It can be more but any less could limit the size of pots you can use on your cooker disrupting the ease of cooking.
Over stove microwave height.
The space above your stove can vary just as widely so we ll say it again.
According to ge appliances an over the range microwave height should be a minimum of 66 inches mounting height from the floor to the top of the microwave.
This 66 inch difference from the floor allows approximately 13 inches to 16 inches between the cooktop and the bottom front of the microwave.
The smallest over the range microwave is built to fit over a 24 inch range and the largest over a 30 inch range helpfully these are also the same widths of standard double door cabinetry.
Manufacturers also place limits on the output capacity of cooktops suitable for use in conjunction with over the range microwaves.
The width of otr microwaves ranges from 30 to 36 inches height from 14 to 18 inches and depth from 15 to 17 inches.
Over the range microwave 2 0 cubic feet.
The minimum recommended height of the cabinet space between the top of the cooker and the top of the otr microwave is 30 inches.
The 66 from the floor dimension will allow approximately 13 16 between the cooktop and the bottom front of the microwave.
Over the range microwaves and advantiums.