A range hood is an exhaust ventilation system installed above cooking appliances to remove smoke, steam, grease, and cooking odors. Range hoods are essential kitchen appliances that protect indoor air quality and prevent grease accumulation in ductwork. They operate by drawing contaminated air upward and venting it outdoors or filtering and recirculating it indoors.
Technical Details
Range hoods typically operate at 150 to 400 CFM, with commercial models exceeding 500 CFM. Most building codes require a minimum of 100 CFM for residential kitchens, with additional capacity based on cooktop size. Hoods may feature ducted (exterior vented) or ductless (recirculating filter) designs. Proper installation requires backdraft dampers to prevent outside air from flowing back into the home.
Applications and Practical Significance
Range hoods are mandatory in most jurisdictions and are critical for maintaining kitchen air quality. They extend HVAC system lifespan by preventing grease from entering ductwork. Effective range hood operation reduces cooking-related indoor air pollutants and moisture that could damage cabinetry and walls.