Is your A/C Coil in Orlando Icing or Freezing? There are two main reasons for this, lack of air flow or low on refrigerant. Lack of air flow can be a dirty air filter, dirty indoor evaporator coil, dirty fan blades, damper in duct restricting air flow. Call Del-Air for Service. (888) 810-1427 Ask about our Maintenance Plans to keep your Orlando A/C Coil running efficiently.