about three months ago my HVAC machine stopped making hot air.it was big deal because this has been a cold ass winter.i dont know if you know anything about furnaces, but it's a lot of shit going on in there.but im like, this shit can't be that hard to figure out, so i get to fiddling. long story short, the shit is not designed to be fiddled-with - so i had to throw three hundred dollars at a new circuit board.when's the last time you did something you had no business doing?