-
Your shopping cart is empty!
VAILLANT VEDE21/8 PLUS vs STIEBEL ELTRON DHB18/21/24ST Trend Comparison
DHB18/21/24ST Trend
Stiebel Eltron DHB18/21/24ST Trend Electronic Control Instantaneous Water Heater
HK$3,688
HK$6,670
Side by side
VEDE21/8 PLUS DHB18/21/24ST Trend
- VEDE21/8P PLUS is rated at 21 kW (400 V); DHB18/21/24ST Trend offers installation-selectable ratings of 18 / 21 / 24 kW (400 V).
- VEDE21/8P PLUS has a 20–55°C temperature range and four programmable memory keys; DHB18/21/24ST Trend has a 20–60°C range with a rotary selector.
- VEDE21/8P PLUS automatically limits water temperature to 42°C for scald protection; DHB18/21/24ST Trend offers childproof anti-scalding settings of 43°C, 50°C or 55°C.
- VEDE21/8P PLUS includes a 3-year free on-site warranty, excluding commercial use; DHB18/21/24ST Trend includes a 2-year warranty.
| 項目/item | VEDE21/8P PLUS | DHB18/21/24ST Trend |
| Model identification | Listed model: VEDE21/8P PLUS; input label: VEDE21/8 PLUS | DHB18/21/24ST Trend |
| Heater type | Instantaneous water heater | |
| Country of origin | Slovakia | Germany |
| Dimensions | 481 × 240 × 99 mm; axis order not specified | 466 × 225 × 116 mm (H × W × D) |
| Weight | Not specified | 2.9 kg |
| Power supply configuration | Three-phase | Not specified |
| Rated output at 400 V | 21 kW | 18 / 21 / 24 kW |
| Rated output at 380 V | 18.9 kW | 16.2 / 19 / 21.7 kW |
| Installation-selectable power | Not specified | 18 / 21 / 24 kW at 400 V, selected during installation |
| Control system | Electronic power adjustment with precise temperature control | Electronic temperature control with rotary selector |
| Temperature adjustment range | 20–55°C | 20–60°C |
| Heating efficiency | Up to 99.99% | Not specified |
| EU energy label | A | Not specified |
| Programmable temperature memory keys | 4 keys | Not specified |
| Outlet applications | Multiple outlets simultaneously | Single or multiple outlets |
| Solar water heating compatibility | ✅ | |
| Scald protection | Automatically prevents water temperature from exceeding 42°C | Childproof anti-scalding setting selectable at 43°C, 50°C or 55°C |
| Childproof protection | Childproof lock prevents unintended temperature adjustments | Childproof anti-scalding setting |
| Electronic air detection system | ❌ Not specified | ✅ |
| Bare wire heating system | ❌ Not specified | ✅ |
| Suitable for hard and soft water | ❌ Not specified | ✅ |
| Protection level | Not specified | IP25, protected against water jets |
| Maximum working pressure | Not specified | 1.0 MPa (10 bar) |
| Minimum working pressure | Not specified | 0.02 MPa (0.2 bar) |
| Start flow rate | Not specified | >3 L/min |
| Pipe connection | Not specified | 15 mm (G1/2″) |
| Installation system | Not specified | Profi-Rapid® installation system |
| Optional remote control | Not specified | Wired FB1 LCD Trend, available separately |
| Warranty | 3-year free on-site warranty; commercial use excluded | 2-year warranty |
The above information is analyzed and compared by AI, and the content may not be 100% accurate. If you have any questions, please contact our sales staff or the brand for inquiries.