We're closing on a new house outside of Phoenix Area (verrado). This house is 5,000 square feet and has 3 air handlers all of different sizes.
#1, downstairs kitchen / dining / family room. Tstat located between kitchen and family room.
#2, upstairs 4 bedrooms (master suite) Tstat located in upstairs hall near return.
#3, downstairs living room, downstairs bedroom, downstairs bath. The return is in the ceiling in the upstairs hall, and the T stat is located in the upstairs hall. Yes this tstat ONLY controls downstair living space.
Does #3 seem right to you??? I asked the builder, he said it's this way to get a sense of the air flowing into the return. But to me, that is only sensing the upstairs temp and could be 100% different than downstairs where the tstat should be located (even though return is upstairs - which I think is wrong too.)
Am I off base?