---
product_id: 745790948
title: "Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater"
brand: "ranein"
price: "5391.63 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Ranein"
url: https://www.desertcart.tn/products/745790948-ranein-natural-gas-tankless-water-heater-indoor-max-3-6
store_origin: TN
region: Tunisia
---

# 3.6 GPM flow rate 80,000 BTU power 4 precise temperature modes Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater

**Brand:** ranein
**Price:** 5391.63 DT
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your home’s hot water game—instant, efficient, and tailored for your lifestyle!

## Quick Answers

- **What is this?** Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater by ranein
- **How much does it cost?** 5391.63 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/745790948-ranein-natural-gas-tankless-water-heater-indoor-max-3-6)

## Best For

- ranein enthusiasts

## Why This Product

- Trusted ranein brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Inclusive Kit:** Includes exhaust pipe and assembly kit—no hidden extras, just plug and play convenience.
- • **Energy-Smart Design:** Oxygen-free copper tank minimizes heat loss, saving you money and energy.
- • **Compact & Lightweight:** Sleek indoor unit at just 8.16 kg fits seamlessly into modern living spaces.
- • **Tailored Comfort Modes:** Dish, Fruit, Elderly, and Infant settings for perfectly customized water temps every time.
- • **Instant Hot Water, No Wait:** Say goodbye to cold showers with on-demand heating that kicks in instantly.

## Overview

The Ranein Natural Gas Tankless Water Heater delivers powerful 80,000 BTU heating with a 3.6 GPM flow rate, providing continuous hot water for multiple household points. Featuring four specialized temperature modes and energy-saving copper construction, this compact indoor unit ensures instant, customized comfort while reducing energy costs. Installation is streamlined with included exhaust and assembly kits, making it a smart upgrade for modern homes.

## Description

NG tankless water heater

Review: My twenty year old 40 gallon (traditional) hot water heater finally sprung a massive leak, leading me to research LPG heaters that were available. My recollection is that the heater cost around $300 in 2005. The local big box hardware chains had heaters that began around 800 and seemed to accelerate from there. Since I live by myself, this seemed to be overkill, when I had the bright idea to look at tankless heaters. The chains had some that were even more expensive. Then, I checked desertcart. I found this 3.8 gpm / 80000 BTU heater on a black Friday price of $239, with a minor delay in delivery. For the price difference, I thought I would give it a try. I also ordered a HYDRO MASTER Tankless Water Heater Service Valve Kit (62.46) to provide fittings for the water connections. I waited a couple more days for my friend (Thank you, Andrew) to assist me in mounting and plumbing the unit in. His expertise, while not absolutely necessary, allowed me a two hour installation, with no leaks. He helped me determine additional parts necessary (PEX fittings, PEX hose, exhaust pipe and couplings available locally (around $120). (One caveat: when attaching the water valves to the unit, use teflon tape and teflon paste to seal. Do not apply too much torque when installing, it can be difficult to counter hold the connection.) All plumbed up, turned on the cold and hot water valves, plugged in the electric, turned on the LPG, no leaks. turned on the hot water spigot and the unit fired right up, I could not have asked for a better outcome. I noted on the outside of the cover, the date of purchase and the 1 year warranty. We'll see how long it lasts.
Review: Great unit, easy to install, select temperature for hot water first, then turn on tap, wait a couple seconds and there it is, hot water....we bought this for the cottage and we are very happy with it. No issues whatsoever.

## Features

- Performance: The on-demand tankless water heater boasts a heating capacity of 80,000 BTU and a hot water flow rate of 3.6 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.
- 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.
- Provides 4 modes: Dish mode(100℉), Fruit mode(95℉), Elderly mode(104℉) and Infant mode(107℉). More convenient for you to use.
- Save Money: The kit already includes the exhaust pipe, so you don't need to spend extra money on purchasing it separately. With an oxygen-free copper water tank, it reduces heat loss and lowers energy consumption. Applied with standard 1/2" NPT water fitting and gas inlet.
- 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)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CR1BTH9N |
| ASIN  | B0CR1BTH9N |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Gray |
| Customer Reviews | 4.2 4.2 out of 5 stars (590) |
| Customer reviews | 4.2 4.2 out of 5 stars (590) |
| Date First Available | 15 June 2025 |
| Date First Available  | 15 June 2025 |
| Flow Rate | 3.6 Gallons Per Minute |
| Included components | Assembly Kit x1, Tankless Water Heater x1, Use’s Manual x1, Vent Pipe x1 |
| Item Weight | 8.16 Kilograms |
| Item model number | RH8K-NG |
| Item model number  | RH8K-NG |
| Manufacturer | RANEIN |
| Manufacturer  | RANEIN |
| Material | 3.6GPM 80,000BTU (Indoor) |
| Plug Profile | Wall |
| Power source type | Natural Gas |
| Product Dimensions | 35.05 x 35.05 x 55.12 cm; 8.16 kg |
| Product Dimensions  | 35.05 x 35.05 x 55.12 cm; 8.16 kg |
| Special Features | Dry burn protection, flame failure protection |
| Style | Natural Gas |
| Voltage | 120 Volts (AC) |

## Product Details

- **Brand:** Ranein
- **Capacity:** 3.6 Gallons
- **Power source:** Natural Gas
- **Product dimensions:** 35.1W x 55.1H centimeters
- **Special features:** Dry burn protection, flame failure protection

## Images

![Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater - Image 1](https://m.media-amazon.com/images/I/51El3LpUwQL.jpg)
![Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater - Image 2](https://m.media-amazon.com/images/I/61-2Gko2ZHL.jpg)
![Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater - Image 3](https://m.media-amazon.com/images/I/71Ga50nJwUL.jpg)
![Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater - Image 4](https://m.media-amazon.com/images/I/71Gv41rL0GL.jpg)
![Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater - Image 5](https://m.media-amazon.com/images/I/71Ioc5zzpkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***S on 9 December 2025*

My twenty year old 40 gallon (traditional) hot water heater finally sprung a massive leak, leading me to research LPG heaters that were available. My recollection is that the heater cost around $300 in 2005. The local big box hardware chains had heaters that began around 800 and seemed to accelerate from there. Since I live by myself, this seemed to be overkill, when I had the bright idea to look at tankless heaters. The chains had some that were even more expensive. Then, I checked Amazon. I found this 3.8 gpm / 80000 BTU heater on a black Friday price of $239, with a minor delay in delivery. For the price difference, I thought I would give it a try. I also ordered a HYDRO MASTER Tankless Water Heater Service Valve Kit (62.46) to provide fittings for the water connections. I waited a couple more days for my friend (Thank you, Andrew) to assist me in mounting and plumbing the unit in. His expertise, while not absolutely necessary, allowed me a two hour installation, with no leaks. He helped me determine additional parts necessary (PEX fittings, PEX hose, exhaust pipe and couplings available locally (around $120). (One caveat: when attaching the water valves to the unit, use teflon tape and teflon paste to seal. Do not apply too much torque when installing, it can be difficult to counter hold the connection.) All plumbed up, turned on the cold and hot water valves, plugged in the electric, turned on the LPG, no leaks. turned on the hot water spigot and the unit fired right up, I could not have asked for a better outcome. I noted on the outside of the cover, the date of purchase and the 1 year warranty. We'll see how long it lasts.

### ⭐⭐⭐⭐⭐ Review
*by R***G on 18 September 2025*

Great unit, easy to install, select temperature for hot water first, then turn on tap, wait a couple seconds and there it is, hot water....we bought this for the cottage and we are very happy with it. No issues whatsoever.

### ⭐⭐⭐⭐⭐ Review
*by R***N on 10 October 2025*

Works great so far. Heats up a lot faster than I expected. It’s for a summer only cabin …so we’ll see how it is next summer. Despite the instructions- it doesn’t require a pressure relief valve- there is no tank to build up pressure- so don’t add one in. I needed to get an adapter to connect the propane tank to the gas inlet.

## Frequently Bought Together

- Ranein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-23*