Ventilation unit Vaillant recoVAIR 360/4 counterflow-cross heat exchanger with bypass and digital controller

The Vaillant recoVAIR 360/4 counterflow-cross heat exchanger with bypass and digital controller is a residential mechanical ventilation unit designed to provide balanced supply and extract air with heat recovery. The unit integrates a counterflow-cross heat exchanger to transfer thermal energy between outgoing and incoming air streams, and a bypass for summer ventilation or rapid cooling. The digital controller allows programming and monitoring of ventilation modes and basic performance settings. This configuration is suitable for continuous ventilation of apartments, detached houses and small commercial spaces where controlled fresh air supply, extraction of stale air and energy-efficient heat recovery are required.

Advantages

The counterflow-cross heat exchanger offers efficient heat recovery by combining features of counterflow and cross-flow designs, improving seasonal efficiency while limiting thermal bridging. The integrated bypass enables passive summer or night cooling without heat recovery when outdoor temperatures are favorable. The digital controller provides straightforward adjustment of ventilation rates and timed operation, supporting regular maintenance cues and simple diagnostics. Compact design and residential-focused airflow capacity make the unit compatible with typical ducting layouts used in homes.

Suitable for

• Continuous mechanical ventilation of apartments and family houses
• Ventilation with heat recovery to reduce heating losses
• Small commercial premises such as offices or consultation rooms
• Retrofit projects where a compact ventilation unit is required

Key specifications

• Heat exchanger type: counterflow-cross (combined counterflow and cross-flow characteristics)
• Function: balanced supply and extract air with heat recovery
• Bypass: integrated for summer/night cooling or bypass operation
• Control: digital controller with programmable ventilation modes and basic diagnostics
• Application: residential and small commercial ventilation systems
• Design: compact unit intended for concealed installation in service spaces or utility cupboards

How to use

Install the Vaillant recoVAIR 360/4 in accordance with local ventilation standards and the manufacturer's installation instructions, ensuring correct duct connections for supply, extract, exhaust and outdoor air. Configure the digital controller to match occupancy patterns and indoor air quality requirements: set continuous background ventilation rates and boost modes for periods of higher pollutant or moisture generation. Use the bypass function during warm periods to allow direct outdoor air supply without heat recovery. Follow scheduled filter inspections and cleaning intervals to maintain airflow and heat recovery performance.

Usage recommendations

For optimal performance, combine the unit with appropriately sized ductwork, correct balancing dampers and regularly replaced filters. Commission the system after installation to verify airflow rates and controller settings. Use the bypass selectively when outdoor temperatures are lower than indoor temperatures for cooling purposes, and avoid bypass use during cold weather to preserve heat recovery efficiency.