I currently have oil heating my home and my furnace is aprox 7 years old. Due to the high cost of oil, I was looking into a natural gas conversion. I've been told that you can convert from oil to natural using the xexisting furnace. It is difficult for me "understand" how the conversion takes place ssing how oil and gas burn so diffrently. But, just wondering if anyone has done the conversion and what their experiences were. Was there a significant cost difference? Approx how much was the conversion using the existing furnace?

First off you are better off not converting the old oil furnace. No matter what kind of conversion burner you use it will still not as efficient as a new 95% gas furnace. A conversion of oil to gas might net you 70/75% on efficiency and with the cost of gas that 20% savings can add up in a hurry.

Many years ago a conversion from oil to gas or gas to oil was a popular item but today the gas furnaces are designed to capture almost all of your dollars heat value.

BY the time you buy a powered gas burner and pay to have it professionally installed you are getting close to the price of a new high efficiency furnace so the initial savings will be minimal.