Question: how much does it cost to change from oil to gas heat?
Answer: How Much Will the Equipment Cost? Gas-fired equipment costs less than oil-fired gear. For a basic furnace (for a forced air heating system) or boiler (for hot-water heat), you'll pay around $1,500 to $3,000 for gas and $2,000 to as much as $8,000 for oil, says Ellis Guiles of TAG Mechanical in Syracuse, New York.