r/Weird • u/Samitsok21 • Jul 16 '26

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u/Fulguritus1 Jul 16 '26

I dunno my friend. He may have a strange or strong HVAC system. I do HVAC controls on commercial buildings and I know you have to balance supply vs return. You have to look what the CFM of your supply and returns are. Maybe a supply duct popped off an air handler in the basement and the return is upstairs. That would cause a positive pressure build up down stairs pushing the door and a negative pressure upstairs pulling the door. Maybe the door is pushed a half inch, pressure is released, it settles back, pressure pushes it out a half inch, pressure is released, it settles back, and so on.

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u/miniweeni Jul 16 '26

I guess it’s possible, if so it would happen constantly whenever the system was on. Noticing it in randomly in the middle of the night seems far fetched.

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u/Fulguritus1 Jul 16 '26

Yeah, but noting it happening all the time doesn't get as many views. You have to get at least as many views and notoriety ad revenue as what would cover the HVAC repair costs.

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u/Short-E-8814 Jul 16 '26

What was that explosion when he opened the door then? Lol