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UNI 95 wood boiler, 330K BTU
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UNI 95 wood boiler, 330K BTU
Heating Capacity: Up to 8,000 ft²
Smart-controlled wood gasification with burns up to 24 hours
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$10,675
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- 86%+ efficiencyWood gasification extracts more heat from every load
- Smart controllerCustomizable control for fan, CH, and DHW operation
- Up to 24 hour burnLong burn time for steady heating
- 5 mm steel frameHeavy-duty ASTM A106 boiler construction
- DHW readyHeats water and space from one system
Frequently Bought Together
Total price: $10,675
MBTEK UNI Wood Boiler
Main Features
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Fire Box
The large loading chamber holds a full charge of wood, so you can go longer between reloads without sacrificing steady heat output.
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Burning time
A single loading can burn for up to 24 hours, giving you steady heat overnight or through the day without constant attention.
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Smart Controller
The controller automatically manages the fan, central heating pump, and hot water pump, and lets you set combustion options for your fuel.
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Heat exchanger
A tubular heat exchanger pulls more heat from the flue gas before it leaves the chimney, so more of every fire goes into your home.
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Automated Fan
Multiple fan speeds adjust combustion air automatically, helping the fire burn cleaner and steadier across a full range of heat output.
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Boiler Steel Frame
A 5mm ASTM A106 steel frame with cast-iron grates and insulation is built to handle years of daily wood-burning without warping.
Thickness nearly 1/4"
UNI boilers use certified ASTM A106 steel with a powder-coated casing, cast-iron grates, 2" insulation, and thermal protection systems for durable, dependable performance year after year.
Powerful controller
The advanced controller automatically manages fan modulation, the central heating pump, and the hot water pump, while letting you program combustion settings based on fuel type and operating conditions.
A heat source you can count on
This boiler is clean, full combustion extracts the greatest amount of heat with a guaranteed efficiency of 86 % or more, using micro air metering in the lower and higher fire chambers.
Up to 24 hours
The large loading chamber and 30 to 100 percent heat output give UNI long, efficient burns, with low exhaust temperatures and optional gasification mode when paired with a buffer tank.
Technical specifications
Product-specific specifications for the UNI 95 wood boiler.
| Approx. heating area | Up to 8,000 ft² |
|---|---|
| Water vol. | 48 gal |
| Connection | 2 inch |
| Chimney | 8 inch |
| Firebox size | 81 gal |
| Log length | 30 inch |
| Boiler width | 39½ inch |
| Boiler depth | 50 inch |
| Boiler height | 69 inch |
| Boiler weight | 1490 lb |
Product documents
Access the official product documentation below.
UNI Wood Boiler Manual
Full UNI wood boiler manual covering operation, maintenance, and safety guidance.
UNI Wood Boiler Install Guide
Installation guide for UNI wood boiler setup, piping, startup, and commissioning.
UNI Wood Boiler Controller Manual
Controller operating instructions, settings, menus, and programming guidance.
UNI Controller Replacement
Replacement procedure and reference guide for the UNI controller.
Product details
UNI FAQ
UNI Wood Boiler Frequently Asked Questions
Answers about the UNI wood gasification boiler for indoor hydronic heating, sizing, and maintenance.
What is a UNI wood gasification boiler?
The UNI is an indoor wood gasification boiler that burns firewood in two stages: first releasing combustible wood gases from the load, then burning those gases in a secondary high-temperature zone. The heat transfers into water for radiant floors, radiators, fan coils, and domestic hot water loads through a properly designed hydronic system.
Which UNI model should I choose?
Approx. heating area: UNI 15 is suitable for up to 2,500 ft², UNI 40 for up to 4,000 ft², UNI 60 for up to 5,000 ft², and UNI 95 for up to 8,000 ft². Approximate coverage only. Final selection requires a building heat-loss calculation and MBTEK sizing review.
How does UNI compare to TITAN Lambda and PRO?
UNI and TITAN Lambda are both wood gasification boilers built for efficient, cleaner-burning heat, while PRO is MBTEK's simpler, lower-cost, no-electricity wood boiler. UNI uses a smart controller for fan, central heating, and hot water operation with 86%+ efficiency, while TITAN Lambda adds automatic ignition and oxygen-sensor combustion control for up to 95% efficiency. Choose UNI for most indoor wood gasification boiler projects, TITAN Lambda for the most automated and highest-efficiency option, and PRO if you want off-grid operation without electricity.
Can a UNI wood boiler provide domestic hot water?
Yes. A properly sized UNI can support domestic hot water through an indirect tank or approved hydronic design, alongside space heating. Domestic hot water demand should be sized alongside the space-heating load from the start, since it affects buffer tank sizing and peak output needs, rather than added on afterward.
Does a UNI wood gasification boiler need a buffer tank?
Many wood gasification boiler systems benefit from a buffer tank because a full wood burn can produce more heat than the building needs at that moment. On UNI, an optional gasification mode is available when the boiler is paired with a buffer tank, which can capture that heat, reduce cycling, and improve comfort when the system is designed correctly.
What maintenance does a UNI wood boiler need?
Maintenance includes burning dry, properly seasoned firewood, removing ash, cleaning the tubular heat exchanger and combustion chamber surfaces, inspecting the chimney and flue, checking door gaskets, and servicing pumps, controls, valves, expansion tank, and water quality as part of annual hydronic service.
