Stiebel Eltron DEL 18/21/24 SL 24000W Electronic Control Water Heater
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The Stiebel Eltron DEL 18/21/24 SL Electronic Control Water Heater is a high-performance, instantaneous hot water solution designed for modern living. Offering a flexible power output configuration up to 24000W (24kW), this advanced unit provides precise, on-demand temperature control and superior energy efficiency, making it an excellent choice for homes requiring a reliable and space-saving hot water supply.
Key Features
- Electronic Temperature Control: Microprocessor-controlled for precise temperature selection from 20°C to 60°C, ensuring comfort and preventing scalding.
- Flexible Power Setting: Installer-adjustable power output (18kW, 21kW, or 24kW) to suit varying household needs and electrical capacities.
- Instantaneous Heating: Provides hot water on demand, eliminating the need for a storage tank and reducing energy waste from standby heat loss.
- Bare Wire Heating System: Ensures rapid and efficient heating of water directly as it flows through the unit.
- Multiple Draw-off Points: Capable of supplying hot water to multiple taps or showerheads simultaneously, depending on power setting and water flow.
- Compact Design: Space-saving unit that can be installed discreetly, suitable for various residential layouts.
- Comprehensive Safety Features: Equipped with electronic safety features including air bubble detection and automatic power cut-off.
Technical Specifications
- Model: DEL 18/21/24 SL
- Power Output Options: Installer-selectable at 18kW, 21kW, or 24kW (24000W maximum)
- Voltage: 230-240V, 50/60Hz
- Temperature Range: Electronically controlled from approximately 20°C to 60°C
- Heating System: Bare wire technology
- Control Type: Electronic, microprocessor-controlled
- Dimensions (H x W x D): Approximately 475mm x 225mm x 110mm
- Weight: Approximately 3.8 kg (unfilled)
- Water Connection: G 1/2"
- Minimum Water Pressure: Typically 0.2 bar / 20 kPa
Benefits
- Energy Efficiency: Delivers hot water only when needed, significantly reducing energy consumption compared to traditional storage water heaters.
- Space Saving: Its tankless design frees up valuable space in your home.
- Consistent Hot Water: Enjoy a continuous supply of hot water at your desired temperature, without waiting for a tank to refill.
- User Comfort: Precise electronic temperature control enhances user experience and safety.
- Long-Term Reliability: Built with Stiebel Eltron's renowned German engineering for durability and performance.
The product information above is for reference only; everything is subject to the brand's official website.
Stiebel Eltron DEL 18/21/24 SL 24000W Electronic Control Water Heater 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.
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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.
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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.
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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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