The average U.S. household includes 51 lightbulbs. Assuming all of those bulbs are 60W incandescents, over 22 years (a common estimate of LED-bulb life spans), you would save roughly $6,942 in energy costs by replacing them with output-equivalent LEDs. Factor in the combined price of the more than 800 incandescents you'd need to stock up on during that period (since most burn out in 1.4 years or less), compared to buying just 51 LEDs, and the total estimated savings for going all-LED comes to $8,639. A number that large is simply too hard to ignore. With all this in mind, we tested dozens of bulbs to find the ones that will help you make the right swap in any socket.
Philips LED 100W EQ A21
Best for Larger Rooms
The 100W-equivalent class of LED – suitable for basements and large spaces – has arrived. The brighter bulbs can be behemoths, with bigger frames to make room for bulky heat sinks that prevent high temperatures from shortening their life span. And worst of all, they have drastically higher price tags. But while the A21 is still a towering mushroom, it also has a warm, incandescent-like glow, and best of all, it costs just $25. [$25; homedepot.com]