Dual-flow ventilation unit COMFOAIR FLEX

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Overview
The Zehnder ComfoAir Flex has been developed as an ideal solution for apartments and small dwellings where efficient use of living space is important. Its compact design (minimal dimensions 1068 x 868 x 299 mm L x W x H) enables space-saving installation in suspended ceilings. The unit delivers air volumes up to 250 m³/h at an external pressure of 200 Pa, providing a comfortable and healthy indoor climate. The ComfoAir Flex features Zehnder's quiet fan technology, a custom-made heat exchanger for excellent energy efficiency and very low electrical consumption, and high-quality components for reliable, durable operation.

Key features

• Compact ceiling-mounted design for installation in suspended ceilings
• Air volume up to 250 m³/h (at 200 Pa external pressure)
• Minimal dimensions: 1068 x 868 x 299 mm (L x W x H)
• Proven quiet fans and low casing radiation for an incredibly quiet noise level
• Custom-made heat exchanger for high heat recovery and low energy consumption
• Enhanced filter concept: standard ISO Coarse (G4) filters for supply and extract air; optional ePM1 (F7) filter for pollen-free fresh air
• Time- and flow-based filter replacement alert
• Built-in WiFi connection and control via the Zehnder ComfoControl App

Focus benefits

• Multiple installation options: four turnable bends, adjustable mounting brackets, and left/right orientation options for flexible ceiling installation
• Space-saving design enabling harmonious integration into apartments
• Energy-efficient: clever fan and flow control technology to optimize airflow and lower noise
• Excellent comfort due to low noise levels even at full operation

Additional benefits

• Climate Switch® technology ensures automatically adjusted indoor climate all year round
• Reduces pollutants entering the home via enhanced filter concept
• High level of heat recovery combined with very low energy consumption
• Humidity recovery (enthalpy exchanger) to reduce excessively dry or humid air — available (announced) 2022
• Flexibility and security for planning: one unit combines right and left orientation; orientation can be changed via the ComfoControl App
• Quick and easy commissioning with constant air flow and guided assistance via the ComfoControl App

Technical specifications

• Model family: ComfoAir Flex (product designation: ComfoAir Flex 350)
• Nominal dimensions (L x W x H): 1068 x 868 x 299 mm
• Maximum air volume: up to 250 m³/h at 200 Pa external pressure
• Filter concept: standard ISO Coarse (G4) filters for supply and extract; optional ePM1 (F7) filter available
• Filter alert: time- and flow-based filter replacement notification
• Heat recovery: custom-made heat exchanger for high efficiency
• Fan technology: very low-noise fans optimized for low casing radiation and low electrical consumption
• Installation: ceiling-mounted, 4 x 45° turnable bends, adjustable mounting brackets, left/right orientation
• Connectivity & control: built-in WiFi; control and commissioning via Zehnder ComfoControl App
• Additional function (announced): enthalpy exchanger for humidity recovery (availability announced 2022)