Even the most economically priced refrigerators available today have significant advantages over older models. They're quieter, do not require defrosting, are easier to clean, and are infinitely more energy efficient.

As a general rule, two people should have at least 10 cubic feet of refrigerator space, not including freezer space. Add 1 1/2 more cubic feet for each additional family member.

Most refrigerators are 28 to 34 inches deep, so they protrude a few inches from cabinets and countertops, which are 24 inches deep. The advantage to this is that the doors do not bump the countertop or cabinets when they open.

If you prefer the refrigerator to be flush with the adjoining cabinets, you may be able to recess it back into the wall, keeping in mind that refrigerators require ventilation. Another alternative is to purchase a shallow "flush fit" refrigerator. With either choice, make sure that the doors will be able to open fully.

Manufacturers have toned it down since the days of avocado and gold refrigerators in the '70s. Economical models are often available in white only; black and almond are sometimes offered. A stainless-steel exterior is pricey but adds an appealing retro look. Some models offer door panels in a wider range of colors and finishes.

The most common type of refrigerator is the two-door top-mount unit--with the freezer mounted atop the refrigerator. The main complaints with this type are that things get lost in the back of the freezer and that the bottom shelves of the refrigerator are awkward to access.

In a bottom-mount unit, however, the freezer--basically a large drawer that slides out for easy access--lies below the refrigerator. More frequently used refrigerator items are at eye level.

A side-by-side model offers convenient access to both the refrigerator and freezer and makes good use of door space. However, narrow freezers do not easily accommodate big items such as pizzas or turkeys. Also, side-by-sides waste a good deal of energy because their tall, narrow freezer compartments are harder to cool.

Most refrigerators have deep doors. With these, more food items can be accommodated in easy-to-reach door compartments and the main refrigerator is shallower, allowing for easier access.