Heat lamp vs. heated towel rack: running cost
A heat lamp is cheaper to run: about $8 a year versus $32 for a heated towel rack at typical use and 17.99¢/kWh, a $23 difference.
| Heat lamp | Heated towel rack | |
|---|---|---|
| Typical watts | 250 W | 100 W |
| Watt range | 125–500 W | 40–400 W |
| Typical use | 30 minutes a day | 6 hours a day |
| Energy per year | 46 kWh | 175 kWh |
| Cost per hour | 4.5¢ | 1.4¢ |
| Cost per day | 2.2¢ | 8.6¢ |
| Cost per month | $0.68 | $2.63 |
| Cost per year | $8 | $32 |
| Per year in Hawaii (43.51¢) | $20 | $76 |
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What drives the difference
- Heat lamp: Bathroom heat lamps use 250 W infrared bulbs, often in pairs. They have no thermostat, so they draw full power whenever on.
- Heated towel rack: Most wall-mounted towel warmers draw 40-150 W. Many are wired to run 24/7, which costs about 3-4 times as much as running them on a timer.
Ways to cut either cost
Prevents hours of accidental full-power runtime.
See options on AmazonWarms towels at about 100 W instead of 500 W of lamps.
See options on AmazonAutomatic shutoff prevents 24/7 operation.
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Frequently asked questions
Which costs more to run, a heat lamp or a heated towel rack?
At typical use and the U.S. average rate (17.99¢/kWh), a heated towel rack costs about $32 a year versus $8 for a heat lamp. That's $23 more, or 3.8× as much.
How many watts do heat lamp and heated towel rack use?
A heat lamp typically draws 250 W (range 125–500 W). A heated towel rack draws 100 W (range 40–400 W). Watts alone don't decide cost. Hours of use, cycling and standby matter just as much.
Rates: EIA, 12 months ending 2026-07. Methodology.