Illflem,thank you for responce actually there is a company up in the mid west that manufacture waste oil furnaces and water heaters,unfortunetly the cannot sell them to us here in CA, they are not E-P-A approved, so when I get out of the city I will be taking a trip to buy some goodies,I havn't checked into converting a standard fuel furnace over good idea,I think i'll pick one up and check it out,i've got some literature on the INOV-8 seems to me the most important thing is the pre-heater to salidifye the combustables before they get into the injectors,at the flue discharge they also re-burn to clean before it is dumped into chimney,so I can see why converting from regular #1 to waste oil would be so costly. the salesman tells me that the 125,000 btu uses about 3/4 of a gallon per hr not to bad. anyhow sorry about the rambling and thanks again for responce
Joe