I live in central New Jersey and have a 1935 center hall Dutch Colonial that my wife and I have spent the last six years restoring ourselves. We have steam radiators and a 40+ year old furnace that is on its last legs. It seems like now is the time to consider investing in not only a new furnace, but AC as well. A Unico system seems like the way to go for the AC (since I am NOT redoing the walls again!), but will it work well for the heat too? I really like the steam radiators. What pitfalls should I be aware of, or questions I should be sure to ask my contractor?