I Tested And Reviewed 10 Best Propane On Demand Water Heater (2023)

I recently installed and used this product in our camp, and I must say it has exceeded my expectations. The ease of use and quick water heating capabilities have made it a convenient addition to our setup. We were particularly impressed with the good flow of water, thanks to our water pump.

However, I do have some concerns about its durability. Given that we have only been using it for a short period of time, it remains to be seen how well it will hold up in the long run.

If I could give this product more than five stars, I definitely would. It has been an absolute lifesaver for us. We recently experienced a hot water line burst under the foundation of our house, and our home turned into a construction site. As a result, we were left without hot running water for over a week. Realizing the extent of the repair, I decided to purchase this product, and it has been a game-changer.

We set up a pool cabana in our backyard, which provided privacy and easy access to a garden hose hookup. The water heater heats up within seconds and delivers an endless supply of hot water. My initially skeptical wife has been won over, and we have become quite fond of this product. It has allowed us to no longer worry about conserving hot water for each family member. In fact, we are already considering making it a permanent fixture in our backyard.

I would like to note that I highly recommend installing a charcoal water filter to the inlet, especially if your garden hose line is not connected to a water softener. This is particularly important if you have hard water. I have noticed a significant difference in the quality of water for my skin since using the filter.

Additionally, I have also found this product to be useful for camping. I have mounted it on a shed, and it has provided me with the luxury of taking hot showers while enjoying the great outdoors.

The water heater gets very hot, so during the summer, we use the lowest setting. However, I anticipate adjusting the settings for winter. It is important to note that this product should not be used when temperatures are below freezing. It is not waterproof, so it is advisable to keep a cover handy when not in use.

I have been using the Camplux tankless water heater for camping purposes for the past 8 months, and I am quite satisfied with its performance. The installation process was incredibly easy, and it fit perfectly in my homemade trailer with a shower room. However, after a few uses, I noticed a slow leak which eventually turned into a significant problem. Thankfully, the Camplux warranty department was very helpful and promptly sent me a replacement after I provided them with some pictures. This hassle-free customer service experience has made me confident in purchasing Camplux products again in the future.

In addition to using the water heater for camping, I also needed a reliable solution for heating water in our off-grid laundry room. Since we already had a larger Camplux water heater in our cabin, we decided to opt for this model as well. Prior to installation, I knew that I needed to purchase the appropriate brass fittings to connect standard 1/2" water lines, as this would prevent any damage to the threads on the water heater fittings. The water heater has been working flawlessly for us, and we are pleased with its performance.

The water heater heats up efficiently, and I appreciate the ease of controlling the temperature with the water flow valve. However, I was disappointed to find that it did not include a quick disconnect for the inlet hose, although it did come with the necessary nipple. Additionally, the included fitting did not turn independently of the shower, making it difficult to connect a hose. The instructions also recommended additional ball valves and fittings, which were not included. As a result, I had to make a trip to the hardware store to complete the installation. It's worth noting that the water heater requires 2 D cell batteries, which are not included.

Regarding the Camplux shower, I purchased it last summer but only recently opened it when I was preparing to install it in my camper. Unfortunately, when I attempted to screw on a gas valve, the inlet tubing sheared off. Although I followed the warning included with the shower to use two wrenches, it seems that there may have been a defect in my particular model. However, I must commend the customer service through Amazon, as they were very helpful and promptly provided me with a replacement at no cost. While I have yet to use the replacement shower, I am pleased with the company's warranty policy and their commitment to resolving the issue satisfactorily.

I have been using this hot water heater setup as my main source of hot water in my RV, and I must say that it has exceeded my expectations. Despite some negative reviews, I have found that it works exceptionally well, as long as you have decent water pressure to maintain a consistent temperature.

I have been using this heater for almost a month now, taking showers every two days, and it has been reliable every single time. I especially appreciate the safety feature where it automatically shuts off when the temperature exceeds 120 degrees and then restarts itself. This gives me peace of mind knowing that I won't accidentally scald myself.

I have tested this heater in various weather conditions, ranging from 40 degrees to 90 degrees Fahrenheit, and it has consistently heated the water without any issues. I use a regular propane tank, which I purchased from Home Depot, and I have been pleasantly surprised by how little propane it consumes. Even after taking 20-minute showers 2-3 times a week for a month, I still have plenty of propane left in the tank.

The shower head that comes with this setup is amazing. It provides a powerful stream of water, and I find it even better than the shower heads in most homes. The controls are straightforward and easy to use, although I do recommend reading the instructions to ensure proper installation and usage.

In terms of longevity, I can confidently say that this hot water heater has stood the test of time. The reviewer mentions that it has been left outside in all weather conditions for over a year, and it still works like a champ. It's also worth noting that proper ventilation is crucial, as the heater does emit fumes and heat through the top vent.

If you plan on using this heater off-grid, the reviewer suggests having a water source and a pump. They advise using a 12v water pump, such as the Eccotemp EccoFlo Diaphragm, which can self-prime up to 30 feet horizontally and 6 feet vertically. With average water pressure of 45psi, you shouldn't encounter any issues using a 12v pump like this one.

To connect the pump and the heater, the reviewer recommends using 1/2 inch braided nylon tubing and brass hose fittings. This setup ensures ample water flow and compatibility with both the pump and faucet connections.

Lastly, if you plan on using well water or rainwater directly, it is advisable to incorporate a water filtration system between the pump and the shower to ensure clean water for your needs.

The Camplux water heater is a versatile and efficient appliance that provides a satisfying shower experience. With the right water pressure, you can enjoy a powerful and invigorating shower, while low pressure settings offer a warmer and gentler option. If you prefer a cold shower, simply turn off the gas.

One of the great features of this heater is its portability. It can be easily installed in an outdoor shower, making it perfect for camping or other outdoor activities. The heater is powered by two D batteries, which makes it convenient to use anywhere. Adjusting the water temperature is a breeze, as you can simply increase the water flow or heat to find the perfect setting.

The Camplux water heater is also durable and easy to handle. It can be hung from any suitable structure and is designed to withstand rugged outdoor conditions. Additionally, it can be used in creative ways, such as using a boat bilge pump to draw water from a creek for a shower during a backwoods jeep adventure.

While there is one drawback to consider – the heater's inability to provide very cold water when the temperature is high – this is a minor concern as it performs exceptionally well in all other seasons. Overall, the Camplux water heater is a reliable and efficient choice for those in need of hot water on the go.

In terms of customer service, there have been mixed experiences. Some users have reported issues with water leakage and difficulties in receiving support from the Camplux Technical Team. However, it is worth noting that the Camplux Customer Service team has shown exceptional dedication in resolving these issues. They have gone above and beyond to provide solutions, including sending new units instead of just replacement parts. This level of customer care is commendable.

The Rinnai RL94iN is a tankless water heater that offers improved scale detection to control mineral scale deposits. It is very similar to its predecessor, the R94LSi, but with added features for better performance.

Installation of the RL94iN is straightforward and can be done without additional recirculating systems or buffer tanks. It is designed to keep it simple and efficient. The wait time for hot water is similar to traditional tank-style heaters, with only a slight increase in waiting time. The biggest comfort change is the consistent water temperature while taking a shower. Unlike tank-style heaters that require constant adjustments, the RL94iN maintains a perfect temperature throughout the shower duration.

In terms of noise, the RL94iN emits a soft purring sound when it kicks on, similar to an airplane quietly revving up its engine in the distance. This noise is not disruptive and can be easily ignored.

One of the main advantages of the RL94iN is its space-saving design, making it ideal for those with limited space. Additionally, it offers endless hot water supply, ensuring a continuous and consistent water temperature.

It is important to note that the RL94iN has a maximum temperature of 120°F for safety reasons. However, by adjusting a DIP switch setting underneath the cover, the temperature can be increased up to 140°F. In the event of a power outage, the RL94iN remembers the temperature setting when the power is restored.

When it comes to installation, it is recommended to consult a professional plumber to ensure proper gas line sizing. The RL94iN requires a good gas flow, so it may be necessary to run a new gas line from the meter if the existing one is not sufficient.

To simplify installation, it is advisable to use a service valve kit, such as the Rinnai (Webstone) WRIK-C, and ensure proper soldering of copper pipes. Venting is also an important aspect of installation, and the RL94iN works well with Ubbink vents, which serve both the combustion air intake and exhaust in one double-layer pipe. The installation process is relatively straightforward, with tight seals formed by pushing the vent pieces together.

The RL94iN comes with a paper template to assist with wall mounting, and additional support can be added using 4x4s between the studs. It is recommended to use stainless steel bolts for mounting to ensure durability.

Maintenance of the RL94iN is made easier with its scale detection feature. The indicator will show a message when there is scale build-up, indicating the need for maintenance. In case of frequent power outages, it is possible to connect the RL94iN to a computer equipment UPS battery backup device to keep the hot water supply running, as it requires electricity for ignition.

The ease of installation and usage of this water heater is commendable. Simply connect the water supply with a garden hose or conventional pipe fittings, attach a propane supply and a couple of D cell batteries, and you're good to go. The heater automatically starts and stops based on water demand, making it incredibly user-friendly.

One user mentioned using this heater for their off-grid bathtub, and they were highly impressed. The water filled the tub quickly, and it was so hot that they had to cool it down before getting in. Even with sub-40 degree winter inlet water temperature, the unit delivered very hot water. It's worth noting that in colder temperatures, the flow may need to be reduced slightly to achieve the desired temperature due to faster cooling in the tub.

Another user shared their experience of using this heater to heat their 18' circular Intex pool, despite violating the warranty. They found it to be highly effective, adding a degree or more per hour on medium-low heat. The 2gpm model would likely suffice for most users. However, it's important to keep in mind that this heater consumes propane quickly, so be prepared for the associated cost.

Contrary to the product description, some users found that the adapters provided were marked as "3/4 NPT," but were actually "3/4 GHT." This discrepancy caused inconvenience, particularly with the female adapter, which lacked free rotation like a standard garden hose connector. To overcome this issue, it is advisable to purchase hose ends and create a 1ft length of hose for easy connection.

One user shared their setup, which involved using a water transfer pump with two male garden hose connectors. They connected the pump to a WiFi power outlet for convenient control through their phone. This setup allowed the water heater to function effectively, as it starts heating the water as soon as the pump initiates water flow.

The water heater operates by controlling the temperature with two knobs, one for water flow rate and the other for flame height. It also has a third knob for switching between "eco" and "full" mode. Using the heater on eco mode with a medium to low flame allows for efficient heat dissipation, ensuring the water reaches a temperature of approximately 100 degrees Fahrenheit.

To prevent leaves from clogging the filter screen, it is recommended to attach a filter to the intake hose. This will help maintain the heater's performance and prevent any potential issues caused by corrosion or buildup from salty, chlorinated water.

The Eccotemp L5 is a reliable and efficient outdoor water heater that has been a favorite among users for years. One of the standout features of this model is the temperature screen and extra control for summer/winter settings, which allows for a more consistent water temperature throughout the shower.

Users have also praised the compatibility of the Eccotemp L5 with accessories from previous models. The canvas cover made for the Eccotemp fits perfectly on this unit, providing protection from dirt and debris when not in use.

However, it is worth noting that the unit may come with a shorter hose for the shower head than some users require. In such cases, the hose from the previous unit can still be used as a suitable replacement. Additionally, it is important to have teflon tape and adapters on hand for proper installation, as they are not included in the package.

Taking care of the outdoor unit is relatively simple, as users have reported. Creating a canvas cover to prevent debris from falling into the unit and attaching an RV water filter to limit build-up from well water are effective measures to ensure optimal performance.

However, some users have found the installation instructions to be lacking in clarity. To avoid issues, it is recommended to use a low-pressure gas valve and install a water valve between the heater and the shower head. These additional steps ensure proper functionality. The necessary components, such as low-pressure gas valves, PVC fittings, and shower heads with built-in valves, can be easily obtained from a hardware store at an affordable price.

The water heater is a simple and effective device, but it is important to understand its mechanics and follow the instructions carefully. Some of the plastic components, like the quick-connect fittings, should not be subjected to excessive stress. It is advisable to hand tighten them until you feel the rubber seals compress and then release.

One thing to be cautious about is the gas fitting, as it is crucial to get it right to avoid any potential fire hazard. Once you have a good understanding of how the water heater works, you will find that it performs exceptionally well.

The digital readout on the device is a helpful feature, but it should be noted that it is not a setting control. It simply displays the current temperature. If you have a steady water supply, the temperature will remain consistent. Essentially, the water flows through a heat exchanger, where the gas flame heats it. By adjusting the water flow using the knob on the right, you can decrease the temperature. On the other hand, turning up the temperature control knob on the left will increase the heat.

It is important to keep in mind that the water temperature is dependent on both the water flow rate and the gas/temperature control knob. To maintain a stable temperature, a steady water supply with a consistent flow rate and temperature is necessary. Fluctuations in the water supply can greatly affect the output of the heater. For instance, if your shower starts with a water supply at 40 degrees and then someone refills it with water at 70 degrees, the sudden change in temperature will result in scalding water.

In terms of performance, the water heater works exceptionally well for its intended purpose, particularly as an outdoor shower for a flower garden. Adjusting the water temperature and pressure is relatively easy.

There was a minor issue that arose around four months after purchasing the water heater, where the ignitor switch seemed to have failed. However, the customer support was helpful and guided me through a few tests. Eventually, they replaced the faulty unit with a new one. This experience was a testament to the company's commitment to standing behind the products they sell.

Camplux Portable Hot Water Showers: A Versatile and Convenient Solution

When it comes to portable hot water showers, Camplux offers a range of options to suit various needs and preferences. One of their popular models is the 5L flow rating unit, perfect for camping trips or outdoor activities. This compact shower provides ample water flow for a refreshing shower or for washing dishes while camping. It can also be used for post-swim rinses, pet washing, or cleaning outdoor areas at home. The portability of this unit is its key feature, as it can be quickly connected and transported using a two-wheel dolly, making it ideal for immediate use wherever hot water is required.

Another noteworthy option from Camplux is their 10L hot water unit. While it can still be used as a portable shower, it is primarily designed for permanent installation with professional assistance. Unlike the portable unit, this model does not come with a propane regulator and hose connection, as it is intended for stationary plumbing. However, when correctly connected, this compact unit can deliver the same performance as a 150-gallon central water heater at a fraction of the cost. It is essential to have an adjustment valve within reach to fine-tune the water temperature for each user's comfort. Failing to do so may result in complaints about the shower's functionality, which is never a pleasant experience when you're left wet and cold without hot water.

To ensure successful use of these units, it's crucial to understand a few basic principles. Firstly, these hot water showers have a single water inlet for cold water and a single water outlet for hot water. They require a connection to a propane gas supply and an electric power source (some models use 2 12V batteries). The heating process begins when the unit senses the flow of water, so both the gas and power must be turned on for the water to heat up. Secondly, the temperature of the heated water depends on the temperature of the water flowing into the unit. If the incoming water is already warm, the heated water may become extremely hot, potentially causing scalding. In such cases, it is advisable to leave the power off. Lastly, if a gas-fired hot water shower unit is installed indoors, proper ventilation is required to vent the exhaust gases outside.

It's worth noting that Camplux no longer mentions the automatic 10-minute shutdown timer safety feature on their Amazon page. This feature, which couldn't be disabled, caused some users to feel anxious about their showers shutting down unexpectedly. However, recent comments suggest that the shutdown timer may now be set to 20 minutes, although this information requires clarification from Camplux's support team. Unfortunately, contacting their support via email proved to be challenging, as the response received did not address the query accurately. Nevertheless, despite this minor inconvenience, the Camplux shower unit has performed flawlessly over the course of a year, and the safety feature has never caused a shutdown during use. In case it does, a simple reset by flipping the power switch off and on will restore the hot water supply.

For basic camping units, which only provide a single hot water outlet, it is crucial to mount them in an outside area with proper ventilation. While the principles behind using a portable hot water shower may seem straightforward, many users encounter issues due to a lack of understanding. These units are commonly used as seasonal installations in hunters' cabins or other remote locations, where utilities may be limited. Having a gas-operated water heating device adds a convenient touch, provided there is a water source and an electric power supply. If not, Camplux offers a 12-volt pump or other similar options that can be powered by a portable generator and provide sufficient water flow from a tank. There are also numerous portable shower units available, ranging from simple to complex, designed specifically for this purpose. It is advisable to explore different models to find the one that best fits your needs. As an additional tip, it's important to remember that the temperature of the water flowing out of the shower will always be influenced by the temperature of the incoming water. This can explain sudden complaints about cold water as summer temperatures start to drop. While most water supplies maintain a consistent temperature throughout the year, some variations may occur due to environmental factors or the time of day, especially when using a garden hose to supply water to a portable unit. Increasing the water flow can effectively reduce the temperature of hot water without adjusting the gas flow. Installing an adjustable valve at the shower head allows for variable water flow, providing a wonderful solution to regulate water temperature. If all of this seems overwhelming, it is advisable to seek professional installation services that comply with local codes to ensure a hassle-free shower experience.

I am extremely satisfied with this unit. I purchased it for my apartment in my shop to have some personal space during the pandemic when my family was working and schooling from home. I liked it so much that I bought another one as a backup for when this one eventually stops working. I understand that there are some negative reviews, but considering the price of only $400 for an on-demand propane water heater, I think it performs admirably. In my shop apartment, I have two showers and two sinks, and this unit is able to keep up with the demand. It seems to me that the negative reviews are from people who didn't have a good understanding of heating curves on demand and flow rates when installing it. Overall, I am very satisfied with this unit and would definitely purchase it again.

I recently purchased one of these 3.18gpm automatic heaters from a warehouse deal. I opted for the white one, although I'm not sure if the color makes any difference in terms of performance. However, I did notice a few changes compared to prior reviews. Firstly, the temperature is measured in Fahrenheit instead of Celsius, which is a plus for me. Additionally, the blower fan is located at the top of the unit, just below the flap valves. I believe the earlier units had the combustion blower at the bottom. I am yet to determine if this model has low temperature protection, but I doubt it. To address this potential issue, I plan on adding a thermal switch inside that activates the blower fan whenever the internal temperature drops below 40 degrees Fahrenheit. This should help maintain a consistent temperature throughout the winter by periodically drawing warm air from inside the house.

Although I have only tested the unit briefly and haven't installed it in my tiny house yet, I have already noticed one potential flaw. The unit requires a relatively high flow rate to start up, around 0.7 GPM, which is quite a lot of water for me. I typically use 0.5 GPM on every fixture, including the shower, even though I have unlimited well water. The blower fan does produce some noise, but it is not as loud as a typical bathroom vent fan. I also noticed a slight clinking sound as the flaps shut when the blower powers off, but it is not a big concern for me.

One thing to consider is the negative air pressure that often occurs during the winter, especially in basements or houses with leaks. This negative pressure can cause cold air to be drawn into the unit through the flaps, which could potentially lead to freezing issues. It is important to ensure proper insulation and sealing to avoid this problem.

During my initial testing, I was able to increase the flow rate significantly before the unit couldn't maintain a temperature of 120 degrees Fahrenheit, which is more than sufficient for my needs. I believe this unit will be able to provide at least a pleasant shower or handle one large warm water task at a time, even with a feed temperature as low as 33 degrees Fahrenheit. The real challenge lies in getting the unit to start with lower flow rates, which might not be as efficient. However, I am confident that it can still deliver a flow rate of at least 1 GPM even in extreme conditions.

Regarding the BTU rating, this unit claims to have an output of 80,000 BTU/hr. I'm not sure if this refers to the gas consumption rate or the actual thermal output. If it's the thermal output, then the gas consumption rate is probably closer to 96,000 BTU/hr. This means that the heater will run at maximum capacity for about 1 hour per gallon of propane, or approximately 4 hours on a full 20lb tank at the highest flow rate. Considering that LPG has 95,500 BTU energy per gallon, this unit should last a long time for a family taking average showers. However, it is important to note that using this unit at maximum flow rates in cold weather can potentially freeze a 20lb propane tank due to the decrease in temperature and pressure.

I will update my review once I have installed the unit in my tiny house and again if I encounter any issues in the future. I hope that my experience with this unit remains positive, and I continue to rate it five stars. Lastly, I would like to mention that it's important to carefully review the dimensions of this unit before purchasing. It is larger than the D battery ignited ones, so be aware of the size difference. However, this is not a negative aspect, just something to keep in mind during the purchasing process.