I have just used it once. Took 2 hours to put it together. Very easily done but follow the instructions closely and you will not have a problem. If you do not stick it in the ground or attach it to the floor with bolts this heater definitely needs a larger and heavier base or it will fall over. I built one with plywood (28" x 28") , bolted it to the plywood and put heavy bricks on top of the plywood. You should also buy a hose extension. I have an enclosed patio and it heats it very well within a 10 to 12 foot radius. It lights easily and with natural gas, I don't have to worry about running out of fuel. Love my heater. Hope it continues to perform for a long time.