Microwave ovens are up to 66 percent more energy-efficient than conventional ovens. Besides saving energy, microwave ovens won't heat up your entire kitchen (at least, they sh... read full tip

Microwave ovens are up to 66 percent more energy-efficient than conventional ovens. Besides saving energy, microwave ovens won't heat up your entire kitchen (at least, they shouldn't), and they also save time.

How much time does a microwave save? If you heated frozen meals for dinner using your microwave instead of the oven for a month, you'd save about 12.5 hours. That's enough time to take four intensive cooking classes for beginners. In a year's time you could master the advanced level…or just have more time to relax after dinner.