Most hoods aren’t built for it
Stir-frying means high heat and a lot of oil smoke, and the standard hood that comes with most homes just can’t keep up. A common rule of thumb for gas is about 100 CFM of exhaust for every 10,000 BTU of burner output, with extra margin for wok cooking.
Size matters as much as power. The hood should be wider than the cooktop, ideally by three to six inches on each side, ducted outdoors with a larger duct, and fitted with stainless baffle filters that can go in the dishwasher. These figures come from hood manufacturers, so check them against your appliance specs.
Big fans need makeup air
Under the model residential code, a kitchen exhaust system rated over 400 CFM needs makeup air when the house also has atmospherically vented gas equipment, like an older water heater or furnace, that could backdraft. California’s residential code is built on that model code, and your local inspector has the final word.
The fix is usually simple once it’s planned: a passive or powered makeup air damper, or replacing an old natural-draft water heater with a direct-vent one.
A second kitchen, or a wok station
A lot of newer Orange County homes now include a separate prep or spice kitchen, and for families who cook every day it’s the best of both worlds. The heavy cooking happens behind a door with its own hood and hard-wearing surfaces, and the main kitchen stays clean for guests. If that isn’t possible, a dedicated outdoor wok burner on the patio does a lot of the same work.
Gas or induction?
A Stanford study published in December 2025 found that switching from gas to electric stoves cut nationwide nitrogen dioxide exposure by more than a quarter, and by about half for people who cook the most. Induction wok burners exist, but they don’t feel exactly like a flame.
Many of our clients keep a gas wok burner in the back kitchen and put induction in the main one. Whatever you cook on, the ventilation is the part that really matters.
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