They say you get what you pay for with anything, however usually when something is free it is most likely going to be the worst product or maintenance you will have ever had! While in some cases this is not easily true, in more than 2 cases it is! Especially when it comes to anything having to do with HVAC! If you have ever had discounted HVAC installation or discounted HVAC repair service, unless it was from a coupon from your local HVAC business, it will usually be really terrible Heating as well as A/C service, and having quality HVAC maintenance requires you to really pay for what you are getting. I discovered this through trial in addition to error over the years. I have taken advantage of these free HVAC tune ups from certain heating in addition to cooling companies across our city; And let myself and others tell you, that those HVAC tune ups are some of the worst I ever had in our whole entire life! I am totally in addition to utterly serious on this factor, though, when I am paying full price for all kinds of HVAC maintenance I always get nothing however the best HVAC maintenance on earth! So trust myself and others when I tell you that the best things in life are really not free! Do not let anyone else tell you any differently! If they do, then they are scamming you. I would not lie in what I am saying to you all right here in addition to right now!