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.
Cree 40W Replacement LED Bulb
Best for Small Lamps
Cree made history last year, when its 40W-equivalent became the first household LED to sell for only $10 while retaining the same inviting glow as an incandescent – a soft white that bathes the room in warm tones. Unlike some other 40W-equivalent LEDs we tested, it didn't make book pages look jaundiced, making it perfect for reading. [$10; homedepot.com]