That worked, that's a HRV, what it it's 100° outside? How does an ERV work and when do you use that? In moderate climates do you install both a HRF and an ERV?
A lot of commercial buildings from the 70s have no openable windows and constant blowing air, I have an engineer located in one of those and I hate to spend time with him with the constant air blowing, I once belonged to gym and they had three of those large 3' diameter fans behind the stairmaster section, women were constantly turning them on and men were constantly turning them off, one guy announced that he was quitting and joining another gym, I asked him why and he said: "One word, fans", I understood.