the great experence i had is the man with the licence did my work, i'm glad i did not call anyone else because they just send out anyone who in my experience has no knoledge of a air conditioner, and try to sell me a new one! i had someone before who wanted to give me a tune up! a tune up is for a car not a air conditioner, it needs repair not spark plugs or and oil change! that's ridiculous, these license professionals are far and few between. If you don't listen to anyone then listen to me now..... I'm a older guy and back in the days you had someone you talked to on the phone come out and fix things for you! these guys are old school and you can trust them 100 percent. remember to anyone no matter who they are that advertises a lot you will pay for that! you can take that to the bank!! good Luck