I have an extremely old oil furnace that the home warranty people could not find a coil replacement for. They sent us a check and we're on our own. I want to switch to gas anyway. Assuming that we can run a gas line and switch, what are my options for heat and hot water on a summer/winter hookup? I have baseboard heat. What are my options here? I should mention that I have a split level home that I plan to run duct work throughout the home for central air. Not sure if that changes my options. Thanks for the advice!