Our very old evaporative a/c had died. I contacted about four suppliers/installers in my area. Most responded "Can't get back to you for 5-10 days".
The manager at Quality A/c visited my home that day, climbed on the roof and gave me the sad but not unexpected news that the whole system was completely useless - the a/c unit (20 years old), ducts (at least 40 years). Major surgery, with total new for old transplant was the only option.
The team arrived on time with a trailer full of new units. The old system was pulled out - everything, and loaded onto the trailer - a messy job but well done.
The old a/c unit was located in the wrong part of the roof for maximum efficiency. It was removed and replacement tiles inserted and the new a/c installed in the 'right' position.
The team was efficient, polite, hard working, professional and tidy.
We now have a (very quiet) Breezair EXS 220 a/c, new ducts to nine outlets and new vents.
As we are in autumn we have not used the a/c properly but our test run gives us great confidence that this is an excellent replacement.
Good company - good system.

Approximate cost: $6000