Ventilation unit Vaillant recoVAIR VAR 360/4 E with enthalpy counterflow-crossflow heat exchanger

The Vaillant recoVAIR VAR 360/4 E with enthalpy counterflow-crossflow heat exchanger is a mechanical ventilation unit engineered for continuous balanced supply and extract airflow with heat and moisture recovery. Designed for residential and light commercial spaces, the unit improves indoor air quality while reducing energy demand by recovering sensible and latent heat from extracted air. Its enthalpy exchanger combines counterflow and crossflow principles to transfer both temperature and humidity, supporting comfortable and controlled indoor environments.

Advantages

The unit recovers both heat and moisture, helping to maintain indoor humidity levels and reduce heating load. Balanced supply and extract fans provide steady ventilation rates and limit pressure imbalances. The enthalpy counterflow-crossflow heat exchanger offers higher recovery efficiency for sensible and latent energy compared with simple heat exchangers. Compact design and straightforward duct connections support integration into new and existing ventilation systems.

Suitable for

• Continuous whole-house ventilation in apartments and houses
• Ventilation of small offices and light commercial premises
• Buildings requiring humidity control alongside heat recovery
• Replacement or upgrade of basic mechanical ventilation systems

Key specifications

• Balanced supply and extract airflow configuration
• Enthalpy counterflow-crossflow heat exchanger for sensible and latent recovery
• Designed for continuous operation
• Compact casing suitable for ceiling or utility room installation
• Standard duct connections for integration with ventilation networks

How to use

Install the unit according to local ventilation standards and the manufacturer’s mounting guidelines, ensuring correct orientation and secure duct connections for supply and extract air. Connect electrical supply and control wiring to the building control system or dedicated controller to set desired ventilation rates and schedules. Ensure filters are fitted and accessible for regular inspection. Commission the unit by verifying airflow balance, checking heat exchanger function, and adjusting fan speeds as required to achieve targeted ventilation performance.

Usage recommendations

For reliable performance, schedule periodic maintenance including filter replacement and inspection of the enthalpy heat exchanger. Maintain clear intake and exhaust paths, and verify control settings seasonally to optimize energy recovery and indoor humidity levels.