John, if you're referring to a house in TV, you might want to look behind the stove and the dryer and/or check your breaker panel. Our patio villa has natural gas appliances and the house was built pre-wired with the 220 volt receptacles already in place for an electric stove and dryer. Also, the appropriate breakers are in place in the breaker panel as well. If that's the case with your house, all you'd need to do is replace your two gas appliances with electric ones, cap the gas lines to those two appliances, and you're good to go. Otherwise, it would be a matter of running new wiring for each from your existing breaker panel. You'd also need to verify that there's room in the panel for the additional breakers and that the electrical service to the house is adequate to support the additional load required to support the new electrical appliances.
As far as the furnace goes, you'd need to replace it with either a straight electric furnace or replace it with a heat pump (more efficient than just a straight electric furnace for a heat source). A qualified HVAC contractor could tell you if any of your current A/C stuff could be utilized with whichever replacement unit route you'd choose to go. You'd need to have some new wiring done as either of the two new furnace choices will require additional amperage to operate vs. your current gas furnace.
Hope that helps!
Bill
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