Got lucky and replaced a 20 + yr old 12,000 btu with a brand new 15,000 btu window unit in early spring. Compared to central it's loud but cools the whole mansion down. The carefully cultivated locust forest (bumble bee sanctuary) is a significant help. The canadian smoke and heat/humidity has kept me inside too much this summer.There's something to be said for window units. Bought our first 2 in 1972, big heavy Philco Fords, built like tanks. Paid $200 each-I think. Each gave us 20 years, run about 4 months out of the year. One thing I liked about those 2, the filter was just a piece of mesh, it got too dirty, just cut a new one. Came home one summer night 12 years ago, the PRC-made GE in my bedroom-kaput! I paid good money for it-$20 at yard sale. Got 300 days out of it. Installed my made in Thailand GE-which I had used for two summers before installing the PRC one. May, 2024, turned it on, 3 days later-OK, you don't owe me anything , paid $45 at a Goodwill. To Craigslist, found a Korean made LG, $80, the seller had it plugged in and running when I got there. We are in a hot spell here in Central NJ, abut 2 weeks in the high 80s, low 90s.
When younger and living in sc PA, we never had air conditioning. Not so fondly remember pushing crete every work day in the summer.