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 ductless mini-splits, bring floor-by-floor performance into the scope discussion. Compare a dedicated system for the problem room with modifications to existing central ducts. For multi-zone proposals, ask what happens when only one small room needs conditioning and how the controls coordinate operation.
