The technician said everything was fine. He cleaned the air filters without complaint which is more than the last one did. He was very pleasant . He got here early, did his job and left. I'm not an AC technician so I really can't evaluate his work. I did this service because they say I must to maintain my warranty. This prevented me from using a. home warranty plan that I already have in place that cost me $70/month. Is it wasn't a good deal for me.