Brand | GIRARD |
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Product Dimensions | 12.5"W x 12.5"H |
Special Feature | Lightweight |
Color | Gray |
Wattage | 42000 watts |
Voltage | 12 Volts |
Heat Output | 42000 British Thermal Units |
Style | Indoor Installation |
Manufacturer | GIRARD PROD |
Part Number | 2GWHAM |
Item Weight | 22 pounds |
Item model number | 2022107534 |
Item Package Quantity | 1 |
Special Features | Lightweight |
Included Components | Girard 2GWHAM On-Demand GSWH-2 Tankless RV Water Heater |
Batteries Included? | No |
Batteries Required? | No |
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93% positive over last 12 months
Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534
Purchase options and add-ons
Brand | GIRARD |
Product Dimensions | 12.5"W x 12.5"H |
Special Feature | Lightweight |
Color | Gray |
Wattage | 42000 watts |
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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
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This Item GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534 | Recommendations | dummy | dummy | dummy | |
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Price | $460.00$460.00 | $399.99$399.99 | $79.99$79.99 | $79.99$79.99 | $409.99$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 |
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From the manufacturer
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 EfficientThe 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 ControlWith 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 InstallationWith 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 |
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Product information
Technical Details
Additional Information
ASIN | B019BWN8E2 |
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Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | #11,826 in Automotive (See Top 100 in Automotive) #20 in RV Water Heaters |
Date First Available | December 14, 2015 |
Warranty & Support
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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
42000 watts
12 volts
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
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Things I learned during the install and first couple weeks of usage. Regardless of where you set the water temperature, it's going to heat the water a minimum of 25 degrees. No problem If your water comes out of the ground nice and cool. I'm in the Florida Keys and the water comes out of the ground hot. Results in a scalding hot shower. My solution is to fill my on-board fresh water tank in the morning and use your fresh water tank and on board pump to shower. Once the water was in my fresh water tank for a few hours, it cooled down and showers were fine. Like I said earlier, this won't be a problem in most of the other campgrounds I've been to.
Tank works better using my 12v water pump because it creates more water pressure than the water supply in the campground I'm currently at. Again, won't be an issue most other places. Water pressure here is very, very poor.
Both of those issues only apply for showering. For hot water for dishes and laundry, it works just fine off the low water pressure in the campground.
Propane usage is good in my opinion. I've got two 30lb propane tanks. I've got three people in the RV showering daily and handwashing and doing dishes and such. I'm using about 10% of a 30lb bottle of propane a week. You would use no propane with an electric tank, but with this unit, you can can a long, hot shower if you want.
Install is easy. Buy the correct door to install. The gas line for the old hot water tank hooked right up to this one. I had to add about 12 inches of pex to the water lines because the water input and output were on the opposite side of the old tank that was removed. 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. I removed the 110v romex going to the old tank and shut the breaker off.
So far, very happy. Hopefully I works for several years. Only time will tell.
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.
Reviewed in the United States on August 18, 2019
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.
The old tank one would run out so fast and the only way to control the scorching heat was through the use of the valves on the faucets.
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 enables you to jack up the heat if you so desire.
One thing to keep in mind, this is not a negative, it runs on PROPANE ONLY. This will not run on shore power. If this worries you, do a little research on the size of your house propane tank. Most likely you will realize, like I did, that you would be hard pressed to empty that tank anytime soon.
Top reviews from other countries
What is important to remember with these heaters is that they need consistent water flow to get the most consistent (and hot) temperature. In my case, park water is consistent at 40 PSI. The heater works well at that pressure pretty much any time of year.
In the winter, the inlet water temp is close to freezing. That means the heater has a harder time making it hotter than in the summer when the inlet water temp is warmer.
So...ideally you want less flow in the winter, and more flow in the summer. That gets you lower pressure in the winter and higher pressure in the summer.
I tend to like high water pressure so I tend to run off the pump. What I did was restrict the water flow to the heater with a flow restrictor rated at 1 GPM. I then use a Remco Aquajet pump rated at 5.5 GPM. So the pump is overkill. As such, the pump tends to cycle which means the temperature and pressure in the shower fluctuates because the pressure fluctuates. An accumulator will help smooth that out a great deal of you have a large one. Mine is 7 gallons. But it does still fluctuate.
I addressed that by adding a PWM controller to the power feed to the pump. What Pulse Width Modulation does is allow you to adjust the speed at which the pump runs. In other words, with the shower on full hot, I can adjust the speed of the pump so that it remains below the cut-out point and maintains the same pressure for the entire shower. This means the water heater sees even flow the entire time and the highest possible pressure without fluctation.
In the winter I slow the pump to 30% and in the summer I can run it at 70%. I slow it to 30% in the winter so the water stays in the heat exchanger for a longer period of time. It can be sped up in the summer because the incoming water temp is much higher.
You don't need to do anything elaborate like that. I found that if you limit the pressure to 40-42 PSI it works fine all year round. Most inexpensive pumps run at that pressure and you can easily install an adjustable water pressure regulator on your inlet and set it to the same. You should have one of those anyway.....to protect your unit from parks with very high pressure.
I do have an issue with the ECO triggering an E3 error from time to time. E3 means that the water temp in the exchanger is over 140F and it shuts down to protect you from burns. This is exacerbated by running the heater at 124F which I like.
The E3 is triggered by a thermostatic snap switch that breaks the circuit. This is a common snap disk that can be gotten on Amazon. I will try a 160F snap disk and I bet that will case it.
I like the heater. It does work. Just bear in mind, if you're not seeing the temps you think you should, or you think it's a POS, adjust the water pressure going to it to 40-42 PSI and you should find it works well. It really is that simple. Installation is also very easy.
The only reason I post my way of doing it is because I like high pressure and water temperature. Right now I have 90 PSI water pressure that fills the sink very fast with a temperature that is just scalding. In other words, perfect for me.
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.
Reviewed in Canada on July 8, 2020
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.
I was nervous knowing what our Winters could be like, but I bought it anyways. When I contacted the dealer for tips for cold weather they told me I should shut it down. Which was not an option.
When we hit zero my neighbor told me to turn on the tap and let it drip. So I did. Around -10 there was a day that I accidentally turned it off and the unit froze. I opened the hot water tap then went outside turned off the unit and with my blow dryer, heated up the unit until I could hear the water running and then turned the unit back on. As the temperatures dropped I opened the tap a little bit more until there was a steady light flow but without igniting the unit on.
FD - freeze detector comes on regularly.
Other than me shutting off the tap I've had no concerns.
As we crept up past -30 a new error code showed S2- which means the unit is struggling to ignite. At first I would just turn the tap on and then that seem to trigger the pilot light and bring heat and the unit would be fine but, then I noticed my furnace was starting to struggle. And through troubleshooting I came to learn that propane doesn't properly convert to gases when it becomes -30 or colder out.
So I wrapped my propane tank, wrapped the copper lines from the tank to my home and put a small space heater on low in my undercarriage.
So all in all, no issues with the unit it survived -40 - if you live in similar conditions the key is to keep the water running. And if you hit -30 or colder keep the propane tank insulated.
Would definitely recommend!
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.
Reviewed in Canada on November 26, 2019
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.