This is a great thawing unit sewer lines-culverts and we’re hot water pressure is needed.Absolutely new condition.Unit has 4.7 hours on it.NOTE the 555he is the best design in the 555 series’s it is a downdraft.Always stored inside.1300# PSI.Runs one single 20 AMP circuit.Has a GFI and a extra #12 extension cord.Three extra oil burner nozzles and one set of electrodes.Running oil burner is a option.Purchased from AIH.Been using Hotsy units for over 30 years and they are the best.Moving so no longer needed for me culvert Calls only 863-1155