For decades, halogen lights reigned supreme in low-voltage outdoor lighting systems, but LEDs have all but replaced them because they cost less to operate and last much longer. But you don't have to tear out all your old halogen fixtures to enjoy the benefits of LEDs—retrofit bulbs are available. Just be sure to replace each halogen bulb with equivalent wattage and the same base type.
Expect to pay about four times more for an LED bulb, but they use less energy and you'll get up to 20 years of life from one compared with only two or three years from a halogen. We paid $18 for the LED bulb in this photo vs. $4 for the halogen bulb.
