Since their introduction to the residential market in the 1970s, microwave ovens have come a long way. From the era of popping corn and reheating coffee, now many models could replace a full-size thermal oven. Convection and halogen "speedcook" technologies help the former novelty appliance produce complete meals in a fraction of the standard time and with no loss in taste or appearance.
Another sign of change is where microwave ovens are installed. In addition to countertop use, they mount over the range, tuck into a wall or shelf, or even slide out in drawer form from beneath a counter. Saving time and space is what microwave ovens do best.
Here's what you should know when comparing microwaves:
- Built-in microwaves with convection capability are significantly higher priced than basic countertop models but may be a good choice if you're considering a second wall oven. You can save money and space with a deluxe microwave oven instead.
- Although manufacturers measure a unit's capacity in cubic feet, it's wise to use the size of your dinner plate or favorite baking dish to check actual capacity.
- Some popular features include automatic defrost, child safety locks, and multistage programming, such as defrost then cook.
- Even the slightest increase and wattage can make a huge impact on cook times. You may have to relearn how to cook some of your favorite items when you upgrade.

