THIS IS A GREAT HEATER THAT IS VERY EFFICENT! WE MOVED TO A NEW HOUSE AND GO NOT HAVE ANYWHERE TO PUT IT. IT HAS TO BE VENTED TO AN OUTSIDE WALL, AND ALL OF THE GOODIES IT TAKES TO DO IT GO WITH IT!! I HAVE COPPER LINES , VENT, 240 GALLON TANK WITH STAND. WE USED THIS HEATER AS OUR SOLE HEAT SORCE IN A 1400SQ FT HOUSE, AND WOULD ONLY BURN ONE TANK OF KEROSENE A YEAR!!! TRY THAT WITH PROPANE! PLEASE GIVE US A CALL OR EMAIL US AT

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