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They are normally found in more modern airtight homes. However I am looking for a solution to ventilate the home without having to rely on simply having holes in the walls. That's why I'm looking into MVHR systems, also open to other ideas.

Hi, Thank you for your reply. I sealed up the passive vents in the bedrooms with the intention of installing a Mechanical Ventilation Heat Recovery (MVHR) system to allow me to ventilate the house while recovering heat. From an energy performance point of view passive vents are the worst as...

Hello beautiful people of DIYnot forum. First post here but first of many no doubt. My next project will be tackling the condensation problem I'm facing. I've almost completed a new bathroom and running a bath the enter room is soaked in water and I've got heavy condensation forming on the...