Sounds like you have some great snakes there. As far as the house goes...anytime you have an old house, it's cold as anything...my house is not really old...I mean it isn't turn of the century or anything...but it has some years on it, and hard wood floors...so it can get pretty cold at night if the heat isn't turned up. Plus, we have heat vents in the walls...so if there is furniture blocking the vents...that can cause problems too. Of course it is not nearly as cold here as it is where you are...dang!