atmosphere from being polluted. 

Additionally this unit has 0.82 UEF, but is still energy efficient and helps reduce energy bills considerably. 

If you have some plumbing skill, then installation of this indoor propane heater is not a big deal. Otherwise, you must seek a professional for accurate installation which is important for  optimal performance. 

Equipped with a mobile app, this heater allows you to set a schedule of heating time throughout the day. You can  even put it on vacation mode when hot water is not required, enabling you to save bucks spent on fuel.

Rinnai V75iP offers amazing warranties for labor:1 year, parts:5 years and heat exchanger: 10 year.

7. Rinnai V65EP – Top Outdoor Tankless Propane Water Heater

65eP is one of the best lp gas tankless water heater for small to medium houses, outdoor installation. This is a high efficiency, reliable and value in a propane gas tankless water heater. It has a slightly above average 150k BTUH with 6.6 GPM which makes it ideal for 2-3-bathroom homes.

With Rinnai V65 you can have instant hot water supply with a 10-year warranty on heat exchanger, 5-year on parts and 1-year on labor. It is a slightly more efficient model than other non-condensing units because of its 82% efficient non-condensing propane unit ( natural gas heater is also available). This is an outdoor propane instant water heater that provides customers endless hot water at a stable pre-set temperature, while saving energy and important space in their homes.

It has an energy factor 0.82 for both natural and propane gas and temperature ranging from 98°F – 140°F. It works perfectly with Rinnai digital controllers.

This Rinnai water heater from V series is designed for on demand water heating by working on natural and propane gas. Furthermore, it is an eco-friendly heater with Ultra-low combustion to reduce pollution. The outdoor models are designed ventless- it has special built in power blower and separate openings for exhaust.

Although this is an easy to install unit, some customers recommend professional assistance in this regard.

8.Marey GA10LP – Lp Gas Tankless Water Heater

Marey GA10LP has the capacity to provide an amazing water flow rate of 3.1 gallons per minute and instant output of hot water up to 115°F. It is a complete package of energy-saving, affordable, and easy to install. propane instant hot water heater

This heater is designed in a way that it can provide hot water supply for multiple faucets simultaneously (covers a wide range of applications for residential areas). You don’t need to worry about electricity connections on vacations, mountains, and motor vehicles. 2D batteries are required to ignite Marey GA10. Being an lP tankless water heater

It does need a proper ventilation system to work efficiently. It provides instant hot water the moment you open the tap and maintains 87% efficiency throughout the lifetime. Its compact design helps to save space and enable the user to easily install almost anywhere.

It provides a minimal output of 3.1GPM on very low-level water pressure for operating. The maximum power output is 79,228BTUs/hr and the minimum water pressure is 20PSI.  This unit works on liquid propane gas and has a decent operating pressure ranging from 5PSI to 140PSI. However, you will need to have a flue pipe to allow the exhaust gases to properly discharge from the house.

Marey tankless water heaters save electricity and water so that you can save money. It is proved to be 60% less electricity consuming heater as compared to the conventional tank water heater. Besides that, it is a DIY and eco-friendly system.

This tankless gas water heater has flame-out protection, anti-freezing protection, over-heating protection, airflow pressure switch protection that provides safety and security to the user.

9. Camplux 10L Portable Propane Gas Tankless Water Heater – Portable Hot Water Heater for Camping

With Camplux 10L outdoor tankless water heater you will receive instant hot water output because of its incredible water flow rate of 2.64 GPM. It is an efficient, affordable, and portable product.

This heater is an ideal choice for small houses, mountain cabins, horse stables or family vacations, etc. You can also install this propane instant hot water heater indoors in a nicely ventilated area with the help of an additional flue pipe- so that exhaust gases travel easily to the exterior of the home. Its innovative ignition with 2D batteries makes it perfect for areas where electricity is not available or off-grid zones.

It provides an applicable water pressure from 3.6～110.0 PSI. Camplux 264 works with 0.41PSI pressure of propane gas and produces a maximum power output of 68,000btu/hour. This unit can also operate with a 12-volt water pump in addition to modified water systems. Camplux 10L is 2.42  consumes 2.42 lb/hour. A 20 lb tank is enough to run the unit for 6-7 hours.

The gas consumption of Camplux 10L is 2.42 lb/hour. With a 20 lb tank, it can run about 6-7 hours which is quite attractive. In order to ensure customer’s safety this unit automatically shuts off after running for 20 mins, then you can turn it on again after 2-3 minutes. This heater features an amazing weather switch through which you can adjust the temperature according to your need.

With all the features offered including dry combustion protection, flame failure device, and anti-freezing protection system, this tankless water heater might be the ideal choice for you. You can save both money and energy with the help of its digital temperature control high thermal efficiency of 88.5 %.

Moreover, this unit comes with CSA authorized gas regulator and necessary adaptors which makes the installation and usage more convenient.

10. Marey Power Gas 10L – Best Propane Instant Water Heater

If you are looking for best tankless water heater that is versatile, budget friendly and easy to install tankless water heater than Marey Power Gas 10L is the perfect choice.

Since this unit operates on only 3V, it works great even in off-grid areas where electricity is not readily available. In addition to this the ignition of this model uses 2D cell batteries. At an optimum water flow of 1.5 GPM, the temperature increases up to 67 degrees Fahrenheit, to provide hot water to your family at multiple faucets.

However, a higher faucet flow might affect the temperature of water so it’s recommended to adjust it at 1.5 GPM. Vent diameter-4 inches. This system saves water and uses 60% less electricity than traditional tank water heater that makes it budget friendly and reliable.

Moreover, it is a well-designed heater that prevents rusting and water lose due to leaks. Marey 10L has an awesome customer service and an amazing 5-year warranty.

This model comes with an amazing Anti- freezing protection system so that in case of freezing point in temperature, the discharge valve is removed to collect the water in the internal pipes to prevent the pipes from freezing.

Due to its portable design portable it is easy to install anywhere except the outdoors. This heater works only when you turn it on an be installed easily. It requires less space to store it. This is an on-demand propane water heater which can be regulated in such a way that water is only heated on demand.

The Marey Power Gas 10L Propane Gas Digital Panel Tankless Water Heater is an affordable and  environment friendly product as it operates on propane gas. This unit will take care of environment as well as all your hot water needs at the same time.

Final Verdict

Propane tankless heaters are equally beneficial for both residential and commercial use. They are not only energy efficient and provide instant hot water on demand but they are also environmental friendly units and offer 50% low carbon emission which is excellent.

The above propane reviews are based on real experiences to make your decision pretty easy to choose the one for you depending on your requirements. I would recommended Rinnai RL 94.

FAQ

What is the best propane tankless hot water heater?

It is a really tough decision to take about the best propane tankless hot water heater when the market is filled with a lot of brands manufacturing tankless water heaters. 

Propane hot water heaters require a proper venting system. Venting may be direct and separate. Each propane model has a different flow rate and is suitable for different climates and hot water demand. 

Rinnai, Eccotemp, Gasland, Camplux and Marey Power Gas are some famous and reliable brands making powerful propane water heaters.

Our propane tankless water reviews provide the detailed information and functions about every propane model. Choose the top rated liquid propane hot water heater ideally fulfilling your hot water demand instantly.

Are propane tankless water heaters worth it?

Lp on demand water heaters are especially designed to meet high demand of hot water while ensuring the minimum use of energy. 

They are compact and wall mounting features make these heaters a great fit for the small homes or the buildings with shortage of spaces. 

Continuous supply of hot water when needed is the special feature of these inline tankless water heaters. So they are becoming an important part of business like restaurants. Hospitals, clubs and residential buildings. 

How much propane does a tankless water heater use?

Propane is used as a fuel in tankless water heaters. As they reduce energy consumption, they are getting popular. 

Calculating propane being used by a tankless water heater is an easy job. 

Simply calculate the amount of propane used to burn for 1 gallon of water. As each tankless water heater requires a different amount. So, calculate accordingly. Generally propane produces 91,500 BTU per gallon per hour. 

A general estimation about tankless water heater is:

Propane tankless water heater: 40,000 BTU per hour or 1.5 gallons per day.

How does a propane tankless water heater work?

Lp water heater works the same way that gas tankless water heaters do. It heats water only on demand. They prevent standby energy loss, a notorious flaw of storage tanks. 

They offer versatile venting options. Venting can be done using cheap PVC pipe directly through the wall. Combustion fan emits the exhaust from the unit. 

Propane tankless water heaters help you save a considerable amount of dollars yearly.