This is a different question. The other is specifically asking about the use of vinegar to clean a hvac system. This question is not about vinegar, it is about how to seal vents and if sealing is a problem for the hvac system.
I'm working on cleaning some smells out of car hvac system but a bit busy to be working on this at the moment. These smells are making me sick(I'm a sensitive person) however I need to use car in the meantime.
I can live without ac, heat etc so I though why not just seal the cabin vents with some tape as a temporary fix.
If you have ac set to off, heat on 0 etc does that mean the whole system is already cut off from the cabin so there is no need to tape everything? I notice you can push the vent covers around, what is the purpose of these, are they for closing/do they fully close vents? Basically is there a way ensure air is not coming in via the hvac system besides taping all vents?
If I do tape all vents and leave it like that for 2 months or so, could this introduce other problems that I may not be aware of right now?