There are many manufacturers who offer heat recovery ventilation units. The most commonly known are the Dutch products: ORCON, Stock, Nedair, Ventro, Itho, Brink.

The best heat recovery products come from those countries where it is colder because they need to be more energy efficient.

These units undergo vigorous testing. The heat efficiency values given by other suppliers are only taken at a specific moment in the laboratory under ideal conditions, (152m/h, 25Pa) which in reality rarely occurs.

We could have chosen any brand, but having accessed the quality of all the heat recovery ventilation products we opted to represent VALLOX.