VIESSMANN VITOTHERM EI CLASSIC18/21/24 Instantaneous Water Heater 3-phase power
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The VIESSMANN VITOTHERM EI CLASSIC is a high-performance, 3-phase instantaneous water heater designed for reliable on-demand hot water. Manufactured in Europe, this unit features a selectable power output of 18, 21, or 24 kW, providing efficient and consistent performance. Its fully electronic control system ensures precise temperature management, delivering hot water exactly when you need it, making it an ideal solution for modern households and commercial applications.
Reliable and Precise Hot Water on Demand
Experience superior comfort with the Vitotherm EI Classic's fully electronic control system. Set your desired water temperature with precision, anywhere between 30°C and 60°C, using the intuitive rotary function button. The clear LED display provides at-a-glance information, ensuring your hot water is always at the perfect temperature for your needs.
Efficient and Safe Operation
Engineered for both safety and efficiency, this water heater incorporates an electronic safety shut-off system, which includes air detection to prevent damage and ensure longevity. Its energy-efficient design helps reduce electricity consumption. The unit is also compatible with pre-heated water from solar systems, further enhancing its green credentials. With an IP25 waterproof rating, it guarantees safe installation and operation in wet environments like bathrooms.
Key Features
- Full electronic control for consistent temperature
- User-selectable power output: 18 / 21 / 24 kW
- Precise temperature selection from 30°C to 60°C
- User-friendly rotary dial and LED display
- Advanced electronic safety system with air detection
- High energy efficiency
- Compatible with solar thermal systems
- IP25 waterproof protection
- Durable construction, Made in Europe
Technical Specifications
- Model: VITOTHERM EI CLASSIC 18/21/24
- Power Supply: 3-phase
- Rated Output (at 400V): 18 / 21 / 24 kW
- Rated Output (at 380V): 16.3 / 19 / 21.7 kW
- Rated Current: ~26 / ~30 / ~35 A
- Fuse Protection: 32 / 32 / 40 A
- Activation Water Flow Rate: 2.5 l/min
- Mixed Water Flow Rate: 8.7 / 10.1 / 11.6 l/min
- Max. Inlet Temperature: 60°C
- Dimensions (H x W x D): 440 x 245 x 126 mm
- Warranty: 2 years
The product information above is for reference only; everything is subject to the brand's official website.
VIESSMANN VITOTHERM EI CLASSIC18/21/24 Instantaneous Water Heater 3-phase power 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.
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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