NEW CUSTOMER IN WATERDOWN. CLEANING THE INDOOR PART OF 2 TON AIR CONDITIONER (ALSO KNOWN AS A COIL OR EVAPORATOR COIL). DUE TO THE LACK OF MAINTENANCE AND NOT CHANGING THE FURNACE FILTER BY THE HOMEOWNER, THE AIRFLOW IS RESTRICTED WHICH CAUSES THEIR FURNACE TO OVERHEAT AND BREAK DOWN, REDUCING THE COMFORT AND AIRFLOW IN THE HOME, AND REDUCING THE EFFICIENCY OF THE AIR CONDITIONER.