i am going to have someone come look at my current Goodman system. it was installed in 1995, so i have no idea whether it's reached the end of its life or whether it will be repaired. the home was built in the mid 50s, and some of the old parts of the home have the old duct work, i think anyway (and ungrounded outlets) -- crummy stuff.
hopefully this furnace is fixable. but if i need a new system i think i need a better furnace than i have (i'd like to be more efficient if nothing else). we have added on to our home and i notice our new master suite bathroom is cold all of the time. we also have an additional family room that's been added on -- we've had the home 2 years so the family room was already here. i don't think the heater is reaching these areas well (and the duct work to this new area is new). i have a space heater in the family room and the master bathroom that are both used sparingly, but a new furnace should do away with that i would hope.
anyway, we're in michigan and it's cold here far too long. i have a ranch of over 3,000 square feet (basement is full and finished). i have read that systems don't make a whole lot of difference and that the contractor is the difference maker. is this fairly accurate? are there key questions i should ask when i am calling folks to come look at my situation and give me estimates? is there something they'll do that i should watch for? i realize i could be spending a lot of money so i want to try and get it right.