Upon arrival found found faulty thermostat on upstairs 3 ton 20 yr Carrier attic system; recommended new Honeywell Thermostat; found wet spot on catwalk while inspecting; traced back to coil which was taped in a way that caused condensation to drip down condensation drain line and drip on catwalk; removed soaked insulation and tape from exit port and observed condensation drip into secondary pan; recommended installing water safety switch and consider replacement prior to 2025 refrigerant changes; sent proposals for replacement options and repairs.