How does the weber gas grill work?

Incredible Gas Efficiency

The manifold and the stainless steel burner tubes in our gas barbecues are specially designed so they have a much lower megajoule rating (less gas used per hour) for each burner, yet remarkably, with our cooking system, they cook faster. As a result you have amazing fuel savings. It’s not just the money, it’s the environment and, of course, you don’t need to get your gas bottle filled nearly as often.