DUO Wall 50 m³/h Local Heat Recovery Ventilation Unit
DUO is a family of single-room, two-pass heat recovery units designed to provide fresh, filtered, and comfortable air in any indoor space. Thanks to a counterflow enthalpy heat exchanger with heat recovery efficiency of up to 91%, it improves indoor comfort while reducing energy losses, without the need for a dedicated condensate drain. It is suitable for both new construction and renovation projects, offering maximum architectural and system flexibility.
ENTHALPIC HEAT RECOVERY: HEAT AND MOISTURE RECOVERY WITHOUT THE NEED FOR CONDENSATE DRAINAGE
At the heart of the DUO family is a counterflow enthalpy heat exchanger , with an efficiency of up to 91% . In addition to recovering energy from the exhaust air, the enthalpy heat exchanger also helps manage humidity more effectively. Thanks to this technology , no additional drain hole is required for condensate drainage, which simplifies both installation and architectural integration.
Each unit handles up to 50 m³/h of airflow, recovering energy from the stale air extracted from the room and transferring it to the incoming fresh air before it is directed into the interior spaces. The result is more stable comfort, lower heat loss, and improved energy efficiency.
CLEANER, HEALTHIER, AND BETTER-FILTERED AIR
DUO does more than just ventilate: it actively improves indoor air quality. The filtration system protects the interior from outdoor pollution and also treats the exhaust air, while the ionizer helps reduce dust, pollen, allergens, and unpleasant odors, creating a healthier and more pleasant indoor environment.
The humidity control feature can, if necessary, automatically increase , while the nighttime quiet mode reduces the noise level while you sleep.
SIMPLE CONTROLS, CONVENIENT BUTTONS
The DUO product family is designed to be easy to use in any situation. Depending on the version, controls can be managed via built-in touch-sensitive buttons , an infrared remote control , a wired remote or Wi-Fi+ and integrate with the most popular smart platforms.
Its operating modes are designed to ensure everyday comfort: manual multi-speed ventilation, humidity control, automatic nighttime quiet mode, and easy management of air exchange based on the room’s actual needs.
The DUO product family was created to:
- Ensure fresh air circulation in every room with an airflow of up to 50 m³/h .
- Thanks to the counter-flow enthalpy heat exchanger, up to 91% of the energy contained in the exhaust air can be recovered.
- Filters both incoming and exhaust air, improving indoor air quality.
- Improve air quality through negative ionization to ensure healthier comfort.
- The complexity of installation is reduced due to the absence of a special condensate drain .
- Designed for installation in residential buildings or small commercial buildings, in both new construction and renovation projects.
ONE FAMILY, THREE DIFFERENT WAYS TO INTEGRATE IT INTO THE WALL
DUO has been developed to offer three different interpretations of the same single-room MVHR technology. Wall is the simplest version, designed for direct wall mounting. Slide is a recessed version designed to minimize the unit’s visual presence. Edge is a version intended for built-in installation, even in walls with limited thickness, starting at approximately 13 cm. 
COMFORT, LOW NOISE LEVEL, AND INDOOR AIR QUALITY
DUO units are designed to operate at multiple fan speeds and feature automatic nighttime noise reduction. When indoor humidity rises, they can automatically increase ventilation, while acoustic insulation against outdoor noise contributes to indoor comfort even in urban environments.
INTUITIVE AND USER-FRIENDLY INTERACTION
Duo Wall also features built-in touch control , while the DUO product family can be controlled via remote control, wired control, or Wi-Fi+, depending on the version and selected configuration. The interface is designed to be intuitive, offering special functions for daily ventilation, nighttime use, and humidity control.
