Hello everyone,
I have an additional bedroom in the basement that is used quite often.
The builder installed exhaust air ventilation there, and in the adjacent storage room, they installed supply air.
1. He says this cannot be reversed anymore (the construction is almost finished).
2. He also says it is not a problem that the two rooms have been switched.
Are both of these statements correct? I would appreciate a prompt response, as I have a meeting with him early tomorrow morning.
Thank you very much for your help.
wangry
I have an additional bedroom in the basement that is used quite often.
The builder installed exhaust air ventilation there, and in the adjacent storage room, they installed supply air.
1. He says this cannot be reversed anymore (the construction is almost finished).
2. He also says it is not a problem that the two rooms have been switched.
Are both of these statements correct? I would appreciate a prompt response, as I have a meeting with him early tomorrow morning.
Thank you very much for your help.
wangry
Marvinius II schrieb:
Depending on the choice, the user of the bedroom will enjoy the odors.... And why should that be?!
On the one hand, there is exhaust air in the bedroom, and on the other hand, the exhaust air becomes outdoor air after passing through the heat exchanger. With plate heat exchangers, it is technically impossible for exhaust and supply air streams to mix. Even with rotary heat exchangers, any transfer of odors from exhaust to supply air is mostly theoretical. So where does this assumption come from?
Or did you mean that the incoming air is "contaminated"? Without knowing the floor plan, that is just speculation, since it is not even certain that the rooms are close to each other, and even if they are...
@ruppsn The issue is the "bad smell" in the room where the supply air enters, not the supply air itself. If the exhaust air is in the bedroom and the supply air is in the bathroom, and you flush the toilet, the odor, following the negative pressure, will travel into the bedroom. The same applies if smelly items are stored in the storage room. Then THAT odor will move toward the bedroom.
Technically, it doesn’t really matter; what’s important is that supply air is present. The direction doesn’t matter. And if the storage room contains normal household items, there is no problem with odors.
Therefore, I would take it easy about this and just add it to a list. If you ever need to address it, you can use that card.
Technically, it doesn’t really matter; what’s important is that supply air is present. The direction doesn’t matter. And if the storage room contains normal household items, there is no problem with odors.
Therefore, I would take it easy about this and just add it to a list. If you ever need to address it, you can use that card.
If the exhaust air is in the bedroom, then the unpleasant bathroom odors will pass through there. But that’s about it. If no one uses the toilet heavily at night, there shouldn’t be any problems with this.
However, there are completely different issues: KFW! If you are building with KFW support, the proper function of the ventilation system will be checked at the end (do you have a KFW inspector?). Such a replacement will definitely be criticized, and they will insist on improvements. Otherwise, KFW approval could be lost very quickly...
However, there are completely different issues: KFW! If you are building with KFW support, the proper function of the ventilation system will be checked at the end (do you have a KFW inspector?). Such a replacement will definitely be criticized, and they will insist on improvements. Otherwise, KFW approval could be lost very quickly...
Tom1607 schrieb:
@ruppsn The issue is the ‘stale air’ in the room where the supply air enters, not the supply air itself. If the exhaust air is in the bedroom and the supply air is in the bathroom, and you place a trash bin in the toilet, then the smell from it will follow the negative pressure and migrate into the bedroom. The same would apply if smelly items are stored in the storage room. Then THAT odor moves towards the bedroom. I wouldn’t want to completely rule that out, but as I mentioned before, without knowing the room layout and the air exchange rates, it’s difficult to assess. One thing is certain: a controlled residential ventilation system is not an extractor hood, meaning the airflow is quite low. Especially in a storage room, generally a low air change rate is set. If the total volume of the storage room is exchanged two to four times per day (which should be enough for that kind of room) and this air mixes with all adjacent rooms through transfer openings, I would assume the concentration of odors would decrease quite quickly. If the storage room is directly adjacent to the bedroom and is the only room from which air flows into the bedroom, I’d consider that scenario more likely. For me, there are just too many ifs.
And I’m not saying that this would be acceptable from a planning perspective or wouldn’t be considered a defect. I was only trying to reassure the original poster a bit rather than cause hysteria.
And if the OP actually detects onion smell in the bedroom at some point, they will need to adjust how the storage room is used accordingly. That doesn’t make the house unusable or uninhabitable. It is inconvenient, though, since it’s not what was originally expected.
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