Horrible. It pains me to say that I have been with MJ Mac since they installed a new system about 8 years ago. Every year, without fail the system has had some problems. Not working, leaking, replacing parts because of leaking ...etc. I cannot even tell you how many motherboards I have had replaced so I am well versed in their service. If your service is one and done you might get lucky. Otherwise, hang on as you are in for a ride. Most recently, I called as my AC/Heater stopped working. Told them I was in no rush due to the change in weather. They said "a tech will be there Thursday AM". So, I work from home. No call. Noon comes and I call, "where is he" "Oh, I cant give you and ETA." "But you said he would be here in the AM" - silence. I tell them I cannot wait but I get a call @ 4:30 from the tech saying I will be at your house in 10 mins. I was not home. I call the following week, as they did not call me to reschedule. The tech shows up. "Cant fix it as there is some problem I need to speak to Tech Support for this system and they wont speak to me.". He says he will call me back and leaves. Friday comes and goes. No call. I finally call @ 4:30 Monday as still no call. They say the part store is closed. We will definitely call you before 9:00 AM tomorrow. 10:30 tomorrow. No call. I called 4 times and spoke to people expecting a simple call back. It is now Wednesday and I have already contacted another HVAC company. MJ MAC? NEVER AGAIN!! read more