I Tested And Reviewed 10 Best Tankless Water Heater For Rv (2023)

I recently purchased this tankless water heater for my tiny home and I am extremely satisfied with its performance. I have connected my main water lines to my sink, shower, and toilet, and also have a T-connection from the main water line feeding into the water heater. I had to get a few fittings to accommodate my PEX water lines, but once everything was set up, it worked like a charm.

My family of three can now enjoy daily showers without ever experiencing a drop in water temperature. The water stays consistently hot, even during 20-minute showers. However, it is important to adjust the temperature properly to achieve the desired warmth. I highly recommend this tankless water heater for its efficiency and reliability.

One thing to note is that the unit I received initially wasn't working. Despite not having any previous experience with propane appliances, I decided to troubleshoot the issue myself. After watching some YouTube videos, I discovered that the flame would ignite for only a second before turning off. I removed the front white cover of the unit and checked all the electric plugs to ensure they were secure. I then noticed that one of the wires going into the burner was too far from the igniter. I bent it until it was approximately half an inch away, similar to the other wire, and the heater turned on instantly. It was a simple fix that anyone can do, even without any mechanical knowledge.

I am also pleased with the overall design and quality of the unit. After applying Teflon tape to all the inlets, I connected my garden hose using a male/male adapter down to 1/2". The connections were hand tightened and given a slight tightening with a wrench. The unit's case and finish are impressive, as it feels thick, solid, and of high quality.

Upon firing up the water heater, I was delighted to find that the pressure was excellent, surpassing any previous experiences I've had with house water pressure. It started storming just as I finished connecting everything, so I didn't get a chance to check the water temperature at the highest flow rate and in the "winter" setting. However, the water was hot to the touch and probably too hot for a shower. Adjusting the temperature towards the "summer" side easily cools it down. While the shower head provided is not the highest quality, it functions well and can be easily replaced if desired.

Considering the price and overall performance, I would confidently give this tankless water heater a 5/5 star rating. It exceeds expectations and provides an exceptional shower experience. I couldn't ask for more from a water heater.

I recently purchased the RecPro on-demand hot water heater and overall, I am quite satisfied with its performance. However, there are a few issues that potential buyers should be aware of before making a decision.

One of the main drawbacks of this unit is its single mode operation. This means that when adjusting the water pressure, especially during a shower, the temperature can be affected. Lower water flow can result in higher temperatures or even a sudden drop in temperature if the unit reaches its cut-off point. In my experience, I found a workaround for this issue by placing the controller near the shower and using only the hot water knob. This helped to maintain a more consistent temperature.

In terms of installation, I found it relatively easy to swap out the old hot water heater with the RecPro unit. The propane line could be unscrewed from the old heater and reconnected to the new one with some minor bending of the tubing. However, I did encounter a slight challenge with my PEX water hoses. Since I was using twist lock connectors and the old lines had bypass valves and crimp connectors, I needed to modify the hoses to ensure a proper seal with the new connectors.

The remote control provided with the unit is user-friendly, with a good-sized display that is easy to read and set. It offers convenient control over the temperature settings.

One important point to note is that under low water pressure conditions, the unit may struggle to maintain the desired temperature. This is not a fault with the unit itself but rather a limitation that is common with on-demand water heaters. It is worth considering if you frequently camp in areas with less than ideal water pressure.

Unfortunately, the customer service and technical support provided by RecPro did not meet my expectations. When I encountered an issue with the maximum heating level, I was only able to speak to a customer service representative named Jen, rather than a technician. Jen's only solution was for me to return the unit to Amazon for an exchange, which was not practical for me considering the time and effort I had already invested in the installation. I ended up hiring my own local technician who determined that my propane regulator was not adequate for the demand required. Once I upgraded the regulator, the issue was resolved. It is disappointing that RecPro's support was lacking in this regard.

Despite the lack of reliable technical support, the RecPro on-demand hot water heater itself performs well once properly equipped. It provides hot water efficiently, akin to a geothermal hot spring, and can offer hours of hot shower bliss. However, I would caution potential buyers to be prepared for any potential issues that may arise and consider upgrading their propane regulator if necessary. Overall, considering its performance and price point, the RecPro on-demand hot water heater is a solid option for those seeking an upgrade in their RV or travel trailer.

I recently purchased the tankless water heater for my toy hauler, and I must say, it has been a fantastic addition. The compact size fits perfectly in my limited space, allowing me to also install my water filtering system in the same compartment as the water heater. One of the features I love is the ability to adjust the water temperature without having to use cold water. It's incredibly convenient.

Installation was a breeze, and all the necessary items were included. I did have to purchase sealant and make sharkbite lines to connect my water line to the heater, but it was a minor inconvenience. The fitment was great, and I experienced no leaks. The built-in pressure valve eliminated the need for any additional valves. I do recommend using butyl tape on the flanges where it meets the outside camper wall and between the door and the flange, as well as caulking around the door frame after installation.

Using the tankless water heater is extremely easy. Simply push the power button, use the arrows to set the temperature, and in under a minute, you'll have water at the desired temperature. It's a game-changer for my family, as we can now enjoy hot showers whenever we want. The only downside I noticed is that the door frame tends to bend easily if the screws are tightened too much, and the handle doesn't sit completely flat when closed due to the spring tension. It's not a major issue, but it's something to be aware of.

Unfortunately, I initially encountered a problem where I didn't have hot water despite following the installation instructions. However, the customer service provided by Jack at rvranein was exceptional. He responded to my emails promptly and suggested that I try reversing the water lines. Surprisingly, that fixed the issue, and the water heater has been working flawlessly since. I'm grateful for their excellent service and willingness to help even though I was past the return date.

Since installing the tankless water heater, I've noticed a significant reduction in propane usage. Unlike the old water heater, which would heat up multiple times throughout the night, the tankless only runs when hot water is being used. It's a cost-effective and energy-efficient solution that I wish I had discovered years ago.

I recently purchased my second unit of this product and I must say, I highly recommend it. The ease of use, installation, and connection make it a great choice. Not to mention, it works flawlessly and provides hot water for as long as you need.

I did encounter a small issue with the first unit being damaged during shipping, but the company's customer service was exceptional. They replaced it in record time without any hassle.

The normal RV propane water heater tanks usually deliver inadequate hot water for a bath. However, with this product, I can finally fill my tub with water at 108 degrees F and enjoy a relaxing bath. It works so well that I even decided to plumb it into the hot water line and added a shutoff valve to the input of my other water heater as a backup. This technology has been widely used in Europe for years, and I believe outdoor enthusiasts in America will be delighted with this wonderful product.

One thing to note is that, like all mid-grade tankless water heaters, it's important to exercise caution when tightening the fittings. I found that using pipe dope provides a better seal than tape, especially when dealing with water under less force. Additionally, it's worth considering the order in which you assemble the fittings, as the outlets can be tightly grouped. However, despite these minor considerations, the overall design, ease of use, and quick installation of this product are outstanding. I am even planning to purchase a second unit and will be taking a closer look at the company behind it. I anticipate that it will be quite some time before I transition to wood-fired hot water, as these little buggers work beautifully!

I have tried four different versions of this type of heater from various manufacturers, and this one is not only the best priced but also produces the hottest water at an elevation of 4000'. However, it's important to note that this product should not be installed in an enclosed cabinet or in an area with poor ventilation, as it may flame out.

Lastly, I must share a personal experience. Unfortunately, my house burned down, and I was forced into temporary living arrangements. This product provided me with hot showers every day for two months without a single issue. I am extremely grateful for its reliable performance during such a difficult time. I would give this heater 10 stars without hesitation.

I recently purchased this on-demand water heater as a backup for our existing one, and so far, I am quite impressed with its quality. The packaging was secure, ensuring that the unit arrived undamaged. Upon opening it, I found that the unit itself is well-made and durable.

The accessory package that came with the water heater exceeded my expectations. The shower head has three different modes, and there is a convenient button to stop the water flow at the shower head. The stainless steel flexible hose is of high quality and much better than the typical rigid plastic hoses found in other models. The kit also includes everything you need to attach it to your cold water input, including a quick connect coupler.

I have found this water heater to be worth the money. Despite taking long showers that last at least an hour, my propane tank has not run out yet. I use a Blue Rhino refillable tank that is typically used for gas BBQ grills, and it has lasted me about three weeks. I have even started preferring outdoor showers, especially at night.

During the winter, I take precautions to prevent freezing by covering and wrapping the water heater in heat tape. However, if the temperature drops below 25 degrees, even with heat tape, I bring the unit inside to avoid any damage. In the past, I have had to replace the water heater once a year due to freezing, and I have found that using anti-freeze as a preventive measure does not yield satisfactory results.

I am thrilled with my purchase as I can now take a shower while at my cabin. This little water heater is fantastic. The only improvement I would suggest is to have the controls placed inside rather than outside. It takes a few adjustments to find the right temperature, but once you do, it provides a great showering experience.

I recently purchased this water heater and I must say, it has exceeded my expectations. The amount of hot water it produces is impressive, to say the least. I did encounter some issues with the pipes melting, but I was able to solve this problem by using a heat sink and a few feet of brass pipe. It's worth noting that the 1/2" threaded connection worked better for me than soldering.

Installation was a breeze. All I had to do was hook up the garden hose to one side and the shower head to the other. I also inserted two "D" size batteries and I was good to go. I even plumbed it into my travel trailer, allowing me to have endless hot water wherever I go.

Initially, I had some trouble with the display not lighting up. However, I soon realized that the display only turns on when there is water flowing to it or pumping to it. Once I made sure the pump was on, it started working perfectly. I couldn't be happier with my purchase.

I also found this water heater to be perfect for washing horses. It is reasonably priced and provides good pressure, making it ideal for this specific task.

I must say, I am super impressed with this water heater. It started right up once I put the batteries in correctly (oops!). The flow of hot water was great, and I quickly learned to adjust the temperature using the three dials provided. The shower head that comes with it is of good quality and easy to use.

I plan on using this water heater for a new bathroom construction at my campsite, and eventually, I will plumb it in semi-permanently. I wanted to make sure it would work before my 30-day return period ended, and so far, it has exceeded my expectations. In the meantime, I will continue to use it for various cleaning and camp activities.

I have been using this product in a way that goes beyond its intended purpose, using it to heat a pool for 8+ hours a day. I have been extremely impressed with its performance and durability. If used as intended, I believe it has the potential to last a lifetime. Despite my heavy usage, it has not shown any signs of wear and tear. Even if it were to stop working tomorrow, I still feel like I have gotten my money's worth. In fact, my cousin purchased one as well and is using it for the same purpose, and he is equally satisfied.

I have also found this product to be excellent for outdoor showers. We have been using it daily for two months, connected only to a garden hose, and it has worked flawlessly. The propane consumption is minimal, and a standard 5-gallon tank lasts for several months. To protect it from rain or shower spray, we have mounted the water heater outside the shower but under cover. We also purchased a second shower wand hose and a coupler to easily reach inside the shower. Adjusting the temperature is simple with the knob on the front, and we have gradually increased it as the weather has gotten cooler.

We were specifically looking for a hot water heater that could handle multiple faucets running simultaneously, and this product has exceeded our expectations. My wife can run the sink while I am taking a shower, and we never run out of hot water. Despite some concerns mentioned in the comments, we have had no issues even during long showers that last 30 minutes to an hour. It's all about finding the right pressure and temperature adjustments, although we do not recommend cranking it up all the way as it can get very hot. It also performs well even in rainy weather. I would highly recommend this product for tiny houses or regular houses.

I purchased this product to have hot water at campsites for my family, and it has worked exceptionally well. It was easy to set up and has been great for doing dishes with hot water. We were even able to set up a tent and have outdoor showers, which was a fantastic experience. I also plan to use it for giving our dog baths outside. Compared to similar units from other brands, this product is reasonably priced. Additionally, it comes with all the necessary connectors and hardware, which is not always the case with other products. Overall, I highly recommend this product for anyone in need of a reliable and convenient hot water solution.

The Eco-friendly and off-grid design of our dream tiny home led us to search for the perfect shower solution, and we found it in this amazing product. One of the standout features is the shower hose attachment, which adds convenience to our daily routine. However, what truly impressed us is the speed at which the hot water is delivered. With no wait time, we can enjoy a hot shower right away. Additionally, the no leak design of the propane gas hose connector gives us peace of mind.

Setting up and using this instant hot water heater is incredibly simple, even for someone like me who had never worked with propane before. I was initially apprehensive about doing it myself, but it turned out to be much easier than anticipated. I can't believe I didn't discover this earlier. Now, I have the luxury of a hot shower whenever I want.

This product proved to be a lifesaver for me when my RV was stripped, including the hot water heater. I decided to give this instant hot water heater a try, and it exceeded all my expectations. It outperforms the traditional hot water tank that comes with RVs or trailers. I no longer have to worry about running out of hot water, as I can shower until I run out of water. Even if multiple people in the trailer want to shower or if I have guests, I can still enjoy plenty of hot water as long as I have propane. It truly is worth its weight in gold.

Not only is this product suitable for RVs, trailers, and motor homes, but it is also perfect for anyone who needs a reliable hot water solution. The fear of running out of hot water is eliminated with this instant hot water heater. Its affordability and lightweight design make it a must-have for outdoor enthusiasts, camping trips, and even for bathing outdoor animals. My horse, who used to dread cold hose baths, now enjoys warm baths and even dozes off during the process. It has made my life so much easier, and I highly recommend it.

In terms of improvement, the instructions could be more detailed, especially when it comes to retrofitting a hose for the cold water intake. However, with a bit of effort, it is manageable. Overall, this product is a great buy, offering convenience, efficiency, and affordability.

I recently purchased this hot water heater for our off-grid cabin and it has exceeded our expectations. Within 5-10 seconds, we have hot water, which is perfect for our needs. The customer service was exceptional as well. When the igniter stopped working, they quickly responded and replaced the unit without any hassle. We are extremely satisfied with both the product and the service.

In our warm climate, we have an outdoor shower stall and have been relying on solar for hot water. However, as the temperature started to drop, we decided to invest in this water heater to see if we could continue showering outside during the cooler months. And let me tell you, it has been a game-changer. The water heats up rapidly, allowing us to enjoy warm showers even in colder weather. We did have to purchase a different connector, as suggested in one of the attached videos, to make the unit more user-friendly. Overall, this has become our favorite "toy" as it was easy to set up and provides a great shower experience with a good spray.

It's worth mentioning that this water heater has been working flawlessly for the past two years. I have two units in daily use, and they have been reliable and efficient. I even added a gas valve to one of them to allow for a cold rinse, catering to my son's preferences.

To make it winter-proof, I have implemented a few modifications. First, I insulated the cold water supply line up to a convenient shut-off valve. Then, I added a tee to the shower and installed a small valve that stays partially open during winter to allow water to drain from the line backward from the heater when the main supply valve is shut off. I also drilled a small hole at the lowest point of the hose that feeds the showerhead to ensure proper drainage. Lastly, I leave the brass knurled valve that drains the heat exchanger open enough to fully drain the unit when the supply valve is shut off. These steps have successfully allowed me to use this water heater in my outdoor shower even during winter, providing a nice and steamy shower experience.

I recently purchased a portable hot water heater from Amazon, and I must say, I am extremely impressed with its performance. Despite my usual hesitation to leave reviews, I felt compelled to share my thoughts on this particular product.

First and foremost, I appreciate the fact that this hot water heater was designed and production managed in Charleston, South Carolina, even though it is assembled in China. This combination of American design and Chinese manufacturing ensures a high standard of quality.

Speaking of quality, it is evident from the moment you remove the product from its packaging. The heater feels sturdy and well-crafted, providing reassurance that it will stand the test of time.

One of the standout features of this portable hot water heater is its versatility. It comes with a wide range of fittings, allowing for easy installation with various water supply connections. I was particularly impressed with how quickly the heater fired up once the water supply was opened.

Another notable aspect is its ability to function even under low water pressure. According to the provided manual, this unit can operate effectively at a pressure as low as 20psi, making it suitable for gravity-fed water systems or situations with limited water pressure.

Furthermore, this hot water heater is significantly smaller and lighter than other portable propane heaters on the market. Its compact size does not compromise its performance in any way, making it a must-buy for those in need of a portable hot water solution.

Installation was a breeze, and I found it to be simple and straightforward. Despite the manufacturer's recommendation against tying it into the grid, I decided to do so and have had no issues. I installed water cutoff valves and a hose splitter, allowing me to use both hot and cold water as normal while also providing a safety measure in case of emergencies.

To save time and effort, I kept my old water heater in place and mounted the portable hot water heater directly over it, utilizing the existing heat shield. This not only ensured safety but also allowed for easy removal of the unit if necessary. The convenience and functionality of this setup are unrivaled.

I should also mention that this hot water heater is powered by two D-size batteries, eliminating the need for complicated wiring. It provides endless hot water throughout the entire home, including the kitchen sink, bathroom sink, and bath/shower. In terms of performance, it competes with systems that cost thousands of dollars, all for a fraction of the price.

If you're on a budget, I cannot recommend this portable hot water heater enough. Say goodbye to bulky, expensive, and leaky tank systems. This unit will save you time, money, and energy, while providing an endless supply of hot water. Don't miss out on this incredible opportunity to upgrade your hot water system and enjoy the benefits of convenience and savings.