On 25 Jan 2006 18:09:26 -0800, wrote:

Greetings. I live outside of detroit, mi. I notice that my neighbors
natural gas water heaters that are vented with b-vent seem to give a
fair sized cloud of "steam" if you will, on a cold morning.
snip
My question is: what causes some people to have steam and others not?

If the stack is above or below approximately 250°F.


-zero