CMV: That's the solution when opening the windows is not enough.

​Opening the windows to air the house is essential to ensure the recycling of air but not enough to solve the problems in terms of quality. The sudden opening in fact produces a very short duration replacement which changes in an uncontrolled way the environment temperature and also does not prevent to eliminate the water vapor and the CO2 produced by the presence of people living in and from normal domestic activities. That's why controlled mechanical ventilation system is the perfect solution: it is in fact able to replace the stale air in a controlled way, reducing the capacity  or recovering the heat of the recycled one. Controlled mechanical ventilation integrates itself with the natural one and thus allows to ensure the wellness of the environment, even when the windows had been closed, prolonging the benefits and keeping them last during the day.