Range hoods work by pulling air through a filter and venting it outside or recirculating it.
- Ducted hoods are more effective but require outside venting; ductless hoods are easier to install.
- Choose CFM based on your cooktop size and type, and clean filters regularly for best performance.
What is a range hood and why do you need one?
A range hood is a ventilation device mounted above your stove. It captures airborne grease, smoke, heat, and odors produced while cooking. Without it, these pollutants linger in your kitchen and spread through your home. Over time, grease can coat cabinets and walls. Proper ventilation also improves indoor air quality and reduces moisture.
What are the main parts of a range hood?
Every range hood has a fan, a filter, and a housing. The fan creates suction to pull air upward. The filter traps grease particles before they reach the fan. The housing contains the fan and directs airflow. Many models include lights to illuminate the cooktop. Controls let you adjust fan speed and lighting.
How does the fan and airflow work?
The fan spins to create a pressure difference, drawing air from below. Air enters through the bottom opening and passes through the filter. The filter captures grease and larger particles. Cleaner air then moves toward the fan and exits through the vent. The suction power depends on the fan's cubic feet per minute (CFM) rating. Higher CFM moves more air, which is better for heavy cooking.
What is the difference between ducted and ductless range hoods?
Ducted hoods vent air to the outside through a pipe. They are more effective at removing heat, smoke, and odors completely. Ductless hoods recirculate air back into the kitchen. They use a charcoal filter to absorb odors before releasing air. Ductless models are easier to install where ducting is impossible. However, they don't remove heat and may be less powerful.
What are the different filter types and how do they work?
Most range hoods use a mesh or baffle filter to catch grease. Mesh filters are made of layered aluminum or stainless steel. Baffle filters use angled slats that force air to change direction, trapping grease. Both types are washable and reusable. Ductless hoods also require a charcoal filter to neutralize odors. Charcoal filters need replacement every few months, depending on usage.
How do you choose the right size and power for your kitchen?
The hood's width should match or exceed your cooktop width. For electric stoves, a minimum of 100 CFM per 10,000 BTUs is recommended. For gas stoves, use 100 CFM per 10,000 BTUs of heat output. A general rule is 100 CFM per linear foot of cooktop. For example, a 30-inch cooktop needs at least 300 CFM. Consider your cooking habits and kitchen size when selecting.
What are the common installation types?
Under-cabinet hoods mount beneath a cabinet above the stove. Wall-mounted hoods attach to the wall and are visible. Island hoods hang from the ceiling for cooktops on an island. Downdraft hoods rise from the countertop when needed. Each type has different ducting requirements. Choose based on your kitchen layout and venting options.
How do you maintain a range hood for best performance?
Clean the filters regularly to prevent grease buildup. Most metal filters can go in the dishwasher. Wipe the exterior and interior surfaces with a degreaser. Check and replace charcoal filters if you have a ductless model. Ensure the fan and ductwork are free of obstructions. Proper maintenance keeps the hood efficient and extends its lifespan.