6 Hidden Energy Drains Driving Up Your Utility Bills
Many of the biggest home energy wasters are easy to overlook, but simple fixes can lower costs, reduce waste, and improve comfort
Electric bills in the US increased by about 13 percent in 2025, and electricity is nearly 40 percent more expensive than in 2020, based on federal home energy and economic data. This sharp rise is pushing many households to rethink their energy use and creating added motivation to make their homes more efficient.
The good news? Many of the most effective fixes are relatively easy and inexpensive.
“After 18 years of auditing homes, I’ve found that high utility bills are rarely the fault of the thermostat,” says Greg Field, owner and senior energy consultant at PGT Home Energy Solutions, an Arizona-based company specializing in home energy storage and efficiency solutions. “Most energy drains are hidden in plain sight, keeping your meter spinning even when the AC is off.”
Here are some common offenders—and how to fix them affordably to reduce waste, lower bills, and create a more comfortable living environment.
Leaky doors and windows
Air leakage into and out of a home can increase heating and cooling costs by 30 percent or more, according to the US Department of Energy (DOE). It also puts extra strain on your HVAC system and can invite unwanted pests.
A bit of caulk, weatherstripping, or foam around windows, doors, and recessed lighting can go a long way toward solving the problem. Also, add insulation wherever possible, particularly around exposed ductwork in the attic.
Outdated appliances
Most newer appliances consume far less energy than their older counterparts. “I've stepped inside kitchens where a 15-year-old refrigerator is costing the homeowner an additional $150 a year, when compared with a newer model,” says Daniel Vasilevski, director and owner of Pro Electrical, an Australia-based electrical services company.
When upgrading, look for Energy Star-certified models, and consider a heat-pump dryer for extra savings. You can save even more by washing clothes in cold water; and if you live in a warm climate, keep that old garage freezer in a climate-controlled space.
Lighting
Switching from incandescent bulbs to LEDs can save about $225 a year and can last up to 25 times longer, according to the DOE. For reliable efficiency, opt for Energy Star-certified bulbs. Seek out warmer color temperatures to replicate the feel of incandescent light, and consider adding dimmers or timers to boost savings further.
Standby power
Many electronic devices consume energy even when they’re turned off. These “vampire” energy draws can account for 5 to 10 percent of a home's total electricity use, costing the average household as much as $100 per year.
Unplug office equipment, chargers, video game consoles, TVs, cable boxes, kitchen appliances, and bathroom devices when not in use. To make the task easier, consider adding a power strip, smart power strip, or smart plug.
Smart thermostats
Smart thermostats can save 8 percent a year on power bills, or roughly $50. Some models track your phone’s location and switch to energy-saving mode when you leave the house. Check with your utility company for incentives and rebates for buying one.
For added comfort when lowering the thermostat, use a ceiling fan to circulate air: counterclockwise in summer for cooling, clockwise in winter for warmth.
Kate Colarulli, executive vice president of CleanChoice Energy, a US electricity supplier focused on renewable energy, also emphasizes servicing HVAC systems annually, changing air filters regularly, and cleaning dust from vents. “Not only is this good for your lungs,” she says, “but you may even increase the system’s lifespan.”
Water heaters
The DOE reports the average home spends $400 to $600 a year heating water, making hot-water heaters the second-largest utility expense. Older models are often less efficient. “A unit more than 10 years old also works much harder than necessary just to hold temperature, due to sediment buildup,” says Emily Demirdonder, director of Proximity Plumbing, an Australia-based plumbing and maintenance service.
To enhance efficiency, flush the tank once a year. The US Environmental Protection Agency (EPA) recommends setting the temperature to 120 degrees Fahrenheit—but not lower, which can allow bacteria growth. When upgrading, consider an ultra-efficient heat-pump model or an on-demand system.
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To discover even more ways to improve your home’s energy efficiency, consider asking your utility company for a home energy audit, which is often free.
“Beyond saving money on the energy bill, using less energy is better for the planet, especially as our energy grids continue to see demand soar,” says Colarulli. A home energy audit can pinpoint exactly where your house is wasting power and help you make smarter choices for both your wallet and the environment.