Harold Kestenholz
Good points, Sylvan. Just because a unit was there before, it doesn’t mean it was installed properly then. The manufacturer’s literature does mention venting requirements. This would be a good time to double-check that they comply. It is not automatically a fact that a code inspector will look at a replacement job. The safety of these objects is very often compromised by inattention to detail and assumptions. There isn’t a mention here of where the items are. Garage and basement installations can require stands to keep them above the floor 18 inches with a drain pan. There are many questions here that can be asked.
