Separate the complaint by floor, zone and schedule
For Elk Grove service, identify the thermostat calling for heating or cooling and the rooms that are not responding. A two-floor comfort difference should be described separately from a system that does not run at all.
For a replacement estimate, include any remodel or room-use change since the existing system was installed. Heco can then discuss capacity and distribution together instead of copying the old unit's nominal size.
For thermostats, bring floor-by-floor performance into the scope discussion. Replace the control when its condition or capabilities justify the change. If equipment or airflow is the real cause, address that fault rather than expecting a new display to restore comfort.
