Dual-flow ventilation in renovation projects: Zehnder launches the EVO range

The renovation increases the need for efficient ventilation.

In a context where homeownership is becoming more complex due to rising housing costs and reduced living space, the renovation market continues to grow in importance. Projects now focus as much on energy efficiency as on occupant comfort and indoor air quality.

In this context, Zehnder is expanding its dual-flow ventilation range with the EVO series. Designed for individual and multi-family dwellings, this new series has been developed to meet the integration challenges frequently encountered in renovation projects.

Compact units suitable for small spaces

The range includes two models: EVO 2 , offering a flow rate of up to 200 m³/h , and EVO 3 , up to 300 m³/h.

Their slim profile— 21 cm for EVO 2 and 27 cm for EVO 3 —and their light weight allow for installation in false ceilings, on walls, or under sloping ceilings in insulated attics when equipped with an enthalpy exchanger. This compactness facilitates their integration into homes where technical spaces are often limited.

An implementation designed for installers

Zehnder designed the EVO range to simplify installation operations on site.

The units feature adjustable elbows for easy network connection, 190° swiveling condensate drain connections, and remain compatible with existing Zehnder air distribution systems. Their design also allows for condensate drainage without tilting the unit, simplifying installation in challenging configurations.

Up to 84% heat recovery

The EVO units are equipped with a counter-flow heat exchanger with an efficiency of up to 84% energy recovery , with PHI certification.

Several configurations are offered to adapt the system to the characteristics of the building: standard exchanger, version with electric preheater for cold climates, enthalpy exchanger for better humidity management or combination of the two equipment.

Combined with high-efficiency motors and constant flow technology, these devices aim to maintain stable air renewal while controlling energy consumption.

Air quality adapted to the requirements of the dwelling

The EVO units are supplied with G4 filters ensuring continuous filtration of the incoming air.

The range also includes an automatic bypass for free cooling during the summer months, as well as an operating system designed to minimize noise. The entire system integrates with the Zehnder air distribution system to create a complete residential ventilation installation.

Configurable regulation according to needs

Unit management can be complemented by several optional wireless accessories.

The Zehnder EVO Sense RF controller allows for system commissioning and adjustments. The Zehnder EVO Switch RF provides access to four operating modes and notifies the system when filters need replacing. Humidity and CO₂ sensors can also be added to automatically adapt ventilation operation to the occupancy conditions of the dwelling.

With the EVO range, Zehnder targets renovation projects requiring a compact, adaptable, dual-flow ventilation system suitable for the constraints of existing buildings. This new offering broadens access to this type of ventilation while maintaining the expected functions in terms of heat recovery, thermal comfort, and indoor air quality.

Reference document: HVAC - Heating, Ventilation and Air Conditioning

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