Intermittent ventilation, otherwise known as local extract fans, operate intermittently under either occupant or automatic control. They are installed through walls, windows or ceilings and are fitted within wet rooms to provide rapid extraction of moisture and other pollutants.
Mechanical extract ventilation
Mechanical extract ventilation is a ventilation system designed to continuously extract air from wet rooms. There are two types of MEV available, centralised (cMEV) whole house systems and de-centralised (dMEV) through wall solutions.
Mechanical ventilation with heat recovery
Mechanical ventilation with heat recovery is a continuous, balanced ventilation system with heat recovery capabilities, combining supply and extract ventilation in one unit for developments with low air permeability.