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 SlimStyle LED
Best for Fitting Any Fixture
The lollipop-like shape of the fully dimmable 60W-equivalent SlimStyle means it doesn't need a big heat sink and is more compact than most LEDs. That's good news if you're trying to find a bulb to fit into a sconce or a flat fixture. Even if you have enough room for a larger bulb, the SlimStyle is a great swap for any 60W incandescent. [$9; homedepot.com]