ladhunt

I'm not sure what information you need to give me an informed answer so feel free to ask. We live in a 55 yr old house, hence the 55 yr old furnace. We've heard differing information on whether to replace it or not. One guy says that this "iron horse" will still outlive any new system we put in and another one says it's a carbon monoxide hazard and it should be replaced. Right now, we're having some issues with the coils freezing up. We turn off the AC and let it thaw and then turn it back on again to cool for awhile. We've got someone coming out to take a look at it and to clean the coils. Other than that, it works well. Also, we are thinking of turning our oversized garage into three separate areas all with HVAC, of course. It's about 660 sq. ft. This being the case, would you recommend replacing the existing system to cool the entire house (1479 sq ft) and remodeled area (660 sq ft) or keeping the old "iron horse" and adding on a separate AC for the new area? P.S. I tried to call my husband to get better information for you and couldn't get in touch with him. He'll probably laugh at the sketchy information I gave you. Sorry!