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EKO DUO 15 Hybrid Coal Boiler, 65K BTU
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- Multi-Fuel VersatilityEffortlessly burns coal, pellets, grains, and manual wood logs.
- Extended AutonomyMassive hopper capacity provides up to 2 weeks of automated heating.
- True Hybrid SystemFeatures both an automated stoker and a spacious manual firebox.
- Smart Continuous CycleIntelligently keeps hot ashes to seamlessly auto-ignite the next fire.
- Premium European BuildRugged, heavy-duty construction manufactured in Europe for extreme durability.
MBTEK EKO DUO Hybrid Boiler
Main Features
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Automatic, Self-Cleaning Boiler
Eko Duo is a state-of-the-art automatic coal boiler with a modern, self-cleaning rotary cast iron burner.
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Flexible Multi-Fuel Capability
Automatically burns coal, pellets, grains, and biomass up to 1½", plus manual feeding for wood chips and peat briquette.
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High Energy Efficiency
Unique design ensures complete heat recovery, guaranteeing 90% operational efficiency.
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Smart TIS tronic 481R Control
Intelligent controller manages combustion based on parameters, weather, and fuel, adapting to modern hydronic systems.
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Extended 4-10 Day Autonomy
Large hopper and automation provide significant operational autonomy, with comprehensive system control features.
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Durable & Easy Maintenance
Built with certified ASTM A106 steel, offering wide access for simple, front-only cleaning and long-term, trouble-free use.
Multi-Fuel Versatility
The Eko Duo's automatic burner efficiently handles coal, pellets, grains, and other biomass up to 1½". For even more flexibility, the middle chamber allows for manual feeding of coal, wood chips, peat briquette, and various other biomass types, adapting to your available fuel sources.
Superior 90% Efficiency
Experience significant energy savings with the Eko Duo's guaranteed 90% efficiency. Its unique design is engineered for complete heat recovery, ensuring optimal heat utilization and reducing fuel consumption while delivering powerful heating performance.
Intelligent TIS tronic Control
The advanced TIS tronic 481R controller intelligently masters combustion, adapting to user settings, weather, and fuel quality. It seamlessly integrates with modern hydronic heating systems, offering functions for pumps, mixing valves, buffer tanks, and providing 4 to 10 days of autonomous operation.
Robust Build & Easy Maintenance
Built from top-quality ASTM A106 certified boiler steel, the Eko Duo ensures long-term, trouble-free performance. Its wide door openings allow easy cleaning of the heat exchanger and ash removal, with all maintenance conveniently front-accessible, requiring no unscrewing.
Technical specifications
Product-specific specifications for the EKO DUO 15 boiler.
| Capacity | 27 – 68 KBTU |
|---|---|
| Heat area | 2,500 ft² |
| Relief valve | 30 psi |
| Water volume | 21 gal |
| Connection | 1 1/2 in |
| Chimney | 6 in |
| Hopper volume | 72 gal |
| Hopper width | 22 in |
| Boiler width | 21 in |
| Boiler depth | 25 in |
| Boiler height | 62 in |
Product documents
Access the official product documentation below.
EKO DUO Hybrid Boiler Manual
Full EKO DUO Hybrid Boiler manual covering operation, maintenance, and safety guidance.
Product details
EKO DUO 15 Hybrid Coal Boiler, 65K BTU
Automatic self-cleaning hybrid coal boiler for smaller hydronic systems, combining multi-fuel flexibility, smart control, and long unattended operation in a compact EKO DUO platform.
Key Benefits
- Automatic self-cleaning burner with rotary cast iron design for reliable solid-fuel combustion
- Flexible multi-fuel capability for coal, pellets, grains, and biomass up to 1 1/2", plus manual feeding for wood chips and peat briquette
- Guaranteed 90% efficiency with a design focused on complete heat recovery
- TIS tronic 481R controller manages combustion, pumps, mixing valves, storage, and hydronic operating modes
- Extended autonomy from the automated hopper and ignition strategy reduces day-to-day intervention
- Front-access maintenance with ASTM A106 boiler steel construction and wide cleaning access
Specifications
- Heating Capacity: 65,000 BTU
- Recommended Area: 2,500 ft²
- Automatic Fuel Range: Coal up to 1 1/4"; also burns pellets, grains, and biomass
- Manual Firebox: 18 gal with up to 15" logs
- Hopper Volume: 72 gal / 585 lb of coal
- Dimensions / Weight: 43" W x 25" D x 62" H; 1,000 lb
- Coal Types: Anthracite and bituminous; rice, buckwheat, pea, and stoker sizes
- Warranty: 10 years
