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.
T
T_im_Norden5 Mar 2021 08:08This is intentional; under normal circumstances, the condensate is supposed to flow back into the unit and be drained away through the outlet there. Otherwise, it would run down the exterior wall of the house. The main issue is actually the pipe installation in the garage, where everything tends to remain in the lower section.
Bookstar schrieb:
Well, the design of that outlet. With Zehnder and similar companies, these problems do not occur.And you are really sure about that?No, a differently shaped outlet won’t help you because your “problem” is physical in nature and will resolve itself over time, as I described earlier.
Besides, you would need a combined one anyway... and here, Vallox’s models are already the better ones. I don’t think you want to completely change your piping because of an unfounded “problem.”
Besides, you would need a combined one anyway... and here, Vallox’s models are already the better ones. I don’t think you want to completely change your piping because of an unfounded “problem.”
Tx-25 schrieb:
Does anyone of you have different vents with a different shape that might have already solved the problem for me?Can’t you just install a regular vent or a grille there? I don’t see any reason to use such a poorly designed cover. A simple exhaust grille should work as well. However, it’s not certain that this will completely solve the problem. The garage might still be too cold, causing condensation in the exhaust area.The proper approach would be to implement targeted drainage of the exhaust duct.
Similar topics