Can the air sucked out by an exhaust fan from a room go back in through an open window on the second floor of the house? - Quora
When my over-the-range microwave's vent fan is on, it blows hot air from the vents above it into the kitchen. Is it supposed to do that rather than out of the house?
![Noticed we have cold air coming down the vent when it's not on, is this to do with the holes at the sides or possibly some other cause? : r/homeimprovementideas Noticed we have cold air coming down the vent when it's not on, is this to do with the holes at the sides or possibly some other cause? : r/homeimprovementideas](https://preview.redd.it/noticed-we-have-cold-air-coming-down-the-vent-when-its-not-v0-4fcaiy7kb1qa1.jpg?width=640&crop=smart&auto=webp&s=a8596a1707be0bd2f52e04a4f2af5495af144d98)
Noticed we have cold air coming down the vent when it's not on, is this to do with the holes at the sides or possibly some other cause? : r/homeimprovementideas
![bathroom - How can I prevent cold air from dropping down my bath fan duct? - Home Improvement Stack Exchange bathroom - How can I prevent cold air from dropping down my bath fan duct? - Home Improvement Stack Exchange](https://i.stack.imgur.com/RdaHX.png)
bathroom - How can I prevent cold air from dropping down my bath fan duct? - Home Improvement Stack Exchange
![You can see my fan setup in case. Is top right exhaust fan pulling fresh air coming from front top fan? Should i remove it soo CPU cooler can pull more air? : You can see my fan setup in case. Is top right exhaust fan pulling fresh air coming from front top fan? Should i remove it soo CPU cooler can pull more air? :](https://preview.redd.it/isz8j72eumk71.jpg?auto=webp&s=ce98ca3227b8f80a871001529170444b4fafd928)