Best Building Water Systems in Austin TX

I'm not saying they did anything wrong, but they just installed 2 units in our house, at a cost of $25k in Novber 2020. We tried being responsible and followed their PM schedule. They were just here last week said everything was OK yet last night the upstairs unit stopped working on an air handler error. I know it's not their fault, technically, but it is annoying to have a hot house after paying so much.