An under-cabinet range hood is one of those kitchen investments that pays dividends every time you cook. It removes smoke, steam, and cooking odors before they settle into your walls and cabinets. But choosing the right one means understanding a few key factors: the size of your cooktop, your installation options, and your ventilation needs. This guide walks you through what matters.

Understanding Size and CFM: What Your Kitchen Actually Needs

The Broan-NuTone F402423 is a 24-inch model, which means it's designed to sit underneath cabinets and span approximately the width of a standard cooktop. A 24-inch range hood typically fits above gas ranges, electric ranges, or cooktops that are 30 inches wide, since the hood should extend at least a few inches beyond the cooking surface on each side.

CFM stands for cubic feet per minute, which measures how much air the fan moves. The Broan-NuTone F402423 delivers a maximum of 230 CFM. This is a moderate airflow suitable for everyday home cooking. For a typical kitchen where you're cooking three to four times a week, this performance level handles most tasks. The hood also operates at two speeds, so you can run it low for gentle simmering and switch to high for wok cooking or when you've accidentally charred something.

The noise level of 6.5 Sones is worth considering if your kitchen is open to living spaces. Sones measure how loud a fan sounds; lower numbers are quieter. At this rating, the fan will be noticeable when running at full speed but shouldn't be unbearably loud.

Installation Methods: Ducted or Non-Ducted

One of the main reasons to consider the Broan-NuTone F402423 is its four-way convertible installation. This flexibility means you're not locked into one setup.

You can install it with vertical or horizontal ducting, using the included 3.25-inch by 10-inch damper and adapter. Ducted installation is ideal if your kitchen has accessible space above the cabinets or behind walls to run ductwork outside. This completely removes cooking vapors from your home.

Alternatively, the hood accepts a 7-inch round vertical duct (the round adapter is included, though the damper is sold separately). This is useful if your kitchen layout makes round ducting easier to route.

If ducting isn't possible—say you're in an apartment or your exterior wall is far from the cooktop—you can run the hood non-ducted with air recirculation. This filters the air and returns it to the kitchen. It's less effective than ducting but still removes some odors and moisture. You'll need to purchase a recirculation filter separately for this setup.

The Built-In Light and Filter System

The integrated light accepts up to a 75-watt incandescent bulb (not included) and illuminates your cooking surface. This is a practical feature if your kitchen lighting is weak over the cooktop. The light is controlled by a separate rocker switch, so you can run the light without running the fan.

The aluminum grease filter is dishwasher-safe, which makes maintenance straightforward. Rather than replacing filters frequently, you simply run it through the dishwasher every month or two, depending on your cooking frequency. This saves money over time and keeps the hood performing efficiently. A clogged filter reduces airflow and defeats the purpose of ventilation.

Installation Height and Planning Ahead

The hood must be installed at least 18 inches above your cooktop. Check your kitchen cabinetry before ordering to confirm there's enough vertical clearance. If your cabinets sit lower than standard, a 24-inch under-cabinet model might not fit.

You'll also need to think about electrical hookup. Unlike some range hoods, a power adapter is sold separately, so account for this in your budget and installation planning. Professional installation is recommended if you're not comfortable working with electrical connections or routing ductwork.

Maintenance and Long-Term Care

The Broan-NuTone F402423 requires minimal upkeep beyond regular filter cleaning. Wash the aluminum filter monthly if you cook frequently, or less often if you cook occasionally. Check the damper (if using ducted installation) to ensure it opens and closes freely, as a stuck damper reduces efficiency.

The light bulb will eventually need replacement, and because it uses standard incandescent sizing, replacements are inexpensive and easy to find.

An under-cabinet range hood from a manufacturer like Broan-NuTone is an economical way to control kitchen air quality without a major renovation. The F402423's combination of reasonable airflow, flexible installation options, and easy filter maintenance makes it practical for most home cooks planning a kitchen upgrade.

The product in this guide: Broan-NuTone F402423 Exhaust Fan for Under Cabinet Two-Speed Four-Way Range Hood, 24-Inch, Black