Arrived on site to perform a diagnostic for a 12 year old Lennox Ac that’s stopped cooling. Client is friends with Josh but we haven’t been to this property yet. Since it was our first time he graciously gave us the gran tour of where to access all heating and cooling equipment. He said the unit stopped cooling a few days ago and he was able to get it running by helping get the fan spinning to get it going but it only worked once. We were able to quickly identify the capacitor was our issue so we tested to confirm and with his approval replaced the thermostat to continue our testing. Since we haven’t had a comprehensive overview of all systems we offered to tackle that while on site today. He agreed so we began our evaluation of each unit. There are 3 Lennox systems that control the basement, the main floor and upstairs. They’re all controlled by nest thermostats. We found all units were operational yet had some cleanliness/signs of neglect. The outdoor units all had heavily impacted c