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Underfeed combustion 250 - 1000 kW



The modern ENDRESS USF-W wood combustion system is designed for an output of 250 to 1000 kW and impresses with its high efficiency.



Suitable for dry fuels such as wood chips, wood briquettes, pellets, sawdust, sanding dust and shavings - especially also for fuels of classes 6 and 7.

Ingenious design

Horizontal tube heat exchanger

High thermal performance: Large-volume, high-performance heat exchanger in 3-pass design


Automatic cleaning

High comfort: The permanent removal of ash deposits from the heat exchanger and combustion trough ensures a consistently high boiler efficiency, prolongs the cleaning intervals and saves time as well as cleaning material.


4-sided ventilated combustion chamber

High efficiency: Clean combustion by virtue of 2-sided, controlled ventilation of the cantilever combustion chamber made of high-temperature ceramic cement. The 15 mm thick steel firebox retort has an automatic ash discharge and a standard ash container


High temperature resistant grate bars

Long service life: Grate bars of the underfeed retort are made of high-temperature resistant cast stainless steel; with 27 % chrome content.


Automatic ignition

Comfortable heating: A sophisticated ignition programme, in conjunction with the temperature-controlled ignition fan, ensures simple, material-saving heating.


High quality drives

Made in Germany: The stoker screw and ash discharge are driven by high-quality geared motors.


Technical data

* Maximum performance when using automatic heat exchanger cleaning
Type USF-W power kW length (mm) width (mm) height (mm) weight (kg) 250 200-250* 1950 860 1490 4250 150 260-150* 2250 860 1490 5350 180 400-1802000 860 1790 7350 210 600-210* 2000 1760 1790 9600 300 900-3002950 1760 3550 13100

Attachment parts

Filter technology

Under all circumstances, the emissions from your wood combustion system remain below the current…

Conveyor technology

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Heating circuit control

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Energy data collection

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ENDRESS SNCR process for nitrogen oxide reduction.

Underfeed combustion

USF-S 100-300 kW

The modern ENDRESS USF-S wood combustion system is designed for an output of 100 to 300 kW and impresses with its high efficiency.


Do you have any questions or would you like to receive individual advice from our professionals?

ENDRESS adapts your new combustion plant individually to your annual heat requirements, the type and quantity of waste wood produced and the space available on your site. Each offer is combined with a specific installation proposal.

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