Hoods mounted too high will be hard to reach and will lose performance and efficiency.
Minimum height for wall mount range hood.
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 low could result in heat damage and fire hazard.
Unprotected and flammable surfaces such as wood or plaster cabinets may be exposed if the hood is not as wide as the cooking surface.
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.
Unprotected range hood height.
This type of range hood requires a distance of 30 to 36 above the cooking surface.
After the acquisition of the hood you should proceed and install it around 20 to 24 inches just above the cooktop.
The american institute of architects recommends a minimum of 30 inches 76 2 cm between the stove and an unprotected upper surface.