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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)

(4.56) 32 reviews 30+ purchased Gift Points $17

    FPS/Bank Transfer/Cash
  • HK$4,580
  • HK$3,365

Discounted price for other payments HK$3,469

Size Body: 565 x 360 x 150 mm Warranty Period 3 Year EMSD Info

The Rasonic RWH-N10RF(T)-B is a 10L constant temperature instantaneous town gas water heater designed for modern homes. Featuring a stylish smoke black slim body and rear flue design, it is equipped with a Japanese brand CPU to provide precise water temperature control and a stable showering experience.

Smart Constant Temperature Technology

  • Precise Control: The built-in advanced Japanese brand CPU monitors operations in real-time, maintaining temperature fluctuations within °C for a consistent hot water supply.
  • Efficient Heating: With a maximum rated heat input of 22 kW, it ensures instant hot water availability without long waiting times.
  • Stable Water Supply: Delivers a steady flow of 10 liters per minute (at 25°C temperature rise), meeting the daily needs of family members.

Design and Safety Features

  • Slim Aesthetics: The fashionable smoke black finish and 150 mm slim depth save installation space while adding elegance to your bathroom.
  • Safe Ignition: Utilizes a continuous pulse ignition system for stable operation, paired with a rear flue design to ensure household safety.
  • Wide Temperature Range: Supports hot water temperature adjustments from 35°C to 60°C, flexible for different seasons and preferences.

Product Specifications

  • Model: RWH-N10RF(T)-B
  • Gas Type: Town Gas
  • Flue Type: Rear Flue
  • Hot Water Supply (25°C Temp. Rise): 10 L/min
  • Hot Water Supply (40°C Temp. Rise): 6.25 L/min
  • Rated Heat Input: 22 kW (Max) / 5.5 kW (Min)
  • Minimum 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: Grade 1
  • 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

 

All installation job are covered by BBE's insurance policy, including Third Party Liability Insurance & Employees' Compensation Insurance (issued by Zurich Insurance Hong Kong).

 

 

Gas Water Heater Standard Installation Fee    
Gas Water heater $650    
Gas Water Heater standard installation include:
a. Connect Gas pipe
b. Connect Electricity
c. Connect Water pipe
Dismantle & disposal the old heater charge $100
   
       
Gas Water Heater Extra Fee List    
Site inspection (monday~friday) (No return) $200    
Only dismantle & disposal the old heater $150    
Stairs fee $30    
Installation surcharge for Tung Chung / Ma Wan area $150/$100    
Installation surcharge for Discovery Bay area $450    
Installation surcharge for Hong Kong Island $50    
REMARK      
**Installation fee table above quote is the designated contractor responsible for BBE**      
Such as by other agents or other contractors deilvery fee/installation fee will be different. For more information, please contact our inquiry      
Standard power socket be provlded by customer      
If extra installation fee is not in the installation list,need to quote.      
Location of installation are decided by customer.Any re-location after installation shall be subjected to extra charge.      

Standard installation is only applicable to residential user. No installation for shops, offices, factories and commercial clients

 

Delivery
  • Delivery: $100 per item (Waived for products with "Included delivery fee")
    a) Additional charge for Tung Chung, Ma Wan & Discovery Bay: $100 each job 
  • Additional Stair Charge for Delivery (Except village house will charge $50 for each level, All apartment or building will charge $50 for each 10 steps, below 5 steps free of charge)
    a) General appliances: $30 each
    b) Window type air conditioner: 3/4HP to 1HP $30 each, 1.5HP to 2.5HP $50 each, 3HP or above require discussion separately
    c) Split type air conditioner, refrigerator, washing machine: $50 each
  • d) Built-in oven , Built-in Steam oven,Chimney Type Hood: $50 each
  • Walking distance more than 100m : Extra fee
 
Installation Schedule
  • **Installation fee table above quote is the designated contractor responsible for BBE**
  • Such as by other agents or other contractors deilvery fee/installation fee will be different. For more information, please contact our inquiry
  • Hong Kong Island (Tue,Thu,Sat) Kowloon (Mon to Sat) N.T. (Mon to Sat)

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Why Choose BBE?

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Get instant professional support via WhatsApp. From spec comparisons to dimension queries and installation questions, our expert team provides immediate answers.

100% Genuine Products

No parallel imports! All appliances are official Hong Kong distributor stock, coming with at least a 1-year original manufacturer warranty and a 7-day defective replacement guarantee.

🏆 Award-Winning Reputation

Our service quality is recognized by the industry and top brands alike. We have been honored with the Towngas TGC Sales Gold Award and Daikin’s Diamond Dealer status, alongside prestigious partner and distributor awards from Gree, Carrier, and Philips Smart Lock.

🔒 Secure Shopping & Install

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