--- product_id: 573429703 title: "Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor" brand: "ranein" price: "¥185376" currency: JPY in_stock: true category: "Ranein" url: https://www.desertcart.jp/products/573429703-ranein-natural-gas-tankless-water-heater-4-3-gpm-100 store_origin: JP region: Japan --- # 4.3 GPM flow rate 100,000 BTU powerhouse All-round safety & anti-freeze Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor **Brand:** ranein **Price:** ¥185376 **Availability:** ✅ In Stock ## Summary > 🔥 Elevate your home comfort with endless hot water on demand! ## Quick Answers - **What is this?** Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor by ranein - **How much does it cost?** ¥185376 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/573429703-ranein-natural-gas-tankless-water-heater-4-3-gpm-100) ## 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 - • **Safety First, Always:** Anti-freeze protection down to 14°F, plus overheat, dry burn, and CO leak prevention for peace of mind. - • **Smart Seasonal Modes:** One-click presets for 4-season, kitchen, bathtub, and shower modes tailor your perfect temperature effortlessly. - • **Durable & Energy Efficient:** Oxygen-free copper heat exchanger plus advanced combustion tech means longer life and lower bills. - • **Endless Hot Water, Zero Wait:** Power through 3-4 water points simultaneously with 4.3 GPM and 100,000 BTU—never compromise on comfort. - • **Precision Temperature Control:** Adjust from 95°F to 155°F with intelligent gas-water linkage and high-temp lock for family-safe use. ## Overview The Ranein Natural Gas Tankless Water Heater delivers powerful, on-demand hot water at 4.3 GPM and 100,000 BTU, supporting multiple water points simultaneously. Featuring four intelligent preset modes, precise temperature control (95°F-155°F), and a durable oxygen-free copper heat exchanger, it ensures energy efficiency and longevity. Comprehensive safety features include anti-freeze protection, overheat and CO leak prevention, plus a clear LED display with temperature memory. Designed for indoor use with included vent pipe, this unit is a smart, reliable upgrade for modern homes. ## Description Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor | Endless hot water for whole home, 3-4 water points, 95-155F, 4 preset modes, anti-freeze, LED, vent pipe, energy saving - desertcart.com ## Features - Powerful On-Demand Heating: 100,000 BTU & 4.3 GPM for this tankless water heater gas, supports 3-4 water points simultaneously, delivers endless hot water on demand with no waiting. - 4 Intelligent Preset Modes: One-click switch for 4-season/Kitchen/Bathtub/Shower modes; 4-season auto-matches temp, kitchen defaults to 100°F, bathtub supports 50-800L volume adjustment. - Precision Temp Control: Gas-water-temperature intelligent linkage, 95°F-155°F adjustable range, high-temp lock prevents scalding, safe for kids and elders. - Oxygen-Free Copper Heat Exchanger: Enhances heat transfer efficiency, 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 14°F/-10°C 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. - 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 14°F/-10°C or unused for long to prevent pipe cracking. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C6PYS9D2 | | Best Sellers Rank | #36,946 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #57 in Water Heaters & Parts | | Brand Name | Ranein | | Capacity | 4.3 gallons | | Color | Gray-NG | | Customer Reviews | 4.1 4.1 out of 5 stars (746) | | Flow Rate | 4.3 gpm | | Heat Output | 100000 british thermal units | | Included Components | Assembly Kit x1, Tankless Water Heater x1, Use’s Manual x1, Vent Pipe x1 | | Item Dimensions W x H | 14.17"W x 22.05"H | | Item Highlight | Endless hot water for whole home, 3-4 water points, 95-155F, 4 preset modes, anti-freeze, LED, vent pipe, energy saving | | Item Type Name | tankless water heater NG | | Manufacturer | Ranein | | Manufacturer Warranty Description | 2 Year Manufacturer | | Material Type | Natural Gas | | Maximum Pressure | 116 psi | | Maximum Temperature | 155 °F | | Model Number | RH10K | | Mount Type | Wall | | Number of Items | 1 | | Power Source | Natural Gas | | Special Features | LED Display | | Style Name | Natural Gas | | Voltage | 120 volts_of_alternating_current | | Wattage | 7.8 watts | ## Product Details - **Brand:** Ranein - **Capacity:** 4.3 gallons - **Power Source:** Natural Gas - **Product Dimensions:** 14.17"W x 22.05"H - **Special Feature:** LED Display ## Images ![Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor - Image 1](https://m.media-amazon.com/images/I/51iBRnavawL.jpg) ![Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor - Image 2](https://m.media-amazon.com/images/I/31rGlb1oZzL.jpg) ![Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor - Image 3](https://m.media-amazon.com/images/I/51IL0L9ideL.jpg) ![Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor - Image 4](https://m.media-amazon.com/images/I/51o4btjVvrL.jpg) ![Ranein Natural Gas Tankless Water Heater, 4.3 GPM, 100,000 BTU, Indoor - Image 5](https://m.media-amazon.com/images/I/51jMj+AE7vL.jpg) ## Available Options This product comes in different **Set name** options. ## Frequently Bought Together - Ranein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater - HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass - CMI Inc - 3/4 Inch IPS Female Threaded Complete Tankless Water Heater Valve Kit with Pressure Relief Valve Water and Gas Connectors - Compatible with Most Tankless Water Heater Brands --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/573429703-ranein-natural-gas-tankless-water-heater-4-3-gpm-100](https://www.desertcart.jp/products/573429703-ranein-natural-gas-tankless-water-heater-4-3-gpm-100) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-26*