Horrible customer service. I have a 4 year old Lennox AC that stopped cooling. The first time they came out they refilled the coolant but didn't check anything. It stopped cooling again 10 days later . I called them again. It takes hours sometimes days for anyone to call you back . They have an answering service which answers most of their calls, you rarely speak to someone in the office. They came out a 2nd time refilled the coolant, but couldn't check the AC because it was raining. They came out a third time and figured out it was the coils on the unit. It's been 10 days and the coils have been ordered but are not in. My AC once again for the third time stopped cooling. I called them at 9am to come out and put coolant in and they didn't get back to me until 430 and said they would call tomorrow. Unacceptable.... three times without AC on a 4 year old unit during 80-90 degree weather....unacceptable