Range Hood Vent Size

The capture area should be larger than the surface of the cooktop.

Range hood vent size. Once you drill the hole you will need to cut an adequately sized opening to fit the range hood vent either square or a round shaped one depending on the design of your roof vent. Range hood duct installation issues troubleshooting and problem solving. Take note of the size and position of your kitchen. This area is defined by the size of the stove underneath it.

A 0 to 400 cfm fan requires a 4 inch minimum duct size but a 6 inch duct is recommended. If your stove sits against a wall you should provide 100 cfm of airflow per linear foot of range. In addition to the height of a range hood it is also important to consider the capture area of the range hood. Measure the width of your range with a tape measure.

The minimum duct sizes and recommended duct sizes based on a hood fan s cfm rating are as follows. The smaller the duct size the less cfm you need and the larger the duct size the more cfm you need. A stove that measures 36 inches from side to side should be paired with a 42 inch wide range hood. We suggest a minimum range hood duct size of 10 diameter.

Hood vents are generally 30 36 or 42 inches wide. The new hood should be at least as wide as the range or cooktop and preferably 3 inches longer on each side. The size shape length turns and cap on the range hood ductwork adds resistance which reduces the amount of air the vent fan can move requiring additional cfm for the fan. 2 x research source for example a 24 inch 60 cm range would require a hood rated at 200 cfm or greater.

The minimum recommended duct size is 6 for 0 400 cfm range hoods. For optimal performance install a hood between 20 and 24 inches away from. Lucy wants to make sure her range hood duct size is correct for her new home and wants the range hood blower motor installed externally on the rooftop of her house. The hvi also provides recommendations for sizing a range hood based on the width of your range.

What is the minimum duct size for a range hood. Our suggestions for lucy. After the hole is cut in remove the roofing shingles on both sides of the roof opening and at least 3 rows above the opening. When replacing or installing a range hood take note of the size shape and mounting type before going to the store.

Ideally a hood vent is as wide or wider than your range. When using smooth round 8 diameter metal pipe add one cfm per foot of pipe plus 25 cfm for each elbow and 40 cfm for a roof cap.