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STIEBEL ELTRON DHC8EL vs DHB-E18/21/24LCD Comparison

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DHC8EL DHB-E18/21/24LCD

  • DHC8EL is rated at 8 kW (220 V); DHB-E18/21/24LCD offers selectable power ratings for 380 V or 400 V supplies.
  • DHC8EL measures 360 × 200 × 110 mm and weighs 2 kg; DHB-E18/21/24LCD measures 466 × 225 × 116 mm and weighs 3.2 kg.
  • DHC8EL has a power indicator light; DHB-E18/21/24LCD has an LCD temperature display and a stated temperature range of 20–60°C.
  • DHC8EL uses a tubular heating system with a German-made copper heating element; DHB-E18/21/24LCD uses a bare-wire heating system with a pressure-tested copper casing.
項目/itemDHC8ELDHB-E18/21/24LCD
Rated power and supply voltage8 kW at 220 VSelectable: 18 / 21 / 24 kW at 400 V; 16.2 / 19 / 21.7 kW at 380 V
Dimensions (H × W × D)360 × 200 × 110 mm466 × 225 × 116 mm
Weight2 kg3.2 kg
Unit typeCentralized
Control unitElectronic control
Control descriptionMicroprocessor control for precise temperature managementFully electronic control for a stabilized hot water supply without temperature fluctuations
Heating systemTubular heating systemBare-wire heating system
Heating element / casing constructionGerman-made copper heating elementPressure-tested copper casing
Temperature rangeNot specifiedOFF, 20–60°C
Fine temperature adjustment, as statedNot specified0.5°C increments from 35°C or 43°C
Minimum flow / starting volume, as statedMinimum starting volume: ≥1.5 L/minMinimum flow rate: 2.5 L/min; starting volume: ≥2.5 L
Output flow rateNot specified5.2–13.8 L/min, dependent on model
Working pressure10 Bar
Inlet size15 mm (G1/2″)
Protection levelIP25, hoseproof
Safety systemElectronic safety system with temperature cut-off device
Temperature limitationElectronic maximum temperature limitationCustomizable childproof temperature limits: 43°C / 50°C / 55°C / 60°C
Air detection❌ Not specified✅
Multiple tap outlet capability✅❌ Not specified
Display / indicatorPower indicator lightLCD temperature display
Hidden pipe and wire installation options✅❌ Not specified
Water compatibilityNot specifiedSuitable for hard and soft water
Compatibility with solar-preheated water❌ Not specified✅
Energy-related claimsOn-demand heating eliminates standby energy lossesKey features: up to 30% energy savings compared with traditional cylinder water heating systems. Important note: the energy-saving claim compares against hydraulic instantaneous water heaters and is subject to pattern of use.
Optional remote controlNot specifiedFFB4 wireless comfort remote control, available separately
Country of origin of complete unitNot specifiedGermany
Warranty periodNot specified2 years
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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.