I'm thinking of installing an exhaust fan in my garage/shop. Because the exterior walls are made of cinder block (cutting a 4.5" hole through both sides like a dryer vent set up with a fan attached), I was wondering if a bathroom exhaust fan would clear the smoke from welding or cutting with a chop saw and dust from sandblasting cabinet. The fans that I have been seeing exhaust around 70cfm or so. The room is approx. 21' x 11' with a 7' ceiling. Would this be enough to do the job or would I just be wasting money and time installing. Currently, I open the garage door until it clears, but then all my heat I had is gone (the garage is heated by a forced air register from the house furnace) Any suggestions? walt
- posted
20 years ago