Ok, here's my situation. I recently purchased a ranch style house built in the late 70's. Everything is in good shape except the hvac. Heat comes from the original boiler, I have no idea what brand it is. The previous owner also "installed" a central A/C system by himself. It's a Goodman unit, installed about 6 years ago. The duct system is one of the worst I have ever seen, with duct tape holding most of it together, and the duct work takes up half the space in the basement. Since the house did not have vents, he installed 4 of them in the floor, one in the kitchen, one in the living room, one in the main bedroom,and one in the hallway between the bathroom and 2nd bedroom. Air only comes out of 2 of them, and then it's barely enough to be felt in the kitchen and hallway. I had 2 contractors come and look at it, the first one suggested I replace the boiler with an Olsen Quantum 90 boiler, and go with a split wall A/C system, which i'm not to familiar with. The second contractor said I should replace the boiler with a forced air furnace, since the vents were in place. That's the way I would like to go, however the quote he gave me to install is high, since the ductwork all needs to be replaced.The system he wants to install is a Luxaire Acclimate 9.v furnace, with a Acclimate 5t series heat pump, which is rated at 15 seer. My question is, would the high cost of going with the forced air furnace/heat pump be worth it in the long run? Any help would be highly appreciated.