Upon arrival customer stated that main level system was not working and heating. System is 7 year old. Found that thermostat was satisfied at thermostat. Raised temperature and everything with heat came on with no issues and was heating home. System did have a clogged (16x25x1) filter. Recommended doing a maintenance for both systems, customer declined recommendations to have systems inspected only wanted to have both system filter changed. Requested I send over the maintenance information. Did not do full inspection for system, only changed filters per customer request. Main floor system is heating at this time.