In Cyprus the sand dust in the atmosphere is a frequent phenomenon. It enters the buildings through the open windows and doors and settles on all surfaces inside, creating an atmosphere of low hygiene. If the humidity of the air is high the sand dust can condensate and get stuck to the surface it sits upon, causing damages. Living in a Passive House (Passivhaus) in Cyprus you don’t need to keep open any windows. Thanks to a carefully designed ventilation system with high quality filters no dust is coming in the Passive House from outside. The ventilation system is designed…