ᐅ Building Drying: Is It Better to Turn Off the Controlled Mechanical Ventilation System in Summer?
Created on: 12 May 2017 17:29
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Barossi
Hello,
we want to dry out our building before moving in; also, the screed is not yet ready for covering (CM: 2.3).
We have two large construction dryers running. Should the already installed mechanical ventilation system with heat recovery (Zehnder Q450) be turned off or run at maximum during the current temperatures? (Currently just under 20°C (68°F) and about 80-90% humidity.)
Or is it better to run it at maximum only in the evening/night when the air is cooler? (At night around 10°C (50°F))
Best regards,
Barossi
we want to dry out our building before moving in; also, the screed is not yet ready for covering (CM: 2.3).
We have two large construction dryers running. Should the already installed mechanical ventilation system with heat recovery (Zehnder Q450) be turned off or run at maximum during the current temperatures? (Currently just under 20°C (68°F) and about 80-90% humidity.)
Or is it better to run it at maximum only in the evening/night when the air is cooler? (At night around 10°C (50°F))
Best regards,
Barossi
Barossi schrieb:
Hello,
this doesn’t make any sense in the current weather (daytime >20°C (68°F) and at least 80% humidity).
The installed construction dryers actually dehumidify the incoming outside air.
Best regards, Barossi With construction dryers using dehumidification machines, theoretically you don’t need to ventilate at all. You just empty the water daily (or depending on the size of the tanks) and that’s it. You can also do a thorough burst ventilation if you want.
We didn’t use construction dryers but instead left windows tilted open after the initial setting. That worked perfectly and caused no problems. It just took 2 weeks longer to dry, but we had a 6-week rental buffer anyway.
Instead of paying €500 for drying, we paid €500 in rent. Overall, it was definitely safer ^^ Of course, it also depends on the season and the building method.