Hi, I just recently had central air installed in my home. I have a handler for my 1st floor, and an air handler for my basement. Each floor is about 1200 sq feet. I also wanted an erv recovery system installed on each of my floors, but my HVAC guy only installed 1 erv in my basement. My 1st floor is sheet rocked, taped, sanded, and primed already and there is no room in the closet where my handler is located on the 1st floor for an ERV system.. My hvac people installed a trane TERVR100 model erv system in my basement.. He said he would reimburse me $$$$ and tie the erv system in the basement to the air handler on the 1st floor as well as the handler in the basement. Would that work? And will it be sufficient or do I need a bigger erv system for it to work properly on 2 of my floors? Any feedback will be greatly appreciated, thanks!