Dave Russell
TVWBB Honor Circle
For those that have experience with both sizes, how much more fuel does the 22.5 use in similar conditions?
A good bit more, but how much more, I couldn't say. Do some searches and I'm sure you can find some comparisons.
The racks are a lot farther from the fire, and I think that's the biggest reason why the big cooker is often referred to as a charcoal hog, pure and simple. I assume Weber did this to make it convenient to refuel the big cooker through the door, since the "hot squat", (the method used by many on the 18.5") is pretty much out of the question. Those few inches that the meat is farther from the fire makes a big difference, and mainly for it's height, the bigger cooker is more difficult to protect from the wind.