Great machine so far. I have been running it about 15 hours a day for about 50 days and puts out alot of heat!!! It has no problem heating my 35 ft bus. The bus is insulated well but I love the heater. A gallon last me about 24 hours depending on how hot you have it set. The remote that come with is is in Chinese and dose not work. That was lame had to splice the wires to relocate the controll pad to my wall vr. The front of the unit. Any small camper or van occupants would be very cozy in cold winter conditions.