ventilation question - can I go with fewer CFM's?
we are putting a Wolf 48" with double griddle into our new kitchen remodel. it has the semi-open burners. total BTU if I'm calculating correctly is 82,000. I have read lots of good info on GW about proper ventilation and talked to a couple of HVAC guys about it...and I am still really confused.
what I'm looking for advice on is straight up safety issues. while it may sound weird, we'e really not that concerned about smell issues. we have a Jenn Air downdraft right now, cook a lot, and almost never use the vent. our new kitchen has lots of windows and we can easily crack one if something smokes a lot.
I understand the safety issues involved when you get a high CFM hood (and have a fireplace, etc..) re: possible downdrafting. I'm wondering if there are carbon monoxide issues or any other safety issues involved if you just use a smaller blower than recommended??
in my state (MN), you are required to put in a make-up air unit for any hood above 300 CFM. and MUA unit must be heated. we have priced this out with two different HVAC guys and it comes in around $6-7K. while we are willing to spend the money, we are trying to figure out if that is absolutely necessary. more than one contractor we have bid the project out to has suggested using a 300 CFM hood to get around the heated MUA issue. what I can't figure out is if this would be safe.
any input would be much appreciated.