
There are two types of microwave ovens. Most microwaves still sit on the countertop, but more and more are being mounted over the range, especially in kitchens where counter space is at a premium.

They're best for kitchens with lots of counter space. You can hang some below a cabinet, though that often leaves little working space below.
Pros:Countertop microwaves tend to cost less than over-the-range models.
Cons:The midsized and large models we tested take 2.8 to 3.2 square feet of counter space.

These are often bought as replacements or when a kitchen is remodeled. They can be vented to the outside—but don't expect an over-the-range microwave to vent as well as a range hood that extends over the front burner.
Pros:Over-the-range microwaves leave the counter workspace clear.
Cons:Installation might require an electrician.