1 What is the width of your stove? For example, 1200mm wide, your fan is not equipped with a range hood enough to cover the whole stove, so the oil smoke can't be exhausted, and there is no high-power fan.

2 "Theoretically, only by making progress can we go out. The air flow into the kitchen should also match the exhaust volume of the fan;

3. Is there a flue for the fan to exhaust? Pay attention to whether the path will form a "blocking flow" phenomenon;

4 "It is better to install more exhaust fans with smaller horsepower (arranged according to the stove) by installing super-large exhaust fans at a single point. And can be started independently according to the situation, thus saving electricity.

I hope I can help you solve your difficulties.

I wish you a prosperous business!