NO AC - TRANE - Upon arrival found system off, client mentioned that system was turned off due to condenser not running on call for AC. Checked thermostat, noticed outdated thermostat on controlling air conditioning system, set tstat to cooling and dropped temperature. Checked air handler in attic. Noticed ducts aren’t insulated. Checked delta T, checked filter and replaced. Checked condensing unit refrigerant pressures ok, Pressures in system is ok at this time, checked delta T receiving good temperature split. Informed client on return visit highly recommended replacing his old model Honeywell Thermostat. Follow Up Action: Office to contact client regarding Thermostat Replacement. Client currently has AC at this time. Reviewed work completed, emailed work summary, collected payment.