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Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534

4.4 4.4 out of 5 stars 1,370 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in RV Water Heaters by GIRARD

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Purchase options and add-ons

Brand GIRARD
Product Dimensions 12.5"W x 12.5"H
Special Feature Lightweight
Color Gray
Wattage 42000 watts
Capacity
6 Gallons
Power Source
Wind Powered,Ac/dc
Material
Silicone
Item Weight
22 Pounds

About this item

  • POWERFUL PERFORMANCE — At 42,000 BTUs, this continuous hot water heater provides optimal performance for RV plumbing. The quiet, brushless motor runs on 12V power that operates at less than three amps for a nearly noiseless operation
  • CONSISTENT TEMP — The onboard microprocessor monitors incoming cold water temperature, flow rate and outgoing hot water temperature to maintain a steady water flow. It also regulates the burner to maintain a consistent temperature, preventing cold spots and scalding water
  • HIGHLY EFFICIENT — The Girard RV tankless water heater consumes half the LP gas that a six-gallon tank water heater would consume for the same amount of hot water
  • INTELLIGENT CONTROL — With a digital user control panel, you can adjust the temperature setting from 95 to 124°F, toggle between Fahrenheit and Celsius, get a continuous water outlet temperature reading and more. For easy troubleshooting, the control panel also displays error codes if issues arise
  • Professional Installation is strongly recommended
See more product details

Customer ratings by feature

Value for money
4.2 4.2
Easy to install
4.1 4.1
Temperature Control
4.0 4.0
Tech Support
3.6 3.6

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Ships from and sold by Elk Mountain.
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GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534
GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534
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Price$460.00$399.99$79.99$79.99$409.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to install
4.1
4.5
4.0
4.0
3.6
Temperature Control
4.0
3.7
3.9
3.9
4.0
Tech Support
3.6
3.4
3.3
3.3
2.8
Value for money
4.2
4.1
4.1
Sold By
Elk Mountain
RV Comfort Zone
Fogatti RV World
Fogatti RV World
RV Comfort Zone
capacity
6 gallons
6 gallons
6 gallons
6 gallons
6 gallons
power source
Wind Powered,Ac/dc
gas powered
Liquid Propane
mounting type
Built-in
Door Mount
Door Mount
material
Silicone
Alloy Steel
Alloy Steel
Alloy Steel
style
Indoor Installation
RV Water Heater
Door 15’’x18’’
Door 15’’x18’’
Modular

From the manufacturer

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Quick Facts

  • 42,000 BTUs provide optimal performance for RV plumbing
  • 12V power that operates at less than 3 amps
  • Equipped with quiet, brushless motor
  • Onboard microprocessor monitors inlet water flow, inlet and outlet temperature

Take the comfort of home on the road with a Girard RV tankless water heater.

A Leader in Tankless Technology

The Girard tankless RV hot water heater is the result of many years of research and experience. It is easy to operate and provides endless water at the precise desired temperature. The onboard microprocessor monitors incoming cold water temperature, flow rate and outgoing hot water temperature to maintain a constant, steady hot water flow. With an ultra-easy installation, this continuous hot water heater for RVs can fit into any tank water heater opening and won’t weigh down your rig with its surprisingly lightweight design. The water heater door is easy to open and close — no more twist latches! The hinged door and sliding latch allow fast, easy access to the water heater, and the silicone exhaust ring adjusts for easy alignment of the exhaust tube.


Features and Benefits

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Highly Efficient

The Girard RV tankless water heater consumes half the LP gas that a six-gallon tank water heater would consume for the same amount of hot water

Intelligent Control

With a digital user control panel, you can adjust the temperature setting from 95 to 124°F, toggle between Fahrenheit and Celsius, get a continuous water outlet temperature reading and more. For easy troubleshooting, the control panel also displays error codes if issues arise

Easy Installation

With the lightweight and compact design, the Girard hot water heater fits in any tank water heater cut-out opening and weighs 23 lbs. Additionally, there is no need for bypass plumbing, no tank to drain and no anode rods to change

Product guides and documents

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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GIRARD

GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534


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Product Description

Get endless hot water on-demand! The Girard tankless RV water heater provides hot water at the precise temperature you set it to. The onboard microprocessor intelligently drives the inner workings of the heater, monitoring incoming cold water temperature, flow rate and outgoing water temperature. It also regulates the burner so that you get a constant, steady water flow. This RV tankless water heater is a breeze to install. It fits into any tank water heater opening and requires no special plumbing or modifications to your rig. The water heater door is hinged, making it easy to open and close while maintaining quick and convenient access.The Girard tankless hot water heater comes with a user display that allows you to see the operating functions of the unit and adjust temperatures from 95 to 124°F. The digital controller also displays visual diagnostic information for easy troubleshooting if issues arise.Empower your mobile lifestyle with Girard. We offer one of the best-selling tankless water heaters for RVs and supply many RV manufacturers with high-quality water solutions using state-of-the-art electronics and components.

Important information

Wattage

42000 watts

Bulb Voltage

12 volts

Customer reviews

4.4 out of 5 stars
4.4 out of 5
1,370 global ratings

Customers say

Customers like the water heater's capacity, saying it has an endless supply of hot water. They also appreciate how easy it is to install, saying the water and gas line hookups were easy. Customers also like the temperature control, saying they can adjust the temperature for each task. They are happy with fit, and value. However, some customers have reported issues with consistency and quality.

AI-generated from the text of customer reviews

145 customers mention129 positive16 negative

Customers find the installation of the water heater to be super easy. They mention that it installs perfectly, with no modifications required. They appreciate the excellent instructions on troubleshooting, and the water and gas line hookups are easy.

"...Install is easy. Buy the correct door to install. The gas line for the old hot water tank hooked right up to this one...." Read more

"This tankless water heater got to us in good shape and was simple to install...." Read more

"Pretty easy to install. Water gets plenty hot. Has a thermostat to raise and lower how hot it gets...." Read more

"...I have to tell you the install was very easy. If you have just basic skills and knowledge you can install this yourself...." Read more

47 customers mention39 positive8 negative

Customers like the temperature of the water heater. They mention that it maintains a pretty consistent water temperature, and the digital remote is really nice. They also appreciate the constant hot water, and mention that the device is easy to install and quiet.

"The monitor allows for simple adjustment of the water temperature. It is a great feature. The monitor also has a red LED and a green LED...." Read more

"Pretty easy to install. Water gets plenty hot. Has a thermostat to raise and lower how hot it gets...." Read more

"...Easy install, whisper quiet, digital thermostat is miles better than the old “guess to set dial”, seems less sensitive to the outside temperature...." Read more

"...It kept the temperature perfectly...." Read more

42 customers mention42 positive0 negative

Customers are satisfied with the water capacity of the water heater. They mention that it provides an endless supply of hot water, and that it runs indefinitely.

"...This unit claims that it can run continuous for almost 2 hours. Have not tried it but our showers are now wonderful...." Read more

"...I keep it at 107 degrees F. which is perfect for showers without needing to add cold water...." Read more

"...It was plug and play... also endless hot water!!! The water is hot and stays at regulated temp...." Read more

"...We have plenty of hot water! No more turning the water on and off in the shower because we only have 6 gallons of hot water...." Read more

35 customers mention29 positive6 negative

Customers like the value of the water heater. They mention that it's well worth the money, less expensive than a tank unit, and a great buy.

"...Worth the investment." Read more

"...was fast, ordered on a Tuesday arrived Friday and the price was the best online." Read more

"...some longer trips soon and will update after, but so far seems well worth the money." Read more

"This is a great little water heater and at a very good price...." Read more

27 customers mention20 positive7 negative

Customers like the fit of the water heater. They say it fits perfectly, is compact, lightweight, and works like a charm. Customers are also happy with the size and say it's easy to adjust the out put of the product on the control panel.

"Love this tankless water heater. Well worth the cost. Fit perfectly, easy to install...." Read more

"...This water heater fit perfectly in to the hole left by our old 6 gallon Atwood...." Read more

"...Installation wasn't too bad, not completly direct fit but no major modifications needed...." Read more

"OK, I've got a Keystone Laredo MK335 and the unit fit perfectly...." Read more

311 customers mention187 positive124 negative

Customers have mixed opinions about the quality of the water heater. Some mention that it works fine, while others say that it rarely reaches temperature in kitchen and blasts out periods of cold water. Some customers also mention that the temperature setting wasn't terrible at first, and that they experienced a short delay for hot water.

"So far, very happy with this tankless heater. It's working fantastic...." Read more

"...UPDATEThis water heater works great and has the best features. I found a defective pipe weld but I still think this product merits 4.625 stars...." Read more

"...You will experience short delay for hot water but still good water pressure. You will hear a small humming noise when it runs. Well packaged...." Read more

"...This unit not only supplies endless hours of heated liquid enjoyment, it also comes with a control panel that we have mounted in the bathroom which..." Read more

18 customers mention9 positive9 negative

Customers are mixed about the ease of use of the water heater. Some mention it's fairly simple to install and operate, and the pex is super easy to work with. They say it'll change your life, and is convenient. However, others say that the wiring was confusing and complicated. The diagram is not very good, and running display unit wires is a bit tricky.

"...No problem as pex is super easy to work with. The 12v line that went to the old hot water tank was reused to power this one...." Read more

"...did have to be modified to connect to the unit as the connections were in different positions on the back of the unit...." Read more

"...The control panel is simple. It is preset at 115 degrees. you can change it up or down at your pleasure. We have found 115 is perfect for us...." Read more

"...Then running display unit wires is a bit tricky, if you want them located in a good spot..." Read more

23 customers mention0 positive23 negative

Customers are dissatisfied with the consistency of the water heater. They mention that it throws error codes all the time, or that it doesn't throw any. Some say that the product is defective and has constant issues. Overall, customers are not happy with the product's consistency and reliability.

"...I turned on the hot water and let it run. Again, it went ahead and errored (heat going to/above 140°F)...." Read more

"...It doesn't seem to like being turned on and off quickly and will give an error code if you do this, so I sometimes just run the water the whole..." Read more

"...Every time I stopped the water flow I would get an error code and the unit would need to be reset...." Read more

"...For the last two months it has been nothing but problems. It throws a new error code every other day that typically resolves itself after turning..." Read more

A little better than a tank unit and less expensive
5 Stars
A little better than a tank unit and less expensive
The monitor allows for simple adjustment of the water temperature. It is a great feature. The monitor also has a red LED and a green LED. Nowhere in the instructions does it explain the meaning of the LED’s. Apparently, the red LED means that the unit is armed. I still don’t know what the green LED means but I can switch it off and on. It doesn’t seem to matter.I bought this to replace a 6-gal tank unit which froze and burst. When I opened the Girard's white control box cover to inspect the circuit board, I found that the blower wiring harness was pinched during assembly between the box housing and the box cover possibly damaging the wires: just another example of lousy workmanship, poor supervision, and lack of quality control. To be fair, I find poor workmanship and manufacturing defects everywhere I go. Winterization is a problem because there is no way to drain the unit without draining the water system and blowing air through it. Otherwise, you need to maintain LP gas and 12V DC power to the unit to protect itself, or antifreeze the whole water system. This is important because if you drive/pull your RV through freezing temperatures, the heat exchanger could freeze because it is exposed to the outside air through the door vent and your propane needs to be shut off when you are on the road. I don’t like that because the rest of my water system is insulated and my fresh water tank is electrically heated to prevent freezing so that I can camp in freezing weather with liquid water, even without propane, and I wouldn’t have to drain the whole water system (and blow air through it) every time I drive through the mountains or spend a cold night in the desert without propane on. How is one going to blow air through the heat exchanger when on the road? Hot water tanks, by comparison, are insulated and come with a drain plug. This on-demand unit needs a drain valve so I tapped my water line at the lowest point next to the Girard unit and installed my own drain just for the hot water circuit. I may have voided the warranty by doing this but the warranty does not cover damage due to freezing. See attached photos.UPDATEThis water heater works great and has the best features. I found a defective pipe weld but I still think this product merits 4.625 stars. To be fair, I find defects in EVERYTHING!I sprung a leak in the water inlet pipe that the pressure relief valve is connected to. It happened when the temperature went down to 32°F for about an hour and I did not have 12Vdc power applied. The pipe that was damaged is only a $29-dollar part but a lot of work to replace.I highly recommend checking the pressure relief valve adjustment after installing the unit. This is not covered in the manual. It’s the thing that looks like a splined shaft in the bottom right.To adjust the pressure relief valve, turn the inside (core) of the relief valve with a flat screwdriver until water comes out with water pressure applied, then turn the core until the water stops.When I installed my unit, I also installed a drain valve in the lowest part of my hot water system so I would not have trouble winterizing in storage but I eventually discovered that I could have accomplished the same thing by removing the pressure relief valve assy by unscrewing it from the joint on the water inlet pipe. You can accomplish this by turning the splined shaft counterclockwise until it separates from the water inlet pipe. You will still need to blow some air through the system to get all of the water out.For all-season use, I think this is better than using an tank-type unit.
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Top reviews from the United States

Reviewed in the United States on August 8, 2022
21 people found this helpful
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Reviewed in the United States on August 18, 2019
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5.0 out of 5 stars A little better than a tank unit and less expensive
Reviewed in the United States on August 18, 2019
The monitor allows for simple adjustment of the water temperature. It is a great feature. The monitor also has a red LED and a green LED. Nowhere in the instructions does it explain the meaning of the LED’s. Apparently, the red LED means that the unit is armed. I still don’t know what the green LED means but I can switch it off and on. It doesn’t seem to matter.I bought this to replace a 6-gal tank unit which froze and burst. When I opened the Girard's white control box cover to inspect the circuit board, I found that the blower wiring harness was pinched during assembly between the box housing and the box cover possibly damaging the wires: just another example of lousy workmanship, poor supervision, and lack of quality control. To be fair, I find poor workmanship and manufacturing defects everywhere I go. Winterization is a problem because there is no way to drain the unit without draining the water system and blowing air through it. Otherwise, you need to maintain LP gas and 12V DC power to the unit to protect itself, or antifreeze the whole water system. This is important because if you drive/pull your RV through freezing temperatures, the heat exchanger could freeze because it is exposed to the outside air through the door vent and your propane needs to be shut off when you are on the road. I don’t like that because the rest of my water system is insulated and my fresh water tank is electrically heated to prevent freezing so that I can camp in freezing weather with liquid water, even without propane, and I wouldn’t have to drain the whole water system (and blow air through it) every time I drive through the mountains or spend a cold night in the desert without propane on. How is one going to blow air through the heat exchanger when on the road? Hot water tanks, by comparison, are insulated and come with a drain plug. This on-demand unit needs a drain valve so I tapped my water line at the lowest point next to the Girard unit and installed my own drain just for the hot water circuit. I may have voided the warranty by doing this but the warranty does not cover damage due to freezing. See attached photos.
UPDATE
This water heater works great and has the best features. I found a defective pipe weld but I still think this product merits 4.625 stars. To be fair, I find defects in EVERYTHING!

I sprung a leak in the water inlet pipe that the pressure relief valve is connected to. It happened when the temperature went down to 32°F for about an hour and I did not have 12Vdc power applied. The pipe that was damaged is only a $29-dollar part but a lot of work to replace.

I highly recommend checking the pressure relief valve adjustment after installing the unit. This is not covered in the manual. It’s the thing that looks like a splined shaft in the bottom right.

To adjust the pressure relief valve, turn the inside (core) of the relief valve with a flat screwdriver until water comes out with water pressure applied, then turn the core until the water stops.

When I installed my unit, I also installed a drain valve in the lowest part of my hot water system so I would not have trouble winterizing in storage but I eventually discovered that I could have accomplished the same thing by removing the pressure relief valve assy by unscrewing it from the joint on the water inlet pipe. You can accomplish this by turning the splined shaft counterclockwise until it separates from the water inlet pipe. You will still need to blow some air through the system to get all of the water out.

For all-season use, I think this is better than using an tank-type unit.
Images in this review
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Customer imageCustomer imageCustomer image
41 people found this helpful
Report
Reviewed in the United States on February 11, 2024
One person found this helpful
Report

Top reviews from other countries

Johnny Lunchbucket
5.0 out of 5 stars Pretty darn good
Reviewed in Canada on May 26, 2023
2 people found this helpful
Report
Relay
5.0 out of 5 stars Unlimited Hot Water! Easy Install
Reviewed in Canada on July 8, 2020
Customer image
Relay
5.0 out of 5 stars Unlimited Hot Water! Easy Install
Reviewed in Canada on July 8, 2020
Replaced my Atwood 6 Gallon with the Girard 2GWHAM as I full time in my RV. It's been a few months now of constant use and long showers and it doesn't have any problems.

Make sure you have at least 1/2 lines and 40psi water pressure. Anything less and the heat exhanger can over heat and it will show an e3 code and it won't light until the heat exchanger cools down.

People complain about the door options but if you do your research you will get it right. They have the information on their website and it tells you what door you'll need for what water heater you're replacing.
They don't include the doors because there are a couple different options and it wouldn't be cost effective to have all the doors included

I had to adapt Polybrutal to Pex but no big deal.

One of the best comfort upgrades you can make in your RV

Please check your water lines and gas line for leaks and get professional installation if you are not confident there will be no leaks in your install.

Happy RVing!

K9ADVCRU.
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15 people found this helpful
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Amazon Customer
5.0 out of 5 stars Survived -42 😁
Reviewed in Canada on December 23, 2022
One person found this helpful
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Amazon Customer
4.0 out of 5 stars Reliable, Winterized, Separate Display, Not good for Canadian Climate
Reviewed in Canada on November 26, 2019
Customer image
Amazon Customer
4.0 out of 5 stars Reliable, Winterized, Separate Display, Not good for Canadian Climate
Reviewed in Canada on November 26, 2019
Update after 2 years of use:
Well, it turns out it can't handle the cold water coming from our well during the fall & winter. It struggled to get the temp above 41°C, and in the deep -30°C it froze a few times and struggled to get the water above 37°C, despite it's freeze protection. During the spring and summer this unit has been flawless and only had a part break once. Support is good when you call in, so I still back this company, I just wish they could output more BTU!

Also, the 2nd tankless I use for my heated floors works, but can't get the temperature high enough to warm my floors enough since it shuts off when hot water is detected coming into the unit.

Initial Review Below:

There are tons of tankless systems our there and it's definitely hard to choose. We ended up going with this one because it's specifically winterized (automatically clicks on to prevent the heat exchange from freezing) and because the igniter is 12v powered, making it ideal for off-grid setups like mine.

The installation is pretty simple; you cut a 13" x 13" hole and slide it in, hookup the gas line, water inlets/outlets and the 12V wires, and you're basically done. You can also easily wire the display somewhere other than where the heater is, so to adjust the temp you don't need to goto the back shed as pictured in my photos.

The unit does not come with a door like in my pictures; you have to buy that separately. That may seem annoying, but I think the unit would just be priced higher if it did, and perhaps some people don't need the door at all. I'm not sure.

The unit has worked well every time, and we get hot water in about 3 - 6 seconds after turning it on. Considering the water we're piping into it is quite cold coming from a well, I think that's pretty efficient. We tend to fill a bucket with the first bit of cold water and pour that into our Berkey to use for drinking water.

I haven't used the unit for more then about 3 months so far, so we'll see how it performs in our cold Canadian winters where we can experience -30C.

The water heater has beeped a few times and an error shows on the display. Simply turning off the faucet and turning it back on seemed to fix it. Could be to do with the flow rate, again, not sure.

I'm actually purchasing a 2nd one of these to pump hot water into a tank that we'll be using in a closed loop system for hydronic heated floors. Wow, that sentence was a mouthful. Will report back to see if it all works out! We couldn't figure out a way to use one water heater for both applications, since the heated floors need to contain corn-based glycol to prevent them from freezing.

I'm not a plumber or electrician and have very little experience with this stuff, and was still able to get it all working, so you should too! Good luck.
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28 people found this helpful
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Amazon Customer
5.0 out of 5 stars Easy to install and endless hot water
Reviewed in Canada on July 22, 2023