Kitchen Range Hood Guide: Types, Ducted vs Ductless

U.S. households with a range hood: over 80% ·
Vented hoods reduce indoor air pollutants by: up to 96% ·
Average cost for ductless installation: $150–$400 ·
Noise level range for standard units: 2–9 sones ·
Recommended CFM for gas cooktops: 100 CFM per 10,000 BTU

Which type of range hood is best?

The best type depends on your kitchen layout and cooking habits. No single design works for every home – here’s how the four main types compare.

Under-cabinet hoods

• Most common type for standard kitchens – fits under a cabinet above the cooktop (Whirlpool (appliance manufacturer))
• Available in widths from 24 to 48 inches
• Generally lower CFM (200–400) – adequate for electric cooktops

Wall-mounted chimney hoods

• Mount against the wall with a decorative chimney that hides ductwork
• Higher CFM options (400–900) – better for gas ranges
• Often include a stainless steel finish that matches professional-style appliances

Island hoods

• Designed for kitchen islands, require ceiling mounting (FOTILE (range hood manufacturer))
• Need higher CFM because they lack side walls to contain smoke
• Installation is more complex – requires ductwork through the ceiling

Downdraft hoods

• Retractable vent rises from behind the cooktop
• Less effective at capturing smoke and steam compared to overhead models (KitchenAid (appliance brand))
• Best for islands where an overhead hood would block sightlines

The pattern: under-cabinet and wall-mounted hoods offer the best capture efficiency for most kitchens. Island hoods work when the cooktop is in an island, but expect to pay more for higher CFM. Downdraft is a last resort for design constraints.

Which is better, vented or unvented range hood?

The implication: for kitchens with gas ranges or high humidity, ducted hoods are the clear choice. Ductless only makes sense when ductwork is impossible.

Which is better, a range hood or an exhaust fan?

CFM and capture efficiency differences

Range hoods sit directly above the cooktop, capturing fumes at the source. Exhaust fans, typically wall- or ceiling-mounted, pull air from a wider area but capture less cooking pollutants. The Home Ventilating Institute (HVI) standard rates range hoods by CFM (cubic feet per minute) and capture efficiency, while exhaust fans are rated by total airflow but lack capture-efficiency metrics.

Noise level comparison

Range hoods produce 2–9 sones, with quieter models near 1 sone on low speed. Exhaust fans can be quieter because they are farther from the cooktop, but their lower capture efficiency means you may need to run them longer to clear the air.

Installation requirements

Range hoods require mounting above the stove and ductwork (or a recirculation kit). Exhaust fans are simpler to install in a wall or ceiling, but they don’t provide task lighting or multiple fan speeds. Range hoods deliver better performance for heavy cooking.

The pattern: for a cooktop, a range hood is the more effective choice. Exhaust fans are better suited for general room ventilation.

How do you install a kitchen range hood?

Measure and mark mounting height

Standard mounting height is 18–30 inches above the cooktop, per manufacturer guidelines. Mark the wall or cabinet bottom for bracket placement.

Secure the hood to the wall or cabinet

Use screws into wall studs or cabinet framing. For wall-mounted chimney hoods, attach the mounting bracket first, then hang the hood. For under-cabinet models, screw directly into the cabinet bottom.

Connect ductwork or install recirculation kit

For ducted installation, connect the hood’s exhaust outlet to rigid metal duct leading outside. For ductless, install a charcoal filter and recirculation kit as directed. Electrical connection should be done by a licensed electrician.

1. Measure and mark mounting height (18–30 inches above cooktop).
2. Secure the hood to the wall or cabinet using appropriate fasteners.
3. Connect ductwork (ducted) or install recirculation kit (ductless).

The catch: improper ductwork reduces performance. Smooth metal ducting with minimal bends gives the best airflow.

What size range hood do I need for my kitchen?

CFM requirements for gas vs. electric cooktops

For gas cooktops, multiply the total BTU of all burners by 0.1 to get recommended CFM (e.g., 50,000 BTU = 500 CFM). For electric cooktops, a minimum of 200 CFM is standard, but heavy cooking may require 400 CFM or more.

Hood width should match or exceed cooktop width

The hood should be at least as wide as the cooktop, preferably 3–6 inches wider to capture rising smoke. Common widths are 30, 36, and 42 inches.

Kitchen volume calculation

For ducted hoods, ensure the CFM rating is sufficient to exchange the kitchen air at least 15 times per hour. Calculate kitchen volume (length × width × height in feet) and divide by 4 to get required CFM. This is a secondary check after burner-based CFM.

The implication: size the hood to the cooktop, not the kitchen. Gas burners drive the CFM requirement.

“Lawrence Berkeley National Laboratory studies show that vented range hoods can reduce indoor air pollutants from gas cooking by up to 96% when properly sized and installed.”

— Lawrence Berkeley National Laboratory researcher

“The Home Ventilating Institute (HVI) provides certified CFM and sone ratings, giving consumers a reliable basis for comparing hood performance.”

— Home Ventilating Institute (HVI)

“Underwriters Laboratories (UL) standards UL 858 and UL 507 cover range hood safety and performance, ensuring electrical and fire safety.”

— Underwriters Laboratories (UL)