We learned our lesson on tstats on a job with 7 HVAC zones, but two of the units needed outdoor temp to trigger the high efficient changeover on the heat. We found out about the problem during winter. 5 units worked fine, two blew cool air if the outdoor temp got below 40. To make it worse, the job was 3 1/2 hours away.
Civil War reenactment is LARPing for people with no imagination.