RESIDENTIAL & COMMERCIAL BIOMASS HEATING, BUILT TO LAST
Automated wood chip boiler systems for homes, estates, commercial, and industrial hydronic heating, from 170K to 3.4M BTU.
Residential & commercial systems | Biomass heating | Complete systems
Choose your wood chip boiler system
BIO DUO Residential models cover large homes and estates from 170K to 340K BTU, BIO DUO Industrial scales up to 3.4M BTU for industrial and large-building heating, and the Boiler Conveyor Storage System keeps hoppers automatically fed for continuous operation.
BIO DUO
Automated wood chip boiler sized for large homes, estates, and light-commercial hydronic heating.
BIO DUO
High-capacity wood chip boiler for commercial, industrial, and large-building hydronic heating.
CONVEYOR
Motorized conveyor and storage system that keeps BIO DUO hoppers continuously supplied with biomass fuel.
Not sure which system fits your home or business? MBTEK can help confirm boiler size, fuel storage capacity, chimney planning, controls, and accessories for your project.
Sizing guide
Square-footage ranges are approximate. Final sizing depends on heat loss, insulation, climate, fuel storage design, chimney planning, and how the boiler will be used.
| Product | Approx. coverage | Price | Details |
|---|---|---|---|
BIO DUO Residential Wood Chip BoilerBest for large homes & estates | |||
| Up to 5,000 sq ft | From $11,138$15,91230% OFF | ||
| Up to 10,000 sq ft | From $13,882$19,83130% OFF | ||
BIO DUO Industrial Wood Chip BoilerBest for commercial & industrial scale | |||
| Up to 15,000 sq ft | From $16,916$24,16530% OFF | ||
| Up to 30,000 sq ft | From $24,812$35,44630% OFF | ||
| Up to 50,000 sq ft | From $27,472$39,24630% OFF | ||
| Up to 95,000 sq ft | From $33,707$48,15330% OFF | ||
The Boiler Conveyor Storage System pairs with any BIO DUO model above in single- or multiple-boiler configurations. For large or mixed-use buildings, confirm final sizing with MBTEK before ordering.
A wood chip boiler is an automated biomass boiler that burns wood chips instead of cordwood or pellets. A hopper and automatic feed system deliver chips into the burn chamber under modulating combustion control, and the boiler transfers that heat into water for hydronic systems serving homes, estates, commercial buildings, and industrial facilities.
Wood chip boilers are built for continuous, hands-off operation. Because chips are bulkier and less energy-dense than pellets, larger models pair with dedicated fuel storage and a conveyor system so the boiler can run for extended periods between refills.
MBTEK wood chip boiler systems are built on the BIO DUO platform. BIO DUO Residential models (170K and 340K BTU) size for large homes, estates, and light-commercial buildings, while BIO DUO Industrial models (500K to 3.4M BTU) scale up to industrial and large-building heating loads. Every BIO DUO model uses the TIS TRONIC 660HD controller for automated combustion, feed, and system control, with ASTM A106 boiler steel construction and 86%+ efficiency.
A complete system can include the Boiler Conveyor Storage System for automated fuel delivery, a buffer tank, boiler protection valve, circulator pumps, controls, and hydronic distribution equipment. The product picker and sizing tables above keep those boiler links close to the top so buyers can move from research to model selection quickly.
Wood chips are a lower-cost, less processed biomass fuel than pellets, but they are bulkier, less energy-dense, and less uniform in size and moisture. Wood chip boilers like BIO DUO are built with larger hoppers and automated feed to handle that variability, and commercial-scale systems typically pair with a dedicated storage and conveyor system.
Wood pellets are a manufactured fuel with consistent size, low moisture, and low ash content, which allows a pellet boiler to use a smaller hopper and simpler auger feed. Pellet fuel generally costs more per BTU than wood chips, but requires less fuel storage and handling for a given heating load.
BIO DUO 50 (170K BTU, up to 5,000 sq ft) and BIO DUO 100 (340K BTU, up to 10,000 sq ft) are sized for large homes, estates, and light-commercial buildings that want automated wood chip heat without industrial-scale fuel handling.
BIO DUO 150 and larger (500K to 3.4M BTU, up to 15,000–95,000 sq ft) are built for commercial, industrial, and large-building heating loads, and typically pair with the Boiler Conveyor Storage System to keep the hopper fed automatically across longer runtimes and higher fuel volumes.
Square footage is only a starting point. Final wood chip boiler sizing should account for heat loss, climate, insulation, ceiling height, air leakage, domestic hot water demand, radiant or fan coil loads, and whether the system is heating a home, estate, or commercial building.
Use a heat-loss calculation when possible, especially for large, mixed-use, or poorly insulated buildings.
A buffer tank can store heat, reduce cycling, and improve comfort in many wood chip boiler systems.
Confirm flue sizing, draft, clearances, combustion air, and local code before finalizing the mechanical-room layout.
Plan dry wood chip storage and a refill routine, or add the Boiler Conveyor Storage System, to match hopper autonomy and seasonal demand.
Wood chip boilers need regular cleaning and annual hydronic service. Correctly sized, dry fuel, clean heat-transfer surfaces, correct draft, and healthy water-side components all affect performance.
Burn correctly sized, dry wood chips. Oversized, wet, or inconsistent chips reduce efficiency and increase cleaning needs.
Remove ash and clean the burn chamber and heat exchanger surfaces on schedule to maintain efficiency and airflow.
Inspect flue paths, draft, door gaskets, and smoke seals so combustion stays controlled and safe.
Check pumps, valves, controls, expansion tank, water quality, and the fuel feed or conveyor system as part of annual service.
Wood Chip Boiler FAQ
Direct answers about wood chip boilers, how they work, residential vs commercial sizing, fuel, the Boiler Conveyor Storage System, and maintenance.
A wood chip boiler is an automated biomass boiler that burns wood chips instead of cordwood or pellets. It feeds fuel from a hopper into the burn chamber under automatic combustion control and transfers that heat into water for hydronic space heating.
A wood chip boiler feeds chips from a hopper into the burn chamber, where a controller like MBTEK's TIS TRONIC 660HD manages combustion and feed rate automatically. BIO DUO is built for automated, modulating combustion control rather than the two-stage gasification process used in MBTEK's cordwood boilers like UNI and TITAN Lambda.
Wood chips are a lower-cost, less processed fuel that is bulkier and less consistent than pellets, so wood chip boilers use larger hoppers and often pair with a dedicated storage and conveyor system. Pellet boilers use a more uniform, lower-moisture fuel that needs less storage volume for the same heating load.
Yes. BIO DUO 50 and BIO DUO 100 (170K and 340K BTU) are sized for large homes, estates, and light-commercial buildings. BIO DUO 150 and larger scale up to commercial, industrial, and large-building heating loads.
Choose BIO DUO Residential (50 or 100) for large homes and estates up to 10,000 sq ft, and BIO DUO Industrial (150 through 1000) for commercial, industrial, or large-building heating from 15,000 up to 95,000 sq ft. Add the Boiler Conveyor Storage System for automated fuel delivery on larger or continuous-run systems.
The Boiler Conveyor Storage System automatically delivers wood chips from storage into a BIO DUO hopper, reducing manual refilling and keeping combustion consistent. It is available in single-boiler and multiple-boiler configurations.
BIO DUO boilers are designed for graded, properly sized wood chip fuel with controlled moisture content. Wet or oversized chips reduce efficiency and increase ash and cleaning needs, so fuel quality and dry storage matter as much as boiler sizing.
Maintenance includes burning correctly sized, dry wood chips, removing ash, cleaning the burn chamber and heat exchanger, inspecting the chimney and seals, and servicing pumps, controls, valves, and the fuel feed or conveyor system annually.
