Atmos DC25GSE 25 kW Wood Gasification Boiler Log Wood Boiler

2026-03-05T13:08:02+01:00

Vendor: Atmos
Type: Wood carburet
Price: 6975.00 - 8280.00 (2 variants)

ATMOS DC25GSE Wood Gasification Boiler 25 kW

The ATMOS DC25GSE Wood Gasification Boiler is a powerful solid fuel boiler for the efficient combustion of firewood. With a rated heat output of 25 kW, this model is particularly suitable for single-family homes, larger residential buildings, or heating systems with higher heat demand.

Thanks to modern wood gasification technology, the energy of the fuel is optimally utilized. The ATMOS DC25GSE achieves high efficiency levels and meets the requirements of the BImSchV Stage II. The energy efficiency class is A+.

Highlights / Advantages

⭐ Wood gasification boiler with 25 kW output for larger single-family homes

⭐ Efficiency up to 92.5 % for efficient wood combustion

⭐ Energy efficiency class A+ for economical heating operation

⭐ suitable for firewood up to 530 mm in length

⭐ meets BImSchV Stage II for modern wood heating systems

Application Area & Target Audience

The ATMOS DC25GSE is a manually fed wood gasification boiler for efficient firewood heating in modern heating systems.

Typical application areas:

Single-family homes with higher heat demand

Renovation of existing wood heating systems

New builds with renewable heating technology

Heating systems with buffer storage

Heating systems with radiators or underfloor heating

Installation should be carried out by a qualified HVAC specialist.

Advantages in Everyday Use

Wood gasification boilers operate particularly efficiently because the wood is first gasified and then completely burned at high temperatures. This ensures optimal utilization of the fuel's energy.

This technology ensures:

high energy utilization of the fuel

reduced emissions

stable and consistent heat output

economical heating operation

The generous combustion chamber allows for convenient refueling and long heating intervals.

Technology & Equipment

The ATMOS DC25GSE is equipped with a suction fan that stabilizes the combustion process and supports the chimney draft.

The most important technical components include:

Suction fan

Boiler thermostat

Safety thermostat (STB)

Flue gas thermostat

Belimo actuator

Thermal discharge safety device

Operation is with dry firewood with a moisture content of approximately 12–20 %.

Efficiency & Environment

The modern wood gasification technology ensures efficient use of the fuel while simultaneously reducing emissions.

Energy efficiency class: A+

Boiler efficiency: up to 92.5 %

Meets BImSchV Stage II

This makes the ATMOS DC25GSE suitable for sustainable heating systems with renewable fuels.

Compatibility & System Integration

Wood gasification boilers are typically combined with buffer storage tanks to efficiently store the generated heat and distribute it within the heating system.

Typical combinations:

Buffer storage tank

Return temperature elevation

Radiator heating system

Underfloor heating

Thermal solar systems

Technical Data

Manufacturer | ATMOS
Model | DC25GSE
Product Type | Wood Gasification Boiler / Solid Fuel Boiler
Rated Heat Output | 25 kW
Useful Heat Output | 24.7 kW
Efficiency | 92.5 %
Energy Efficiency Class | A+
Fuel | Firewood
Max. Log Length | 530 mm
Filling Chamber Volume | 120 l
Water Volume in Boiler | 105 l
Max. Operating Pressure | 2.5 bar
Recommended Return Temperature | minimum 65 °C
Flue Gas Connection | 150 mm
Height | 1281 mm
Width | 680 mm
Depth | 1020 mm
Weight | 469 kg
Supply Voltage | 230 V / 50 Hz
Sound Level | 65 dB

Scope of Delivery

ATMOS DC25GSE Wood Gasification Boiler

Suction fan

Integrated thermostats and safety devices

Cleaning cover and maintenance components

Accessories & System Recommendations

For the efficient operation of a wood gasification boiler, the integration of additional system components is recommended.

Suitable System Components

Buffer storage tank

Return temperature elevation

Heating accessories

Installation & Safety Notes

Installation must be carried out by a qualified heating specialist. For safe operation, suitable hydraulic integration and safety fittings are required.

The minimum return temperature of 65 °C specified by the manufacturer must be observed.

FAQ

What is the output of the ATMOS DC25GSE?

The wood gasification boiler has a rated heat output of 25 kW.

Which fuel is used?

The ATMOS DC25GSE is operated with firewood. Dry wood with 12–20 % residual moisture is recommended.

How long can the logs be?

The maximum log length according to the manufacturer is 530 mm.

What energy efficiency class does the boiler have?

The wood gasification boiler has energy efficiency class A+.

Does the boiler meet legal emission requirements?

Yes, the ATMOS DC25GSE meets the requirements of BImSchV Stage II.

Is a buffer storage tank required?

Wood gasification boilers are typically operated with a buffer storage tank to efficiently store the generated heat.