Contact Us
English EN
Search

What are you looking for?
    Cotes Hybrid CH22
    Request a quote
    Cotes Product Image_CH22_Hero Image_12122025
    WebSite Product Images 1000x1000 CH22
    Product Thumbnail 1000x1000 How DHU works
    Cotes Product Image_CH22_Hero Image_12122025
    WebSite Product Images 1000x1000 CH22
    Product Thumbnail 1000x1000 How DHU works
    Cotes Hybrid

    CH22

    Hybrid adsorption dehumidifier for installations without regeneration air ducting   

    The CH22 is part of the Cotes Hybrid product family — adsorption dehumidifiers designed to operate without external regeneration air ducting.

    Unlike conventional adsorption systems, the CH22 uses a hybrid drying principle, combining adsorption dehumidification with internal condensation. Moisture removed from the rotor is condensed inside the unit and discharged as liquid water through a drain connection.

    This allows installation in environments where external ducting is difficult or undesirable.

    Explanation of Naming

    The product designation follows Cotes naming logic:

    • C – Cotes adsorption platform
    • H – Hybrid operating principle
    • 22 – Capacity class within the Hybrid family

    The Hybrid designation reflects the combination of adsorption drying and internal condensation.

     

    Position within the Cotes Hybrid family

    The CH22 represents the compact model within the Cotes Hybrid range.

    The Hybrid family consists of two units:

    • CH22 – compact closed-circuit adsorption dehumidifier
    • CH26 – higher-capacity hybrid unit for larger air volumes

    Hybrid units are typically selected where installation conditions prevent the use of conventional adsorption dehumidifiers that require regeneration air exhaust.

    Typical constraints include:

    • Limited access to external walls
    • Retrofit installations in existing buildings
    • Noise-sensitive indoor environments
    • Technical rooms without ventilation infrastructure
    Read more + Read less -
    Closed-circuit drying operation: Moisture removed from the rotor is condensed internally, eliminating the need for external regeneration air ducting.
    Hybrid adsorption principle: Combines adsorption drying with condensation-based moisture removal on the regeneration side.
    Simplified installation: Requires only a drain connection for condensate removal rather than external air ducting.
    Compact system footprint: Designed for installation in confined technical spaces where duct routing is restricted.
    Low-noise operation: Designed for indoor environments where noise-sensitive operation is required.
    Stainless-steel cabinet construction: Provides durability and corrosion resistance suitable for technical and indoor environments.
    Request a quote

    TECHNICAL DATA

    Model DRY AIR (M3/H) REGENERATION AIR (M3/H) CONNECTED LOAD (kW) MOISTURE REMOVAL CAPACITY (KG/H) DIMENSIONS (WxDxH) DATASHEET PRODUCT MANUAL
    CH22 115 N.A. 0.75 0.38 425 / 311 / 441 Datasheet
    English Dansk Deutsch
    Request Manual
    CH26 225 N.A. 1.6 0.6 533 / 351 / 673 Datasheet
    English Dansk Deutsch
    Request Manual
    check

    CLOSED-CIRCUIT OPERATION   

    The regeneration air remains inside the unit and moisture is removed through internal condensation rather than external exhaust airflow.

    check
    APPLICATION KNOW-HOW

     Designed for installations where external ducting is not feasible, including technical rooms, archives, laboratories and retrofit environments. 

    check
    ADSORPTION DRYING PRINCIPLE 

    Rotor-based adsorption dehumidification ensures stable moisture removal independent of refrigeration-based cooling systems. 

    check
    COMPACT HYBRID DESIGN  

    Compact stainless-steel construction allows installation in constrained spaces with minimal infrastructure requirements. 

    Frequently Asked Questions

    For our full FAQ section you can go to www.cotes.com/FAQ 

    On this page we highlight some of the more frequently asked questions from customers.

     

    When is a hybrid dehumidifier used instead of a conventional adsorption unit?
    open close

    Hybrid units are typically selected when regeneration air cannot be ducted to the outside. The CH22 allows adsorption drying in installations where external ducting is restricted or not possible.

     The regeneration air loop remains inside the unit. Moisture released from the rotor is condensed internally and removed through a drain connection. 

    Hybrid systems still rely on adsorption drying using a rotor. The difference lies in how regeneration moisture is removed: via internal condensation rather than external exhaust air.

    Humidity control reduces condensation, limits corrosion risk and stabilises insulation resistance during turbine restart after standstill.