[Shop-talk] Garage ventilation?

[Wayne]

Gerald Brazil wrote:
> installed a "whole house attic fan".
> ... On high, ours will nearly suck the wallpaper off of the walls.
Be careful.  That can be a Bad Thing.

I read a story of someone in a newly built home who called back the plumbing contractor, claiming there were "flames shooting out of the gas water heater."  The plumber found soot and scorch marks on the heater and surrounding materials, but it appeared to be operating normally.

He asked if the house had a vent fan -- "yup, it does" -- and asked the owner to turn it on.  Sure enough -- flames shooting out the water heater.  The house was so air tight, the fan was pulling outside air down the flue and out the combustion chamber.  Scary.

  -Wayne