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PRO 11 wood boiler, 55K BTU
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PRO 11 wood boiler, 55K BTU
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- Hydronic-ready designBuilt for reliable hot-water
- 86% efficiencyHigh-efficiency heat output lowers fuel cost
- Durable steel buildRobust steel construction for long-term use
- No electricity requiredOFF-Grid operation without external power
- Built for long service lifeFor everyday use with lasting performance
Frequently Bought Together
Total price: $3,550
TIS PRO Series Wood Boiler
Main Features
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Hydronic-ready design
PRO connects directly into your home's hot-water heating system, sending heat to radiators, radiant floors, or fan coils through simple hydronic piping.
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86% efficiency
An efficient firebox design captures more heat from every load of wood, so less fuel is wasted and your heating costs stay lower.
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Durable steel build
Welded steel construction is built to handle years of daily wood-burning without warping, giving PRO a long working life in demanding conditions.
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No electricity required
PRO burns and circulates heat without any electrical components, so it keeps working through power outages and fits true off-grid setups.
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Built for long service life
Simple manual-feed operation means fewer parts that can fail, so PRO is built to run reliably season after season with basic upkeep.
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Wide capacity range
PRO 11 and PRO 30 cover 55,000 to 105,000 BTU, sizing to fit small homes, cabins, workshops, and light commercial spaces.
Heating Capacity
The TIS PRO series offers two heating capacities, 55,000 and 105,000 BTU, providing customized and efficient solutions for heating residential and commercial spaces of various sizes, ensuring optimal comfort and reducing energy costs.
Water Pressure Management
To ensure safe operation, the water pressure must not exceed 15 psi. It is essential to use a safety valve as specified in the manual. The maximum test pressure is 50 psi.
Maximum Working Temperature
All TIS PRO models have a maximum working temperature of 185°F. This temperature should not be exceeded to ensure safe operation and to prevent damage to the boiler components. Maintaining the temperature within this limit is crucial for optimal performance and safety.
Fuel Efficiency
The TIS PRO series boasts an 86% efficiency rating, translating to lower fuel costs and improved energy efficiency. This high efficiency makes the TIS PRO series a cost-effective choice for heating applications, reducing your environmental impact while maximizing your savings.
Technical specifications
Product-specific specifications for the TIS PRO 11 wood boiler.
| Heat area | 1,500 ft² |
|---|---|
| Weight | 400 lb |
| Width | 15 in. |
| Depth | 22 in. |
| Height | 45 in. |
| Firebox size | 9 gal |
| Log length | 11 in. |
| Power supply | No electricity needed |
| Water flow through boiler | 2.20 GPM |
| Hydraulic resistance | Up to 1.45 PSI |
| Chimney diameter | 4.25 in. |
| Fuel types | Wood, coal, and briquettes |
| Efficiency | 86% |
Maximum working temperature is 185°F. Water pressure must not exceed 15 psi; use a safety valve as specified in the manual.
Product documents
Access the official product documentation below.
PRO Series Manual
Full PRO Series manual covering operation, maintenance, and safety guidance.
Product details
WOOD BOILER – 55K BTU (PRO 11)
Compact and efficient manual-feed biomass boiler designed for off-grid heating without electricity, delivering reliable performance with clean combustion and thermostatic control for smaller residential spaces.
Key Benefits
- Operates without electricity, ideal for off-grid systems
- Burns wood, coal, and woodchips with high efficiency
- Thermostatic air control ensures stable and efficient combustion
- Compact design fits easily in limited spaces
- Compatible with thermosiphon circulation (no pump required)
Specifications
- Heating Capacity: Up to 1,500 ft²
- Output: 55,000 BTU
- Weight: 400 lb
- Dimensions: 15" W × 22" D × 45" H
- Firebox Volume: 9 gallons
- Log Length: Up to 11"
- Fuel Type: Wood, coal, woodchips
- Origin: Made in Europe
PRO FAQ
PRO Wood Boiler Frequently Asked Questions
Answers about the PRO wood boiler's off-grid operation, fuel flexibility, and sizing.
Is PRO a wood gasification boiler?
No. PRO is MBTEK's simpler, non-gasification wood boiler, built for straightforward manual-feed operation rather than the secondary-combustion gasification process used by UNI and TITAN Lambda. PRO is a practical, lower-upfront-cost option for cabins, shops, and simple hydronic layouts.
Does PRO need electricity?
No. PRO is the only boiler in MBTEK's wood boiler line that runs with no electricity required, giving it true off-grid operation without external power. UNI, UNI Industrial, and TITAN Lambda all rely on smart controllers, fans, or automated ignition that need power to run.
Can PRO burn coal or briquettes?
Yes. PRO is designed to burn wood, coal, and briquettes, giving it fuel flexibility that UNI, UNI Industrial, and TITAN Lambda do not have, since those families are wood-only.
Which PRO model should I choose?
PRO 11 (55K BTU) is rated for up to 1,500 ft², and PRO 30 (105K BTU) is rated for up to 3,000 ft². PRO 11 is MBTEK's smallest wood boiler, well suited to small homes, cabins, and shops, while PRO 30 covers larger single spaces. Final sizing should be based on heat loss, climate, insulation, and hydronic design.
Can PRO provide domestic hot water?
Yes. PRO 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 tank sizing and peak output needs.
