No it is not. They are only used to pull out smoke or cooking odors and the light is handy.
The distance should be 30 inches between stove top and hood.
You can get your stove's range hood replaced at a local homeware store or you can call a specialist. You can find a specialist to fix the hood in your local Yellow pages.
Most hoods are standardized. For a normal stove, any non-industrial hood should be fine.
The fire thing
The standard range hood dimensions for kitchen installations typically range from 30 to 36 inches in width.
The required CFM rating for a range hood typically ranges from 150 to 900 CFM, depending on the size and type of the stove. It is important to choose a range hood with a CFM rating that is appropriate for the size of your stove and kitchen space to effectively remove smoke, odors, and grease.
The recommended CFM rating for a range hood is typically between 150 to 300 CFM for every linear foot of the stove.
The average size of a canopy range hood is 30 in by 36 in. The best thing is to get the hood that is compatible with the range that is being purchased.
A stove or stove range would use a copper range hood. These hoods are not only a beautiful kitchen accent, but are also useful in ventilation while cooking.
The recommended CFM rating for a range hood in a standard kitchen is around 300-400 CFM (cubic feet per minute).
There are some industrial range hood through kitchenaid and industrialcity that works great with larger multiple fans. As you know with any range hood there is a large amount of installation that is needed.
I had the same question. I researched it and it appears that the answer is a minimum of 24" above the stove or between 60" and 75" off the floor. This puts the hood at a comfortable height for the typical user. B.D.