After the acquisition of the hood you should proceed and install it around 20 to 24 inches just above the cooktop.
Minimum height for wall mount range hood.
If available also refer to stove top manufacturer s height clearance requirements and recommended hood mounting height above range.
High capacity range hoods are typically installed between 24 and 30 inches above the cooktop while standard models are installed on average between 18 and 24 inches above the surface of the cooktop.
Range hoods of all sizes must be mounted either between 28 and 36 inches above the cooktop for indoor hoods or 36 to 42 inches above the cooktop for outdoor hoods.
This type of range hood requires a distance of 30 to 36 above the cooking surface.
Manufacturers include the specific height for the range hood in the instructions that come with it.
The most common range hood over a professional gas cooking product is the 18 high professional canopy wall hood.
Hoods mounted too high will be hard to reach and will lose performance and efficiency.
Unprotected and flammable surfaces such as wood or plaster cabinets may be exposed if the hood is not as wide as the cooking surface.
Hoods mounted too low could result in heat damage and fire hazard.