It's pretty easy to temporarily "unseal" a house though - open doors/windows. A well sealed and insulated house takes less to cool too, though. It doesn't just

It's pretty easy to temporarily "unseal" a house though - open doors/windows. A well sealed and insulated house takes less to cool too, though. It doesn't just help in winter. Sadly, in central Kansas where I live, it regularly forgets to get cool at night. Last summer we did our corn silage chopping at night and slept in the day, as we were getting burned trying to operate equipment. At night it was still very hot and muggy. IIRC the dewpoint was in the mid-to-upper 80s F.