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Efficient, versatile and reliable

DuoWIN

Combined heating with wood and pellets

4,3 - 30 kW

Firewood combined heating DuoWin

DuoWIN

Efficient, versatile, and reliable

Efficient

  • Up to 25 % more efficient in pellets operation – energy optimised (EnergySaver)
  • Automatic, intelligent fuel changeover detects when the wood gasifier is in burnout
  • Collect higher subsidies*

Versatile

  • Small space requirements - 4.19 square meters smaller than other combination devices.
  • Individual pellet feed, either manual or fully automatic.
  • PowerBoost function for short term higher heat demands up to 56 kW.

Reliable

  • Wear-free, maintenance-free, and robust ignition elements are included in the guarantee
  • Maximum security due to two fuels.
  • Two separate heat exchangers guarantee maximum security.
  • Pellet unit can be easily supplemented at a later time: wood gasifier LogWIN Klassik is pellet ready

*Germany: Collect two subsidies Austria: Collect up to 1,000 Euro more in subsidies

   
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Individual Pellet Feed

The DuoWIN can be equipped with either a manual or fully automatic pellet feed. The daily use container for the manual variant holds up to 107 kg pellets, significantly more than comparable combination boilers.

Two Separate Heat Exchangers

Both independent heat exchanger systems guarantee maximum security. The wood combustion chamber and the stainless steel pellet burner are not considered wearing parts and are included in the guarantee.

Smaller Space Requirement

With a 4.19 m² space requirement, including minimum clearances, the DuoWIN requires less space than other combination devices.

Wear-free Ignition Elements

The DuoWIN's ignition elements ignite silently, and are very robust and maintenance-free. They are also not considered wearing parts, and are included in a guarantee for up to 5 years.

More Power or More Efficience

The DuoWIN is available as either a comfort or an energy optimised variant: the PowerBoost function enables short term higher heat demands up to 56kW. Thanks to the EnergySaver, the DuoWIN's pellet operation is up to 25 % more efficient than conventional combination boilers.

Intelligent Fuel Switching

The hybrid boiler's automatic fuel changeover detects if the wood gasifier is in burnout. If there is too little energy available in the boiler or heat exchanger, the unit will change to pellet operation either automatically or after an individually adjustable time.

DuoWIN

Satisfaction in every detail

Intelligent fuel switching

The hybrid boiler's automatic fuel changeover detects if the wood gasifier is in burnout. If there is too little energy available in the boiler or heat exchanger, the unit will change to pellet operation either automatically or after an individually adjustable time.

Individual pellet feed

The DuoWIN can be equipped with either a manual or fully automatic pellet feed. The daily use container for the manual variant holds up to 107 kg pellets, significantly more than comparable combination boilers.

Two separate heat exchangers

Both independent heat exchanger systems guarantee maximum security. The wood combustion chamber and the stainless steel pellet burner are not considered wearing parts and are included in the guarantee.

More power or more efficience

The DuoWIN is available as either a comfort or an energy optimised variant: the PowerBoost function enables short term higher heat demands up to 56 kW. Thanks to the EnergySaver, the DuoWIN's pellet operation is up to 25 % more efficient than conventional combination boilers.

Wear-free ignition elements

The DuoWIN's ignition elements ignite silently, and are very robust and maintenance-free. They are also not considered wearing parts, and are included in a guarantee for up to 5 years.

Smaller space requirement

With a 4.19 m² space requirement, including minimum clearances, the DuoWIN requires less space than other combination devices.

   

DuoWIN

Customised solutions

Depending on your comfort requirements, you can choose between 2 different classes of comfort. Each of these comfort classes is available in 4 performance levels.

ModelPremiumKlassik
Pellet feedFully automaticper hand (daily use container 107 kg)
Heating surface cleaning  
WoodSemiautomaticSemiautomatic
PelletsFully automaticFully automatic
Ash removal  
Woodattachable ash pan (per hand)attachable ash pan (per hand)
Pelletsash pan (fully automatic)ash pan (fully automatic)
Fuel changeover standardFully automatic self recognitionFully automatic self recognition
   

DuoWIN

The fully automatic pellet feed

 

Windhager sets new standards in pellet feeds: the fully automatic suction system transports pellets especially gently to the DuoWIN. Whether storage room or tank, we have the appropriate system for every storage option.

Advantages:

  • Optimum security with up to eight separate removal points (suction probes) in the storage room.
  • Location of the storage room is independent of the boiler room.
  • Maintenance-free system
  • No moving parts or electrical wiring required in the storage room.
  • Fully automatic functions controls

More information on pellet storage can be found here.

   

DuoWIN

Technical data

The DuoWIN is available in four different characteristic forms. An overview of the technical data is provided here.

Model DW K18 K(P)15DW K25 K(P)21DW K25 K(P)26DW K 30 K(P)26
Rated thermal output      
Range - woodkW15 - 1815 - 2515 - 2515 - 30
PelletskW4,3 - 156,3 - 217,6 - 267,6 - 26
Boiler efficiency at nominal load Wood/Pellets%90,9/93,890,7**/93,990,7**/93,790,5/93,9
Filling volume Wood/PelletsLiter145/164145/164145/164145/164
Boiler dimensions H x W x Dmm1.393 x 1.100 x 1.492 (1.705*)1.393 x 1.100 x 1.493 (1.705*)1.393 x 1.100 x 1.494 (1.705*)1.393 x 1.100 x 1.495 (1.705*)
Total weight Wood/Pelletskg499/247***499/269***499/269***499/269***
Flue gas connection diametermm130130130130
Power consumption at nominal load Wood/PelletsW43/3349**/41**49**/4853/48
Wooden log dimensionsm0,50,50,50,5

* DuoWIN height with fully automatic pellet feed

** Interpolated from two values

*** The actual weight depends on the model and can be somewhat reduced during transportation into the installation room by removing flexible parts.