The MPM Wood Plus 18 is a modern wood gasification boiler with a nominal output of 18 kW for heating single-family homes and smaller commercial units.
The log boiler meets the requirements of 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 storage tank, it offers an efficient and low-emission wood heating system.
Highlights/Advantages
⭐ 18 kW nominal power – 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
Area of application & Target audience
The MPM Wood Plus 18 is a manually fed 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
The operation is carried out with Firewood (moisture content ≤ 25%). The boiler is designed exclusively for operation at nominal output in conjunction with a buffer storage tank.
Everyday benefits
Carburetor technology separates degassing and combustion into two chambers. This results in 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) allows for convenient filling intervals with a burning time of up to 5 hours.
Technology & equipment
The boiler is made of certified steel boiler sheet and features:
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Metal-ceramic burner
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Vertical flue gas ducts with turbulence unit
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Mechanical train control
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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 Ecodesign Regulation (EU) 2015/1189 and possesses a valid certificate ED/1202/23.
Seasonal energy efficiency for space heating: 81%
Energy Efficiency Index (EEI): 119
Energy efficiency class: A+
Emissions at nominal output (firewood ≤ 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 storage tank with a volume of at least 800 liters is mandatory.
The return temperature must be at least 55 °C at all times to avoid low-temperature corrosion.
Recommended chimney requirements:
Technical data
| feature | Value |
| Manufacturer | MPM Project Marcin Nykiel |
| Model | Wood Plus 18 |
| Product type | wood gasification boiler |
| Rated power | 18 kW |
| Energy efficiency class | A+ |
| Energy Efficiency Index (EEI) | 119 |
| Seasonal efficiency space heating | 81% |
| boiler class | Class 5 (PN-EN 303-5:2021-09) |
| Thermal efficiency | 89% |
| fuel | Firewood ≤ 25% moisture |
| Loading chamber volume | approx. 70 dm³ |
| Fuel quantity | approx. 25 kg |
| Burning time | approx. 5 hours |
| Fuel consumption | 5.5 kg/h |
| Water volume boiler | 80 dm³ |
| Max. operating pressure | 1.5 bar |
| Operating temperature | 60–90 °C |
| Minimum return temperature | 55 °C |
| Exhaust gas temperature | 125–140 °C |
| Exhaust gas mass flow | 10.8 g/s |
| Height | 1050 mm |
| Total width | 640 mm |
| Wide cases | 550 mm |
| Total 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
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MPM Wood Plus 18 boiler
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User manual
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Assembly instructions
Accessories/Recommendation (Cross-selling)
For optimal operation, we recommend:
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Buffer storage tank from 800 liters
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Thermostatic anti-condensate 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 flow boosting system
Suitable components can be found in the wood heating section. & Accessories on gemashop.de.
Assembly & Safety instructions
Installation and commissioning must only be carried out by qualified specialists.
The boiler may only be operated with suitable firewood.
Sustained returns below 55°C will lead to corrosion and void the warranty.
The safety distance to flammable materials is at least 1 m.
FAQ
1.Which type of wood may be used?
Firewood (hardwood) with a maximum moisture content of 25%, ideally 12–20%.
2. Is a buffer storage tank mandatory?
Yes, a buffer volume of at least 800 liters is required.
3. Can the boiler be operated in a closed system?
Yes, with safety valve, diaphragm expansion vessel and overheating protection.
4. What energy 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 is the minimum return temperature that must be maintained?
At least 55 °C to prevent low-temperature corrosion.
Conclusion
The MPM Wood Plus 18 is a high-performance, Ecodesign-compliant wood gasification boiler with high efficiency and low emissions.
A reliable solution for modern log-fired heating systems with buffer storage.
