Arrived for service eval Homeowner having trouble switching nest thermostat from heating to cooling Switched to cooling Thermostat flickered and glitched briefly but did switch to cooling Replacement recommended for reliability of system Surge protection recommended to prevent further surge related damage to the system Supply duct strap has failed and plenum twisted slightly bottom side has a slight gap and the front side is also leaking air into the attic Resealing and resupporting the duct highly recommended to prevent system from heating and cooling the attic Contactor is burned and pitted likely from thermostat glitching and causing the Contactor to flutter Replacement recommended for system reliability Refrigerant motors and capacitors are fine Homeowner will discuss with her husband and get back to us