Free basic delivery

Authorized Good

RASONIC RWH-CT7 Black 24L Unvented Instant Storage (Hybrid) Water Heater (Black Tempered Glass) (Left Flue)

1 / 2

RASONIC RWH-CT7 Black 24L Unvented Instant Storage (Hybrid) Water Heater (Black Tempered Glass) (Left Flue)

4.6 (38) 200+ sold Gift Points $20

FPS/Bank Transfer/Cash

$5,430
HK$4,064

Discounted price for other payments HK$4,190

Extend Product Warranty Best Value

Continue using your appliance with peace of mind after the manufacturer warranty period ends, including on-site inspection, repairs (including parts replacement), and replacement services. Learn More

+1 year(s)

$358

+2 year(s)

$488

+3 year(s)

$718

No Extended Warranty

Qty

Out of Stock

Print Compare this Product Smart Compare Download Official website

Product offers

3 offers

Citi Exclusive | $150 Instant Off

Get $150 off upon a single net transaction of $6,000. Use code [CITI150] online. (In-store & Online)

X Pay Buy Now, Pay Later

Interest-Free 3 Installments | New users get $30 off $80 + $20 coupon

Interest-Free Installments

In-Store Only: Spend $2,000+ for 12-month 0% interest (HSBC/AE/BOC/DBS/Aeon)

Size 380 x 195 x 690 毫米 Warranty Period 1 year Motor/Compressor Warranty Period 10 year

The Rasonic RWH-CT7 is a high-efficiency unvented instant storage (hybrid) water heater, delivering consistent hot water with its 24-litre capacity and 3,000W power rating. Featuring a sleek black tempered glass finish and a slim 19.5cm profile, it combines patented rapid heating technology for reduced waiting times with a durable stainless steel tank, making it a reliable and space-saving solution for modern homes.

Experience a New Level of Comfort and Efficiency

The Rasonic RWH-CT7 is engineered for performance and convenience, perfectly suited for contemporary living. Its hybrid design ensures you get hot water quickly without the long waits associated with traditional storage heaters.

Patented Rapid Heating: Utilises an innovative technology (Patent No. ZL201410248043.1) that significantly increases heating speed and efficiency, shortening preheat times for a stable supply of hot water.
Slim & Stylish Design: With an ultra-slim depth of just 19.5cm and a stylish black tempered glass cover, it saves valuable space while enhancing your bathroom's aesthetic.
Intelligent Control: Features a fully automatic operation that heats water to the maximum temperature and a clear LCD screen that displays the real-time water temperature for easy monitoring.
Flexible Installation: Designed with cable inlets on both sides of the unit, allowing for versatile placement to suit different installation environments.
Durable & Safe: Built with a high-quality stainless steel water tank and equipped with a pressure & temperature relief valve for safe, long-lasting performance. It also boasts an IPX4 waterproof rating.
Complete Set: Includes a special shower head, flexible tube, and a P&T valve for a comprehensive installation package.

Product Specifications

Model: RWH-CT7
Type: Unvented Type
Rated Power: 3,000W
Rated Voltage: 220V / 50Hz
Water Tank Capacity: 24 Litres
Highest Temperature: 75-80℃
Display: Liquid-crystal display (LCD)
Water Proof Standard: IPX4
Max. Water Supply Pressure: 600kPa (6 bar)
Pipe Connection: 1/2"
Dimensions (W x D x H): 380 x 195 x 690 mm
Net Weight: 15 kg
Weight (Full Tank): Approx. 39 kg

Warranty Information

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

Please note: 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.

Customer reviews

Write a review

Overall rating

4.6/ 5

38 reviews

5 24

4 11

3 3

2 0

1 0

Showing 15 of 38 reviews

Mr. Kwok

15/09/2024

新屋裝修，師傅話呢部機身夠薄，啱晒我個細浴室。BBE送貨準時。開機試用，加熱真係快，液晶顯示溫度好清晰，屋企人連續沖涼都無問題。黑色玻璃面 design 好 modern！

Mrs. Yau

20/11/2023

BBE送貨好快手。買俾屋企老人家用，個液晶顯示夠大夠清楚，水溫幾多度一睇就知，操作夠簡單，佢哋都話好用。個恆溫好好，唔會忽冷忽熱，用得好放心。😊

Ch********n

28/12/2023

問過BBE CS啲尺寸問題先買，服務唔錯。速熱係快嘅，但24公升冬天一家四口用有啲勉強，最後一個要等一陣。不過見佢內膽保用十年，都係揀佢。

K. Y. Fong

11/06/2024

The IPX4 rating and 10-year warranty on the inner tank were key selling points. The unit performs as advertised, heating is efficient and the build quality feels solid. A reliable choice.

P. L. Mui

19/02/2024

Was choosing between this and another brand. Picked this for the slim design and better warranty terms. So far, so good. BBE delivery was on time.

Sarah L.

02/11/2024

Sleek design and the slim profile is a lifesaver for my tiny apartment. Heats up way faster than my old unit. Very happy with this purchase.

K. Y. Cheung

28/01/2024

Bought this for my rental unit. The 10-year warranty on the inner tank is a huge plus for peace of mind. Simple operation for tenants.

Eric

30/10/2024

換走舊式大牛龜，呢部機即刻慳返好多空間。沖涼終於唔使等半個鐘，個速熱技術真係有料到。😊

Mi***o

16/04/2024

部機真係好薄，裝完個浴室睇落大咗。加熱速度OK，夠我一個人沖涼用。整體vibe唔錯，幾滿意。👍

Be*****m

01/05/2024

The black glass panel looks very premium, but it's a fingerprint magnet. Have to wipe it often. Heats up fast though.

Pe********g

05/03/2024

Great water heater. Heats up quickly and the slim design is a huge plus. Delivery from BBE was next-day.

T. C. Ng

12/03/2024

Replaced my old gas heater. This is much safer and the temperature is way more stable. Good upgrade.

Mi*****g

08/08/2023

功能OK，但同價位有其他選擇。純粹貪佢個樣夠靚仔。

Ah**i

08/09/2023

CF話兩邊都有電線位，安裝好靈活，慳返唔少功夫。

Ah***g

20/01/2025

部機好薄身，慳返好多位！出熱水又快，正！👍

Write a review

Installation

Electric Water Heaters

Standard Installation

Item	Charge
Site inspection (non-refundable)	Installed by agent; charges apply separately
Instant type (three-phase or single-phase)	Installed by agent; charges apply separately
Shower type	Installed by agent; charges apply separately
Pressure type, 6.5 gallons or below	Installed by agent; charges apply separately
Pressure type, 10 gallons or above	Installed by agent; charges apply separately
Horizontal type	Installed by agent; charges apply separately
Remove and dispose of old unit	Installed by agent; charges apply separately

Standard Installation Scope

Type	Included
Instant type	Includes 3 ft exposed wiring Includes 4 ft plastic-coated hot/cold copper pipe
Shower type	Includes 10 ft exposed electrical cable Includes 4 ft plastic-coated hot/cold copper pipe and 2 fittings
Pressure type	Includes 10 ft exposed electrical cable Includes 3 ft plastic-coated hot/cold water pipe and 7 fittings

Electric Water Heater Additional Installation Charges (For Reference Only)

Item	Charge
Plastic-coated hot/cold copper pipe (per ft)	HK$30
White discharge-valve copper pipe (within 8 ft)	HK$100
Copper pipe fitting (each)	HK$30
Pressure reducing valve	HK$400
Add tee water connection if no water inlet is available	HK$200
Install one electrical point (includes 15 ft cable and circuit breaker)	HK$800
Install branched electrical point (includes 10 ft cable)	HK$250
Extend power cable (per ft)	HK$20
Extend power cable (three-phase ×4, per ft)	HK$80
Staircase handling (per floor per item)	HK$30
Tung Chung and Ma Wan installation surcharge (per order)	HK$100
Discovery Bay installation surcharge (per order): 3 units or fewer	HK$300
Discovery Bay installation surcharge (per order): more than 3 units	HK$600

Delivery Charges

Basic Delivery

Item	Charge
Delivery (per item)	HK$100
Tung Chung, Ma Wan and Discovery Bay surcharge (per delivery)	HK$100
Carrying distance to delivery location exceeds 100 m	Additional 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.

Item	Charge
General appliances	HK$30 / item / floor
Window AC, 3/4 HP to 1 HP	HK$30 / item / floor
Window AC, 1.5 HP to 2.5 HP	HK$50 / item / floor
Window AC, 3 HP or above	To be discussed
Split AC, refrigerator, washing machine	HK$50 / item / floor
Built-in oven, steam oven, chimney hood, built-in / freestanding dishwasher	HK$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.

BBE showroom displaying washing machines, ovens and kitchen appliances — 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.
Mong KokCauseway BayTuen Mun

100% Official StockNo parallel imports · Clear warranty coverage

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

Real Customer Service · Dedicated Follow-upOrder 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 or phone call.

1-to-1 Expert ConsultationInstant 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.

Award-WinningRecognized 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 InstallationOne-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.