Product Knowledge

A range hood's amp draw is not a single number — it depends on the blower's wattage, the static pressure the duct creates, and the supply voltage. 

A 1200 CFM range hood is not a default upgrade over a 400 CFM residential hood — it is a specific engineering answer to a specific problem. 

A range hood that is too small for the cooktop it serves is one of the most expensive appliances to own - and most owners do not realize the cost until the cabinets are stained, the duct fan has burned out, or the odor has migrated into the living room.

• The standard open-plan kitchen CFM formula is CFM = Volume (m³) × ACH ÷ 60; for a 90 m³ open-plan kitchen at 15 ACH target, baseline CFM = 225, before layout coefficient.

• Wok burners deliver 2-4× the BTU output of Western gas burners (15,000-150,000 BTU/h vs 5,000-8,000 BTU/h), which is the root reason 900+ CFM has become the engineering baseline for any wok-cooking application.

If you are planning a kitchen renovation or building a new home, I believe one of the most overlooked decisions is the range hood height above stove.

When I walk into a commercial kitchen for the first time, the first thing I check is the range hood size relative to the cooktop. 

The hidden variable that slashes rated airflow -- and how we fix it at the factory level.

Five ranked causes of range hood suction loss, what each fix costs, and what a manufacturer sees.

A practical guide to commercial kitchen CFM calculation covering volume, BTU output, duct loss, and hood selection.