The 5 Best Tankless RV Water Heaters [2021 Reviews]

These Tankless Water Heaters Can Be Installed In Your RV Or Used Outdoors At Your Campsite

Our Editors independently research, test, and rate what we feel are the best products. We use affiliate links and may receive a small commission on purchases.

If this is your first time purchasing a tankless RV water heater, you’re likely to have a lot of good questions. Our buyer’s guide, How to Pick Your Tankless RV Water Heater, will equip you on how to pick the best tankless RV water heater for your needs. And our FAQs will put you on the right track towards becoming an informed buyer.

Best Tankless RV Water Heaters

 PrecisionTemp RV-550 Tankless Water Heater - Wall VentedGirard Products 1GWHAF Tankless Water HeaterEZ Tankless EZ-202 Portable Tankless Propane Water Heater
editors choice

ElectricityRequires 1.5-3.0 amps of electricity
Requires 3 amps of electricity
Battery powered – 2 “D” cells
Weight32 lbs.
22 lbs.
15 lbs.
Special Features
Self-adjusting gas usage, 55,000 BTU heat output

Dual BTU burners, at 34,000 BTUs and 27,000 BTUs respectively
84,000 BTU output, Includes showerhead and hose

Customer Ratings
4.0 / 5.0 Stars3,2 / 5.0 Stars4.7 / 5.0 Stars

Also see: Best Tankless RV Water Heaters Comparison Table

Quick Answer: The 5 Best-Rated Tankless RV Water Heaters

  1. PrecisionTemp RV-550 Tankless Water Heater – Wall Vented
  2. Girard Products 1GWHAF Tankless Water Heater
  3. EZ Tankless EZ-202 Portable Tankless Propane Water Heater
  4. Gasland BS264 2.64GPM 10L Tankless Portable Water Heater
  5. Camplux 10L Outdoor 2.64 GPM Portable Propane Gas Tankless Water Heater

Best RV Tankless Water Heaters Reviews

#1 – PrecisionTemp RV-550 RV Tankless Water Heater

PrecisionTemp RV-550 Tankless Water Heater At A Glance:

  • Produces 15-20% more hot water compared to a conventional RV water heater
  • Self-adjusting gas usage
  • Requires 1.5-3.0 amps of electricity
  • Built-in freeze protection
  • 55,000 BTU heat output
  • 32 lbs.
  • Designed and assembled in the USA
The PrecisionTemp RV-550 Tankless Water Heater is regarded as one of the best rv tankless water heaters available on the market today, earning it the #1 spot on our list.

This model is easy-to-manage and resource efficient, making it an asset to any RV owner who wants more out of their RV water heater.

Not only will you have plenty of hot water with this model, but it won’t force you to drive into town for more propane every time you want to use it.

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The PrecisionTemp RV-550’s fuel efficiency is one of its greatest assets, by far. At peak performance, this model is capable of converting only 20 pounds of propane fuel into nearly 940 gallons of hot water.

That’s plenty of relaxing showers for you and your friends, even if you camp frequently throughout the year. Much of this exceptional efficiency derives from its self-adjusting gas usage, which constantly checks to maximize propane fuel use even while you shower.

While you’re in town, you won’t need to buy expensive large-cell batteries for this RV electric water heater either. The PrecisionTemp RV-550 only requires 1.5 amps of electricity to function under regular conditions.

For added safety, the PrecisionTemp RV-550 does not use a pilot light. This comes in handy during the cold winter months, when some other tankless water heaters freeze up and function poorly.

The PrecisionTemp RV-550 features built-in freeze protection that uses its electric connections to continuously preserve regular functionality, even in adverse conditions.

At 55,000 BTUs of sustained heating capability, you can be sure that the hot water from the PrecisionTemp RV-550 will be reliable and consistent even after several uses.

While other RV instant hot water heaters will claim to feature higher BTU outputs, only this model pairs such high-level heating outputs with a 1.5 GPM flow for an excellent bathing experience.

Overall, the PrecisionTemp RV-550 in an excellent tankless water heater that would make a great addition to any RV, mobile home, or tiny house.

While this model does come with a high price tag, such a cost will easily pay for itself between the fuel efficiency savings and the generally exceptional hot water output. The PrecisionTemp RV-550 remains one of the best RV water heaters available today.

#2 – Girard Products 1GWHAF RV Tankless Water Heater

Girard Products 1GWHAF Tankless Water Heater At A Glance:

  • Dual BTU burners, at 34,000 BTUs and 27,000 BTUs respectively
  • Consistent 98-103° F output (maximum 125° F)
  • Requires 3 amps of electricity
  • Easy to install with existing hot water tank
  • Simple temperature settings
  • Can be used with a variety of fresh water sources
  • 22 lbs.
Another excellent option that will check many boxes for RV owners is the Girard Products 1GWHAF Tankless Water Heater. Easy to the install with an existing 6-gallon hot water tank, this Girard tankless RV water heater provides you and your friends with a supply of hot water ideal for bathing as well as general cleaning.

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The Girard 1GWHAF heats water as it passes through the unit, rather than in a separate chamber or container. As a result, you likely won’t need to add cold water to the mix when you use it for showering.

All you need to do is slightly increase or decrease your shower’s flow rate, allowing the Girard 1GWHAF to adjust its hot water output.

This heating process is led by dual propane burners, running at 34,000 BTUs and 27,000 BTUs respectively. You’ll be able to toggle between these two burners easily, allowing you to adjust the temperature range of your hot water depending on your functional needs.

For most uses, the Girard 1GWHAF’s 98-103° F output range will provide enough variability while remaining comfortable to the touch. If necessary, though, this model can heat water to a maximum of 125° F.

Many Girard 1GWHAF owners hail its easy installation as being one of its chief assets. This can easily be accomplished as a standalone addition or as a supplement to an existing 6 or 10-gallon hot water tank.

Many accomplished this task in about two hours, which represents a considerable decrease in time commitment from other comparable models. Though this model tends to run a bit loudly, you’ll quickly forget about the noise while you enjoy the Girard 1GWHAF’s strong hot water output.

As one of the best tankless water heaters for an RV, the Girard 1GWHAF provides a quality level of hot water output while preserving a moderate upfront price tag.

2Whether you plan to use it as a standard or suburban RV water heater, this model will provide you with the hot water you need to satisfy all cleaning occasions.

#3 – EZ Tankless EZ-202 Portable RV Tankless Propane Water Heater

EZ Tankless EZ-202 Portable Tankless Propane Water Heater At A Glance:

  • Battery powered – 2 “D” cells
  • 20-minute overheat protection
  • Includes showerhead and hose
  • 84,000 BTU output
  • 1-year warranty on parts
  • Wall mountable
  • 15 lbs.
If you’re in the market for a more portable tankless water heater for your RV, the EZ Tankless EZ-202 Portable Tankless Propane Water Heater provides convenient hot water production to meet your outdoor cleaning needs. Between its safety features and high potential heat output, this RV water heater will become a mainstay in your RV’s arsenal.

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To begin with, the EZ-202 doesn’t require a “spark” to ignite – at least, not from a line-in electric hook up. Instead, this model uses two “D” cell batteries to initiate the propane burning process. After that, the batteries remain dormant, allowing the heating process to continue on its own.

The EZ-202 also attaches easily to the exterior of your camper or RV, allowing for outdoor cleaning where you need it most. In just 15 minutes, you can have this entire set up prepped and ready to use. That leaves plenty of time for every camper to take a nice warm shower.

Once ignited, this RV on-demand hot water heater quickly heats water up to 85° F and beyond, allowing you to use it to clean everyone from yourself to your camping gear. With the included showerhead’s gentle spray, you’ll even be able to clean your pets – including dogs – after a long day spent roaming the outdoors.

At a maximum heat output of 84,000 BTUs, the EZ-202 doesn’t skimp on power either, providing you with an ample supply of radiantly toasty water.

The EZ-202 isn’t just convenient, either – it’s also equipped with several unique safety features. One noteworthy safety feature is its 20-minute overheat protection.

Designed to prevent the heat exchanger from overheating, this mechanism kicks in after 20 minutes of use in order to provide the heat exchanger time to rest. However, this mechanism can be easily reset by adjusting the water tap.

One noteworthy drawback on this (and many other) portable models is how difficult it is to drain entirely after use. Though the EZ-202 features a release valve, some EZ-202 owners note that it can be difficult to drain entirely between uses.

This can run the risk of damaging internal components over an extended period of time, especially if this model is left outdoors.

Overall though, the EZ-202 is one of the best portable RV tankless water heaters available. Though new “D” cell batteries can be pricy, the cost is well worth it for the portability this model provides. With a 1-year warranty on all parts and labor, you can be certain that this tankless RV water heater will last through many camping trips to come.

#4 – Gasland BS264 2.64GPM 10L RV Tankless Portable Water Heater

Gasland BS264 2.64GPM 10L Tankless Portable Water Heater At A Glance:

  • 68,000 BTUs
  • No preheating
  • Shutoff protection from flameouts
  • Affordable price
  • Requires 3.6 psi to ignite
  • Includes several hoses and ON/OFF shower head
  • 22 lbs.
While many portable tankless RV water heaters focus on portability, few focus in on rapid production of hot water. The Gasland BS264 2.64GPM 10L Tankless Portable Water Heater is different though as its unique “no preheat” features allow it to quickly and effectively produce a steady stream of hot water.

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One of the Gasland BS264’s key features is its exceptionally fast hot water production. Unlike built-in traditional RV water heaters, the Gasland BS264 doesn’t need time to preheat due to it energy-efficient, compact heating space.

Fueled by 68,000 BTUs of heat output, this model brings 3.2 gallons per minute of hot water to your fingertips just minutes after turning it on.

In addition, the Gasland BS264 provides an extra degree of safety through its built-in safety features. First and foremost, the Gasland BS264 doesn’t use a pilot light, like many other portable RV water heater models.

However, only the Gasland BS264 provides built-in shutoff protection that shields the system from propane gas flare-ups. In the long run, both of these features keep you and your family safe while the appliance is operating.

Like other portable water heaters, the Gasland BS264 is notability difficult to empty after use. While this model can be emptied entirely with a little extra work, some RV owners prefer an easier method for water release such as a purpose-built valve.

Despite this, the Gasland BS264 remains a solid option when shopping for an RV propane water heater. For an instant water heater that both performs well and remains safe through repeated usage, be sure to put the Gasland BS264 on your purchase list.

#5 – Camplux 10L Outdoor 2.64 GPM Portable Propane Gas RV Tankless Water Heater

Camplux 10L Outdoor 2.64 GPM Portable Propane Gas Water Heater At A Glance:

  • Built-in flame failure detection
  • Up to 68,000 BTU
  • Battery powered – 2 “D” cells
  • Eco switch to save fuel in summer
  • Includes showerhead and hose
  • Lowest cost among competitors
  • 18 lbs.
If you’re a price-conscious shopper who is looking for a bargain that doesn’t compromise on performance, the Camplux 10L Outdoor 2.64 GPM Portable Propane Gas Tankless Water Heater will immediately peek your interest. Among the cheapest portable tankless water heaters on the market, this model sure isn’t cheap when it comes to production and construction

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After igniting on only two “D” cell batteries, the Camplux 10L continues to burn with 68,000 BTUs of heat output. Using a standard propane cylinder, this model is able to provide consistent hot water output while also remaining fuel efficient.

One way it is able to do this is with its “eco switch” setting. This allows you to conserve how much fuel is pumped into the system during the warm parts of the year, thus adjusting the temperature of the water produced.

For its low price tag, one might expect the Camplux 10L to be cheaply manufactured. Not the case though, as this portable hot water heater is solidly built to last.

Inside the case, the Camplux 10L features stainless steel burners and a copper heat exchange space, both of which are made to stand up to long-term heat exposure. On the case’s outside, you’ll find several marks of solid craftsmanship, including the easy-to-adjust brass heat and flow rate valves.

All in all, the Camplux 10L is a well-built tankless RV water heater that will provide you with a steady supply of warm water on outing after outing. For the right mix of value, performance, and portability, the Camplux 10L is the go-to choice.

Best Tankless RV Water Heaters Comparison Table

Best Tankless RV Water Heaters  ElectricityWeightSpecial Features
Customer Ratings
PrecisionTemp RV-550 Tankless Water Heater - Wall VentedRequires 1.5-3.0 amps of electricity
32 lbs.
Self-adjusting gas usage, 55,000 BTU heat output
4.0 / 5.0 Stars
Girard Products 1GWHAF Tankless Water HeaterRequires 3 amps of electricity
22 lbs.
Dual BTU burners, at 34,000 BTUs and 27,000 BTUs respectively
3,2 / 5.0 Stars
EZ Tankless EZ-202 Portable Tankless Propane Water Heater
Battery powered – 2 “D” cells
15 lbs.
84,000 BTU output, Includes showerhead and hose
4.7 / 5.0 Stars
Gasland BS264 2.64GPM 10L Tankless Portable Water Heater2 D batteries required.
22 lbs.
68,000 BTUs, Requires 3.6 psi to ignite

4.0 / 5.0 Stars
Camplux 10L Outdoor 2.64 GPM Portable Propane Gas Tankless Water HeaterBattery powered – 2 “D” cells
18 lbs.
Up to 68,000 BTU, Includes showerhead and hose

3,9 / 5.0 Stars

How to Pick Your Tankless RV Water Heater

When you are camping or traveling with your RV, few experiences compare to the rush that washes over you as you take a warm, relaxing shower after long day of outdoor activity.

Whether you’ve been biking, hiking, or simply taking in the seasonal scenery, your family and friends will gladly jump at the chance to enjoy such a heated luxury. But with a group of four or more people, a standard 6-10-gallon RV water heater is likely to run dry in short order.

Fortunately, there is now an RV add-on that can nip this problem in the bud and keep the warm water flowing. Tankless RV water heaters are the solution as they provide ample amounts of hot water in order to supplement the vehicle’s existing capacity.

Once you’ve committed to adding an RV tankless water heater, you’ll need to shop around for the best product to fit your needs and your budget.

To save you time, we’ve reviewed the top 5 best tankless RV water heaters available on the market today, including models from Girard and PrecisionTemp.

Each RV tankless water heater review includes a part-by-part break down of each model’s specifications, including those features that help each RV hot water heater stand out from the pack.

Permanent vs. Portable

Before seeking out tankless water heaters to compare and contrast, you need to decide where you would like to use your new appliance. More specifically, you need to decide if you would like for your water heater to be a permanent piece of your RV or if you would like it to be designed for alternative placement.

Permanent tankless RV water heaters have their distinct advantages, including more overall integration with your RV’s existing infrastructure.

Most permanent tankless water heaters are designed to complement or supplement an existing 6-gallon water heater, so they tend to be easier to install for long-term use. In general, these models are more practical for those who live in or spend extended periods of time in their RV.

However, portable tankless water heaters provide a similar quality of hot water production with added convenience. Most portable tankless water heaters come with a showerhead, making it easier to use outside of an RV on everything from people to pets.

In general, these models are more practical for those who use their RV for vacations with four or more people.

Fuel Efficiency

While in the great outdoors, you want to be sure to minimize your impact on the environment. In order to be eco-friendly while burning propane fuel, be sure to select an RV water heater that burns its fuel with maximized efficiency.

Not only is this good for the environment, but decreased fuel usage also means that you’ll expend your fuel cylinders much more slowly. In turn, a fuel-efficient water heater will save you money – perhaps even enough to pay back the cost of the heater itself.

When you purchase a new car or RV, you always take the time to compare fuel efficiency because you know fuel costs can really add up over time.

It is in your best interest to compare fuel efficiency among tankless water heaters in this same vein. More and more tankless RV water heaters are incorporating these types of fuel-efficent gas delivery systems.

As a result, you have an excellent opportunity to pick up a water heater that’s both kind to the environment and kind to your wallet.


When you purchase any type of camping gear, you seek out the best, most-acclaimed brands in order to own a piece of gear that won’t give up the ghost after just a few outdoor adventures. The same goes for tankless water heaters for your RV.

Even if a preferred model offers an enticing price tag, always be sure to do extra research to ensure that such a low-cost model is not also made from low-quality materials.

Whenever possible, speak with an RV specialist to learn more about what components go into a tankless water heater, as well as where those components are sourced from.

Once you know which brands source their parts from reliable sources, you’ll know which brands you can count on to supply a durable product that will serve you well trip after trip.


 Perhaps it goes without saying, but you should always consider cost when purchasing a new RV water heater. Though higher prices tend to correlate with a higher-quality product, you should always check to be sure that you’re not being hood-winked by a greedy retailer.

More importantly, you should always purchase the model that best fits your needs, even if it isn’t the most expensive (or the cheapest) model available.

One way you can cut out extra costs in your water heater purchase is by purchasing directly from the manufacturer, where available. Middlemen often add markups to online listings, so you’re most likely to get the best deal if you go directly to the source.

Tankless RV Water Heater FAQ

Question: Are tankless water heaters a worthwhile addition to my RV?

Answer: Absolutely! Once you feel the cascade of warm water wash over you after a long day of biking or trail hiking, you’ll surely know you’ve made a wise investment. Moreover, tankless water heaters provide you the aquatic flexibility to accommodate all of your friends and family members when it comes time to wash up.

Rather than worry about a couple individuals hogging all of the hot water, you can rest assured with a tankless water heater knowing that there will be plenty of water for your group of four or more people.


Question: What kind of fuel do tankless water heaters burn?

Answer: Most tankless water heaters for RVs run on standard propane. Most propane purchased in cylinders at local hardware stores or gas stations can be affixed to a tankless water heater using the appropriate regulator systems.

Depending on the model, tankless water heaters use different methods for igniting their internal heating system. Some use a pilot light of real flame, often provided by a line-in electrical hook up, while others use batteries to provide the ignition spark.


Question: Do I have to pay a higher price to get a higher quality tankless water heater for my RV?

Answer: Not necessarily, though every purchase involves some tradeoffs. Before you buy, make a list of which factors are most important to you when buying a tankless water heater for your RV. If cost is a considerable factor, be sure to seek out the value-focused models.

Even if you decide to reach for a model with a higher price tag, you can be sure that you’ve paid for more features and greater sense of reliability when it comes to producing hot water.

Buyer’s Tip for Tankless RV Water Heater

While a side-by-side comparison of key factors such as price is great method for deciding which RV tankless water heater to buy, by far one of the best methods for cementing your decision is by carefully reading customer reviews.

These reviews – provided with listings on most major online retailers such as Amazon and HomeDepot – provide you with insight into how a given model functions out in the field.

Customer reviews an especially effective method of identifying potential problems you may face with a given model after you purchase it.

For example, some lessor tankless water heaters (not listed in this review) are prone to erratic hot/cold cycles that can be difficult to fix and an overall annoyance when trying to take a relaxing outdoor shower.

When you purchased your RV, you very likely consulted customer reviews for that specific make and model before committing to your investment.

You should apply that same mentality to purchasing a tankless RV water heater whenever possible. If you do, you’ll find yourself much more satisfied with your purchase once you put into use on your next outdoor adventure.

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Shayanne Weeks

Shayanne is a freelance writer and marketer based in LA, California. Describing herself as a nomad, she has lived in Boise, Idaho and Seattle, Washington as well as Guadalajara, Mexico. As an extremely active person, she loves to snowboard, skateboard, and ski. She enjoys sharing her love for active sports with others through her “how to” sports guides and sports equipment reviews. Shyanne is addicted to the adrenaline rush she experiences during her outdoor pursuits, from ziplining in Mexico to snowboarding in Idaho.

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