Have to ask: everyone talks about HRVs and ERVs “bringing in fresh air” but if you live out west (AB or BC), the outside May-Sept is garbage full of smoke. How to proceed? Don’t want to change HEPA filters every two weeks in an ERV or something like that.

Do I have to make sure I ask for the Holmes inspection/certification for the warranty to work? You know like those poor saps who bought the Holmes endorsed new homes, and you washed your hands of them