Apex Lighting LED Puck Lights. Change out your existing Halogen Puck Lights with these LED Puck Lights for Brighter Light, Less Heat, Less Energy and more Life Hours. The LED Puck Lights only use 2.2w of energy compared to 20w for halogen ones. LED Puck Lights also put out almost no heat and should last 10+ years. Apex Lighting's LED puck light can either be surface mounted or recessed into a 2.15" hole. These lights are available in a satin nickel, black, or white finish and with warm white or cool white LEDs.