Stiebel Eltron 187874 SBB 400 Plus Domestic Hot Water Tank
109 Gallon | Dual Heat Exchanger | Solar, Geothermal & Hydronic Integration
The Stiebel Eltron SBB 400 Plus is a high-capacity, premium domestic hot water storage tank designed for advanced renewable and hydronic heating systems. With its dual heat exchanger design, superior insulation, and robust construction, this 109-gallon tank delivers exceptional heat transfer efficiency, reliable hot water output, and long-term durability—making it an ideal solution for demanding residential and commercial applications.
Dual Heat Exchanger Design for Maximum System Efficiency
The SBB 400 Plus is engineered with two large internal heat exchanger coils, allowing integration with multiple energy sources:
- Top heat exchanger output: up to 128,000 BTU/hr
- Bottom heat exchanger output: up to 164,000 BTU/hr
- Optimized surface area for rapid heat transfer
This dual-coil configuration supports solar + boiler, geothermal + auxiliary, or multi-source hydronic systems, maximizing energy efficiency and system performance.
High-Capacity Hot Water Storage
With a 109-gallon storage capacity, the SBB 400 Plus is built to handle higher hot water demands:
- Storage capacity: 108.6 gallons (411 liters)
- Maximum recovery rate: approximately 186 gallons per hour
- Ideal for large residential and light commercial applications
This ensures consistent, high-volume hot water availability, even during peak demand periods.
Advanced Insulation for Reduced Energy Loss
The SBB 400 Plus is designed to minimize standby heat loss and maintain stored water temperature:
- Up to 3" thick R-21 urethane foam insulation
- Low standby heat loss, approximately 2.2 kWh per 24 hours
- Fully insulated tank design for improved efficiency
This results in lower operating costs and enhanced system performance.
Durable, Long-Life Construction
Built to Stiebel Eltron’s exacting standards, the SBB 400 Plus is engineered for durability and reliability:
- Heavy-gauge steel tank with porcelain enamel coating
- Magnesium sacrificial anode rod for corrosion protection
- Pressure-tested to 217 psi with a maximum working pressure of 150 psi
- Designed for long service life with minimal maintenance
This ensures reliable performance in demanding environments over the long term.
Designed for Flexible System Integration
The SBB 400 Plus is ideal for complex heating system configurations:
- Compatible with solar thermal, geothermal, and hydronic boiler systems
- Dual heat exchanger loops for optimized energy input
- Multiple connection points for flexible installation
- Suitable for residential, commercial, and institutional applications
This flexibility allows for custom system design and maximum energy utilization.
Get the Best Price at ProDryers
Upgrade your hot water system with the Stiebel Eltron SBB 400 Plus and experience high-capacity, energy-efficient performance.
Buy now at ProDryers for competitive pricing and fast shipping, or request a custom quote to secure the best available price. With expert support and volume discounts, ProDryers is your trusted source for premium water heating solutions.
