Air conditioning new building experiences?

In general: runtime, runtime, runtime. Quickly cooling down before going to bed and then turning it off doesn’t work.

We do this every evening in our bedroom and it works very well, so why not?

Best regards
Sabine

Because walls and furniture are still warm and the room temperature returns to the initial level after two hours. But if that works for you, you can certainly continue doing it that way. I just want to warn others that it usually doesn’t have the desired effect.

Because walls and furniture are still warm and the room temperature is back to the initial level after two hours. But if that suits you, you can gladly continue like that. I just want to warn others that it usually does not have the desired effect.

then maybe that is because cool air comes into the bedroom at night through the ventilation system and it does not warm up as much.

Best regards Sabine

then maybe it's because cool air comes into the bedroom through the ventilation system at night and that's why it doesn't warm up as much.

LG Sabine

Uh, no, not at all. Unless you have a tenfold air change and active cooling as well ;)

we do that every evening in our bedroom and it works very well, so why not?

Best regards Sabine

Because that can’t work. You have to cool before the place gets warm. Just measure the temperatures, then you’ll see how warm(cold) it is.

The ventilation system shovels the warm air into the house. In addition, the masonry heats up. Since everything is well insulated, the heat is retained very well inside. The air exchange rates of a normally designed ventilation system are not suitable for cooling. The only solution here is to turn off the ventilation during the day and cool with a split unit. Alternatively, install a very large ventilation system (with sufficient supply and exhaust air valves), a refrigeration unit, a cooling buffer, and a chilled water coil. If the unit is reversible, it can also be used for heating. However, this is uncommon in single-family houses.