How much vent hood CFM do I need?
For my kitchen renovation, my contractor is planning to install a 30" Whirlpool 400 CFM vent hood with a 6" duct. We are also planning to install a 30" RNB Bluestar range (which has 2 22,000 btu burners). Bluestar recommends a 600 CFM vent hood, but our contractor doesn't want to install one that large because it will require an air recovery system. Is the 400 CFM vent hood powerful enough? Opinions please!!!!