Energy efficiency at home starts with the simplest actions. While energy-saving appliances and LED bulbs have improved household consumption, a significant portion of wasted electricity happens quietly through “phantom power” or “vampire energy.” According to the U.S. Department of Energy, these so-called idle electronics can make up nearly 10% of a household’s electric bill—with some homes losing $100 or more annually to devices not actively in use.
Eliminating unnecessary standby consumption is an easy and cost-effective way to lower household energy bills and reduce carbon emissions. Here are 15 common home appliances that drain energy even when not used.
Television and Entertainment Systems
Televisions, gaming consoles, soundbars, streaming boxes, and similar electronics draw power in standby mode. According to the Natural Resources Defense Council (NRDC), the average TV and related entertainment equipment consume approximately 7% of a home’s yearly electricity use—even when “off.”
Unplugging or using a power strip with a switch can save American households up to $24 per year, depending on device type and usage. Depending on your equipment, standby power from TVs and peripherals can add $16–$21 or more to your annual energy bill.
Game Consoles
Game consoles—including PlayStation, Xbox, and Nintendo devices—remain significant energy consumers when idle. NRDC data shows a modern gaming console can use 10–15 watts in “instant on” or standby mode, rivaling a power-hungry laptop.
Over a year, a single console left plugged in can cost households $25–$40 in wasted electricity. Leaving consoles on standby can account for over 1% of an average home’s total annual energy use.
Desktop Computers and Monitors
Desktop PCs and monitors continue to draw power even in sleep mode. A Department of Energy audit reveals that desktop computers left “asleep” but plugged in could waste up to 44 kWh annually, translating to roughly $6 per machine yearly.
By fully switching off and unplugging, American households can save up to $22 per year on desktops and $10 on monitors. Combined, computers and monitors use about 4% of the overall household electricity annually.
Chargers and Power Adapters
Even when not connected to your device, chargers for phones, tablets, and laptops still use energy. The Lawrence Berkeley Lab found that a single phone charger draws around 0.26 watts when plugged in with no device attached.
Though low on their own, multiplied across a household and year, these “vampire” chargers can add up. Unattended chargers contribute less than 1% of total home electricity use but can add $10–$15 to the annual bill if many are always plugged in.
Microwave Ovens
Digital displays, clock circuits, and innovative features inside a microwave oven require a small but continuous current. According to the Energy Saving Trust, a microwave not in active use can consume up to 3.08 kWh annually (~$8-$12) to power its clock and internal memory.
Microwaves left plugged-in waste up to 15% of their total energy consumption on standby functions.
Coffee Makers
Intelligent coffee machines, single-serve brewers, and devices with clocks or scheduling features use power to hold preferences and timer settings. The Australian Department of Industry, Science, Energy, and Resources found that unplugging your coffee maker can reduce annual standby energy use by 0.5% of your household total.
According to NRDC, leaving a coffee maker plugged in could cost $4–$8 in unnecessary standby power each year.
Toaster Ovens and Toasters
Compact kitchen gadgets like toaster ovens and pop-up toasters frequently include digital displays or remain “on call,” drawing current even when off. The Center for Sustainable Systems estimates unplugging these devices can save 1–2 kWh per device annually, or about $2–$4.
Over time, those savings add up across all the small appliances in a kitchen. The U.S. Department of Energy advises unplugging less frequently used appliances to limit further “phantom” energy loss.
Blenders and Food Processors
Unlike many other kitchen gadgets, blenders and food processors are typically short-use appliances. However, models with electronic controls or innovative features may draw small standby currents.
The Energy Trust of Oregon notes that unplugging these after each use eliminates unnecessary standby use, which, multiplied over many months, prevents wasted power. The aggregate standby consumption of small appliances can reach 15% of an individual’s kitchen energy bill.
Dishwashers and Washing Machines
Both dishwashers and front-load washing machines maintain a low energy draw, even when not operating, to power internal clocks and sensors or enable “delay start” features. The International Energy Agency identifies these as “vampire” appliances.
Fully turning machines off after use could save an American household $10–$20 per year per machine. Vampire appliances like dishwashers and washers can waste 50–100 kWh annually if left in ready mode, as reported by the IEA.
Air Conditioners
Window, portable, and some ductless split air conditioners with remote control capabilities maintain continuous “listening” states. When left on standby, NRDC research shows these units can waste $15–$30 a year.
Over time, this idle draw becomes significant. The U.S. Energy Information Administration (EIA) reports that air conditioning accounts for approximately 12% of household energy costs and 17% of electricity expenditures. Air conditioners in standby can increase an annual energy bill by more than 3% just from standby consumption alone.
Printers and Scanners
Desktop printers and scanners typically enter a “ready” state rather than truly shutting down. According to the Lawrence Berkeley National Laboratory, keeping a printer or scanner plugged in and ready can waste 20–30 kWh per device or up to $15 annually.
Standby power for printers and office devices represents up to 10% of energy use in a typical home office.
Smart Speakers
Devices like Amazon Echo, Google Home, and Apple HomePod rely on “always-listening” microphones to respond to voice commands anytime. These microphones draw a small but continuous amount of electricity to stay operational. According to an NRDC study, a single smart speaker can cost $3–$4 per year to remain constantly powered.
While this amount may seem insignificant, the costs can quickly increase as more households adopt multiple smart speakers or add other connected devices. Over time, this growing number of devices contributes to increased energy bills and overall energy demand, making it an essential consideration for environmentally conscious consumers.
Electric Toothbrush Chargers
Many homes leave electric toothbrush bases plugged in indefinitely. The UK’s Energy Saving Trust notes that unplugging chargers once the battery is charged prevents unnecessary energy drain.
Although each charger uses minimal power (typically <0.5 watts), multiples can add $1–$2 to annual costs if always left on standby.
Fans and Air Purifiers
Both table fans and air purifiers frequently run nonstop and may remain connected to power even when switched “off.” The U.S. Department of Energy states that unplugging these units after use reduces fire risks and saves electricity.
Fans and air purifiers left on standby can waste $5–$8 per device per year in energy.
Lamps and Nightlights
Modern decorative lamps and nightlights include transformers or ambient sensors that pull electricity regardless of switch position. The Carbon Trust (UK) recommends unplugging when unnecessary, especially for extended absences, to avoid unnecessary costs.
Each lamp or nightlight left plugged in and unused can add $1–$3 per year in unnecessary consumption. Over several lamps and several years, this adds up considerably.
Disclaimer – The Finance Key does not provide and does not intend to provide financial, investment, tax, or legal advice. Information contained in this article is for informational and educational purposes only. This list is solely the author’s opinion based on research and publicly available information. Including links to third-party content is not an endorsement by The Finance Key of such content or services. Please do your due diligence and use your discretion.
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