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At a glance
- Condition
- New
- Style
- Liquid Propane
- Model
- i12-lp
- Dimensions
- 14"W x 26"H
- Weight
- 29 lb
- Color
- Black
- Material
- Tempered Glass
- In the box
- Horizontal VentingInstallation HardwareInstruction Manuali12-LP Tankless Water heater
Features 5
- Whole home indoor, gas powered tankless water heater, rated at 4 GPM that activates only on demand and no pilot light needed, reducing energy consumption
- Sleek, modern design with black tempered glass front panel featuring an easy to use LED display controls
- Features fully automatic temperature controls with an energy saving mode and child lock technology
- Safe electronic ignition system; Plugs into standard 110v electrical outlet with UL-listed cord
- Uses standard 1/2" NPT water fittings and comes with horizontal venting allowing for a convenient and quick installation
Description
The Eccotemp i12 Liquid Propane 3 GPM Tankless Water Heater has a new revolutionary design, making it unlike any other tankless water heater on the market today. The Eccotemp i12-LP is perfect for vacation cabins, cottages, and smaller homes. This model features sleek black tempered glass paneling, fully automatic temperature controls for precision, and a touch screen with an LED temperature display that shows output temperature and GPM flow. The i12-LP is also equipped with child locking technology. The Eccotemp i12-LP is a liquid propane powered, indoor model designed for small to medium hot water production where you need more than one hot water application at the same time. This model also offers a 35-40 degree Fahrenheit temperature rise when operating at a flow rate of 4 GPM and a 77-degree Fahrenheit temperature rise at 1.5 GPM. This bundle comes with a horizontal stainless steel vent kit, ready to install and with its 110-volt UL listed power cord powering the internal exhaust fan and digital display. The i12 only pulls about 2 watts while idle and 1.07 Amps during operation, making it an ideal energy efficient appliance. Product FeaturesSleek, modern design with black tempered glass front panel Equipped with child locking technology Pulls about 2 watts idle and 1.07 Amps during operation Fully automatic temperature controls Horizontal Stainless Steel vent kit included Perfect for vacation cabins, cottages, and smaller homes Hot water capacity range: 0.6 - 4.8 GPM; Maximum / Minimum gas rate: 25,000 - 80,000 BTUs What’s in the box?1 x 2 1/2" 90 degree Elbow with Backflow Preventer 1 x Wall Thimble 1 x 2 1/2" x 20" Termination Pipe 1 x Instruction Manual 1 x 110 volt UL listed power cord
Specs 24
| Brand | ECCOTEMP |
|---|---|
| Power Source | Liquid Propane |
| Product Dimensions | 14"W x 26"H |
| Color | Black |
| Wattage | 122 watts |
| Voltage | 120 volts |
| Flow Rate | 3.98 gpm |
| Maximum Temperature | 140 °F |
| Heat Output | 2 watts |
| Mount Type | Wall |
| Item Dimensions W x H | 14"W x 26"H |
| Item Weight | 29 pounds |
| Material Type | Tempered Glass |
| Style Name | Liquid Propane |
| Brand Name | ECCOTEMP |
| Model Number | i12-lp |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Manufacturer | Eccotemp |
| Manufacturer Warranty Description | 2 Year Limited Manufacturer Warranty |
| UPC | 891876002614 |
| Global Trade Identification Number | 14 |
| Item Type Name | water heater |
| Manufacturer Part Number | I12-LP |
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Frequently asked questions
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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
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View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Looks awesome, sounds good, works for our 4000 square ft home.
Style: Natural Gas
Call me crazy, but I installed this in a 4000 square ft home with 4 bathrooms. It is just 3 of us though. So I think I can answer some questions people have in a larger home. I gave this thing 4 stars originally because of the lower power, but then UPDATED moved to 5 stars since it does so well for us. It looks awesome, sounds good, small, light weight. Most people in reviews talk about showers. Well our household take primarily baths. For filling a bathtub, you need to play with the settings. At 48 degree F water here in MI, I found turning water heater down to 1.5 gpm works. I set the temperature at 131 degrees at the water heater. By the time it gets to my huge Jaccuzzi, it goes down to 115 degrees. That is hot, so I was able to add a tiny bit of cold and got a Jaccuzzi tub full at 97 degrees in about 30 minutes. Not too bad. Plus it is hotter and can fill to any higher level than my previous 50 gallon water heater. Next test, a regular small bathtub, but at the far end of my house. The water lines run through the garage ceiling. By the time it gets there, it is at 106 degrees and takes about 10 minutes to fill the tub. This small tub actually was the hardest to get just right. Originally I had the water at 2.4 gpm, and it was fine for the big tub, but terrible for this far smaller tub. This is why I set the flow to 1.5 gpm right at the water heater. I think I will just leave it there, rather then keep having to adjust. Ok, 1.5 gpm is really low and 2 people cannot fill a tub at the same time, but it works for us and you can fill the 2nd tub immediately after. For your closer bathrooms, you can get a bit more gpm by adding some cold water. We had a 50 gallon direct vent gas water heater. This was not perfect either. We could never get more than 1/2 a tub before cold water started coming out. So even though this tankless water heater takes a longer time to fill a tub, it can keep going until it is full. So we just set the timer on the Jaccuzzi to 20 minutes and then come back and check on it. Compromises but the benefits are how efficient it is, how it never runs out of hot water, and since it is lower power, it has to be safer. It is safer than having a tank, that is for sure. Check water heater mythbusters on yout. So I am not necessarily recommending someone with a 4000 square ft house to buy this. Although for a conservative family that has no problem with compromising a little time for filling a tub for efficiency, you can definitely get by. Next test, faucets. You can run 2 faucets at the same time at my settings. I imagine at 2.5 gpm maybe 3 faucets but I do not want to keep changing the flow rate. I really love the touch screen and the looks are nice. Btw plan on a dozen trips to buy pipe parts. I also bought more exhaust vent. The exact same. Basically China makes these vent kits the exact same size so I can extend mine. Under 20 bucks online. Also plan on spending another 300 bucks on pipe parts. This is because you have to get the pipes from where your tank water heater was to where your tankless water heater is. I think it is worth it. It will save $250 a year. Btw, it felt good getting rid of that big bulky and ugly tank water heater. 7/6/2017 Update: I just want to add that as the summer comes, I was able to lower temperature on the water heater to 113 degrees. So in the summer this thing has extra capacity available. I still just leave it at 1.5 gpm. Use of this water heater has become normal for us.
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Reviewed in the United States on March 29, 2017 by Solarx.110mb
Hot water at the temperature you set
Style: Liquid Propane
This is a fantastic water heater. Very easy to use. Allows you to set the temperature you want and delivers it quickly. Automatically shuts down with no water flow. No manual lighting required. Looks great. Note: the photo shows the unit mounted but the propane line is not yet installed.
Reviewed in the United States on August 14, 2025 by Rich K Rich K
My second unit...FROZE too. Thought it was all my fault until I opened the unit up.
Style: Liquid Propane
Update ony last review. This is my second unit and the second one that burst. I've lowered my rating to a 1 star. I thought the units burst from freezing...but now I'm not sure. I took this unit apart and found that in the water coils on the top right side (by temp sensor) there are two coils that bend back 180°into the heat box. These coils looked VERY grainy, like pebbled leather instead of smooth copper (besides the obvious open split) and they are PAPER thin. I STRONGLY suspect the reason they look like this is because they heat/treat or mold them to make this very tight 180° bend and used substandard copper. I took my old unit apart (I kept it) and viola...EXACT same thing. This is a VERY OBVIOUS DESIGN FLAW in these units that the company HAS to know about. I'm guessing that those of you that sprung leaks when you flushed your heater simply eroded the miniscule amount of copper on these two bends. If you still have the unit around...check it out? I was able to repair these units by using a torch and lead free solder and built the surface up about 1/8". I now have a spare unit. This unit heats water and works well...but seems to be designed to fail. I recommend that if you be smarter than me and buy a unit that has a built in heater to prevent unit from freezing and definitely don't buy this one.
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Reviewed in the United States on January 22, 2022 by LJ
Update
Style: Liquid Propane
Purchased i12-lp several months ago. I am remodeling a beach front retirment home. Installation took most of the day, running for parts ect.....Im not a spring chicken anymore....was not in a rush. Not any difference from the 50 gallon electric heater I removed (except way cheaper to use). Can easily handle a high power shower head. Wife always removes water saver. Cant do 2 showers at once, nor could 50 gallon elec. Can take as many showers or chores as you wish one after another and never run out of 140 hot water. Water temp in is about 58 degrees. Water out 140 degrees @ 1.5 GPM +-.. Please note, I am an experienced home builder of 30 plus years. Never install LP gas lines if you are not a pro. This unit works great for my wife and I and the occasional visit from kids and grandkids. I recommend it. UPDATE Purchased in 2018. Still working perfect. 5 stars. In the interest of being fully honest, One time in 5 years it had an error code. I unplugged and drained the unit. Still the error code. Then I unplugged and drained, smacked it with open had on the front, working perfect ever since....lol I stand by my first review. Buy it. Dont give into the Hype on Renni tankless.
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Reviewed in the United States on May 12, 2019 by Geo
Easy to install except for exhaust.
Style: Liquid Propane
Installed indoors. LP unit that replaced another mfgr unit. Installed now for over a year and functions without troubles. Only drawback for us is that the water temp had to be set too high (134 degrees) as we live in Florida and our well water temp is 76f. When using one shower, it is necessary to also run a sink faucet at the same time to prevent it from shutting down. Plenty of hot water for this household. With 2 retirees in family, we go through 20 lbs LP monthly. (Unit installed on softened water)
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Reviewed in the United States on May 6, 2021 by Amazon Customerggggg 12345
Easy to use
Style: Liquid Propane
Pleased with performance so far. Very easy to set or change water temperature. After having used one with knobs to control gas flow and water temperature this one is AMAZING. My residence is small, older home; this works well even with two appliances using hot water. Easy to install. Just keep in mind, it has 1/2 inch water supply connections.
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Reviewed in the United States on February 21, 2025 by BEC