Thanks for the Bosch recommendation. Your system is much larger than ours, but you likely have a lot more square footage (we are ~2100 sq ft). I don’t recall the exact number, but I think we are 2.5 or 3.5 ton.

Our system is old enough that it’s just time to replace. It’s the one the builder installed 14 or 15 years ago and it’s fairly low end.

What you’ve accomplished in your home is exactly what my installer tells me they can’t do. He told me no matter how large of a system I buy, the system will never be able to pul the indoor temperature down more than about 20F (internet searches for “max ac cooling” seem to back that up). He says a bigger system will get me down to the 20F floor faster, but that’s it.

I don’t believe it though because of stories like yours and because commercial spaces around here are very cold on hot days.