Most home builders will install central vac rough-ins in all their new constructions. Homeowners will often choose central vaccum system because it's practical in so many ways. One of the selling features is that you don't have to pull a canister around which in turn removes air pollution from being released from the canister and avoids potential allergy symptoms. That said, if the central vac canister isn't installed correctly your air quality may still be affected. Unfortunately many installer...