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Propane Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater

  • Based on 343 reviews
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Availability: In Stock.
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Arrives Monday, Sep 29
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Material Type: 4.3GPM 100,000BTU (Indoor)


Style: Propane


Features

  • Performance: The on-demand tankless water heater boasts a heating capacity of 100,000 BTU and a hot water flow rate of 4.3 gallons per minute (GPM). It can provide continuous hot water for 2-3 water supply points, making it sufficient to meet the hot water needs of a household's bathroom, kitchen, and bar area.
  • Upgrade features: Four Seasons Function: Automatically adjust the water temperature output based on the seasonal water temperature changes. Kitchen Function: Default water output temperature is 100F, suitable for kitchen use. Bathtub Function: Adjustable water output quantity with a reminder when the set output quantity is reached, catering to various environmental needs.
  • No Waiting Required: Unlike traditional tank water heaters, tankless water heaters eliminate the need for a 30-minute preheating wait time, allowing you to have unlimited hot water on demand.
  • Recommendation: We strongly advise that all installations of the device adhere to local building and plumbing regulations at the installation location, and should be carried out by licensed professionals. Not recommended for areas over 2,000 feet.

Brand: Ranein


Product Dimensions: 18.89"W x 8.85"H


Color: Gray


Voltage: 120 Volts (AC)


Maximum Flow Rate: 4.3 Gallons Per Minute


Brand: ‎Ranein


Product Dimensions: ‎18.89"W x 8.85"H


Color: ‎Gray


Voltage: ‎120 Volts (AC)


Maximum Flow Rate: ‎4.3 Gallons Per Minute


Maximum Temperature: ‎149 Degrees Fahrenheit


Efficiency: ‎High Efficiency


Mounting Type: ‎Floor


Is Electric: ‎No


Manufacturer: ‎RANEIN


Item Depth: ‎13 inches


Item Weight: ‎28.3 pounds


Item model number: ‎RANEIN-43GPM-100KBTU


Size: ‎mid


Included Components: ‎Tankless Water Heater x1, Use’s Manual x1, Vent Pipe x1, Assembly Kit x1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: May 31, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 29

This item is non-returnable:

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


  • Great water heater. Highly recommend.
Great product. It’s been 4 months or so since install and it’s working perfectly. Two showers+laundry+ 2 sinks running all at same time and keeps it at the temperature all day long. It heats up 75°F to 120°F in roughly 5-7secs. Super fast. Propane is really expensive here at Hawaii. This’ll save us a lot of money. One small thing is the installation instructions aren’t that great. And it didn’t come with the top bolt/screw thing it tells you to use to hook it on first. Just wall screws and anchor. Ended up not using it. Just bolted it to a 2x4 I installed on the wall. Much easier and more sturdy like this. Other than that installation is straight forward. ... show more
Reviewed in the United States on July 14, 2025 by KK KK

  • Optimistic about price, impressed by quality.
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Natural Gas
Great price for what you get. Installation was easy. Like everything you buy, the heater doesn't come with everything you need. Every Installation will be different from application to application. I would suggest the Installation be done by a qualified technician/experienced plumber. There is no difference in water flow or pressure. The unit is fairly quiet during operating and silent when not in use. The water heats up very quickly within just 30 seconds to the tap. Shower was nice and hot the entire time. No fluctuations in temperature at all. Great upgrade to your home!!! ... show more
Reviewed in the United States on July 24, 2025 by Erik Sager Erik Sager

  • Great for the $. Well worth the expense.
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Natural Gas
Surprised. It works great in our 2-person home. It is reliable and isn't overly complicated. I had purchased a $1000 unit from Lowe's and it was so complicated, if you sneezed near it during installation, it would throw an error code. This one is less than half that price and is plug-and-play. It effortlessly supplies hot water to laundry/dishwasher and to someone in the shower simultaneously without issue. I own rentals and have purchased 4 of them now and will buy a 5th. ... show more
Reviewed in the United States on July 10, 2025 by Maria Castleberry

  • Great after sales support
Material Type: 3.6GPM 80,000BTU (Indoor) Style: Propane
We have a really nice bathroom for a hipcamp operation but there was no practical way to get hot water to it. I was amazed at how many people took cold showers, so I set to solve that. This water heater is awesome it works very well, the showers are plenty hot, and we have a lot of happy campers. We raised the overnight stay rate from $28 to $34 / night and peopel are happy to pay a bit extra for a shower, and they stay longer. The small investment in the heater will pay off in the end. We had a leaky pressure relief valve. I tried all the customary fixes to stop the steady small drip, but sent a note to the compay. In the interim, I went to Home Depot, grabbed a new relief valve and installed it. I sent a copy of the invoice to the seller and they refunded the cost to our account. It's hard to beat that. All in all a good product for a fair price. We're very happy. ... show more
Reviewed in the United States on July 25, 2025 by Thud

  • Pretty easy
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Propane
So far so good. Takes a few minutes to get hot but is an acceptable time frame.
Reviewed in the United States on July 21, 2025 by Kindle Customer

  • going cold
have had this for a year, after being replaced once, it still has this problem: when water pressure is low, or when you try to balance it for lukewarm water, it goes cold. also at low pressure, or being set to low pressure it also stays or goes cold. in the shower it will go cold if someone tries to use hot water at another station. has anyone else had this kind of problem? I'm going to call to see if warranty will cover it, but am really interested if anyone else has had this going cold problem. ... show more
Reviewed in the United States on July 17, 2025 by Amy Revilla

  • Very efficient
Material Type: 3.6GPM 80,000BTU (Indoor) Style: Natural Gas
Wow is all I can say ! Lowered my gas bill ! Takes up so little room. Easy to install. The only disadvantage is that it takes a minute to get hot water. The pluses out weigh the negatives
Reviewed in the United States on July 15, 2025 by Judy

  • Great water heater
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Natural Gas
This is a great water heater. Installation was easy. The water flow is sensitive is excellent. It turned on every time hot water was needed. Even with a low amount of hot water flowing, it turned on within a couple of seconds.
Reviewed in the United States on August 2, 2025 by Robin W

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