Has airflow changed at the registers?
If a furnace or air conditioner has reduced airflow, visible dust around the equipment, or a blower that seems to run longer than expected, identify the model and note the symptoms before comparing cleaning scopes. Blower assemblies, evaporator coils, and condensate paths are separate components; access and condition affect what work is appropriate. Ask which parts will be removed or cleaned in place, how nearby electrical and control components will be protected, and whether any observed concern should be assessed by an HVAC technician.
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