Originally Posted by TJTHEBEST
What about using your existing hood fan if brewing in the kitchen? Maybe hook some duct to it and run it to the boil kettle with a bigger hood to catch the steam.
The average range hood can't effectively remove the amount of steam produced by a large kettle vigorously boiling for an hour. Ideally you need 500+ CFM to do this. Most hoods are in the 200CFM range unless you have a high-end model.