Are LED Bulbs Really Worth It? The Real Savings vs Incandescent
LED bulbs cost more on the shelf than the old incandescents they replace, which makes people hesitate at the store. But the sticker price is the wrong number to look at — the bulb’s real cost is what it draws from the wall every night for years. Once you count that, the math flips hard. Here’s whether LEDs are actually worth it, with the real numbers.
Yes — LEDs are worth it almost everywhere. A 60W incandescent costs about $18/year to run; the 9W LED that replaces it costs about $3. The LED pays back its higher price in a few months and then saves you money every year for its ~15-year life.
The real cost isn’t the price tag
An incandescent bulb is cheap to buy and expensive to own. It turns roughly 90% of the power it draws into heat, not light — so most of what you pay for never becomes brightness. An LED flips that, which is why it hits the same lumens at a fraction of the watts. Multiply that gap across every bulb in a house running a few hours a night and it adds up fast. To see the exact figure for your home, use our light bulb cost calculator.
| Bulb (60W-equivalent) | Watts | Cost/year | 10 bulbs/year |
|---|---|---|---|
| LED | 9W | ~$2.80 | ~$28 |
| CFL | 14W | ~$4.30 | ~$43 |
| Incandescent | 60W | ~$18.60 | ~$186 |
Assumes 5 hours/day at $0.17/kWh. Your rate and hours change the totals — the calculator uses your real numbers.
When an LED might not be worth it
Honesty check: there are a few spots where the payback is slow. A bulb in a closet you open for 30 seconds a day barely uses any power, so switching it saves almost nothing. Same for a rarely-used guest room. The savings come from bulbs that run a lot — living rooms, kitchens, porch lights, anything on for hours. Start there and work outward.
- Switch first: living room, kitchen, outdoor, and any all-evening fixture.
- Switch eventually: bedrooms and hallways.
- Low priority: closets and rooms used a few minutes a day.
Frequently asked questions
How long do LED bulbs last?
Typically 15,000–25,000 hours — roughly 15 years at a few hours a day. That’s 10–20× an incandescent, so you also stop buying replacement bulbs.
Do LEDs really use 85% less power?
Yes, for the same brightness. A 9W LED and a 60W incandescent both put out about 800 lumens — the LED just wastes far less as heat.
Is it worth replacing incandescents that still work?
For high-use bulbs, yes — the running-cost savings usually beat the price of the LED within months, even throwing away a working bulb. The one exception is a bulb you barely ever switch on; leave those until they burn out, since the savings there are tiny and not worth the upfront cost.
LEDs are worth it for any bulb you actually use. Start with your high-hour rooms, where the savings repeat every year. Run your own wattage and rate through the cost calculator to see your exact payback.