Not that longer. Maybe 2 to possibly 3 uses (pushing it). Remember you must heat up the oven for about 15 to 20 minutes before you even start cooking on it. I always use a 20 lbs. tank . The oven does work nice though . . . .
There is an adapter for a 1lb tank available on the website.
Yes, this product is made in the USA.
This pizza oven requires the distance from any structure to be 48 inches.
There should be a clicking sound. Also check the separation between the sparker and the gas burner; it should be about 1/8 inch. If it's more than that, bend it in.
A adapter will work on the pizza oven for gas.
I recommend buying the wind guard.