They installed our AC years ago. Last year, it didn't work on a hot day. We called the service and it was fixed. This year, the AC stopped working again. We called the service, after a round of check, we were told that one main part needs to be replaced. They charged the service fee and left, said they would call back to give the price of the main part. Later we were told the part should be under warranty but they need to check it. Then no further information any more. We called several time, never got to talk the person who is in charge of it. It's been over a week, and we've been through two round of heat warning without AC. We decided to find another company to fix the problem by giving up the warranty. Their terrible service not only wasted our money but also our time.