Yes. (Usually.) If you’re averse to the idea, start by checking in with your town building department to see if you’re required to have one once you remodel. Next, check the specifications that come with your new range, assuming you’re buying one; you can find those online. The specifications will state whether or not a hood is required for that particular range. But even if it’s not required, it’s a great idea. Without one, every time you sear a steak or broil a piece of fish you could end up smelling the residual odors for days.
Range hood performance is measured in the cubic feet of air the hood can exchange, or move, per minute (abbreviated as CFM). If you’re installing a pro-style gas range or cooktop, add up the maximum output of all the burners, then select a hood rated at 1 CFM per 100 BTU output of the burners. So, for example: If you choose a four-burner range and each burner is rated at 15,000 BTUs (for a total of 60,000 BTUs), you’ll want a range hood rated at 600 CFM. Sound is generally measured in “sones.” That measure is best used as a comparison point between different models. Remember: The more powerful the hood, the louder it will likely be.