Best Product of the Year - 2014

ComfoXL 800-6000

The Next Generation of Ventilation Units

The Zehnder ComfoAir XL series is the next generation of ventilation units with heat recovery for multiple-family houses and commercial buildings. The Zehnder ComfoAir XL series comprises 6 models with air volumes from 800 to 6,000 m³/h and heat recovery of up to 90%.

Zehnder ComfoAir XL: Facts and figures

More than 40 years of experience in the development and production of ventilation units provides the basis for well-conceived products and high-benefit systems at Zehnder, offering energy efficiency, comfort, health, user-friendliness and perfectly matched individual components. The ventilation system’s supply and extract air are controlled by the Zehnder ComfoAir ventilation units.

The Zehnder ComfoAir XL series was developed in close cooperation and in compliance with the guidelines of the Passive House Institute.


  • Volume flows from 800 to 6,000 m³ (6 models) for indoor and outdoor installation guarantee the optimal solution
  • Customer - specific configuration of the ventilation unit with pre - heating, post - heating and cooling register for high operational reliability and a comfortable indoor climate
  • Integrated, air - tight bypass in the extract air for free night time cooling in the summer and a comfortable indoor climate
  • Air - tight closure of outdoor air flaps and exhaust air dampers for maximum operational reliability integrated in the ventilation unit (optional)
  • Highly-insulated panels connected with dual seals, and nothermal bridges ensure minimum leakage
  • Passive House certified
  • High-efficiency EC fans ensure lowest energy consumption for maximum energy saving
  • High-efficiency heat exchangers with up to 90% heat recovery for maximum energy saving
  • Combined lock and hinge system enables fast and easy access for cleaning and maintenance
  • ComfoXL 800-6000

    The Next Generation of Ventilation Units

    About Us

    Fantech, the industry leader for 45 years and continues to be the forefront of fan and acoustics technology by developing and implementing new and innovative products for virtually every air movement and ventilation need.

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