Dear Jim: My heating and cooling system is 20 years old, and I think it is time to replace it. I am trying to decide which type of furnace (gas, propane, electric, oil) is best. What do you recommend? – Russ H.
Dear Jim: I plan to use my fireplace more to lower my utility bills. I see some deteriorated spots on the outside of the chimney, and it has not been cleaned recently. What type of maintenance items can I do myself? – Jack W.
Dear Jim: My houses have always had typical dark asphalt shingles, but they don't seem to last more than 15 or 20 years. Now that my roof is leaking again, what are some of my options other than standard shingles? – Ron G.

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