Recovery ducts

Recovery ducts for air fi 100–160 for effective ventilation

Recovery ducts are a key component of any heat recovery ventilation system – whether it's a local recuperator or a smaller central system. Correctly selected recovery duct sizes of fi 100, 125, 150 or 160 directly affect the quiet operation, heat efficiency, and reliability of the entir...

Recovery ducts for air fi 100–160 for effective ventilation

Recovery ducts are a key component of any heat recovery ventilation system – whether it's a local recuperator or a smaller central system. Correctly selected recovery duct sizes of fi 100, 125, 150 or 160 directly affect the quiet operation, heat efficiency, and reliability of the entire system. In the offer from AKVAVENT.SI, you will find smooth ventilation ducts and insulated anti-vibration recovery ducts that reduce noise, condensation, and heat losses – ensuring long-term stable air recovery.

If you are planning a new air recovery system for your home or upgrading an existing system, choose ducts that are size-compatible with your air recuperator and wall passage. With the correct duct configuration for recovery, you reduce pressure losses, improve ventilation system efficiency, and achieve quieter operation – without compromise. You can order the ducts directly from the online store, along with the recuperator and relevant components.


Types of recovery ducts – smooth and insulated recovery ducts

In the recovery ducts category, solutions for the most common diameters are gathered: fi 100, fi 125, fi 150, and fi 160. The offer includes standard smooth ducts for recuperators, flexible ducts for installation in walls and ceilings, and insulated anti-vibration ducts for additional sound and thermal protection.

  • Smooth recovery ducts fi 100 and fi 125 – ideal for smaller and medium-sized local recuperators in bathrooms, bedrooms, and living areas. The smaller diameter allows for easier wall penetration and discreet installation.
  • Recovery ducts fi 150 and fi 160 – for more powerful devices with larger air flow, longer channels, or dual-channel recuperators. The larger diameter reduces pressure drop and improves heat recovery efficiency over longer distances.
  • Insulated recovery ducts – ducts with additional thermal insulation and anti-vibration protection that reduce fan noise and limit condensation in cooler parts of the building envelope. Recommended for penetrations through external walls and in cold unheated spaces.

By choosing the right duct for the recuperator, you protect the device, facade, and interior finishes, ensuring that air recovery operates smoothly and efficiently for a long time.


How to choose the right recovery duct based on the recuperator and space

When choosing recovery ducts, it’s crucial to match the duct diameter with the connection on the air recuperator and the channel length. For a typical local recuperator in the bathroom, the most commonly used is a recovery duct fi 100 or 100 mm recuperator, whereas for larger living spaces or dual-channel systems, fi 150 or fi 160 are appropriate.

  • Short wall penetrations (up to several tens of centimeters): standard smooth ventilation ducts provide minimal air resistance.
  • Longer runs or penetrations through cold spaces: an insulated recovery duct is recommended to reduce heat losses and prevent condensation in the duct.
  • Reducing noise and vibrations from the recuperator: use anti-vibration insulated duct fi 160 or the appropriate diameter that acts as a sound dampener and relieves the device.

If you are considering a whole building air recovery system and are interested in how to choose the best ventilation system, the correct choice of duct is a key step. In combination with the appropriate AIRA recuperator, SIKU recuperator or Venteurope recuperators, you can achieve a comprehensive and affordable air recovery solution for your home.


Technical specifications and recommended uses of recovery ducts

The table below presents typical diameters and recommended uses for recovery ducts in residential buildings. The final choice depends on the model of the air recuperator, the length of the run, and project requirements.

Duct diameter Typical usage Example of recovery Notes
fi 100 Smaller local recuperators, bathrooms, toilets Bathroom recuperator, mini recuperator Short wall penetrations, often without additional insulation
fi 125 Local recuperators in bedrooms and rooms Local air recuperator with higher flow Good balance between flow and noise, recommended for living spaces
fi 150 Larger units or longer runs Recovery for larger spaces, smaller central systems Lower pressure drop for longer duct, insulation recommended
fi 160 Powerful devices, dual-channel systems, penetrations through cold zones Local and central recuperators of higher class Ideal for isolated anti-vibration ducts, less condensation and noise

When designing ventilation systems with recovery, we also recommend reviewing the category of air vents and valves, as with the correct finishes you will ensure balanced airflow and an aesthetic appearance.


Connecting recovery ducts with other system elements

Recovery duct is just one component that comprises an effective air recovery system. For optimal results, combine properly sized ducts, a quality local recuperator, an appropriate external facade air vent, and suitable filters. This way, you reduce heat losses, improve heat recovery efficiency, and ensure stable operation even in demanding weather conditions.

If you are considering a subsidy, also check the page Eco Fund – Subsidy for Recovery, which describes the possibility of reimbursement for part of the investment in a ventilation system with recovery.

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