Furnace working erratically
Hi. I am having furnace issues and am hoping someone can give me some advice. I have a 1995 Honeywell gas furnace. It started blowing cold air yesterday and after shutting it off for a while it will work, just to blow cold air again in a couple of hours. We had the computer board replaced 1 year ago and the furnace tech was in today and said once again that seems to be the issue. At $300 a pop... I don't think I should be replacing this computer board this often. So, he suggested replacing the 14 yr old furnace instead of sinking money into this one (we are also putting the house up for sale in a month). Any help or advice would be appreciated.