Stiebel Eltron 206428 Mini-E™ 4-3 Thermostatic Electric Tankless Water Heater
4.1 kW • 277V • Commercial-Grade Precision for Point-of-Use Handwashing
The Stiebel Eltron Mini-E™ 4-3 (Part #206428) is a purpose-built thermostatic point-of-use tankless water heater designed for commercial environments operating on 277V electrical systems. Combining advanced electronic temperature control with high-efficiency tankless technology, this unit delivers consistent, code-compliant hot water performance in applications where reliability and precision are essential.
Engineered for 277V Commercial Applications
Unlike standard residential units, the Mini-E™ 4-3 is specifically designed for 277V power, making it ideal for office buildings, schools, healthcare facilities, and institutional environments. This allows for lower amperage draw and simplified electrical integration while still delivering strong heating performance.
With a 4.1 kW heating capacity, this model provides enhanced temperature rise and stable output, ensuring reliable handwashing performance even under varying inlet conditions.
Advanced Thermostatic Control Technology
At the core of the Mini-E™ 4-3 is electronic thermostatic regulation, which continuously monitors outlet temperature and adjusts heating output in real time. This ensures:
- Consistent water temperature regardless of flow fluctuations
- Reduced risk of scalding
- Reliable compliance with temperature control standards
The unit is factory-set to approximately 100°F for optimal handwashing, with an adjustable range typically between 86°F and 122°F, allowing precise customization for specific applications.
Technical Specifications
- Power: 4.1 kW
- Voltage: 277V
- Amperage: ~15A
- Typical Flow Rate: ~0.50–0.66 GPM
- Minimum Activation Flow: ~0.30–0.40 GPM
- Temperature Range: ~86°F – 122°F adjustable
- Factory Set Temperature: ~100°F
- Maximum Pressure: 150 PSI
- Connections: 3/8" O.D.
- Compact under-sink installation
Ideal Applications
The Mini-E™ 4-3 is engineered for performance-critical commercial environments, including:
- Office buildings with 277V electrical systems
- Healthcare and medical facilities
- Schools and universities
- Laboratories and regulated environments
- Retail and hospitality restroom sinks
This model is especially valuable where precise temperature control, reliable output, and compatibility with commercial power systems are required.
Installation & Compliance
The Mini-E™ 4-3 is UL and CSA certified and meets NSF/ANSI lead-free standards, ensuring safe and compliant operation. Installation must be completed by a licensed electrician and plumber, with proper 277V circuit integration and adherence to all local codes.
Get the Best Price at ProDryers
When specifying a commercial-grade thermostatic tankless water heater, choosing the right supplier is critical. ProDryers is a trusted source for Stiebel Eltron products, offering expert guidance and highly competitive pricing.
Buy the Stiebel Eltron Mini-E™ 4-3 (206428) today at the best available price, or request a custom quote for bulk or project pricing.
Contact ProDryers now to secure expert support, aggressive pricing, and a precision-engineered tankless solution built for your application.
