said by Jack_in_VA:said by nunya:What causes this? I thought NG was clean burning. It's a moot point now, but I'm just curious. Was it the burner / exchangers fault? Could it have been the gas itself?
I've heard of plenty of cracked HE, but never a "clogged" HE.
I googled it and it seems all NG is not the same composition. It varies depending on the source and other factors.
Chemical Composition of Natural Gas It definitely is not. Neither is crude oil, coal or any other fossil fuel for that matter. There are "sweet" and "sour" varieties of oil and natural gas.
