Place the Stove at Eye Level.
The recommended height for how far a wall oven should be off the floor is eye level. Because that measurement depends upon the height of the person who uses the stove the most, the height will vary from person to person.
Take Special Needs Into Consideration.
People with special needs might require a wall oven installed at such heights as 4 feet off the floor if, for instance, they use a wheelchair, or 2 feet from the floor if they can stand but their mobility is hindered.
Consult with the person who will be cooking with the oven the most and install the appliance at a height from the floor that will best suit her needs.