Hello. We are having a new pool installed with heater. The Pentair installation documentation says not to install it within 36" of air conditioning unit. The contractor installed it within 12", but it is vented on the opposite side. I cannot find any other manufactures requiring this clearance, so how necessary it this? My A/C unit is elevated, so am not sure if that helps. I do have about 12-16" on the left that it could be moved, but wanted to get some thoughts.