LED Christmas lights beat incandescent lights on almost every count. According to the U.S. Department of Energy, LEDs use at least 75% less energy and can last up to 25 times longer. They also stay cool to the touch, while incandescent bulbs give off most of their energy as heat.

Christmas lights do more than decorate. Their warm glow and bright colors can lift your mood, spark happy memories and bring families together. This article looks at how light and color affect how we feel, and why decorating for the holidays can be good for your wellbeing.

It’s better not to leave Christmas lights on all the time. Running them 24/7 raises your power bill, wears out bulbs faster and adds fire risk, especially with older incandescent lights. Use LED lights and a timer so they shine in the evening and switch off overnight and when you’re away.

How many Christmas lights you can string together depends on their wattage and your circuit. A 15-amp household circuit can safely handle about 1,440 watts (80% of its capacity). Divide that by one strand’s wattage, and always follow the maker’s limit on connected strands.

Use C7 lights for smaller spaces, indoor decor and a softer glow, and choose C9 lights for rooflines and large outdoor displays that need to be seen from the street. C9 bulbs are bigger and brighter, while C7 bulbs are smaller and more subtle. LED versions of both save energy.

Yes, Christmas lights can run on 12 volts if they’re made for it. Most 12V Christmas lights are LEDs, which use little power and can run from a transformer, a battery pack, a car battery or a solar panel. Lower voltage also means less risk of electric shock.

The main types of Christmas lights are traditional incandescent bulbs, energy-efficient LEDs and battery-operated lights, and each comes in several bulb styles. This guide explains how each type works, its pros and cons, and where it looks best in your holiday display.

To measure for Christmas lights, measure your rooflines, eaves, railings, windows and doors, and the height and width of your trees and bushes. Add up the totals to know how many feet of lights to buy, then check each strand’s wattage so you don’t overload a circuit.

LED Christmas lights usually flicker because of the way they handle household AC power, a mismatched dimmer, loose bulbs or connections, a failing power supply, or an overloaded circuit. Many flickers can be fixed by tightening connections, removing dimmers or switching to lights with better built-in circuitry.

Start planning your Texas Christmas lighting early, ideally in September or October. That gives you time to choose a design, measure your home and book a professional installer before the holiday rush. Hiring a pro also takes care of the ladder work, electrical safety and takedown.