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PRO wood boiler main unit

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PRO Series — Simple, Off-Grid Wood Heat

PRO 30 wood boiler, 105K BTU

Heating Capacity: Up to 3,000 ft²

The larger PRO model, sized for bigger homes and shops needing more output while keeping the same no-electricity operation.

Model
PRO 30 - 105K BTU · Up to 3,000 ft²

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What Our PRO 30 - 105K BTU Works With

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  • Phoenix boiler installed in a mechanical room with copper hydronic piping, pumps, and controls.
  • UNI wood boiler installed in a green mechanical room beside a vertical water storage tank.
  • MBTEK boiler system with a black and orange cabinet unit and orange hopper in a utility basement.
  • Black and orange boiler installed in a mechanical room with wall-mounted hydronic manifold, pumps, and control panel.
  • Black and orange boiler installed beside a water tank and hydronic piping in a basement mechanical room.
  • Black and orange pellet boiler connected to a black fuel hopper and auger in a finished mechanical room.
  • Black and orange pellet boiler connected to a black hopper and auger in an unfinished framed mechanical room.
  • Side view of an orange EKO Duo hybrid coal boiler and integrated fuel hopper in a concrete mechanical room.
  • Pellet Duo boiler with its combustion chamber and heat exchanger access doors open.
  • UNI wood boiler installation with water tank, copper piping, expansion tank, and manifold.
  • Side view of an EKO Duo boiler with closed access doors and digital controller in a mechanical room.

Installed in real homes and workshops

Customer Success Stories

We replaced our aging system with this MBtek wood boiler and the savings were immediate. It burns so efficiently, we're using significantly less wood to get much more consistent, powerful heat. It's transformed our monthly budget.

Slash Your Heating Bills

Maximize savings with high-efficiency automated wood chip combustion.

Product details

  • Hydronic-ready
  • 86% efficiency
  • Durable steel build
  • No electricity required

WOOD BOILER – 105K BTU (PRO 30)

High-efficiency manual-feed biomass boiler designed for off-grid and electricity-free operation, delivering reliable heating with clean combustion and thermostatic control for residential applications.

Key Benefits

  • Operates without electricity, ideal for off-grid installations
  • Burns wood and coal with high efficiency (86%)
  • Thermostatic air control automatically modulates combustion
  • Large firebox allows for extended burn time and fewer reloads
  • Compatible with thermosiphon systems (no pump required)

Specifications

  • Heating Capacity: Up to 3,000 ft²
  • Capacity range: 30–102 kBTU
  • Weight: 589 lb
  • Dimensions: 17.8 in W × 28.5 in D × 54.8 in H
  • Firebox Volume: 27.50 gal, 12.3 × 17.0 × 28.8 in
  • Log Length: Up to 17"
  • Fuel Type: Wood and coal
  • Origin: Made in Europe
Efficiency
86%
Output
30–102 kBTU
Heat area
3,000 ft²
Maximum water temperature
185 °F
Maximum working pressure
35 psi
Residential operating pressure
15 psi maximum
Test pressure
50 psi maximum
Minimum chimney draft
22 Pa
Water volume
11.89 gal
Water flow
5.72 GPM
Hydraulic resistance
2.18 psi
Connection
1½ in
Chimney diameter
6.25 in
Fuel load
27.50 gal
Firebox
12.3 × 17.0 × 28.8 in
Width
17.8 in
Depth
28.5 in
Height
54.8 in
Weight
589 lb
Heating surface
25.84 ft²
Minimum fuel consumption
17.19 lb/h
Fuel
Wood and coal

Complete the system

What Our PRO 30 - 105K BTU Works With

Apollo DHW80 stainless water heater tank shown from the front

Water heater tank

Store heat and make hot water

The combined buffer and indirect tank stores boiler heat and supplies household hot water — no separate water heater needed.

View details
Model
DHW80 · 80 gal
$3,058
$2,44620% off

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Complete your system

Answers

Frequently asked questions

Is PRO a wood gasification boiler?

No — PRO is a traditional, non-gasification wood boiler. It's the simpler, lower-cost option in MBTEK's wood-boiler line, built for buyers who want reliable off-grid heat without gasification-level controls.

Does PRO need electricity?

No. PRO is the only wood boiler in MBTEK's line that runs with zero electrical draw — it needs no controller, fan, or power supply, which makes it a fit for off-grid sites or areas prone to power outages.

Can PRO burn coal or briquettes?

Yes — PRO burns wood, coal, or briquettes, giving it more fuel flexibility than MBTEK's other wood-boiler families, which are wood-only.

Which PRO model should I choose?

PRO 11 covers up to 1,500 ft², and PRO 30 covers up to 3,000 ft². Choose based on your building's heating load — final sizing should account for heat loss, insulation, and climate.

Can PRO provide domestic hot water?

Yes — PRO can supply domestic hot water alongside space heating when paired with an indirect water heater tank such as the APOLLO DHW80.

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