After the repair, you definitely need to order duct cleaining in Richmond hill. I did not know about this before either. After the repair, which I had done 5 years ago, I washed the floor for a long time and did wet cleaning. After half a year, I was advised to order cleaning on the site
https://comfortclean.com/air-duct-cleaning-richmond-hill/ . And it helped. It turns out that there was a lot of costly dust in the air duct and it could not function normally.