RV Tankless Water Heater Pros And Cons

Do you want to experience the convenience of continuous hot water in your RV? The answer may be a tankless RV water heater. Tankless models can offer significant energy savings and are built to last, making them an attractive option for those who enjoy life on the road.

Read on to learn about the pros and cons of these efficient systems, as well as how much they cost. With this comprehensive guide, you’ll be able to make an informed decision on whether a tankless RV water heater is right for you!

RV Tankless Water Heater Pros And Cons

What is a Tankless RV Water Heater?

Tankless water heater units for RVs provide a more convenient and energy-efficient way to make sure hot water is always available. Unlike traditional storage-tank water heater units, the tankless type warms up the water in real time. This ensures you don’t have to wait for the tank to refill or receive its heated contents, but that hot water can be provided continuously while necessary.

Tankless RV water heaters also require less energy than traditional tanked water heaters, making them more cost-effective in the long run. Additionally, these units provide hot water faster than standard electric or gas models, so you don’t have to wait for the flow of hot water to reach your faucet.

With all these advantages, it’s no wonder that tankless RV Water Heaters are becoming increasingly popular with travelers looking for an easy and reliable way to get hot water on their trips.

How Do RV Tankless Water Heaters Work?

RV tankless water heaters are perfect for those who want to enjoy hot water without having to fill a large tank. They work by heating the water as you need it, meaning you never have to worry about running out of hot water again. When the water tap is turned on, a heat exchange process is activated.

Heat exchangers transfer heat from one object to another and they generate enough heat to reach a preset temperature through either electric coils or a gas-fired burner. This heated air is then transferred to the water as it passes through.

The benefit of RV tankless water heaters is that they eliminate recovery time, meaning you get an endless supply of hot water with no wait time between uses. Also, because there is no tank of stagnant water sitting around, these units use less energy and are more efficient than standard electric or gas-fired models.

With gallons per minute ratings ranging from 2-8 GPM depending on the model, you can be sure that your RV tankless unit will provide enough hot water for any situation – from washing dishes and showering at the same time to filling up your city’s hot tub!

Tankless Water Heaters for RVs Considerations

Tankless water heaters are becoming increasingly popular for RV owners, and it’s easy to see why. These efficient systems offer an array of benefits that traditional tanked water heaters simply cannot match. Tankless units are powered by electricity and provide an endless supply of hot water with no need for a tank full of water to store it in.

This means that you can enjoy hot showers or do the dishes without worrying about running out of hot water. The high flow rate also means that you get much faster hot water than with standard tanked systems, meaning there’s no more waiting around for your shower to warm up.

Tankless units also require less space since they don’t have a bulky tank taking up room, which is ideal for RVs where space is at a premium. And if you use your RV frequently or live in it full time, then the savings on electric bills can more than pay for the cost of the unit over a few years.

So if you’re looking to upgrade your RV with an efficient system that takes up minimal space while providing endless hot water, then tankless water heaters should be at the top of your list!

Why Go Tankless?

Are you tired of running out of hot water when taking a shower? Do you want to save money on your energy bills while also reducing your carbon footprint? If so, consider investing in a tankless water heater! Tankless water heaters have had a surge in popularity over the last decade or so due to their many advantages.

Tankless water heaters are an excellent choice for providing continuous hot water. As opposed to traditional full-tank water heaters, tankless heaters capture and store only what is needed at any given time. This means that you don’t have to worry about running out of hot water during peak times. Additionally, tankless water heaters can provide up to three gallons per minute which are more than enough for most households.

Another benefit of tankless water heaters is their improved energy efficiency. Traditional full-tank models need to keep a tank filled with heated water all day long, even if no one is using it – this wastes energy and results in higher electricity bills. On the other hand, tankless models only use energy when someone turns on the faucet and uses hot water. This can help reduce your electricity bill by as much as 40%.

Last but not least, they are built to last longer than standard tanks – up to 20 years compared to 10-15 years for traditional versions! Investing in a tankless model will help ensure that you get the most value out of your purchase and save money in the long run!

Continuous Hot Water

When it comes to RV living, nothing is more frustrating than having to take quick showers or wait for the water to warm back up after washing dishes. Hot water runs out fast in an RV with a standard water heater, and that’s why so many people are turning to tankless models for their hot water needs. Thanks to the continuous hot water provided by tankless electric water heaters, you’ll never again have to suffer through a cold shower or wait around for your hot water to come back on!

Tankless electric water heaters provide instant hot water without any waiting period. This means that no matter how many times you use the faucet in one day, you can always expect a steady flow of hot water from your taps. Even better, these units require little maintenance and are very efficient when compared to traditional tanked models. Plus, thanks to their compact size, tankless electric heaters don’t take up much space and can easily be installed in any RV.

So if you’re looking for a way to get continuous hot water during your RV adventures, look no further than tankless electric heaters! With a reliable source of hot water at all times, you can feel confident that your next shower will never be interrupted by an empty tank!

Energy Savings

When it comes to energy savings, tankless water heaters are the clear winner. Hot water tanks typically maintain a full tank of hot water at all times, using up considerable energy.

On the other hand, tankless water heaters don’t need to work as hard since they only heat up when someone turns on a faucet and the water is running through the heater. With their near-instant and continuous hot water supply, these tankless units can reduce your energy consumption significantly.

Plus, no matter which type of tankless heater you choose – gas or electric – you’ll be able to enjoy consistent, reliable hot water with minimal energy waste. So if you’re looking for an efficient way to warm up your RV without spending too much on energy bills, consider investing in a tankless water heater today!

Built to Last Technology

Tankless water heaters are a great option for RV owners looking to upgrade their hot water systems. With traditional water heaters lasting only 10 to 15 years, tankless water heaters can last up to twice as long – 20 years! This is because tankless heaters provide an unlimited flow of hot water regardless of the size or demand of the RV.

The recovery time for a tankless water heater is also much faster than that of a standard water heater. They offer fast hot water with no waiting and no cold showers. And because they don’t need to store gallons of water in a tank, they take up much less space, making them perfect for small RVs.

In addition, most tankless systems use electricity instead of propane which leads to cost savings in both installation costs and energy bills. Finally, these systems are designed with safety in mind, making them ideal for RV owners who want peace of mind while on the road.

All things considered, investing in a tankless system will not only save you money but also give you peace of mind knowing that you have built-to-last technology providing endless hot showers throughout your travels!

Lower Cost of Ownership

Tankless water heaters for RVs provide a cost-effective way to enjoy hot showers and other hot water applications when traveling. With the lower energy consumption of tankless units, you can save money on your annual operating costs. In addition, these units tend to last longer than traditional tank water heaters, which means even more savings in the long run.

Finally, the cost of going tankless can be comparable (or lower) to traditional water heater tanks, so it’s worth considering if you’re looking for an economical option for your RV hot water needs.

With all these benefits, it’s clear that tankless water heaters offer a lower cost of ownership and are an ideal choice for those who want to enjoy all the comforts of home while on the road.

Drawbacks of Tankless Water Heaters for RVs

One of the biggest advantages of tankless water heaters for RVs is that they offer an unlimited supply of hot water. However, there are some drawbacks to consider before you make the switch.

First and foremost, tankless water heaters for RVs are significantly more expensive than traditional or standard water heaters. This can make them prohibitively expensive for many people who might otherwise benefit from their features.

The output of tankless heaters is also much lower than that of a standard heater. This means that if you’re looking to get a large amount of hot water quickly, it may take longer to do so with a tankless heater than with a traditional one.

Finally, installing a tankless RV water heater can be quite complicated and require professional help which adds to the overall cost as well as the time needed to get it set up correctly.

For all these reasons, tankless water heaters for RVs should be carefully considered before being purchased and installed in order to ensure that they will provide the benefits desired without creating too much extra hassle or expense.

Low Flow Rate of Water

Tankless water heaters offer a great solution for those looking to save money on their energy bills and reduce their carbon footprint. However, one of the drawbacks of these units is their relatively low flow rate of water.

Tankless heaters are designed to handle a certain amount of water flowing through them, so if too much is pushed through it can cause damage to the unit or not provide enough hot water. To ensure you have enough capacity for your needs, think about how many faucets you would like to be able to run at once and use that as your guide.

For example, a single sink may only need 1 gallon per minute (GPM) while a shower could require closer to 2 GPM. It’s important to remember that if you go over this limit then your tankless heater will not be able to keep up and you won’t get the hot water you were expecting.

By being mindful of the flow rate required by your tankless heater, you can get maximum efficiency from these devices and benefit from all the advantages they offer.

The Cost of Tankless Water Heaters for RVs

The cost of tankless water heaters for RVs can vary greatly depending on the capacity and flow rate that you need. On the low end, you can find units at around $100-$200 that are designed to handle just one pipe (faucet) at a time and provide 1-1.5 gallons per minute.

These units are available from retailers like Walmart and Home Depot/Lowe’s and may be sufficient if you’re not looking to spend a lot of money to get hot water again. If you need more hot water than that, then you’ll have to look into higher capacity models which can range up to several hundred dollars or even more.

However, no matter what your budget may be, tankless water heaters for RVs are a great way to quickly and easily get hot water again without having to install a traditional tanked heater in your RV.

Complicated Installation

Installing a tankless water heater in an RV can be much more complicated than simply plugging it in and hooking up the electricity or propane. In fact, some people may find the process intimidating and costly.

As RVs are not designed to accommodate tankless heaters, you will need to take care of putting in the system yourself, routing the water around the old hot water tank and into the tankless heater. You also need to hook up electricity or propane.

This is not an easy task and could require professional help, which would result in added installation costs beyond just buying the unit itself.

However, if you are willing to do the work yourself and save on installation costs, a tankless water heater may provide many benefits for your RV such as unlimited hot water and improved energy efficiency.

The Final Verdict on Tankless Water Heaters for RVs

The final verdict on tankless water heaters for RVs is that they are generally a great investment. For those who live in their RVs full time, the savings can be substantial due to the fact that tankless units save energy by only heating water when it is needed.

Additionally, the recovery time of a tankless unit is much faster than that of a traditional water heater, meaning you will never run out of hot water again! Furthermore, depending on your RV’s setup, installation may be an easy DIY project.

Finally, when considering whether to invest in this type of water heater for your RV, think about how you use your vehicle and what kind of benefits you would get from switching to a tankless unit. With all the pros and cons taken into account, we feel confident recommending investing in a tankless water heater for your RV—it’s just too good an opportunity to pass up!

How Much Do RV Tankless Water Heaters Cost?

RV tankless water heaters can be a great way to save money and space in your RV. With an initial investment of around $400 to $1,000, you’ll get all the benefits of hot water on demand without the need for a bulky storage tank. And if you’re comfortable with DIY projects, installation is fairly easy and shouldn’t require additional labor costs.

The exact cost will depend on the size and capacity of the heater you choose, as well as any additional pieces like access doors that may be necessary. The good news is that these pieces are usually quite affordable, costing between $30 -$40 each. Most RV tankless heaters run on propane but can easily switch to electric if needed.

Tankless water heaters are a great way to stay warm and conserve space in an RV. With an upfront investment of around $400-$1,000 plus any extra accessories, you can enjoy hot water on demand without needing a large storage tank or dealing with complex installation projects.

Is it Easy to Replace an RV Water Heater With a Tankless?

Replacing an RV water heater with tankless technology is not as easy as it may seem. While every model comes with a guide for connecting the necessary electrical and propane lines, there are additional steps that must be taken to properly secure them in place.

Most RV tankless water heaters are smaller than their tanked counterparts, so you will need to add wood or aluminum support braces to make sure they are installed correctly. Furthermore, many models don’t come with an exterior door, which can cause further installation difficulties.

To complicate matters even more, there is no such thing as standard parts in the RV world. Therefore, it’s important to research all aspects of replacing your existing RV water heater before investing in a tankless version.


Are instant RV water heaters more expensive?

Are you looking to upgrade your RV’s water heater? If so, you may be wondering if tankless water heaters are worth the extra money. The short answer is yes – tankless water heaters are more expensive than traditional models, but they come with a number of benefits that could make them worth the investment.

Tankless water heaters have a longer life span, take up less space and offer faster recovery times and higher flow rates. Electric tankless water heaters are more energy efficient. The upfront cost may seem daunting, but they are worth it in the long run. Invest in a quality tankless system to reap all of these benefits.

Do tankless water heaters need to be maintained?

All RV water heaters need to be winterized, and even tankless units can suffer from calcification from hard water. You’ll need decalcification tablets or other products to cleanse your tankless heater from the inside out in order to ensure it’s working properly and efficiently.

Check the flow of hot water regularly. Make sure the temperature is where you want it. Do regular maintenance on the tankless unit. Invest in a few supplies to save repair costs.

Can on-demand RV water heaters be operated in the winter?

RV tankless water heaters are a great way to get hot water on demand without taking up valuable space in your RV. But can they be operated in the winter? The answer is yes, but with a few caveats.

RV tankless water heaters are vulnerable to freezing temperatures below 40 degrees Fahrenheit. Should be located in a warm place and running before temperatures drop. Major benefits include saving storage space, providing hot water on-demand, and being more energy efficient. Requires more maintenance during cold weather but the advantages outweigh the downsides. Investing in an on-demand RV tankless heater will give you hot showers year-round.

Can You Convert a Standard Water Heater to a Tankless System?

It is possible to switch from a standard water heater to a tankless system. Tankless heaters are more energy efficient than traditional heaters, saving homeowners money in the long run. Moreover, they provide an endless supply of hot water with lightning-fast recovery times and are much more compact than standard models, freeing up valuable space within the RV.

Pay attention to the dimensions of the tankless heater. Check that all vents and propane/water connections fit. The tankless system is energy-efficient and provides unlimited hot water with minimal space needs. Saves money and energy costs.

Is a Tankless Heater Difficult to Install?

Is a tankless heater difficult to install? The short answer is no. In fact, if you are confident with some mechanical and electrical operations, the process can be quite straightforward. All that is needed is to remove the old heater and replace it with the new system. However, it is important to take your time in order to ensure safety and proper installation.

Isolate all electrical, propane, and water supplies. Keep a reference of things disconnected. The area must be cleaned before installation. Hire a professional for installation if needed. Follow safety procedures for tankless heater installation.

What size RV tankless water heater do you need?

RV tankless water heaters are a great way to have hot water on the go, especially when you’re out in the wilderness. They provide an endless supply of hot water and save on energy costs. But what size RV tankless water heater do you need? It all depends on how many people will be using it and their showering habits.

50-60 gallons for 3 people, 60-70 for 4, and 75-80 for 5+ people. Look for one that is big enough but not too big to maintain energy efficiency. Consider adjustable temperature control, automatic shut off, and other features before purchase.


Tankless water heaters can be beneficial for recreational vehicles. They offer several advantages over traditional water heaters, such as a faster recovery time and the ability to provide hot water on demand. Additionally, they require much less space than standard tanked models, making them ideal for small spaces like RVs. Furthermore, many electric tankless models can be powered by city water or propane gas.

The only downside of using a tankless model is the cost; these units tend to be more expensive than traditional tanks. However, their long-term energy savings may make up for this initial expense over time. Furthermore, tankless models usually have a longer lifespan than traditional water heaters and require less maintenance too.

All in all, RV owners should carefully consider their needs before deciding which type of water heater is best for them. Tankless units may not be suitable for everyone’s budget or RV setup, but they offer a host of benefits that can improve the efficiency and comfort of your RV experience.