Has airflow or cooling changed from its usual pattern?
Furnace and air-conditioning cleaning can involve different components, so the equipment type and symptoms should guide the assessment. If a blower wheel has visible buildup, ask whether its assembly can be accessed for cleaning; if cooling performance or drainage is a concern, ask about the evaporator coil and condensate path. Heat exchanger surfaces and nearby electrical components also require careful handling. Share equipment labels, photographs, and any service notes so the proposed work can be compared with the system manufacturer's instructions and the requested scope.
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