Hello All the split entry houses on this street were built that way, back in the early 60's. Now it is against the law to do that. Some of my neighbors had their boiler men come in and slap in an over head line because it is the easiest solution. Now instead of the oil line being in the basement floor it is essentially in the livingroom or hallway floor!! Is that any better?? Sure is a little harder to bleed the oil line after changing the oil tank filter!! Some burners like the Riello will not support it, so a tiger loop must be installed. $$$$ So I teamed up with an independent boiler man and between the two of us ran it along the floor thru two sheetrock walls and under the door to the garage. We also changed the filter using a 5 year 30 micron commercial filter ($8.00) and then we blew out the old line with a compressor. Should I cover the the line with cement where it goes under the garage door next to the threshold? What is the best way to cover it?? BTW This way with a new Carlin burner blededing the oil line is cake. So after a filter change, Open the bleeder with 3/8" wrench (Put small bucket under it - I use a cuttoff bottom of a plastic coke bottle) and just connect terminals FF (Ususally two yellow wires on them) together with a jumper momentarily after the burner starts put the jumper back on and see the air come out. Run till there is a steady stream, remove jumper and close the bleeder. Dump this good oil back into the tank! That is it The pic below shows the new ORANGE protective sleeve around the copper oil line! This orange sleeve dows allow burial in concrete.