The MPM Wood Plus 18 is a modern wood gasification boiler with 18 kW rated output for heating single-family homes and smaller commercial units.
The log wood boiler meets the requirements of the Ecodesign Regulation (EU) 2015/1189 as well as Class 5 according to PN-EN 303-5 and achieves energy efficiency class A+.
Designed for operation with a buffer tank, it offers efficient and low-emission wood heating.
Highlights / Benefits
⭐ 18 kW rated output – ideal for single-family homes and smaller commercial properties
⭐ Energy efficiency class A+ – EEI 119 for high seasonal efficiency
⭐ Class 5 according to PN-EN 303-5 – low emissions and Ecodesign-compliant
⭐ Wood gasification technology – high efficiency and clean combustion
⭐ Suitable for open and closed systems (max. 1.5 bar)
Product Description
Application Area & Target Group
The MPM Wood Plus 18 is a manually loaded wood gasification boiler for heating:
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Single-family homes
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Residential buildings
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Commercial pavilions
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Workshops
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Catering establishments
Operation is carried out with log wood (moisture ≤ 25 %). The boiler is intended exclusively for operation at rated output in conjunction with a buffer tank.
Everyday Benefits
The gasification technology separates degassing and combustion into two chambers. This achieves particularly clean and efficient combustion.
The integrated ceramic burner with controlled primary and secondary air ensures stable flame guidance.
The large loading chamber (approx. 70 liters / approx. 25 kg of wood) enables comfortable refilling intervals with a burn time of up to 5 hours.
Technology & Equipment
The boiler is made of certified steel boiler plate and features:
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Metal-ceramic burner
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Vertical flue gas channels with turbulence unit
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Mechanical draft regulator
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Connection for thermostatic safety valve DBV-1
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40 mm mineral wool insulation
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Thermometer in the upper area
The maximum operating temperature is 90 °C, the maximum permissible operating pressure is 1.5 bar.
Efficiency & Environment
The MPM Wood Plus 18 meets the requirements of the Ecodesign Regulation (EU) 2015/1189 and holds a valid certificate ED/1202/23.
Seasonal space heating energy efficiency: 81 %
Energy efficiency index (EEI): 119
Energy efficiency class: A+
Emissions at rated output (log wood ≤ 25 % moisture):
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PM: 15 mg/m³
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OGC: 19 mg/m³
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CO: 401 mg/m³
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NOx: 145 mg/m³
Compatibility & System Integration
Operation is possible in:
A buffer tank with a minimum volume of 800 liters is mandatory.
The return temperature must permanently be at least 55 °C to avoid low-temperature corrosion.
Recommended chimney requirements:
Technical Data
| Feature |
Value |
| Manufacturer |
MPM Projekt Marcin Nykiel |
| Model |
Wood Plus 18 |
| Product type |
Wood gasification boiler |
| Rated output |
18 kW |
| Energy efficiency class |
A+ |
| Energy efficiency index (EEI) |
119 |
| Seasonal space heating efficiency |
81% |
| Boiler class |
Class 5 (PN-EN 303-5:2021-09) |
| Thermal efficiency |
89% |
| Fuel |
Log wood ≤ 25% moisture |
| Loading chamber volume |
approx. 70 dm³ |
| Fuel quantity |
approx. 25 kg |
| Burn time |
approx. 5 h |
| Fuel consumption |
5.5 kg/h |
| Boiler water volume |
80 dm³ |
| Max. operating pressure |
1.5 bar |
| Operating temperature |
60–90 °C |
| Minimum return temperature |
55 °C |
| Flue gas temperature |
125–140 °C |
| Flue gas mass flow |
10.8 g/s |
| Height |
1050 mm |
| Overall width |
640 mm |
| Casing width |
550 mm |
| Overall length |
1070 mm |
| Length without chimney |
870 mm |
| Weight |
approx. 370 kg |
| Flow/return connection |
40 mm |
| Recommended buffer volume |
800 liters |
| CE marking |
CE 2023 |
Scope of delivery
Accessories / Recommendation (cross-selling)
For optimal operation, we recommend:
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Buffer tank from 800 liters
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Thermostatic anti-condensation valve 55 °C
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Safety valve / DBV-1
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Four-way mixing valve
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Chimney draft regulator
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Return temperature boosting system
Suitable components can be found in the Wood Heating & Accessories section on gemashop.de.
Installation & safety instructions
Installation and commissioning must only be carried out by qualified specialist personnel.
The boiler may only be operated with suitable log wood.
Permanent failure to maintain a return temperature of 55 °C leads to corrosion and loss of warranty.
The safety distance to combustible materials is at least 1 m.
FAQ
1. What type of wood may be used?
Log wood (hardwood) with a maximum moisture content of 25%, ideally 12–20%.
2. Is a buffer tank mandatory?
Yes, a minimum buffer volume of 800 liters is required.
3. Can the boiler be operated in a closed system?
Yes, with a safety valve, diaphragm expansion vessel, and overheating protection.
4. What efficiency class does the boiler have?
Energy efficiency class A+ with EEI 119.
5. What emission class does the boiler meet?
Class 5 according to PN-EN 303-5:2021-09 and Ecodesign 2015/1189.
6. What is the maximum operating pressure?
1.5 bar.
7. What minimum return temperature must be maintained?
At least 55 °C to avoid low-temperature corrosion.
Conclusion
The MPM Wood Plus 18 is a powerful, Ecodesign-compliant wood gasification boiler with high efficiency and low emissions.
A reliable solution for modern log wood heating systems with buffer tank.
