An LED bulb uses about 75 percent less energy than an old incandescent and lasts up to 25 times longer, which is why the swap is still worth doing.
Replace the bulbs you use most first, the kitchen, living room, and porch lights that run for hours every day.
Match the brightness in lumens rather than watts, since a 10-watt LED now replaces a 60-watt incandescent comfortably.
Buy a small multipack and work room by room, because a full house swap typically pays for itself in under a year.
Replace a few each month and the whole house converts without a big one-time expense.