The answer is often 'No' in very many cases.
We take a simple example of a normal 70's villa on 1 level with 5 rooms & kitchen which is additionally insulated and has modern 3-glazed aluminum windows without ventilation. In the wet area there is a bathroom fan that starts when the light is switched on and runs for about 10 minutes after the light is switched off.
When we come out to the customer we do a "How is your house inspection" of the villa and measure the level of carbon dioxide. Then we will probably find that several of the rooms are in the upper range of 1200 - 2500 PPM. In addition, the heat does not spread to the room at the far end of the corridor and the air feels trapped.
We install an Airmove fresh air valve in the bedrooms and one in the living room. It ensures that we get fresh air into the villa. We are replacing the bathroom fan with an Airmove Flow, which has a constant exhaust air flow and is very quiet. In this way, the villa receives a constant exchange of air. To the room at the bottom of the corridor, where the heat did not reach, we install an Airmove 1.1 air circulator, which creates a circulation tunnel and causes an air flow out and into this room as well.
Mounted and ready such an installation costs approximately SEK 12,000 after root deduction.
In addition, you not only get a much nicer and more oxygenated living environment, in most cases you also get a better night's sleep with a reduced risk of suffering from the negative health aspects that hypoventilation can cause.
