Paging Master Plumber

I have an electric heat pump based central heating system. My heating bills (temp set at 70F) in the coldest months of the year approach 1k for 3500 sqft of a very well-insulated brownstone. Would I save money by hooking up the my central heating system to a gas furnace (I have space next to the gas water boiler)?

By guest4 | 06/28/2009 11:38 AM