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Rasonic RWH-N10RF(T)-B 10L Instantaneous TG Gas Water Heater (Back-flue) (Black Matte)

Rasonic RWH-N10RF(T)-B 10L Instantaneous TG Gas Water Heater (Back-flue) (Black Matte)

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  • $4,580
  • HK$3,365

Discounted price for other payments HK$3,469

Size 565 x 360 x 150 毫米 Energy Label Grade 1 EMSD Info

The Rasonic RWH-N10RF(T)-B is a 10-liter constant temperature instantaneous town gas water heater designed for modern homes. Featuring a stylish smoky black slim body with a depth of only 150mm and a rear flue design, it is equipped with a Japanese brand CPU to provide a stable and precise bathing experience.

Intelligent Temperature Control

  • Precise Temperature Control: Built-in Japanese brand CPU monitors operation in real-time to control water temperature differences, ensuring a consistent and comfortable shower.
  • High-Efficiency Heating: Features a maximum rated heat load of 22 kW, providing instant hot water without long waiting times.
  • Stable Water Supply: Delivers a steady flow of 10 liters of hot water per minute (at 25°C temperature rise) to meet daily continuous usage needs.

Design and Safety Features

  • Slim and Stylish Design: The smoky black body is only 150mm deep, saving installation space and blending perfectly with bathroom decor.
  • Safety Ignition System: Utilizes a continuous pulse ignition system for reliable operation, combined with a rear flue design to ensure home safety.
  • Wide Temperature Range: Supports hot water temperature adjustment from 35°C to 60°C to suit different seasons and personal preferences.

Product Specifications

  • Model: RWH-N10RF(T)-B
  • Gas Type: Town Gas
  • Flue Type: Rear Flue
  • Hot Water Supply (25°C Rise): 10 L/min
  • Hot Water Supply (40°C Rise): 6.25 L/min
  • Rated Heat Load: 22 kW (Max) / 5.5 kW (Min)
  • Minimum Operating Water Pressure: 20 kPa
  • Dimensions (H x W x D): 565 x 360 x 150 mm
  • Net Weight: 13 kg
  • Power Supply: AC 220V ~50Hz (Power Consumption 25W)

Energy Label Information

  • Energy Label Grade: 1
  • Place of Manufacture: China
  • Gas Type: Town Gas
  • Thermal Efficiency (%) at 100% Load Condition: 93.0
  • Thermal Efficiency (%) at 50% Load Condition: 93.5
  • Rated Heat Input (kW): 22.0
  • Measured Heat Input (kW): 23.4


The product information above is for reference only; everything is subject to the brand's official website.

Rasonic RWH-N10RF(T)-B 10L Instantaneous TG Gas Water Heater (Back-flue) (Black Matte) Review

Mr. Cheung 30/09/2025

屋企裝修完,揀咗呢部煤氣爐,個煙墨黑 design 真係好襯我個新廁所。最緊要係個恆溫功能,依家幫小朋友沖涼唔再怕會突然過熱或者變凍水,全家都用得好放心。

K. Y. Lam 31/07/2025

舊嗰部成日忽冷忽熱,忍咗好耐。換咗呢部真係life-changer,個恆溫功能非常準,話幾多度就幾多度,聲稱用日本CPU果然唔同啲。送貨都準時。

Em*****m 16/02/2026

As a first-time homeowner, choosing appliances was stressful. This one is great. The constant temperature is a feature I didn't know I needed. Feels safe and reliable. No regrets.

Kelly & Ben 21/08/2025

Love the slim profile and the smoky black colour, it gives our bathroom a very modern aesthetic. The water heats up instantly, so no more waiting around. Performance is excellent.

Mrs. Ho 30/12/2025

見佢寫住智慧節能,希望真係慳到煤氣費啦。恆溫幾好,唔會再一邊沖一邊調較浪費水。個樣黑色幾靚,唔似以前白色咁易變黃。

T. C. Wong 11/02/2026

買之前有問過CS關於背出式安裝問題,解答得好專業。部機10公升/分鐘出水量夠我哋一家三口用。恆溫控制準確,very solid product。

Ah****g 13/02/2026

整體OK,出熱水快又夠穩定。唯一要彈嘅係點火下下都「噠」一聲幾大聲,有時屋企人夜晚沖涼會嚇一嚇。如果可以靜啲就好。

Be*y 14/08/2025

The smoky black finish is very premium, much better than the usual white plastic ones. It really elevates the look of my bathroom. Slim profile is a huge plus. ✨

T. C. Wong 03/07/2025

舊嗰部壞咗先換,呢部CP值好高。送貨快,恆溫穩定,以呢個價錢嚟講非常唔錯,解決咗以前成日水溫唔穩定嘅問題。

Mr. Li 17/06/2025

Bought this for my rental property. The 3-year warranty is a key selling point. Price is reasonable and Rasonic is a reliable brand.

Mrs. Lam 30/10/2025

終於換咗個爐,最大感受係個恆溫功能,慳返好多功夫。機身夠薄,裝完個廁所睇落都大啲。👍

Ah**n 24/11/2025

部機OK啦,恆溫係幾好,不過可能我屋企水壓問題,有時覺得出水唔夠猛。但都好過舊嗰部。

Eric 30/01/2026

Sleek design, the digital temperature display is accurate and easy to use. Heats up super fast. Solid performance.

Mr. Cheung 07/08/2025

The digital display is clear and the operation is straightforward. A good, reliable unit for the price.

Vi*******n 28/10/2025

個煙墨黑色好有質感,好靚。操作簡單,出水穩定,沖涼真係一種享受。✨

Installation

Gas Water Heaters

Standard Installation Charges

ItemCharge
Install gas water heaterHK$650
Remove and dispose of old unit during installationHK$100
Site inspection (non-refundable; not available on Saturdays)HK$200
Standalone removal of gas water heaterHK$200
Staircase fee (per floor)HK$30
Discovery Bay installation surcharge (per order)HK$450
Tung Chung installation surcharge (per order)HK$100
Park Island installation surcharge (per order)HK$100
Hong Kong Island installation surcharge (per order)HK$50

Note: Standard installation includes gas hose, water pipe and electrical connections. Standard installation applies to residential customers only.

Delivery Charges

Basic Delivery

ItemCharge
Delivery (per item)HK$100
Tung Chung, Ma Wan and Discovery Bay surcharge (per delivery)HK$100
Carrying distance to delivery location exceeds 100 mAdditional charges apply

Note: Charges may differ if delivery is arranged by an agent. Please contact us for details.

Staircase Handling

Except for village houses, where 14 steps count as one floor, other buildings count 10 steps as one floor. The first 5 steps are free of charge.

ItemCharge
General appliancesHK$30 / item / floor
Window AC, 3/4 HP to 1 HPHK$30 / item / floor
Window AC, 1.5 HP to 2.5 HPHK$50 / item / floor
Window AC, 3 HP or aboveTo be discussed
Split AC, refrigerator, washing machineHK$50 / item / floor
Built-in oven, steam oven, chimney hood, built-in / freestanding dishwasherHK$50 / item / floor

Note: Charges may differ if delivery is arranged by an agent. Please contact us for details.

General Notes

  • The above installation fees are quoted for work handled by BBE’s appointed contractor / appointed registered electrical contractor.
  • Charges may differ if delivery/installation is handled by other agents or contractors. Please contact us for details.
  • A compliant power supply must be provided by the customer near the appliance.
  • Items not listed in this fee schedule must be discussed with the technician.
  • The installation location must be confirmed by the customer. Relocation or reinstallation after installation at the customer’s request will be quoted separately.
  • Installation schedule: Hong Kong Island (Tue, Thu, Sat); Kowloon (Mon to Sat); New Territories (Mon to Sat).
  • Delivery coverage excludes outlying islands, restricted areas and overseas locations.
  • Delivery or installation is generally arranged during office hours. For non-office hours such as evenings or public holidays, please check feasibility in advance.

Why us?

Why Choose BBE?

The trusted choice for more than 300,000 households in Hong Kong. We focus on exceptional quality, professional guidance, and a more peace-of-mind shopping experience.

Multiple Large Showrooms

Experience in person · Compare on the spot

Visit our flagship showrooms in Mong Kok, Causeway Bay, and Tuen Mun. Explore more than 1,000 European, American, and Japanese kitchen appliances, and get on-site recommendations from professional advisors for selection and installation.

Real Customer Service · Dedicated Follow-up

Order confirmation · Peace of mind follow-up

Each order is handled by a dedicated team who contacts and confirms details to ensure smooth delivery and installation. You can also reach real customer service via WhatsApp anytime.

1-to-1 Expert Consultation

Instant support · Professional answers

Get real-time professional support via WhatsApp. Whether you need help comparing appliance specifications, checking dimensions, or answering installation questions, our expert team will respond promptly.

100% Official Stock

No parallel imports · Clear warranty coverage

All appliances are official products from the Hong Kong总代理. Enjoy at least one-year manufacturer warranty and a 7-day replacement guarantee for faulty items, for added peace of mind after purchase.

Award-Winning

Recognized by brands · Valued service

Our service quality is recognized by the industry and top brands. We have received the TGC Sales Gold Award from the Gas Company and Daikin’s Diamond-level “Daikin Star” honor, along with multiple partner awards and distributor recognitions.

Safe Shopping · Professional Installation

One-stop service · More peace of mind

Our website uses SSL encryption, supports multiple electronic payment methods, and provides a one-stop professional delivery and installation service, making the entire shopping process more convenient and reassuring.

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