I Tested And Reviewed 7 Best Electric Water Heater For Rv (2023)

The 4-gallon mini-tank heater is an excellent addition to any kitchen. With a total cost of around $325.00, it provides instant hot water and helps save energy and water consumption. The installation process may require some additional expenses, especially if the tank doesn't fit under the sink. In such cases, moving it to a nearby cabinet may be necessary, which can incur costs for hoses, connectors, and an extension cord.

One advantage of this mini-tank heater is that it allows you to run only cold water into the sink, ensuring that using hot water doesn't affect your gas water heater. However, it's important to note that there is a possibility of running out of hot water at the sink if too much is used at once. To address this, the temperature can be adjusted to prevent any shortage for personal needs.

The mini-tank heater significantly reduces the waiting time for hot water, especially in situations where the sink is located far from the main water heater. In the reviewer's case, the distance of 30 feet (40 feet including piping) resulted in a 30-second wait time, which was resolved with the installation of the mini-tank heater. Now, hot water is almost instantaneously available, taking only one second. The installation process itself is relatively easy and can be completed without the need for a plumber or electrician.

While demand water heaters may seem like an alternative, they come with a higher price tag. In addition to the cost of the unit itself, a new dedicated electrical line with a breaker would be required, resulting in expenses of around $1500 or more for professional installation. Retrofitting a demand water heater is even more costly and usually only makes sense when replacing the main water heater. In the reviewer's case, they still found value in having the mini-tank heater due to the distance issue.

For those considering this mini-tank heater for standard under-the-sink installation, several additional items are needed. These include 2 ½" NPT to 3/8" compression hoses (2 feet long), a 3/8" compression tee, a 3/8" female to female connector (with male ends), and an aluminum water heater pan. These components are used to connect the 2-foot long 3/8" hose to the hot water hose for the sink tap.

In the reviewer's installation, they opted for different components due to their specific kitchen layout. This included 2 ½" NPT to 3/8" compression hoses (1 foot long), 3/8" dishwasher supply hoses (6 feet long), additional 3/8" female to female connectors, a 3/8" compression tee, a 12-gauge extension cord (8 feet long), and an aluminum water heater pan. These modifications were necessary to accommodate the distance and ensure proper connection.

Depending on the kitchen setup, it may be advisable to plumb a PVC pipe into the over-pressure valve and direct it towards a floor drain or outside. This is particularly relevant for kitchens with waterproof tile floors, as any potential overflow can be easily mopped up.

During the installation process, it is recommended to have a good flashlight or headlamp and a couple of adjustable spanners (small crescent wrenches) on hand. These tools will assist with the proper connection and adjustment of components.

It's worth noting that the 7-gallon version of this mini-tank heater may require an electrician for installation. However, it does not necessitate a new or dedicated circuit, as it still only draws 12 amps. If comfortable with electrical work, connecting the electrical line to the existing box should be manageable. It's important to consider possible additional costs for connectors or a larger electrical box. Some municipalities may also require a permit and inspection for this type of installation, as it involves adding an electrical circuit. While the 7-gallon version offers greater capacity, it takes longer to heat and requires more space.

The small 2-gallon water heater I purchased has been a great addition to my kitchen sink. With the water heater located in my basement, which is 50 ft away from the kitchen sink, I used to waste a significant amount of water waiting for hot water to arrive at the faucet. This resulted in approximately 150 gallons of water wasted every month. However, by connecting the hot water line to the "cold" inlet of the heater and reheating it, I now have instant hot water at my kitchen sink. It has been a great appliance that has effectively solved the issue of waiting for hot water.

One drawback I encountered was that the unit was slightly too deep to fit behind the existing drain plumbing, which required me to use more under sink storage space than I initially wanted. Additionally, the water heater does not display the water temperature, so I have to manually adjust it until it reaches a comfortable temperature. It is important to note that it can get hot enough to scald, so caution should be exercised. Despite this, the water heater is not designed for shower use but rather for under the sink, dishwashing, and other similar applications.

Installation was relatively simple, and I am pleased with the overall performance of the water heater. It quickly heats up after emptying the initial two gallons of water it holds. Although I initially intended to install a larger tank, it unfortunately did not fit under my sink. However, I am highly satisfied with the instantaneous hot water it provides for handwashing and cleaning tasks.

I recently purchased the 2.5 gallon water heater and it has solved a major issue in my household. Previously, we had to wait a significant amount of time for hot water to reach our kitchen, resulting in us often washing our hands and dishes with cold water. However, this compact water heater has proven to be a game changer.

One of the main reasons I chose this particular water heater is because it takes up very little space. Our under-sink cabinet was already filled with various items, so a larger water heater would not have fit. The installation process was incredibly simple, and I appreciate that the seller provided all the necessary accessories. I just had to connect the hose from the kitchen to the cold water input of the water heater, and then connect the hot water output to a small metal tool that diverts the flow between the kitchen sink and dishwasher. This allows us to use hot water simultaneously in both areas.

I was pleasantly surprised to find that all the required accessories were included, eliminating the need for an additional trip to the hardware store or hiring a professional for installation. Once everything was set up, I set the thermostat to its highest temperature and now only need to adjust the water temperature through the tap. The wait time for hot water has significantly decreased, and I usually just need to turn the tap to the middle position to get hot water without any delay (the highest temperature is 167 ℉). A friend recommended this water heater to me, mentioning its stainless steel structure, ensuring durability and longevity.

It is important to note that this water heater is not suitable for bathing due to its limited water capacity. If you require hot water for bathing, I would recommend investing in a larger water heater.

I am extremely satisfied with this product, not only for its functionality but also for the excellent service provided. As winter approached, my wife was constantly complaining about the lack of hot water. However, this small water heater for dishwashing has resolved the issue. During the installation process, I made a mistake by forgetting to turn on the water while running the water heater. When I noticed a strange smell, I quickly realized my error. I contacted the customer service team using the provided contact details on the package, and they promptly responded with a solution. They informed me that the water heater has a protection mechanism, and all I had to do was open the gray cover and press the white button to restart it. Thanks to their patient and prompt assistance, the hot water is now working flawlessly.

I recently installed this product under my kitchen sink and I couldn't be happier with the results. Our water heater is quite far from the kitchen, causing us to waste gallons of water waiting for it to warm up. However, with it, this problem has been completely eliminated.

The installation process was relatively straightforward, although I did require the assistance of a plumber due to the specific fittings needed for my kitchen plumbing. The unit delivers instant hot water with the ability to adjust the temperature using a simple twist dial. With a tank capacity of over a gallon, it provides enough on-demand hot water for most quick needs.

One of the key advantages of this unit is its efficiency. It heats water from cold to hot in a very short time, ensuring that we no longer have to wait for hot water to reach the faucet. This has made a significant difference in our daily routine and my wife is absolutely thrilled with the results.

In terms of space requirements, it is important to have enough room under the sink to mount the unit. Before installation, make sure to measure the available space accurately. Additionally, you will need an electrical outlet under the sink to plug in the unit. Fortunately, I already had an extra outlet, so this was not an issue for me.

I am highly satisfied with this small on-demand hot water tank for my kitchen faucet. It has effectively solved the problem of waiting for hot water and has improved the efficiency of our kitchen routine. It's worth noting that the unit will run out of hot water eventually, but for quick needs, it is more than sufficient.

I should also mention that the customer service and support provided by the manufacturer were excellent. They were responsive to my inquiries and provided clear instructions for installation and maintenance.

I recently purchased this water heater for my fifth wheel and I must say, it has exceeded my expectations. The compact size of the unit is perfect for my RV and it provides more than enough hot water throughout the entire vehicle. However, there was a slight issue with the fittings leaking when I initially used thread tape. Thankfully, I found that using a thread sealant solved the problem and there were no more leaks.

The performance of the water heater is exactly as advertised. It efficiently heats the water and eliminates the need to waste gallons of water while waiting for hot water to reach the kitchen sink. The only challenge I encountered was with the connections. I had to search for a suitable "splitter" at a plumbing wholesaler to allow hot water to flow to both the kitchen faucet and the dishwasher. Unfortunately, I couldn't find one with a shut-off valve. Despite this minor inconvenience, I am pleased with the overall functionality of the water heater.

During the installation process, I connected the unit to the water supply, filled the tank, and turned on the power. To my delight, it worked flawlessly. Now, I no longer have to wait for two minutes to get hot water at my kitchen sink. I would rate this product five stars overall. I deducted one star for tech support, but that's because I never needed to contact them. I would also give it four stars for ease of installation, as the unit is quite large and heavy when filled with water. It is crucial to ensure proper support for the water heater.

The water heater performs exactly as expected, delivering hot water within seconds of turning on the tap. Installation was straightforward for someone with basic plumbing experience. However, I found that the pre-applied coating on the relief valve threads was not sufficient and additional pipe dope and/or Teflon tape were necessary.

I was pleasantly surprised by the high quality of this water heater. It heats up quickly, allowing my wife to take a shower and dry off before it's even time for me to take mine. The quick recovery time is impressive, and I would definitely purchase another one if this unit ever stops working. Additionally, the small size of the water heater made it a breeze to replace the original one in my RV. It fit perfectly in the cabinet and the water lines connected effortlessly. I didn't even need to remove the old unit; it simply sat next to it. I am extremely satisfied with this product.

The Bosch Tronic 7-Gallon (ES8) Electric Point of Use Water Heater is a fantastic choice for anyone looking to replace their propane water heater with an electric one in their RV. With its 7 gallon capacity and quick heat-up time, it provides plenty of hot water for showers.

One thing to note is that the manufacturer puts putty on the threads of the pressure release valve, which may initially raise concerns about its condition. However, it is important to know that this is a normal practice and not a sign of previous use. In the case mentioned, the reviewer had it replaced unnecessarily. Other than that, the unit was in pristine condition.

Installation of the water heater is relatively easy, especially with the help of a friend who used to be a plumber. The reviewer used 3/4" elbows from the hot and cold valves connected to 1/2" braided tubing, which was then attached to their PEX flexible tubing. They also purchased a small garden hose and attachment from Ace Hardware to fit the pressure release valve, ensuring any water that flows from the valve goes outside to prevent leaking. It is worth noting that the installation location may vary depending on the size of the unit, as the 7-gallon heater is quite large and may not fit in bathrooms or kitchens. In this case, the reviewer installed it in their basement crawlspace, taking precautions to provide a firm foundation.

Electricity hookup may require the assistance of an electrician to make a hard-wired 12A and 120V connection. This additional step ensures a safe and secure electrical connection for the water heater.

The Bosch Tronic 7-Gallon (ES8) Electric Point of Use Water Heater has proven to be a great investment for the reviewer. The quick heat-up time and 7-gallon capacity provide ample hot water, and they no longer deplete the reserve before their main hot water heater kicks in. The reviewer is overall satisfied with the performance of this water heater.

It's important to keep in mind the size and weight limitations of the 7-gallon unit. The dimensions are 17.5 W x 17.5 H x 14.5 D, and the unit itself weighs around 30 pounds, making the total weight with water nearly 90 pounds. This should be considered when determining the installation location and ensuring a stable foundation.

I recently purchased the water heater and I am extremely satisfied with its performance. The installation process was a breeze as all the necessary parts were included. Simply connecting the water tube was all it took to get it up and running. I placed the unit under my sink and it fit perfectly.

One of the standout features of this water heater is its fast hot water delivery. I no longer have to wait for the water to heat up when washing my hands. It provides hot water almost instantly, saving me both time and water. The cable is also durable and provides a good level of safety.

I was initially concerned about whether this water heater would be able to meet the needs of my large family. However, I was pleasantly surprised to find that it had more than enough hot water for our daily use. It easily handles the load of washing dishes without any issues.

The installation process was simple and straightforward, allowing me to do it myself without any hassle. The unit also came with spare accessories, eliminating the need for separate purchases and saving me money.

Although the space under my sink is limited, I was still able to make it work by placing the water heater on its side. While this may have affected its aesthetic appeal slightly, it did not impact its functionality. I connected the hot water end to my dishwasher using a dishwasher hose, creating a perfect match without sacrificing beauty.

The pure white color of the water heater is aesthetically pleasing and easy to clean. As someone who values cleanliness, this color choice is perfect for me. Additionally, I appreciate the temperature display feature, as it allows me to easily monitor and adjust the water temperature as needed. The heating interval of approximately 5 minutes ensures that there is always a sufficient amount of hot water available.

Another notable feature of this water heater is its stainless steel liner, which enhances its durability and prolongs its lifespan.

Additionally, I would also like to mention that I purchased this water heater for my mobile pet grooming van and it has exceeded my expectations. It works flawlessly and my dogs and I couldn't be happier with this purchase. I highly recommend it for anyone in need of a reliable and efficient water heater for their mobile grooming business.