Our furnace (which is an outside heating/cooling unit) is not working. It is only blowing cold air. I know for a fact it works or at least it did when we bought the house a few months ago (home inspector checked...felt the heat myself). This is the first morning it is cold enough to use and we are freezing! All I can think of is the pilot light is out? IS there a pilot light? ANY ADVICE WOULD BE APPRECIATED...WE DON'T HAVE MONEY TO CALL A REPAIRMAN.