Dust seems harmless enough. It drifts around, settles on shelves, and gets wiped away during cleaning. But inside an air conditioner, dust is far more than just a nuisance. It can quietly build up, block airflow, and force the system to work harder than it should. For homeowners, this often leads to poor cooling, higher bills, and eventually the need for a professional air conditioning repair service. How Dust Sneaks Into the System Every time the AC kicks on, it pulls in air