My HVAC system actually has reverse suction

My good buddy has a corgi dog and those dogs shed a great deal of fur.

I was going to see her the other day and she said she wished someone would invent a self-vacuuming floor! She wasn’t talking about a robot vacuum. She already has one of those. She seemed to think there should be flooring that is made of fine mesh and that it has a suction every hour or so to pull the fur, dirt, and debris out. That sounds like a lovely idea if it worked well. What I didn’t mention is that my floor already kind of does this! You see, our Heating & A/C air duct is under the floor in our household. For about 2 seconds, just before the furnace or air conditioner device kicks on, there is a reverse suction at the HVAC vents. So dirt and junk get pulled into our HVAC duct system. I know for a fact that this is not normal, and unlike the vacuum flooring idea, this Heating & A/C thing is a malfunction. I don’t really believe that pulling dirt and stuff into our Heating & A/C device is helping our Heating & A/C device out either. I entirely should call up our Heating & A/C device provider and ask them to come out and take a look at our heating and cooling to find out why it has a reverse suction just before kicking on. I should genuinely have them do a great air duct cleaning while they are here too! Once our Heating & A/C device is laboring as it should, then I can get started with planning our self vacuuming floors. I entirely love the idea and I don’t see why it wouldn’t actually work.