Show-and-Tell Checklist (in order)

• 1

  Show the filter (the "lungs")

  Fast + visual

  Pull the filter and let the homeowner see the dust load. Point out that restricted airflow forces the system to work harder and wastes energy.

  Tech line: "This filter is the system's lungs. When it's packed with dust, airflow slows down, and the system has to work harder to cool your home."
• 2

  Show the indoor coil path (where dust becomes a blanket)

  Efficiency + comfort

  If you can safely view the coil face or cabinet area, show any buildup. Explain: dust blocks heat transfer and can contribute to icing and reduced airflow.

  Tech line: "If dust gets past the filter, it coats the indoor coil like a blanket. That makes heat transfer harder, can reduce airflow, and can even contribute to freezing."
• 3

  Show the outdoor coil (the "radiator")

  Bills + runtime

  Walk them outside. Point to visible matting, dust, or debris. Explain: the outdoor coil must reject heat — dirt makes the unit work harder and can increase energy use.

  Tech line: "This outdoor coil has to dump heat like a radiator. When it's dirty, it can't reject heat as well, so the system works harder and runs longer."
• 4

  Connect it to a simple symptom they already notice

  Homeowner-friendly

  Tie dust buildup to common complaints: "not cooling like it used to," "hot rooms," "runs all day," "higher bill," "weak airflow," "freezing."

  Tech line: "When airflow and heat transfer go down, you feel it as weak airflow, hotter rooms, longer run times, and higher bills."
• 5

  Offer the simple protection plan (filter + coil care)

  Non-pushy close

  Give a clear next step: correct filter type/interval, verify returns aren't blocked, and schedule coil cleaning/maintenance when indicated.

  Tech line: "Our goal is to keep airflow clean and coils breathing. That protects comfort now and reduces wear that shortens equipment life."