Incandescent light bulbs

Traditional incandescent bulbs are terribly inefficient. Notice how hot they get? Over 95% of the energy is wasted as heat for every watt drawn. That means most of the energy you’re paying for is completely wasted. Plus, these bulbs are fragile! The smallest bump can damage that little delicate filament inside or break the bulb entirely.

Why are they inefficient, highly breakable light bulbs still used? Here are a few reasons:

• They’re cheap! Manufacturing incandescent bulbs costs less, which is reflected in their store price.
• They’re easier to make (which is why they’re cheaper to make).
• People are familiar with them. Sometimes, it’s hard to make a change.

Incandescent light bulbs last about 1,000 hours—not that long. However, an energy-efficient bulb can last 10 to 25 times longer! Making the switch helps the environment and saves energy costs and bulb replacement costs down the road.

Energy-efficient light bulbs

Energy-efficient light bulbs are becoming more popular across Canada. ENERGY STAR® lighting standards make it easier for homeowners to research and find the right replacement bulbs for their homes. And you have options.

Halogen incandescent bulbs

Halogen incandescent bulbs were the first new type of energy-efficient light bulbs to hit shelves and to meet the Energy Star® the minimum standard. They have a 28% energy savings compared to traditional incandescent bulbs. They also last about three times longer.

Halogen bulbs still use that little metal filament to emit light. Unlike traditional bulbs, halogen light bulbs are made with a special, hardened glass and a bulb-within-a-bulb design that prevents the halogen from leaking out. That helps prevent the filament from damage and extends the bulbs’ lifespan.  

Compact fluorescent lamps (CFL)

Compact fluorescent lamps (CFLs) are energy-efficient light bulbs, sometimes called compact fluorescent lamps. Energy Star®-qualified CFLs use up to 75% less energy and can last up to 10 times longer than traditional incandescent light bulbs. A CFL can pay for itself in energy savings in about eight months and continue to save you money every month after that!

Many CFLs have that spiral shape, but you can also get them as enclosed bulbs. CFLs provide a more natural yellow light, which makes them perfect for nighttime use if you're not a fan of cold, white lighting.

Note: CFLs contain mercury. So, when they burn out, you must take them to the eco-centre to be recycled. Please don’t throw them in the garbage!

Light-emitting diodes (LEDs)

LED light bulbs are by far the longest-lasting and most efficient option on the market. They’re powered by chips that convert energy into light and give a full brightness as soon as you flip the switch.

LEDs do not get hot when they’re in use. ENERGY STAR® LED bulbs use up to 90% less energy than traditional incandescent bulbs! That’s incredible energy savings! LEDs can last 15 to 25 times longer than their old-school counterparts.

Next time you replace your light bulbs, make the switch to a more efficient bulb. You can read more in Natural Resources Canada’s guide to energy-efficient lighting.