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Ranein

Natural Gas Tankless Water Heater, Indoor Max 5.3 GPM, 130,000 BTU Instant Hot Water Heater

    • Based on 217 reviews
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Dec 9 – Dec 22
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Material Type: 5.3GPM 130,000 BTU (Indoor)


Style: Natural Gas


Features

  • Fans Placed UnderneathIt will be more secure in terms of safety, and no smoke backflow will occur. The blower has large power and can automatically adjust the rotating speed according to the change of external wind pressure and the change of water temperature to provide sufficient oxygen for gas combustion, ensuring full combustion and safer use. Low noise and longer service life
  • No Waiting RequiredUnlike 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.
  • Easy to Assemble and UseUses standard 1/2" NPT water inlet fittings and 3/4" NPT air inlets for quick installation. Its compact size of 23.15"L x 14.17" W x 5.9"H takes up almost no space. If you have any questions about installation and operation, please do not hesitate to contact us and we will serve you wholeheartedly
  • Wide Application130,000 BTU high heating capacity and maximum 5.3 GPM. It is suitable for 3-5 outlet points, which can satisfy whole family
  • NoteWe provide a 2-year warranty for the water heater. If you encounter any issues, please contact us. In cold weather, if the water heater is not used for a long time, the pressure relief valve needs to be opened to drain the remaining water in the water heater. Not recommended for areas over 2,000 feet.

Brand: Ranein


Product Dimensions: 14.17"W x 23.15"H


Special Feature: Fans Placed Underneath


Color: Gray


Voltage: 120 Volts (AC)


Manufacturer: RANEIN


Brand: Ranein


Model Number: RH13K-NG


Item Dimensions W x H: 14.17"W x 23.15"H


Item Weight: 35 Pounds


Capacity: 5.3 Gallons


Material Type: 5.3GPM 130,000 BTU (Indoor)


Style Name: Natural Gas


Color: Gray


Heat Output: 37940 Watts


Mounting Type: Wall


Is Electric: No


Voltage: 120 Volts (AC)


Maximum Temperature: 149 Degrees Fahrenheit


Power Source: Natural Gas


Additional Features: Fans Placed Underneath


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 9 – Dec 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • I love this water heater!!
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Propane
The media could not be loaded. 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 ... show more
Reviewed in the United States on August 23, 2024 by Jessica williams
    • Working Great!!!
Review Image by Kim Jackson Kim Jackson
The media could not be loaded. We received the tankless water heater quickly and in perfect shape. Was easy to install and worked great right away. The unit provides hot water for shower and other appliances simultaneously. Really great tankless water heater with a great price!
Reviewed in the United States on November 9, 2024 by Kim Jackson Kim Jackson
    • Good design, good customer service
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Propane
It's a nice unit. Less loud than our friend's. I like the design where it doesn't use all the burners when it doesn't need them. Zero smell or bad air from this thing, which is the primary reason we switched to tankless. Yes, less propane use as well. It says not recommended over 2000' but it seems fine at 6300' here. We are returning because it takes almost a full open bathroom sink tap to get this to start up. Customer service said this was not adjustable by user or maker. It takes 2.5-3 liters a minute to start. They should make it 1 liter, no downside to doing so. They said the 80k starts up at a lower flow. We might try that. I will research again because I think I saw another brand that had that feature adjustable. And we are interested in one that has the air feed to the burners from outside. This one pulls air from the room, which means cold or warm air must come in from outside (and not directly to the burner). Because of the small copper pipes inside, our water pressure at the shower was halved from before. Another feature we will look into for the replacement. Nice unit, heats up very fast, looks cool, screen works fine, not much adjustment available. ... show more
Reviewed in the United States on August 24, 2024 by Pw Henderson
    • Great Water Heater, Great Value
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Natural Gas
I replaced my 14 year old, 40 gallon water heater with this tankless water heater. Installed it my self using the 42 page installation instructions available on line from the seller. Venting requires category 3 stainless steel 3 inch hardware which is readily available on line but rather expensive. However any tankless water heater would have the same requirement because of the high BTU requirement. The vent pipe which comes with the unit has very limited application. The mounting hardware which comes with the unit is not practical unless you are mounting to a tile or masonry wall. I used a couple of 1x 4 boards that I ran horizontally and attached to the wall studs with lag bolts and then used short lag bolts to mount the unit to the boards. Installation was relatively easy; connected gas using a flexible gas line ( make sure it is rated for 100,000 BTUs). I recommend you use a polyphosphate water filter ( available from Amazon for $80) in line with the input water line to reduce scale problems that can occur with hard water. I really like the display feature of the unit. It shows actual water temperature as well as set temperature, water flow rate, and gas consumption rate. It is a great feature. I am using the unit in a house with 3 full baths and 3 adults. 2 people can shower at the same time and there is still adequate water for the kitchen. The 4.2 gpm flow rate is adequate for us. The unit does a good job of maintaining a constant temperature. I have the unit installed in the garage. It is relatively quiet and I don’t hear it running in the house. The exhaust fan is very quiet; the loudest sound is just the water running thru the unit. I highly recommend this tankless water heater. ... show more
Reviewed in the United States on February 27, 2024 by MCS
    • Efficient
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Natural Gas
Review Image by tbonetone tbonetone
Replaced old 40 gallon water heater. Added more space for future cabinet. Also never ending hot water. Consistent hot water. Easy installation. Like the digital panel. Only negative is inlet and outlet was 1/2" npt. Should have been 3/4" npt. All standard water supply hook ups to and from a water heater tank are 3/4" npt. When you reduce to 1/2" and go back to 3/4" you lose water pressure. ... show more
Reviewed in the United States on August 7, 2024 by tbonetone tbonetone
    • Quick delivery, easy installation
Material Type: 4.3GPM 100,000BTU (Indoor) Style: Propane
We had the unit within a few days, and sooner than promised. We had an issue during installation, unrelated to the water heater, and their customer service was very helpful in resolving our issue and getting us up and running. Where we installed it, it is in plain site and it looks very good where it’s mounted. Plus, it performs as expected! We recommend Ranein, primarily because of their customer service, as good service is always a thin promise. ... show more
Reviewed in the United States on November 8, 2024 by Joanne L.
    • Great product!
Material Type: 3.6GPM 80,000BTU (Indoor) Style: Propane
This hot water heater is great! We installed it ourselves without difficulty. It provides on demand hot water for our household of four easily. It was also so much more affordable than the traditional propane hot water tank we removed.
Reviewed in the United States on November 2, 2024 by Jenn

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