Vampire Appliances: 10 Devices That Drain Power When They're Off
Roughly 103 wattsof a typical home's electricity draw comes from devices that are switched off. Standby power never stops, so those watts run 8,760 hours a year — 900 kWh, or about $144 a year at the US average rate of $0.16/kWh.
A single line item accounts for more than half of that, and it isn't the phone charger everyone tells you to unplug. Here's the whole list, worst first.
Standby Power, Device by Device
| # | Device (switched off) | Standby watts | kWh/year | Cost/year each | Typical per home | Cost/year total |
|---|---|---|---|---|---|---|
| 1 | Cable / satellite box with DVR | 30W | 262.8 | $42.05 | ×2 | $84.10 |
| 2 | Game console in rest mode | 12W | 105.1 | $16.82 | ×1 | $16.82 |
| 3 | AV receiver or soundbar on standby | 6W | 52.6 | $8.41 | ×1 | $8.41 |
| 4 | Smart speakers | 3W | 26.3 | $4.20 | ×2 | $8.41 |
| 5 | Garage door opener | 5W | 43.8 | $7.01 | ×1 | $7.01 |
| 6 | Desktop PC and monitor asleep | 4W | 35.0 | $5.61 | ×1 | $5.61 |
| 7 | Televisions in standby | 2W | 17.5 | $2.80 | ×2 | $5.61 |
| 8 | Microwave clock and control panel | 3W | 26.3 | $4.20 | ×1 | $4.20 |
| 9 | Coffee maker with a clock | 1.5W | 13.1 | $2.10 | ×1 | $2.10 |
| 10 | Phone and laptop chargers left plugged in | 0.3W | 2.6 | $0.42 | ×4 | $1.68 |
| Whole-home total | 103W | 900 | $144 |
Typical standby draw for each device in its off, rest, or quick-start state, at the US average rate of $0.16/kWh. Your figures scale linearly with your rate — multiply by your local rate ÷ $0.16. Not every home has every device: skip the cable boxes and the same list falls to about 43W, or $60 a year.
Price your own standby load
Standby power is just watts × hours, and standby runs 24 hours a day. Put your device wattage into the appliance cost calculator with 24 hours per day and your real electricity rate to see what it costs you. The shortcut, if you want it: one watt of standby draw costs about $1.40 a year at $0.16/kWh.
Open the appliance cost calculator →1. Cable / satellite box with DVR
~$84/year30W in standby · 262.8kWh/year each · 2 per typical home
Why it draws power: The worst vampire in most homes by a wide margin. A DVR box pulls almost as much with the light off as it does mid-episode — it keeps the tuner warm, downloads the program guide, and records scheduled shows. Most measure somewhere in the 15-30W range whether you're watching or not, and the average cable household has two of them.
What to do: Unplug or smart-strip the box in any room where it's used a few hours a week. A streaming stick draws about 2-3W in standby instead of 30W — cutting the cord removes this line item almost entirely.
2. Game console in rest mode
~$17/year12W in standby · 105.1kWh/year each · 1 per typical home
Why it draws power: Rest mode isn't off. A current-gen console holds 10-15W around the clock so it can download patches overnight, charge a controller, and resume your game in three seconds instead of thirty.
What to do: Turn rest mode off in the power settings — updates still install the next time you power on. If you want the fast resume, at least disable 'stay connected to the internet' so it isn't awake all night.
3. AV receiver or soundbar on standby
~$8/year6W in standby · 52.6kWh/year each · 1 per typical home
Why it draws power: Home theater gear listens for an HDMI wake signal and a remote press at all times. Receivers with an 'instant on' or 'quick start' setting skip the boot delay by staying half-awake, which is exactly why they draw several watts doing nothing.
What to do: Turn off quick-start / instant-on in the setup menu. You'll wait two extra seconds for sound and cut most of the standby draw.
4. Smart speakers
~$8/year3W in standby · 26.3kWh/year each · 2 per typical home
Why it draws power: A smart speaker is never off — the microphone array and Wi-Fi radio are the product. Around 2-3W each, all year, and homes rarely have just one.
What to do: Not much to do here beyond owning fewer of them. This is a load you accept rather than fix; it's on the list so you know it isn't free.
5. Garage door opener
~$7/year5W in standby · 43.8kWh/year each · 1 per typical home
Why it draws power: It runs its motor for maybe 40 seconds a day and then spends the other 23 hours, 59 minutes powering a radio receiver, a safety-sensor beam, and often a Wi-Fi module. Nearly all of its annual energy is standby.
What to do: There's no practical fix short of replacing it — you can't unplug the thing you need to open the garage. Worth knowing about, not worth fighting.
6. Desktop PC and monitor asleep
~$6/year4W in standby · 35.0kWh/year each · 1 per typical home
Why it draws power: Sleep is cheap but not free: the PC holds RAM contents and watches for a keypress or a wake-on-LAN packet, and the monitor keeps its logic board alive. The real cost of a desktop is leaving it fully awake instead — that's a 200W+ problem, not a 4W one.
What to do: Sleep is already the right answer. Set the PC to sleep after 15 minutes idle and the monitor after 5 — that's a far bigger win than chasing the last 4 watts.
7. Televisions in standby
~$6/year2W in standby · 17.5kWh/year each · 2 per typical home
Why it draws power: Modern TVs are genuinely good at this — a couple of watts to watch for the remote. The catch is 'quick start' or 'instant on' modes, common on smart TVs, which keep the OS resident and can push standby draw up sharply.
What to do: Leave standby alone, but turn off quick-start in the TV's power settings. Also disable any 'always ready' voice assistant you don't use.
8. Microwave clock and control panel
~$4/year3W in standby · 26.3kWh/year each · 1 per typical home
Why it draws power: The single most-cited vampire, and one of the more honest ones: a microwave often uses more electricity over a year showing you the time than it does heating food, simply because it displays the clock 8,760 hours a year and cooks for maybe 60.
What to do: Nothing to do unless the clock genuinely doesn't matter to you. Unplugging it saves a few dollars a year and costs you a clock.
9. Coffee maker with a clock
~$2/year1.5W in standby · 13.1kWh/year each · 1 per typical home
Why it draws power: Same story as the microwave: the display and the auto-brew timer sip power continuously. A model with a physical switch and no display draws nothing when off.
What to do: If you don't use the auto-brew timer, put it on a switched outlet or a power strip you actually flip.
10. Phone and laptop chargers left plugged in
~$2/year0.3W in standby · 2.6kWh/year each · 4 per typical home
Why it draws power: The classic advice — unplug your chargers! — turns out to be the smallest item on this list. A modern USB charger with nothing attached draws a fraction of a watt. Four of them scattered around the house cost you under two dollars a year, combined.
What to do: Genuinely not worth the walk. Spend the effort on the cable box instead. (Old, heavy, warm-to-the-touch power bricks are the exception — those can pull several watts and are worth unplugging.)
The Takeaway
Vampire power is unevenly distributed. The top item on this list costs more than the other nine combined, and the item everyone repeats — unplug your phone charger — costs less than a coffee. Standby draw is a watts problem, and only a handful of devices have watts worth chasing.
So do the two things that work: put the entertainment center on a smart power strip, and turn off every “quick start,” “instant on,” and “rest mode” setting you find. Then stop worrying about the microwave clock.
Related Guides
Frequently Asked Questions
Which appliances use power when they're off?
Anything with a remote, a clock, a Wi-Fi radio, or an instant-on mode keeps drawing power after you switch it off. The biggest offenders are cable and satellite boxes with a DVR (around 30W in standby, nearly the same as when you're watching), game consoles in rest mode (10-15W), AV receivers and soundbars with quick-start enabled, garage door openers, smart speakers, and any appliance with a lit clock display. Together they add up to roughly 103W of continuous draw in a fully-equipped home — about $144 a year at the US average rate of $0.16/kWh.
How much does standby power cost per year?
Standby power is a continuous load, so the math is simply watts × 8,760 hours. One watt of standby draw costs about $1.40 a year at $0.16/kWh — a handy rule of thumb. A 30W cable box therefore costs about $42 a year to leave "off," and the ten devices on this list total roughly $144 a year (900 kWh) in a household that has all of them.
Is unplugging phone chargers actually worth it?
Not really. A modern USB charger with nothing plugged into it draws around 0.3W — about $0.42 a year. Four of them cost you under two dollars annually. The advice is famous because it's easy to give, not because it's effective: unplugging one cable box instead saves about 100× as much. Old, heavy transformer-style bricks that feel warm when idle are the exception.
What's the fastest way to cut vampire power?
Two moves cover most of it. First, put the entertainment center — cable box, console, receiver, TV — on a smart power strip that cuts the peripherals when the TV switches off. Second, turn off "quick start" / "instant on" / "rest mode" in each device's power settings. Cut the cord entirely and this list drops from about $144 to roughly $60 a year on its own.
How do I measure my own standby power?
A plug-in power meter reads watts directly. Put the device in its off state, wait a minute for it to settle, and read the number — then multiply by 8.76 to get kWh per year. For a whole-home figure, switch off everything you can at the panel or by hand late at night, then watch how fast your meter still spins. Whatever remains is your idle load.