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This is an old house in renovation that can not accommodate the air in the dry rooms joinery because they are arched! Is it possible to use as an alternative the old ventilation of the chimneys suprimées located in the lower part or should you anticipate them at the top? knowing that these two pieces are 15 m2 what diameter of tube should be provided? A hygrothermal wmc being provided for mouths in the kitchen, bathroom and toilet, which system should I provide in my outdoor air in order to limit cold air?

Given the constraints you mention, I think you would benefit from installing an overpressure ventilation system, also known as mechanical ventilation by insufflation, by drilling ventilation holes directly into the masonry. Consult our sheet Install a central air handling unit.

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