A clear repair diagnosis before a system swap
For Citrus Heights homeowners, an AC that runs without cooling or a furnace that starts and stops should be evaluated as a complete operating problem. Record the symptom, thermostat mode and whether air is moving before requesting service.
If replacement is recommended, ask what failed and whether the existing indoor coil, ductwork and electrical circuit can be retained. A written comparison should distinguish the immediate repair from optional comfort improvements.
For rooftop units, bring repair versus replacement scope into the scope discussion. A failed component may justify repair; repeated faults or a major failure can justify a scoped replacement comparison. Include building interfaces and access costs so proposals cover more than the rooftop cabinet.