I know people have a lot of bad experiences when it comes to their HVAC system, but, I can honestly say, I am not one of them. I am probably jinxing myself by saying that because now my system will decide to break but up until now I’ve had the best of luck. I moved into my house a few years ago and I haven’t had any problems with my HVAC system. I know that I should contact a repair technician more often to have them come check out the system but it hasn’t failed me yet and I am hoping that it doesn’t. When I think about contacting the heating and cooling company that handles my system I often think about my neighbor who has had nothing but trouble from his system. Perhaps having someone out to look at your system often somehow disturbs things and causes things to go wrong. At the most, all I ever do is change the filter and so far I haven’t had any major problems. I just don’t mess with it, and is sems happy to supply me with all the heat and air conditioning I need, I hope it stays that way. I don’t want to get to the point where everything starts going wrong at once so I do plan on contacting someone to come out and look at the system sometime this year. Especially since Winter isn’t too far away. I don’t want my heat to fail right in the middle of the night when it is below zero outside. My good luck has held out so far but I figure that I shouldn’t push it.