Our Home warrantee company (One Guard - very good people) responded to our air conditioning unit not working. They sent 3 companies who all made changes that did not work more than a day. And then they sent us Cool Blew.
The tech showed up on time the same day they were called. He was courteous, well spoken and did clean work. He changed a capacitor, and added coolant to the system but then he asked if we also ran an evaporative cooler on this system. I told him we did and he said he needed to go on the roof and check the "Damper" system between the Evaporative cooler and the Air conditioner.
He found that the Damper was not closing so that most of our air conditioned air was going outside. He fixed that and the AC works better now than it has for several years.
Could not have been a better outcome for work done on the house.
I do have to comment on the call center. They were courteous but definitely discouraged any idle chit chat. I realize they did their job and we got what we needed and I really have no complaints but the initial call was great but a follow up call to give them my cell number was pretty curt.
Bottom line - I would call them again and ask for the same tech.