ComfoAir Fit 100
  • Home
  • ComfoAir Fit 100

ComfoAir Fit 100

The Zehnder ComfoAir Fit 100 is a compact and versatile ventilation unit - ideal for both new builds and refurbishment projects. The built-in heat exchanger provides excellent heat and moisture recovery. Tailored for small studios, holiday homes and apartments, it offers flexible installation options - integrated into the external wall with a flush-mounting box, on the walls, or on the ceiling. This versatile system is designed to save valuable living space. Paired with the specially designed Zehnder air distribution components, the entire Zehnder ComfoAir Fit 100 system delivers straightforward and effective indoor ventilation and guarantees a healthier living environment.
ComfoAir Fit 100

Available products

System Protection Filter Set – Zehnder ComfoFit 100 | Zehnder Original

System Protection Filter Set – Zehnder ComfoFit 100 | Zehnder Original

Filter set to protect your ventilation system against dirt and provide extra comfort at home - CRS (G4) / CRS (G4)
Catalogue number: 400100170
On stock
Product generally delivered within 2-5 working days
CZK
1,070.85
incl. VAT
excl. shipping fees
Get your product with a 15% discount
Subscribe and re-order automatically and periodically! (Offer exclusively for private customers)
CZK
910.22
1,070.85
incl. VAT
excl. shipping fees
Hygiene Filter Set – Zehnder ComfoFit 100 | Zehnder Original

Hygiene Filter Set – Zehnder ComfoFit 100 | Zehnder Original

Filter set for keeping your indoor air clean and protecting your ventilation system against pollution - ePM1 (F7) / CRS (G4)
Catalogue number: 400100180
On stock
Product generally delivered within 2-5 working days
CZK
1,156.76
incl. VAT
excl. shipping fees
Get your product with a 15% discount
Subscribe and re-order automatically and periodically! (Offer exclusively for private customers)
CZK
983.25
1,156.76
incl. VAT
excl. shipping fees

More to know about ComfoAir Fit 100

Recommended Editorial Content

To view this external content from YouTube, activate "Marketing" in the cookie consent settings that appear after clicking below.

Note: Activating this setting transmits personal data to third-party platforms. More in our Privacy Policy.


Filter Replacement Guide – Zehnder ComfoAir Fit 100

  1. Switch the unit to standby mode
    Use the control panel: press the (–) button until the unit goes into standby mode.
    → The fans will stop running.

  2. Open the filter covers
    Push the two filter covers upwards and then fold them forward to access the filter compartments.

  3. Remove the old filters
    Carefully pull out the old filters by their tabs and dispose of them properly.

  4. Insert the new filters

    • Pay close attention to the arrow markings on the filters:
      • Upper slot: Insert the ISO Coarse filter with the arrow pointing downwards.
      • Lower slot: Insert the ISO Coarse filter (or optional ISO ePM1 filter) with the arrow pointing upwards.
    • ⚠️ Only use Zehnder original filters to ensure proper performance and to avoid contamination or damage.

  5. Close the filter covers
    Fold the covers back upwards and slide them down until they lock securely in place.

  6. Switch the unit back on
    Restart the device by pressing the (+) button.
    Then select the desired fan speed or, if available, enable automatic operation via the sensor module.

  7. Reset the filter maintenance indicator
    Press and hold the (+) and (–) buttons simultaneously for about 3 seconds
    → The red filter maintenance LED will turn off (new cycle ~90 days).

✅ With these steps, you’ll ensure correct replacement and optimal operation of your ComfoAir Fit 100 ventilation unit.

More about Zehnder ComfoAir Fit 100

  • Versatile mounting: Wall-integrated or wall/ceiling-mounted options to suit varying installations.
  • Compact size and space-saving solution: Frees up valuable living space.
  • Fits Lean construction planning: The smart pre-installation option for the flush-mounting box makes the unit easy to install just prior to occupancy.
  • Easy retrofitting: Unit can be installed in refurbishment or renovation projects.
  • Invisible integration: The unit can be discreetly hidden in the exterior wall and elegantly concealed with the optional design cover, or by mounting behind a suspended ceiling.
  • High air performance enables application in apartments with demands up to 110 m3/h.
  • Built-in enthalpy exchanger: Eliminates the need for a condensate drain.
  • Installation reliability: Fool proof installation.
  • Comfort & energy saving: Whisper-quiet operation and low power consumption.
  • Convenient; easy to use and maintain.