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RASONIC RWH-CT5 20L Unvented Instant Storage (Hybrid) Water Heater (White Tempered Glass) (Right Flue)

RASONIC RWH-CT5 20L Unvented Instant Storage (Hybrid) Water Heater (White Tempered Glass) (Right Flue)

(4.63) 16 reviews 30+ purchased Gift Points $24

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+1 year(s)
$ 358
+2 year(s)
$ 488
+3 year(s)
$ 718
No Extended Warranty

Out of stock, expected to arrive in mid-April.

Size Body: 380 x 168 x 690 mm
Slim Body Depth: 168 mm
Warranty Period 1 Year

The Rasonic RWH-CT5 WH is a high-efficiency 20-litre unvented instant storage water heater designed for performance and style. With a powerful 3000W heating element and a durable stainless steel tank, this unit utilises a patented rapid heating technology to significantly reduce preheating time and deliver a stable supply of hot water. Its slim profile and elegant white tempered glass finish make it a sophisticated addition to any modern bathroom.

Key Features

  • Patented Rapid Heating Technology: Features an innovative heating system (Patent No. ZL201410248043.1) that enhances heating speed and efficiency, ensuring you spend less time waiting for hot water.
  • Slim and Stylish Design: With a depth of only 168mm and a sleek tempered glass cover, this water heater saves valuable space while adding a touch of elegance.
  • Intelligent and User-Friendly: Equipped with a clear Liquid Crystal Display (LCD) that shows the real-time water temperature, and features fully automatic temperature control for simple, set-and-forget operation.
  • Durable & Safe Construction: The inner tank is made from high-quality stainless steel, backed by a 10-year warranty. The unit is built to an IPX4 waterproof standard and includes a pressure & temperature relief valve for safety.
  • Flexible Installation: Designed with convenience in mind, it includes cable inlets on both sides of the unit to accommodate various installation environments and layouts.
  • Complete Set: Comes with a special shower head, a flexible tube, and a P&T valve for a comprehensive installation.

Product Specifications

  • Model: RWH-CT5 WH
  • Type: Unvented Type / Instant Storage (Hybrid)
  • Colour: White
  • Water Tank Capacity: 20 Litres
  • Rated Power: 3000W
  • Rated Voltage: 220V ~ 50Hz
  • Highest Temperature: 75-80°C
  • Waterproof Standard: IPX4
  • Water Supply Pressure: Max. 600kPa (6 bar)
  • Dimensions (W x D x H): 380 x 168 x 690 mm
  • Net Weight: 13 kg
  • Weight (Full Tank): Approx. 33 kg
  • Pipe Connection: 1/2"

Warranty Information

This product comes with a 1-year manufacturer's warranty and a 10-year warranty on the stainless steel water tank, ensuring peace of mind.

Specifications are subject to change without prior notice.



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

RASONIC RWH-CT5 20L Unvented Instant Storage (Hybrid) Water Heater (White Tempered Glass) (Right Flue) Review

Ca******e 22/10/2025

新屋裝修,搵咗好耐終於搵到呢款超薄熱水爐。機身真係好slim,完美fit in我哋個細浴室。白色玻璃面好靚,同我哋想要嘅簡約風好夾。BBE送貨準時,夾到師傅安裝時間,very good!

Mr. Wong 05/01/2026

問過客服先買,20L一家三口用其實爭啲啲,要沖快啲。好在佢翻熱得快,第二個人唔洗等好耐。整體ok,但家庭用家要考慮清楚容量。

Vi*******w 24/09/2025

It's slim and looks nice, but 'fast heating' still takes about 15 mins to get to a good temperature. It's not instant. Performance is just acceptable for the price.

Sa***p 28/10/2025

幫屋企人換,最緊要安全易用。呢部有溫度顯示,老人家一睇就明,唔怕校錯。機身夠薄,裝喺舊樓廁所冇問題。

Ah****g 09/11/2025

舊嗰個壞咗急住換,見樂信牌子信得過,內膽仲有十年保養。BBE送貨快,第二日就到,解決燃眉之急。

Alex P. 05/01/2026

The white glass panel gives a very clean, minimalist vibe. Finally, a water heater that doesn't look like an ugly industrial tank. ✨

T. C. Lam 29/07/2025

The digital display is a great feature, very clear showing the real-time water temp. Smart and user-friendly. 👍

K. L. Ma 12/07/2025

Very fast heating, perfect for my morning rush. The slim design saved a lot of space. Good value.

麗姐 01/08/2025

樂信爐真係超薄 慳好多位

Fi*****m 21/07/2025

Slim design is perfect for HK flat

Iv*****n 14/02/2026

LCD display is clear to see

He****g 06/01/2026

Service was super efficient

黃師奶 18/07/2025

送貨快 師傅好好👍

Ga****u 27/01/2026

Quick heat tech is great!

明仔 30/07/2025

水溫夠快 沖涼爽呀

Installation

 

 

*Water Heater Standard installation fee    
Site inspection(No return) Ask For Agent    
Instantaneous Water Heater Ask For Agent    
Shower Unit Storage Water Heater Ask For Agent    
Central System Storage Water Heater (8 gal or below) Ask For Agent    
Central System Storage Water Heater (10 gal or above) Ask For Agent    
Horizontal Installation charge Ask For Agent    
Uninstall and take away the old machine Ask For Agent    
*Instantaneous Water Heater Standard installation include:      
a.3ft power cord (Surface wiring)      
b.4ft white plastic coated copper pipe for hot and cold water      
*Shower Unit Storage Water Heater Standard installation include:      
a.10ft power cord (Surface wiring)      
b.4ft white plastic coated copper pipe for hot and cold water & 2 Copper pipe accessories      
*Central System Storage Water Heater Standard installation include:      
a.10ft power cord (Surface wiring)      
b. 3ft white plastic coated copper pipe for hot and cold water & 7 Copper pipe accessories      

 

     
*Water Heater extra fee(For reference only)    
White plastic coated copper pipe for hot and cold water   $30 / ft    
White plastic pipe with drain valve (below 8ft) $100    
Copper pipe accessories $30/ each    
Air Bleed valve $400    
Make a new water input $200    
Split the electricity from one socket(include the 10ft Power cord) $800    
Power cord extension $20 / ft    
Power cord extension(3-phase*4) $80 / ft    
Stairs fee $30 (10steps)    
Installation surcharge for Tung Chung / Ma Wan area $100    
Installation surcharge for Discovery Bay area $400    
REMARK      
*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.      

 

 

Delivery
  • Delivery: $100 per item
    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?

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.

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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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