Included delivery fee basic installation
✅ Authorized Good 📦 In-stock
SIMPA STW11RM 12L/min Temperature-modulated Gas Water Heater

SIMPA STW11RM 12L/min Temperature-modulated Gas Water Heater

(4.53) 15 reviews 30+ purchased Gift Points $26

    FPS/Bank Transfer/Cash
  • HK$6,260
  • HK$5,229

Discounted price for other payments HK$5,391

Mong Kok Store On Display
22/F, Island Centre, 470 Reclamation Street, Mong Kok
Mong Kok Flagship Store
G/F & 1/F, 407&409 Shanghai Street, Mong Kok, Kowloon
Tuen Mun Store
Flt 2209 - 2210, Parklane Square, 2 Tuen Hi Road, Tuen Mun
Causeway Bay Store
C&D 15/F Chinaweal Centre, 414-424 Jaffe Road, Causeway Bay
Country Of Origin Taiwan Size Body: 695 x 380 x 150 mm Warranty Period 3 Year Energy Label Level 1 EMSD Info

The SIMPA STW11RM Town Gas Constant Temperature Water Heater is a high-efficiency home appliance providing 12 liters of hot water per minute (at 25°C temperature rise), featuring advanced automatic temperature control and a safe balanced flue design.

Main Features

  • Precise Constant Temperature: Features automatic temperature control to maintain water temperature between 35°C and 55°C, ensuring a stable shower experience despite fluctuations in water pressure or flow.
  • High Efficiency Supply: Delivers up to 12 liters of hot water per minute to meet the needs of average households without long wait times.
  • Advanced Safety Design: Uses a balanced flue sealed design where combustion occurs in a sealed environment and exhaust is forced outdoors to prevent backflow.
  • Simple Operation Interface: Equipped with automatic ignition and a digital temperature display for easy control and clear monitoring of water status.
  • Compact Dimensions: Specifically designed for Hong Kong homes with a slim profile of 695 x 380 x 150 mm.

Technical Specifications

  • Brand: SIMPA
  • Model: STW11RM
  • Series: Constant Temperature Series
  • Hot Water Supply: 12L/min (25°C rise)
  • Net Weight: 18.0 kg
  • Overall Dimensions (H x W x D): 695 x 380 x 150 mm
  • Maximum Temperature Setting: 55°C
  • Minimum Operating Pressure: 20 kPa
  • Power Supply: 220V AC (50Hz)
  • Pipe Connections (B.S.P): 3/4 (Gas), 1/2 (Cold Water), 1/2 (Hot Water)
  • Exhaust Method: Balanced Flue Forced Exhaust
  • Warranty: 3-year free parts warranty service.

Energy Label Information

  • Energy Label Grade: 1
  • Gas Type: Town Gas
  • Thermal Efficiency (%) at 100% Load: 93.6
  • Thermal Efficiency (%) at 50% Load: 97.4
  • Rated Heat Input (kW): 26.2
  • Measured Heat Input (kW): 26.9


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

SIMPA STW11RM 12L/min Temperature-modulated Gas Water Heater Review

Mr. Wong 12/12/2025

屋企有老有嫩,最緊要係安全。呢部機恆溫做得好好,唔會再好似舊時咁忽冷忽熱,小朋友沖涼都放心好多。BBE師傅上門安裝都好專業 👍。

Mi****e 24/10/2025

The slim design is perfect for my small kitchen. The digital display looks modern and is very user-friendly. BBE delivery was super fast too.

K. Y. Lam 25/02/2026

恆溫功能確實穩定,但係機動排氣個風扇開機時有啲聲,雖然唔係好大但可以再靜啲。整體嚟講不過不失。

Ja*******g 05/08/2025

A solid water heater. The constant temperature control is a game-changer. No more sudden cold shocks during showers. Highly recommended.

Ah****g 11/09/2025

舊嗰部壞咗急住換,見呢部CP值幾高就試下。恆溫功能好實用,呢個價錢有咁嘅performance算係咁。😊

Mrs. Cheung 17/12/2025

Very good value for money. Has all the essential safety features and the water temperature is very stable.

Be*y 30/11/2025

Works as advertised. Hot water supply is consistent and sufficient for my family of three.

Tony 29/11/2025

The slim profile saved a lot of space in my kitchen. Works great.

李小姐 18/08/2025

12L夠用,唔使等熱水

阿明 19/01/2026

密封式設計,安心啲

小美 02/12/2025

爐身薄,慳位㗎👍

Pe*****m 07/09/2025

Fast delivery, so quick!

Ch*****o 08/10/2025

Sealed flue, very safe

Da****u 17/08/2025

Easy to use interface

Sa******g 03/12/2025

Temp control good.

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)

Why us?

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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