Built-In Range Hood 28, 30, or 36 Inches: Which Size Should You Choose?
Start with a simple rule:your hood should be at least as wide as your cooking surface. If you have a 30-inch range, a 30-inch insert hood can be suitable for everyday use, provided it is properly installed and offers sufficient power.
However, many manufacturers recommend choosing an insert hood that is wider than the cooktop. Steam does not rise in a straight line from your pots and pans—it disperses before reaching the hood. By adding approximately 3 inches on each side, for example moving from 30 to 36 inches, you expand the capture area and intercept steam before it spreads.
This added width becomes even more beneficial if you cook on a gas cooktop or range, or if your kitchen features an open-concept layout.
A 28-inch model should only be considered if your cooking surface is genuinely narrower or if cabinet space strictly limits your options.
What CFM Rating Should You Choose for Your Insert Range Hood?
The power of an insert hood is measured in CFM (cubic feet per minute). This airflow rating reflects the unit’s actual ability to remove smoke, steam, and odours above your cooking surface. The appropriate level depends directly on your cooktop type and cooking habits.
For a standard electric cooktop used daily, an insert hood rated between 300 and 400 CFM generally meets typical needs. This airflow provides effective ventilation without oversizing the system.
If you cook with gas or regularly sear at high temperatures, aim for 500 to 600 CFM. Gas combustion and more intensive cooking generate greater heat and emissions, requiring stronger extraction.
For frequent frying, wok cooking, or very high-heat techniques, an insert hood rated at 600 CFM or more offers better control over odours and steam.
The goal is not to choose the most powerful hood, but the one that truly matches how you cook. Properly calibrated airflow ensures a balance between performance, sound comfort, and energy efficiency—an important consideration in Canadian homes.