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Availability:
19 left in stock
Arrives
Wednesday, Nov 4
At a glance
- Condition
- New
- Set
- 4.3GPM LPG
- Model
- RANEIN-43GPM-100KBTU
- Capacity
- 4.3 gal
- Dimensions
- 14.17"W x 22.05"H
- Color
- LPG
- Material
- Propane
- In the box
- Assembly Kit x1Tankless Water Heater x1Use’s Manual x1Vent Pipe x1
Features 7
- Powerful On-Demand Heating: 100,000 BTU & 4.3 GPM for this tankless water heater propane, supports 3-4 water points simultaneously, delivers endless propane hot water on demand with no waiting.
- 4 Intelligent Preset Modes: One-click switch for 4-season/Kitchen/Bathtub/Shower modes on the propane tankless water heater; 4-season auto-matches temp, kitchen defaults to 100F, bathtub supports 50-800L volume adjustment.
- Precision Temp Control: Gas-water-temperature intelligent linkage for the propane heater, 95F-155F adjustable range, high-temp lock prevents scalding, safe for kids and elders.
- Oxygen-Free Copper Heat Exchanger: Enhances heat transfer efficiency of the propane hot water heater, corrosion-resistant and durable; paired with enhanced combustion tech for energy saving.
- All-Round Safety & Anti-Freeze Protection: Equipped with dedicated anti-freeze device, resists 14F/-10C low temperature to effectively prevent pipe freezing and cracking; plus overheat, dry burn, exhaust blockage and low water pressure startup protection; powerful fan exhaust prevents CO leakage.
- Clear LED Display & Temp Memory: LED screen shows real-time water temp, operating status and fault codes; temp memory retains preferred settings, no repeated adjustment needed for the propane tankless heater.
- Included Vent Pipe & Installation Note: Comes with original vent pipe (no extra purchase) for the indoor propane tankless water heater. Install by licensed professionals, not for >2,000ft elevation. Recommend draining water completely if temp drops below 14F/-10C or unused for long to prevent pipe cracking.
Specs 25
| Brand | Ranein |
|---|---|
| Capacity | 4.3 gallons |
| Power Source | Liquid Propane |
| Product Dimensions | 14.17"W x 22.05"H |
| Special Feature | Four Seasons Function, Kitchen Function, Bathtub Function, No Waiting Required |
| Special Features | Four Seasons Function, Kitchen Function, Bathtub Function, No Waiting Required |
| Voltage | 120 volts |
| Flow Rate | 4.3 gpm |
| Maximum Temperature | 155 °F |
| Heat Output | 100000 british thermal units |
| Maximum Pressure | 116 psi |
| Mount Type | Wall |
| Item Dimensions W x H | 14.17"W x 22.05"H |
| Item Depth | 13 inches |
| Material Type | Propane |
| Item Highlight | Endless hot water for whole home, 3-4 water points, 95-155F, 4 preset modes, anti-freeze, LED, energy saving |
| Brand Name | Ranein |
| Model Number | RANEIN-43GPM-100KBTU |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Manufacturer | Ranein |
| Manufacturer Warranty Description | 2 Year Manufacturer |
| Item Type Name | tankless water heater LPG |
| Color | LPG |
| Style Name | Propane |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Nov 4
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
DIY , watch your gas consumption go down
Set name: 3.6GPM NG
This product is what it says it is natural gas hook up 80,000 BTUs this unit is good enough to run laundry machine. I full bath in a few minutes. Endless shower approximately 123° perfect. The unit is very self-sufficient and remember to buy the connections they provide. Other than hooking it up to your waterlines in lit outlet very easy to follow instructions. FYI DIY compatible and do follow airflow instructions and don't forget about the bladder tank if you don't have one you'll definitely need if you have bladder water bad water pressure. Then after hooking up the natural gas line 2 unit double check for leaks you spray bottle with a little bit of dawn dish soap or dish liquid spray and watch for bubbles if no bubbles you are OK. Plug-in unit 120 outlet close by with a GFI do note that GFI should be on one breaker instead of existing plug. no need for wiring since it has a plug itself built in. Fits any exterior wall double chuck waterlines turn unit on by faucet automatically starts warming water. I hope this little review helped you out enjoy your blessed day , future pictures coming soon
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Reviewed in the United States on May 24, 2026 by Jay
I love this water heater!!
Set name: 4.3GPM LPG
2nd edit!—— it’s been almost a year and want to say through the winter I was almost certain it was going to be broken with the water frozen even inside the house, we had issues with the gas company (propane) blot being able to come fill so we went without heat off and on all winter, we ended up just filling a 100lb cylinder every 2 days 😳 it was expensive. But during the times we didn’t have heat and inside froze my fridge broke, (water and ice don’t work) all shut offs busted when we got heat and water thawed. But the shut offs to this didn’t! And it didn’t break! We’re still going strong and still working properly 🙌🏻 Editing to update, it’s now been about 3 months and I love this so much! Bills went down about 100$ and it’s just perfect! I got this about 3/4 weeks ago it’s been installed 3 weeks or so. My dad installed and I was helping. It was easy to install and hook up. The packaging comes with everything basically, you need to hook up. I’m pretty sure we had to buy the shut offs. But either way it’s cheap and works great. I have 5 kids almost 6-11 years old plus 3 adults. So far no problems with it heating and keeping temperatures. It’s quiet and definitely space saving!!! So now I can use the bathroom closet instead of having a big tank taking up all the space. This is the propane not natural gas. Sorry for the long video review but wanted to let people to know some details cause I was hesitant my own self after reading some of the reviews. Questions for will it work or not work cause I was told by Lowe’s a few years ago I need a 9-11gpm for the people I have in household. It’s actually by faucets and the rating they have and how many you have and want running at the same time. So I bought all my fancy faucets (waterfall, rain shower head) etc from Amazon as well and they do take a good bit of water output so I just checked the output and f it, let’s give this a try. My main concerns was the reviews like “I got propane but it won’t work it’s only for natural gas” or “it leaks upon installation or after a few days” I’ve had it for almost 3 weeks and it’s been good to us no leaks nothing. I’d definitely recommend this tankless heater
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Reviewed in the United States on August 23, 2024 by Jessica williams
Very Disapointed
Set name: 3.6GPM LPG
owned 9 months and started to fail after 8 months of use. First started to change temp randomly then display started flickering. Now display will accept any input and only goes to 109 degree (F) max. website claims 2 year warranty, sent request for support and parts 3 days ago and not heard a peep. This is the first product review Ive ever left, you spend $300 on something and you expect it at least live up to the warranty period. If Ranein wants to make it right I'll entertain chaining my review but until then save your money and buy local.
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Reviewed in the United States on September 17, 2026 by TK
Good quality at good price
Set name: 4.3GPM LPG
So far it works well and the exhaust installation was simple. Extensions are available. The heater is responsive to even small flows. It responds to increases in flow by increasing the heat so the temperatures do not fluctuate. The connections are 1/2”, requiring finding 3/4 adapters if going with the usual flushable install kit. The threading is not NPT tapered so the adapter should have a stop with washer, but many layers of tape or the horse hair method works with a standard reducer. There is no remote available, after every power down it defaults to 129°f, so it needs a convenient location to put it back to the temperature you want if it is higher. 149 is max which is what works for us. Make certain you pick the right gas, they are not changeable and not returnable. Amazon refunded me and I got two for the price of one. I found someone to donate the LP version to. We used the 4.2 gpm version for a single bathroom apartment. More than enough for multiple water draws simultaneously.
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Reviewed in the United States on July 1, 2026 by Daniel Huntsinger
Satisfied so far !!!!
Set name: 3.6GPM NG NEW
This water heater was easy to install. I used the template that came with the unit, worked well. It takes about 40 seconds to get hot water other than that it works well.
Reviewed in the United States on September 4, 2026 by Jerry L. Althiser
Great heater
Set name: 5.3GPM LPG Outdoor
The Ranein water heater is working great, I have had it for about a month and a half what a change the old electric water heater if you took a shower you had better be done in 10 minutes or it turned cold, with the Ranein you can stay in shower as long as you want too, wife was running hot water in the kitchen, washer doing a load of laundry and me in the shower I felt no difference in water temperature, so happy with this heater, well worth the process of changing from electric to propane, installed be myself other than the propane hooked up by the propane company!
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Reviewed in the United States on July 29, 2026 by Amazon Customer
It works well
Set name: 3.6GPM LPG
Got this installed yesterday by a local handyman to replace my old electric water heater. I cranked it up to 140 f on a medium propane tank. Got great heat coming through also immediately… 10 -15 seconds to reach the closest faucet. Now the interesting and strange part is this heater has an electric cord. Other portable propane on-demand heaters have a battery. That was unexpected but luckily I had the box, plug, and face plate and power source I plan to eventually connect to my stationary gas tank but I will get the propane company to do that part. The heat release makes a 90 degree turn to go out the wall instead of through the ceiling So far so good
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Reviewed in the United States on October 6, 2026 by Purple
I like it so far.
Set name: 8.5GPM LPG
This replaces a Bosch quasar that served me well beyond its expectancy. So I can’t rate the quality as that is to be determined, but it is a nice looking unit. I was able to install without much modifications. The vent is a little further from the wall, and I had to add a length of tubing for the LP, but it came with the right fittings to match what I had. The digital readout and control is nice. I hope the annual operating cost is if the unit is running continuously.
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Reviewed in the United States on August 24, 2026 by The5fours