Ventilation Systems Back to overview page Intermittent extract fans & background vents Continuous mechanical extract Centralised Decentralised Continuous mechanical with heat recovery EXPLORE THE TITON HOUSE Select one of the options below: Window and Door Hardware Ventilation Systems Indoor Pollutants Back to overview page Intermittent extract fans & background vents Continuous mechanical extract – Centralised Continuous mechanical extract – Decentralised Continuous mechanical with heat recovery