Can Reno house during pregnancy/first trimester?

Im living with my in-laws, waiting for our house to be ready next year. Recently the aircon units broke down more frequently, its causing all of us (including me and hb) a lot of inconveniences and in laws are thinking of replacing all the old aircon which may involve repiping and more extensive works to the house. Also better for me and the baby in the future. But I was warned by others that it is a bane to do any major works to the place I stay throughout my pregnancy. I must avoid it at all cost (not just keep away from the Reno site during Reno period but if Reno, I should totally move out of the house for the rest of my pregnancy??). How serious is this?? What should I do to deal with both side of things I feel bad for causing inconvenience to the household but I can’t ignore what I heard about the pantang for the sake of the baby… #firsttimemom