Hello, I’m struggling to control the condensation buildup we’re experiencing. The ducts for our ventilation system pass through the utility room wall into the garage and from there through the wall to the outside. We have a double outlet side by side. Condensation always forms on the exhaust hood, as shown in the pictures.
About half a liter of water accumulates quickly, which then collects inside the duct. I only noticed this when it started dripping in the garage (where the duct meets the exterior wall).
At first, I thought it was rainwater because there was so much water inside the duct. In a test, water also entered the duct when I poured water over the cover from above. I therefore screwed a metal sheet over it. The metal sheet extends outward to prevent driving rain from entering.
I’ve also already screwed the cover at an angle so most of the water runs off the front. Inside the cover, I applied a thin silicone bead to prevent water from flowing back.
Of course, the manufacturer has already been involved here. They said they had never seen anything like this before.
No condensation forms on the duct itself; it is always dry when I check. It’s the exhaust hood that causes the condensation.
What are your ideas? Different exhaust hood? Do you know of anything like this? The system is from Vallox.
About half a liter of water accumulates quickly, which then collects inside the duct. I only noticed this when it started dripping in the garage (where the duct meets the exterior wall).
At first, I thought it was rainwater because there was so much water inside the duct. In a test, water also entered the duct when I poured water over the cover from above. I therefore screwed a metal sheet over it. The metal sheet extends outward to prevent driving rain from entering.
I’ve also already screwed the cover at an angle so most of the water runs off the front. Inside the cover, I applied a thin silicone bead to prevent water from flowing back.
Of course, the manufacturer has already been involved here. They said they had never seen anything like this before.
No condensation forms on the duct itself; it is always dry when I check. It’s the exhaust hood that causes the condensation.
What are your ideas? Different exhaust hood? Do you know of anything like this? The system is from Vallox.
Bookstar schrieb:
Can’t you just install a standard outlet or a grille there?We actually have a double outlet here. That’s why I would avoid screwing on a standard attachment. The shape of the Vallox exhaust grille is designed to prevent thermal short circuits.@Mycraft I don’t think this is a minor issue. Our ventilation system allows us to monitor the humidity levels in our house. Currently, we have a humidity of 35 to 55%. Of course, this issue is resolved in the summer. But I don’t want to deal with water in the duct every winter. I don’t believe it will improve on its own.
Maybe I’ll wait until after summer and keep drainage for the duct in mind for next winter.
There isn’t really anything to understand here, and as you can clearly see, both of you have little knowledge of building physics and even less of ventilation systems.
The fact that neither of you understands anything, not even yourselves, can be clearly followed from this discussion.
The fact that neither of you understands anything, not even yourselves, can be clearly followed from this discussion.
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