Question: how much does it cost to change from oil to gas?
Answer: It depends on who you ask and your particular situation. According to CBS Boston, switching to a natural gas forced hot air system can cost between $4,500 and $7,000. And according to New England Cable News, conversions will run a household $3,500-$10,000. So you can see a wide swing between $3,500 and $10,000.