10 Best RV Tankless Water Heaters Today

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In Brief: Best RV Tankless Water Heaters

  1. Eccotemp L10 2.6 GPM Portable Tankless Water Heater
  2. Takagi T-KJr2-IN-NG Indoor Tankless Water Heater
  3. Girard 2GWHAM On-Demand Tankless Water Heater
  4. Camplux 10L Outdoor
  5. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater
  6. Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters
  7. EZ 101 Tankless Water Heater
  8. Camplux 5L
  9. PrecisionTemp RV-550 Tankless Water Heater
  10. Girard Products 1GWHAF Tankless Water Heater
  11. EZ 202 Portable Propane Tankless Water Heater
How We Decided

22 products considered. 400+ reviews analyzed, 26 research hours spent, 15+ info. sources referred

More about our Methodology

When one is planning on camping, or road tripping in their recreational vehicles (RVs), the first and the most common issue to be solved is the regular supply of hot water.

It is almost impossible for some people to survive without hot water for their day to day needs even while on the road.

Tankless RV water heaters are the solution to this problem. While most RV owners used to previously rely on the tank models of water heaters that typically hold about 6 to 10 gallons, these days tankless water heaters are gaining more popularity.

The water held in a tank water heater tends to run out and then it takes a few minutes to heat the incoming water.

However, a tankless water heater heats the water as soon as the faucet is turned on and flow is detected. It can supply a consistent supply satisfactorily.

Comparison Table: Top Tankless Water Heaters for RVs

Product Flow Rate (GPM) Weight (lbs) Energy Efficiency Price

Eccotemp L10

2.6 27 Check Price

Takagi T-KJr2-IN-NG

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas

6.6 37 81% Check Price

Girard 2GWHAM

GIRARD 2GWHAM Tankless Water Heater

NA 21.2 Check Price

Camplux 10L

Camplux 10L Outdoor 2.64 GPM Digital Display Portable Propane Gas Tankless Water Heater

2.64 18.08 11.50% Check Price

Rinnai RUC98iN Ultra Series

Rinnai RUC98iN Ultra Series Indoor Natural Gas Tankless Water Heater, Twin Pipe

9.8 82 95% Check Price

Eccotemp FVI12-LP

Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters, White

3.6 33 Check Price

EZ 101 Tankless Water Heater

EZ 101 Tankless Water Heater - Propane (LPG) Gas - 2 GPM - Small - Portable - Point of use - Battery Powered Ignition - Camping - RV - FREE UPGRADE

1.6 14 Check Price

Camplux 5L

1.32 14 Check Price

PrecisionTemp RV-550 Tankless Water Heater

PrecisionTemp RV-550 Tankless Water Heater - Wall Vented

1 32 Check Price

Girard Products 1GWHAF

1.5 24.1 Check Price

EZ 202

EZ 202 Tankless Water Heater - Propane (LPG) Gas - 4 GPM - Small - Portable - Battery Powered Ignition - Digital Display - Camping - RV - Hunting

3.2 28 Check Price

Article Outline

The following sections of this article take a look at the various factors to be considered when purchasing a water heater for an RV, how to take good care of the unit and maintain it for long life.

The article also reviews some of the most popular products in this category to help the readers make a smart purchase decision for a tankless water heater well suited to their needs.

Reviews of Best Tankless Water Heaters for RVs

1.best overall rating

Eccotemp L10 2.6 GPM Portable Tankless Water Heater

Based out of Charleston, Summerville, South Carolina, Eccotemp was started in 2004 as a manufacturer of energy-efficient products.

They were a small family-owned business and have now evolved into a much bigger business.

Their current range of offerings includes whole house, portable and electric models of water heaters. Other products are mainly parts and accessories for these water heaters.

This tankless water heater by Eccotemp is capable of reaching temperatures from 50 °F to 140 °F. The heater features an electronic ignition.

There is also a backup ignition option available with 2 “D” cell batteries which come handy in places where electricity is not available easily.

The water heater comes with an upgraded chrome shower head and a stainless steel hose. The operating range of this tankless water heater is 20 to 80 psi. One of the safety features of this water heater is a 45-degree tilt switch.

The product is specifically designed to be good for camping and outdoor usage. The unit weighs 27 lbs and the dimensions of the same are 15 x 6.5 x 35 inches.

Some of the key USPs of this tankless water heater is listed below :

  • 9′ CSA approved gas regulator
  • 20-minute automatic safety shutoff timer
  • Comes with a stainless steel raincap
PROS:
  • Easy installation
  • Compact design
  • Lightweight
  • Easy to use temperature controls
  • Easy to store and carry
CONS:
  • Technical support could be better

Check Reviews & Price on Amazon

2.best overall rating

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas

Takagi came into existence in 1952 and for over 60 years, it has been involved in the manufacture of eco-friendly, energy efficient water heaters.

They are focused on creation of innovative and good quality water heaters for commercial and residential usage.

The maximum and minimum BTUs supported by this heater are 140,000 and 19,500 respectively. It is equipped with a copper heat exchanger.

The safety features of this water heater include freeze, overheat, surge protection and troubleshooting diagnostic codes. It has a maximum flow rate of 6.6 GPM.

One of the notable features of this tankless water heater is that it can operate on both natural gas or liquid propane, depending upon the user’s preference. It also requires a four-inch category III stainless steel venting.

There are inlet and outlet thermostats for constant temperature monitoring. The unit weighs 38 lbs and the dimensions of the same are 6.7 x 13.8 x 20.3 inches.

The unit has a ten-year warranty on the heat exchanger and a five-year warranty on the parts (in case of residential usage, 3 years in case of commercial usage).

It should be noted that the warranties are valid only if the water heater has been installed by a licensed technician.

Some of the key USPs of this tankless water heater is listed below :

  • Energy factor of 0.81 – 0.83
  • Perfect for light residential use and radiant heating applications
  • The smallest model in the Takagi lineup
PROS:
  • The model supports natural gas and liquid propane
  • Easy, straightforward installation
  • Can handle multiple points of application with ease
  • Cost-effective
CONS:
  • Heavyweight unit
  • Not compact

Check Reviews & Price on Amazon

3.best overall rating

Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters

Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters, White

This gas tankless water heater by Eccotemp can boast of an extremely compact design making it ideal for an RV installation. It can be fit into the smallest spaces of small cabins or apartments as well.

The only requirement is sufficient ventilation for the exhaust. The output flow rate is 3.6 GPM and one of the notable features of this gas tankless water heater is a safe electronic ignition system.

The water heater kit includes a termination pipe, horizontal venting, a 2 1/2″ 90-degree Elbow with Backflow Preventer and some other installation hardware.

These accessories are not necessarily provided with other heaters.

There is a mechanism in place that activates the heater only on the detection of a water flow through the system. This ends up in a lot of water and energy conservation. The model has minimum noise levels while operating.

The front face of the heater features a digital display that allows one to accurately set the temperature in tiny increments.

The unit weighs 33 lbs and the dimensions of the same are 29 x 17 x 11 inches.

Some of the key USPs of this tankless water heater is listed below :

  • Compatible with a 20 to 100-pound (lb.) propane tank
  • Offers a two year limited lifetime warranty
  • Water temperature range of 80 °F – 140 °F
  • Dual mode operations (manual and electric), allows temperature controls in manual mode
PROS:
  • Ease of installation is high
  • Good energy savings guaranteed
  • Good value for money
  • Prompt and helpful customer service
CONS:
  • Cannot weather extreme climatic conditions

Check Reviews & Price on Amazon

4.best overall rating

Camplux 10L Outdoor 2.64 GPM Digital Display Portable Propane Gas Tankless Water Heater

Camplux 10L Outdoor 2.64 GPM Digital Display Portable Propane Gas Tankless Water Heater

Camplux is a known manufacturer of outdoor camping gear and related accessories.

Apart from a great range of portable tankless water heaters, they also offer water pumps, electric gas heaters, stoves, portable gas grills, water pumps etc. They also rework and sell refurbished models.

This Camplux item comes in two variants, eco and full switch that enable one to spare more gas when it very well may be finished.

It is explicitly intended for outside establishment, be that as it may, can be introduced inside also if a pipe or pipe is introduced and there is adequate ventilation.

The power output of this device can go as high as 68,000 BTU/hour which easily ensures a constant supply of hot water.

The energy savings of this unit are up to 11.5%. The unit is made in a compact, space-efficient manner that allows for installation in tight corners.

The safety features of this unit include anti-freezing protection, overheating protection and flame failure mechanism. The heater comes with CSA approved gas regulators, adaptors and any other equipment needed for installation.

The unit weighs 18.08 lbs and the dimensions of the same are 12.8 X 6.1 X 21.65 inches.

Some of the key USPs of this tankless water heater is listed below :

  • Can bear water pressures ranging from as low as 2.8 PSI to 110.0 PSI
  • Maximum flow rate of 2.64 GPM
  • Multiple safety features for outdoor installation
  • Kit includes components like a showerhead and a hose
PROS:
  • Good range of water pressure
  • Instant hot water in a matter of seconds
  • Can weather extreme weather conditions
  • Pocket friendly purchase
  • Easy installation
  • Lightweight and easy to mount
CONS:
  • Doesn’t have on/off switch to regulate water supply

Check Reviews & Price on Amazon

5.best overall rating

Girard 2GWHAM On-Demand Tankless Water Heater

GIRARD 2GWHAM Tankless Water Heater

Girard Systems are known to manufacture specialty products for RVs. They were first established in 1996 and for over 20 years have been in this business based out of San Clemente, California, USA.

Some of the products that they manufacture include awnings, tire shades, television boxes, tankless water heaters, parts, and related accessories for these products.

This Girard tankless water heater runs on liquid propane and has a technology to regulate the burner to maintain a consistent temperature for the water. The tankless water heater can operate efficiently in cold climatic conditions.

At 42,000 BTUs, the water heater provides optimal performance. It has a quiet brushless motor.

It is one of the only tankless water heaters designed specifically for RVs and has a state of the art wall mounted digital controller that allows one to set temperature from 95 °F to 124 °F.

The water heater weighs 21.2 lbs and the dimensions of the same are 15.5 x 22.5 x 12.5 inches.

Some of the key USPs of this tankless water heater is listed below :

  • No special gas lines or plumbing required
  • Freeze protection
  • Hinged door for easy access to the water heater
  • Silicone exhaust ring for easy alignment of the exhaust tube
  • Visual diagnostics on User Control Panel (UCP) for easy troubleshooting
PROS:
  • Good value for money
  • Easy installation process
  • Excellent technical support
  • Fast heating action for instant hot water
CONS:
  • Design improvements are needed

Check Reviews & Price on Amazon

6.best overall rating

EZ 101 Tankless Water Heater

EZ 101 Tankless Water Heater - Propane (LPG) Gas - 2 GPM - Small - Portable - Point of use - Battery Powered Ignition - Camping - RV - FREE UPGRADE

EZ Tankless was established in 2009 and they manufacture a wide range of innovative products in the water heating technology space. They are a business based out of Indiana, USA.

Some of these products that they manufacture include tankless water heaters, exhaust pipes, filters, service valves, propane regulators, and related parts and accessories.

This EZ tankless water heater operates on natural gas and is best suited for camping and other outdoor activities. It can easily operate with a garden hose pipe inlet water supply.

The water heater weighs a meager 14 lbs making it very lightweight and portable. It is also a well-tested product in the USA laboratories of the makers.

There are three dials on the front face of the water heater that allows for temperature adjustments based on the seasons. For example, if its summer-only burner can be used whereas in winters all three burners can be employed.

This allows one to adjust the intensity of the flame.

The water heater also features an automatic ignition system that powers on and extinguishes depending on the water flow. A showerhead with a hose is included with the water heater kit.

Some of the key USPs of this tankless water heater is listed below :

  • Battery powered ignition
  • Very lightweight and portable
  • No electrical plug in required
  • Aesthetically pleasing design
PROS:
  • Easy to install
  • Automatic ignition design
  • Good customer service
  • Great value for money
  • Long lasting durable product
CONS:
  • No digital display

Check Reviews & Price on Amazon

7.best overall rating

Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater

Rinnai RUC98iN Ultra Series Indoor Natural Gas Tankless Water Heater, Twin Pipe

A Japan based home appliance company; Rinnai Corporation was founded by Hidejiro Naito and Kanekichi Hayashi in September, 1920.

It is currently headquartered at Japan and one of the leading business in the residential and commercial tankless water heaters space (gas-based).

But gas heaters are not the only products that they manufacture, they also offer direct vent furnaces, vent free convectors, condensing boilers and other equipment in the home heating space solutions.

This tankless water heater is a part of the Sensei series which is known to be a condensing type heater series.

The unit advertises to have ultra-low NOx emissions and a maximum BTU of 199,000. The space-saver design allows for installation in the tightest corners and inconspicuous spaces, if one desires an indoor installation.

The energy efficiency rating for this device ranges between 0.92 and 0.96.

The tankless unit is equipped with a recirculation technology that aids in faster hot water delivery. The minimum and maximum showers that this unit can support subject to weather conditions are 3 and 6 respectively.

It weighs 82 lbs and the dimensions of the same are 10 x 18.5 x 26 inches.

Check out the details of this product at :

 

Some of the key USPs of this tankless water heater is listed below :

  • 12-year warranty on the heat exchanger and 5-year warranty on parts
  • Impressive flow rate of 9.8 GPM
  • Maximum BTU per hour is 199,000
  • Temperature range of 98° F to 185 ° F for commercial tankless water heaters
  • Temperature range of 98° F to 140° F for residential tankless water heaters
PROS:
  • Consistent hot water available at the desired temperature
  • Installation is easy, self-installation possible
  • Product life is long
CONS:
  • Temperature range could be better
  • Weighs a bit on the heavier side

Check Reviews & Price on Amazon

8.best overall rating

Camplux 5L 1.32 GPM Ventfree Outdoor Portable Propane Tankless Water Heater

This tankless Camplux water heater is known to operate with water pressures as low as 2.5 psi. The water flow supported is 1.32 GPM for maximum and minimum temperatures raise of 46.4 and 114.8 respectively.

It has a very compact size which allows it to be fitted in a convenient outdoorsy setup. It also features a handle for more portability.

Some of the safety features on this tankless water heater are flame failure protection, anti-freezing protection (for cold climates) and oxygen depletion safety shutoff protection.

The maximum power output for the device is 34,000 BTU. It is powered by 2 D batteries which remove the reliance of the device on the availability of electricity for ignition.

It can save up to 50% on the water heating costs and considerably save the liquid propane gas by using it conservatively.

The unit weighs 14 lbs and the dimensions of the same are 11.4 x 4.3 x 14.8 inches.

Some of the key USPs of this tankless water heater is listed below :

  • Operating water pressure range of 2 to 110 psi
  • Energy saving technology
  • Highly portable
  • The average battery life of 180 days
PROS:
  • A great temperature control function
  • Ease of installation is high
  • Reliable performance
  • Great for camping, off grid usage
CONS:
  • Customer service could be better

Check Reviews & Price on Amazon

9.best overall rating

PrecisionTemp RV-550 Tankless Water Heater

PrecisionTemp RV-550 Tankless Water Heater - Wall Vented

Precision Temp is a business that solely manufactures water heaters and they are based out of Cincinnati, Ohio, USA.
This tankless water heater is designed specifically for RVs, mobile homes, cabins, trailers and more.

It is a product that conveniently vents through the sidewall and provides hot water on demand. It takes up half the space and weighs a third of a ten-gallon tank. There is no pilot light.

The installation is pretty straightforward and it is a high-efficiency device that optimizes the consumption of liquid propane. The heating is possible due to a reliable and proven VariFlame control system.

The entire tankless water heater is designed, assembled and tested in the USA. The unit weighs 32 lbs and the dimensions of the same are 13.5 x 13.5 x 14.2 inches.

Some of the key USPs of this tankless water heater is listed below :

  • Automatic gas modulation
  • Consistent temperature control
  • 50% less propane consumption
  • Highest hot water output in the industry at 55,000 BTUs
PROS:
  • Recommended by users
  • Easy DIY installation
  • Good customer service and troubleshooting
  • Instant hot water supply
  • Can support multiple water outlets
CONS:
  • Temperature control function could be better

Check Reviews & Price on Amazon

10.best overall rating

Girard Products 1GWHAF Tankless Water Heater

This water heater is a Girard special induced draft model designed specifically for recreational vehicles. One of the main features of this tankless water heater is the dual BTU burner that allows the user to set the heater in two modes.

The LOW mode is defined at 27,000 BTUs and the HIGH mode is defined at 34,000 BTUs.

The incoming water temperature will rise by 40 °F to 60 °F depending on the flow and the pressure. The unit weighs around 24 lbs and the dimensions of the same are 17.7 x 15.2 x 15 inches.

Some of the key USPs of this tankless water heater is listed below :

  • Dual BTU modes
  • Power Blower Induced Draft
  • Liquid Propane based water heater
PROS:
  • Fairly direct and easy installation
  • Easy to use the remote controller
  • Easy to use temperature setting
  • Works as expected
CONS:
  • Customer support service could be better
  • Component quality could be better

Check Reviews & Price on Amazon

1.best overall rating

EZ 202 Portable Propane Tankless Water Heater

EZ 202 Tankless Water Heater - Propane (LPG) Gas - 4 GPM - Small - Portable - Battery Powered Ignition - Digital Display - Camping - RV - Hunting

This tankless water heater by EZ delivers a consistent water supply at 3.2 GPM at 45 °F. The model supports low water pressure ignition at 2.9 psi. There is no plug in required as the ignition is also supported by 2 D cell batteries.

This makes the unit well suited for barns, campers, and more outdoor activities.

There is no pilot light which makes it safe and convenient to use. The automatic ignition is good for energy savings.

The aesthetically pleasing and compact design make it easy to install and fit into tiny spaces and also make it unobtrusive. The device has a thermal efficiency rating of 84%.

The unit weighs 28 lbs and the dimensions of the same are 27.5″ x 14.5″ x 5.5″.

Some of the key USPs of this tankless water heater is listed below :

  • Rated heat output of 84,000 BTUs
  • Well suited for camping expeditions
  • Allows pre-setting desired water temperature before use
PROS:
  • Good, reliable product
  • Great customer service
  • Can give as much hot water as required
CONS:

Check Reviews & Price on Amazon

Buying Guide for RV Tankless Water Heater

Camplux 5L 1.32 GPM Portable Outdoor Tankless Propane Water Heater The following are a few parameters that should be kept in mind when purchasing an RV tankless water heater. These will help one in making an accurate purchase according to their requirements.

Electric or Gas Model

There are two models of water heaters which are predominantly available in the market. The electric model relies on constant electricity supply to run smoothly. The gas model is powered by natural gas or liquid propane.

The electric models are more environment-friendly and also cheaper than the gas models. However, the gas versions have their perks. They are much more efficient and can give better temperatures, quicker.

Installation Space

The gas-based tankless water heaters models oftentimes require sufficient ventilation. This could require some amount of rework to be done if one plans to install this variant in their RV.

Some vent-free models eliminate the requirement of flue installation.

The electrical models do not require any ventilation space, however, there might still be some plumbing or electrical wiring rework needed which will cost a bit. These considerations should be given some thought.

Points of Use

If one is looking for getting hot water in a small sink or a small showerhead, there are smaller models of tankless water heaters that can support this requirement.

Other models can support many showerheads and faucets at the same time. One can choose depending on the frequency of use and usage requirements.

Power Output

There is usually a BTU (British Thermal Unit) rating that is given to all tankless water heaters which are an indicator of the heating capacity of the unit.

One should choose a model with a higher BTU if the unit has to be used in cold climatic conditions.

Accordingly, if there are multiple points of application, a model with a higher BTU will work better than a lower BTU model.

Installation Type

The tankless water heaters can either be installed outdoors or indoors. One should carefully read the specifications that are mentioned along with the unit and follow them closely.

An outdoor unit should strictly be kept outdoors and vice versa.

An indoor unit may not be designed to withstand the harsh weather conditions and it may damage the unit.

Water Flow Rate

There are a few models these days that can ignite automatically even at low water pressures (as low as 0.2 psi). However, for most models, a certain minimum water flow rate is required to get the unit running.

One should check the average water pressure in their RVs before buying a unit. These water pressure requirements are generally mentioned in the instruction manual.

Apart from all these factors, one also needs to keep an eye on the budget. Tankless water heaters are generally in the range of a few hundred dollars; however, this is a long term investment.

It is important to focus on factors like the brand of manufacturers, customer reviews of the product, safety measures and regulations followed while manufacturing the product, energy efficiency of the product and more.

These can go a long way in ensuring that one gets the appropriate models for their needs. A tankless water heater can last as long as 20 years which makes it very important to consider everything carefully and then making the purchase.

Benefits of Tankless Water Heater in RV

Camplux 5L 1.32 GPM Portable Outdoor Tankless Propane Water Heater

The following points highlight some of the benefits of using a tankless water heater in an RV. These advantages are a clear indication of how tankless versions of water heaters for RVs are much better suited than water heaters with tanks.

Durable and Long-Lasting

The tankless water heaters tend to last longer with proper care and maintenance than the water heaters with a tank. A tankless heater can give reliable performance for as long as two decades whereas the average life of an instant water heater (tank) is about 6 to 10 years.

This means that even though one might have to incur a one-time cost that is higher than average, the long life of the heater ensures that not only are the costs recovered but it also proves to be cheaper or more cost-effective over the long period.

Instant Hot Water in the Wilderness

When one is taking their RV out for a spin in the wilderness or for a cross country road trip, the primary concern is the availability of hot water.

The tankless water heaters are an instant solution to this problem. Various models can be chosen according to one’s preference.

These can serve one small sink or a sink and a showerhead or even multiple showerheads at the same time depending on their capacity. This greatly eliminates the hot water woes of campers and tourists.

Multiple Points of Access

There are tankless water heater models that are extremely cheap and portable and can be fitted under a sink to get hot water in small quantities.

And on the other end of the spectrum, there are tankless water heater models which may be fitted at a single location in the RV.

These can be connected to multiple faucets and showerheads for simultaneously supplying hot water and catering to the needs of more than one person.

More Water Conservation

In the water heaters that come with a tank, the process of heating the water taking a few minutes on an average.

When this is the case, the user generally lets the water from the faucet run for those few minutes without using it as it is not the correct temperature. Over the long run, this causes a considerable wastage of water.

On the contrary, a tankless water heater can attain the desired temperature of water instantly.

This prevents any wastage from the user and since there is no need for storage of water, electricity is also conserved in trying to heat water that is eventually not used.

Pocket-Friendly

Tankless water heaters are the way to go when it comes to saving electricity. They are triggered automatically when water starts flowing through the faucet to which they are connected.

The same technology also makes sure that the heater is turned off when the water supply is stopped. This saves a lot of electricity and this automatic trigger also helps to limit gas consumption.

Also, in the tank version, the water that is currently in the tank is already heated to a certain temperature and if the user turns off the faucet, all the electricity or gas used to heat that water up is wasted.

Easily Adjustable Controls

Almost all the tankless water heaters available in the market today are equipped with a smart digital display that has arrows or a temperature knob that allows one to adjust the temperature.

These temperature controls allow adjustment to the temperature which is as small as 1. This gives a lot of control over the temperature of the water.

Space Savers

Tankless water heaters are extremely compact and can be fitted into the smallest of the spaces with ease. These heaters are designed for single or multiple points of applications.

The single points of application heaters can be fitted under a sink and supply instant hot water as and when needed.

The heaters are also designed in an aesthetically pleasing manner with a limited number of buttons or controls on the body to make them user-friendly.

These are some of the benefits of using a tankless water heater in the RV.

Benefits and Limitations of Gas RV Tankless Water Heater

EZ 101 Tankless Water Heater - Propane (LPG) - Portable - Battery Powered Ignition - Camping - RV - FREE UPGRADE

The benefits of a gas RV tankless water heater are discussed below.

Increased Efficiency

A gas tankless water heater has more power contrasted with an electric rendition of practically identical limit. They are about multiple times increasingly proficient and utilize something like 90% of the gas accessible rather than 80% energy usage in different variations. It is effectively ready to help various shower heads in the house. Because of more power and effectiveness, it is additionally increasingly viable in chilly climate conditions.

High Environment-Friendly Quotient

There are many heaters available in the market making use of different types of fuel to run. A gas based tankless water heater making use of natural gas or liquid propane is significantly more environment friendly than these counterparts.

The design of these heaters is strictly dictated according to the standards of manufacturing that define a permissible limit for NOx emissions.

These heaters are also known to have lesser carbon footprint, almost 45% lower than the other heaters.

Very Durable and Reliable

There are many places that suffer from power outrages or power surges. In case of any natural calamity, electricity is one of the first things to go.

This makes it difficult to ensure a reliable and consistent supply of hot water if one is solely dependent on the availability of electricity.

However, a gas line is fairly unaffected by any environmental factors as it is usually underground and safe from any climatic tampering.

The supply is steady and consistent ensuring hot water at all times. The limitations of a gas RV tankless water heater are discussed below.

More Specific Installation Requirements

Most gas heaters selling in the market today require one to install a proper flue system in place for a secure ventilation path. This is a non-negotiable requirement and usually takes up a lot of space.

There is a need for space creation in case there is none to properly install a tankless gas water heater and a proper inlet and outlet exhaust.

Gaseous Emissions

An electrical model may be less efficient but it does not have any harmful environmental emissions. This is in contrast to the gas based tankless water heaters that have NOx emissions.

These emissions are strictly monitored and kept under the permissible limits that are defined by standards and regulations; however, there is still some level of exhaust which has some amount of effect on the environment which is not very positive.

Cost Intensive

Although gas based tankless water heaters are more efficient, they are also more expensive units than their electric counterparts.

This one-time cost along with the installation charges may make a gas tankless water heater seem like a big investment in terms of time, money and efforts.

One also has to consider costs in terms of rework required for installation. The ventilation systems are a must and there may be a need for purchasing additional equipment and installation costs for setting up this system.

Benefits and Limitations of Electric RV Tankless Water Heater

Camplux 10L Outdoor 2.64 GPM Digital Display Portable Propane Gas Tankless Water Heater

The benefits of an electric RV tankless water heater are discussed below.

More Pocket Friendly

Out of the gas and the electric models of tankless water heaters, electric water heaters are a little more budget friendly as compared to the other.

The installation is also fairly simple which means that there are not much costs involved in rework. On the other hand, a gas tankless water heater also requires heavy installation work that can raise the costs significantly.

Environment-Friendliness is High

The only requirement of an electric tankless water heater is the electricity that it needs to run.

On the other hand, a gas tankless water heater, the primary source of energy is natural gas or liquid propane which is already scarce and hard to come by.

Apart from these, there are NOx emissions that are a part and parcel of any gas water heater. These also affect the air quality in the surrounding areas. The limitations of an electric tankless RV water heater are discussed below.

Installation Requirements

Electric tankless water heaters are mostly built for indoor installation which means that they are not built to withstand any weather conditions that they may be exposed if installed outside the house.

For example, an outdoor installation requires freeze protection, anti-corrosion protection etc. Therefore, an electric water heater has to be installed carefully inside the house, well protected from these negative externalities.

The electric connections that form a part of the water heater are extremely sensitive and can be disturbed by seepage of water, or any impurities like dust.

Increased Costs

Despite the fact that the underlying price tag might be lower, installation of an electric water heater may require introducing extra pipelines and an installation expert may be required to change the wiring.

Every one of these expenses is far beyond the underlying price tag. If sufficient space is not there, rework is a must and raises the bill significantly.

Ineffective in Cold Climatic Conditions

It is the experience of many customers and now a known fact that gas tankless water heaters are more efficient at dispensing hot water than electric water heaters.

This is a significant finding because in cold climatic conditions, it proves to be a major drawback for electrical models. 

How to use RV Tankless Water Heater

Camplux 10L Outdoor 2.64 GPM Digital Display Portable Propane Gas Tankless Water Heater

The following few points indicate how to use an RV tankless water heater.

  • The RV tankless water heater comes with a power switch that can be kept on the whole camping season. It is just a standby switch so it will not drain any power from the engine.
  • The temperature of the water is determined by the flow which can be low, medium or high. Once the faucet is turned on, it will take a few seconds up to a minute for the water to turn warm.
  • The temperature rise can be also be controlled by the knob which allows one to set the exact BTUs needed.
  • All tankless water heaters also come with an instruction card that clearly illustrates how to use the temperature knob accurately to get the correct temperature.
  • The knob should be adjusted to get the correct amount of power to the tankless water heater. This will help in successfully getting hot water to multiple points of application in the RV.

Maintenance of RV Tankless Water Heater

The following steps are useful in the maintenance of the RV tankless water heater. These are particularly essential because a water heater can break down over infrequent usage or if it is used too frequently without proper care.

Keeping a few things in mind while using the RV tankless water heater can help in prolonging the life of the product.

Pre-Maintenance Care

Before starting any maintenance procedure on one’s tankless water heater, one has to ensure that all the electrical or gas connections are turned off.

It is even a good practice to remove all connections (gas or electrical) and completely unplug the heater from any supply.

There is a valve that controls the pressure inside the heater. It should be made sure that the valve is in a position where the pressure is released.

Cleaning the Anode Rod

The primary use of an anode rod is to attract the corrosion causing elements in the hard water or any water supply.

This makes sure that the heat exchanger in the water heater remains free from rusting which can significantly reduce its performance.

This prolongs the life of the copper based elements in the heater. The rod should be checked for corrosion and if there is extensive damage, it should be replaced by a new one.

Flushing

This is a process of running water or a vinegar solution through the tankless water heater at a higher pressure to remove the impurities, sediments or deposits.

Sometimes these impurities may clog the faucets while usage and reduce the flow of water. This will reduce the flow of water through the faucet and cause wastage of electricity or gas.

Flushing helps in preventing this situation from arising.

Connections

Whether it is an electric or a gas model, the connections should be carefully checked to ensure that they are fitted tightly and correctly. In electrical fittings, if the connections are not done properly, it may lead to short circuiting.

In the case of gas tankless water heaters, gas leakages may occur and this could cause serious damage. Therefore, one should take care of these things.

Repairs and Replacements

A big part of the maintenance activity is to check all the components for any damage and replace them if needed.

Regularly conducting maintenance checks ensures that any defects are caught beforehand and can be rectified before any incident occurs.

These are a few of the tips that one can follow to get the most out of the tankless water heater.

FAQs

Can a Tankless Water Heater be Installed with an RV Sink?

Yes, it is possible for a tankless water heater to be installed under an RV sink. There are specially designed units for this very purpose that is very lightweight and able to provide hot water instantly. The unit can be activated at very low flow rates and can supply hot water instantly.

Should the Water Heater be Connected to a Shower Head always or can the hot Water Side be Connected directly to the Faucet?

It is good practice to connect the hot water supply to a shower head; however, one may connect it directly to the faucet as well. The hot water supply will get triggered as soon as the faucet is opened.

How to Convert an RV Water Heater to Tankless?

It is best practice to seek professional help for conversion from a tanked water heater to a tankless version. It required a certain amount of planning and careful estimation of costs. There is also a need to figure out how the wiring or other configurations might have to be changed to support this conversion.

How to Install a Tankless Water Heater in an RV?

Before the installation process, one should take into consideration how much space they have and what the electrical and plumbing connections in the RV are like. After this, when a suitable unit is purchased, it has to be mounted and all the relevant connections have to be made.
It is advised that the installation be handled by a licensed professional as they are better aware of the codes governing the local practices regarding plumbing, electricity or gas. Also, in a lot of cases, the warranty given by the manufacturer is only valid if the installation is done by its professionals.

How many Gallons Per Minute does an RV Shower use?

A normal RV shower typically uses 3.8 gallons of water per minute. A water heater should have at least that much GPM to meet the hot water requirement of that showerhead.

Can a Tankless Water Heater be put in a Camper?

Yes, a tankless water heater can be installed in a camper. There are brands that specifically design heater for campers and RVs so that they can be installed easily and provide hot water consistently.

Final Words

RVs are a crucial part of the entire outdoor experience and ensuring that one has a well functioning RV and tankless water heaters fitted in is essential for a hassle free trip.

Once a person is aware of what features they want and what functionalities could support them, shopping for a tankless water heater for an RV becomes fairly simple.

A clear understanding of the product and its limitations is essential. A tankless water heater which is durable has a good customer review record and has excellent weather and corrosion protection would be the ideal choice.Here is the list of our top picks again for you. Check out the specs, customer reviews, price and offers on Amazon – 

 

Last update on 2020-12-04 / Affiliate links / Images from Amazon Product Advertising API

ReviewsWorthy Team

Our team consists of enthusiastic and passionate people from different fields and experience. Some are geeks and spend most of their time among gadgets while others love nature and are always on the move! We spend 10s of hours researching and writing on each topic. The articles are then quality checked by our editors. View our "About us" section for more details about process and team.

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