12 Cheapest Ways to Lower Your Energy Bills in 2026
Most energy-saving advice falls into two useless extremes: either it's "just unplug your chargers" (saves roughly $3 a year) or "replace your entire HVAC system" (great, if you have $12,000 lying around). This guide aims for the middle ground — practical upgrades ranked by upfront cost, with honest estimates of what you'll actually save.
All savings estimates below are annual figures based on average U.S. energy prices ($0.16/kWh for electricity, $1.30/therm for natural gas) and typical household consumption patterns. Your results will vary based on climate, home size, and current equipment.
Free Actions: $0 Upfront, Real Savings
1. Adjust Your Thermostat Schedule (Save $100–$200/year)
The Department of Energy estimates you save roughly 1% on heating and cooling costs for every degree you set back your thermostat for 8 hours. In practice, that means setting your heat to 68°F during waking hours and 60°F while you sleep or are away can cut your heating bill by 10–15% without touching anything else.
Cooling works the same way in reverse. Setting your AC to 78°F when home (versus the common 72°F) and 85°F when away can reduce cooling costs by 20–30%. The sweet spot most people miss: pre-cooling or pre-heating before you arrive home, rather than blasting the system after the fact.
Already have a programmable thermostat? Check that it's actually programmed — surveys show roughly 40% of households with programmable thermostats use them in manual mode only.
2. Seal Electrical Outlets and Switch Plates (Save $25–$60/year)
Exterior-facing walls have electrical outlets and switch plates that sit directly in front of holes punched through your insulation layer. On a windy day, you can sometimes feel cold air coming through them. Foam outlet gaskets cost about $3 for a pack of 10 at any hardware store, take 90 seconds each to install, and require no tools beyond a screwdriver.
Not a dramatic fix, but it's genuinely free if you're already at the hardware store for something else. Start with outlets on your coldest exterior walls — typically north and west-facing in most of the U.S.
3. Install Draft Stoppers on Exterior Doors (Save $30–$80/year)
The gap under an exterior door that hasn't been adjusted in years can let in as much air as a 2-inch hole in your wall. Door draft stoppers — the fabric tube kind — cost $8–$15 and eliminate this instantly. More permanent: door sweeps (the metal kind that attach to the bottom of the door itself) run $15–$25 and last indefinitely.
While you're at it, check the weatherstripping around the door frame. If you can see daylight around the edges of a closed door, that stripping needs replacing — a job that costs $10–$30 in materials and takes about 20 minutes per door.
4. Use Ceiling Fans Correctly Year-Round (Save $50–$150/year)
Most people know ceiling fans cool rooms in summer. Fewer know that running them in reverse at low speed in winter forces warm air down from the ceiling — where it accumulates — without creating a wind-chill effect. Look for the small direction switch on the motor housing. In winter, the blades should spin clockwise (when viewed from below).
The savings come from being able to set your thermostat 2–4 degrees lower in summer and higher in winter without feeling the difference. That adds up to roughly $30–$70 per fan per year in moderate climates, more in extreme ones.
Cheap Upgrades: $50–$200 Upfront
5. Replace All Bulbs with LED (Save $80–$250/year)
If you still have incandescent or CFL bulbs anywhere in your home, this is the highest-return upgrade available for under $100. A 60-watt incandescent replaced by a 9-watt LED saves about $8 per year per bulb at typical electricity rates. A home with 30 bulbs that are on an average of 3 hours per day saves $240 annually — and LEDs last 15,000–25,000 hours versus 1,000 for incandescents.
The math on CFLs is less dramatic since they're already efficient, but LEDs are still meaningfully better and don't contain mercury. Budget $60–$100 to do your entire home if you buy multi-packs online.
6. Install Smart Power Strips in Entertainment Areas (Save $50–$120/year)
Your TV, cable box, game console, and associated devices collectively draw 50–150 watts in standby mode — 24 hours a day, 365 days a year. Smart power strips cut power to peripheral devices when the primary device (your TV) turns off. A $25–$45 strip pays for itself in 3–6 months in a typical setup.
Put a second one behind your home office setup. Monitors, printers, and desktop computers in standby add another 30–80 watts of phantom load that vanishes when the main computer turns off.
7. Add a Water Heater Blanket (Save $20–$45/year)
An insulating blanket for a gas or electric storage water heater costs $20–$30 and reduces standby heat loss by 25–40%. It's most effective on older tanks (pre-2010) in unheated spaces like garages or basements. Newer tanks have better factory insulation and may not warrant the investment.
Check the R-value of your existing tank first: if it's R-24 or higher (usually printed on the label), a blanket won't make much difference. If it's lower, or if the tank feels warm to the touch, it's losing meaningful energy.
8. Apply Weatherstripping to Windows (Save $80–$200/year)
Drafty windows are one of the most common sources of heating and cooling loss, and fixing them doesn't require replacement. V-strip (tension seal) weatherstripping for double-hung windows costs about $8–$15 per window and takes 20 minutes to install. Rope caulk — a temporary, removable option — is even faster at $3–$5 per window.
For windows you rarely open, interior window insulation film kits create a dead-air insulating layer for $5–$10 per window. They're not pretty, but in extreme climates they can reduce heat loss through a single-pane window by 50%.
Use our insulation savings calculator to estimate what better air sealing could save in your specific climate.
Moderate Investments: $200–$1,000 Upfront
9. Install a Smart Thermostat (Save $130–$250/year)
A programmable thermostat you have to manually configure is one thing. A smart thermostat that learns your schedule, integrates with weather forecasts, and lets you control everything from your phone is genuinely different. Google Nest and Ecobee both publish third-party-verified savings data showing average annual savings of $130–$180 versus conventional thermostats.
Smart thermostats run $100–$250 for the unit. Installation is straightforward if your current system has a common wire (C-wire) — most systems installed after 2000 do. Check the wiring before you buy. The Ecobee comes with a SmartSensor for a second room, which is useful if your system tends to overshoot in one area of the house.
Several utilities offer rebates of $50–$150 on smart thermostats. Check the state rebates index or call your utility directly before purchasing.
10. DIY Attic Air Sealing and Insulation Top-Up (Save $200–$600/year)
The attic is where most homes lose the most energy, and it's also where DIY makes the most financial sense. The actual insulation (blown cellulose or fiberglass) is relatively cheap — $500–$1,000 in materials for an average attic. What costs money when you hire a contractor is the labor.
The DIY sequence: first, seal air leaks around light fixtures, plumbing penetrations, and the attic hatch with fire-rated caulk or foam. This air sealing step is more important than the insulation itself — insulation slows conduction, but it doesn't stop convection through gaps. After sealing, add blown-in insulation to reach R-49 to R-60 (recommended for most U.S. climates). Most hardware stores rent blowing machines for free when you buy a minimum quantity of bags.
If you'd rather have a professional assessment first, see our guide on how an energy audit fits into the rebate process.
11. Replace Showerheads with WaterSense Models (Save $100–$250/year)
A standard showerhead uses 2.5 gallons per minute. WaterSense-certified models use 2.0 GPM or less while maintaining pressure through better nozzle design. For a family of four taking average-length showers, the switch saves 5,000–8,000 gallons of hot water annually — which means less energy heating that water.
Good low-flow showerheads run $25–$60. The savings show up on both your water bill and your energy bill, so actual combined savings are often higher than the energy number alone suggests.
12. Add a Programmable Plug-In Timer to Your Water Heater (Save $60–$100/year)
If you have an electric storage water heater, a $25 plug-in timer (or a $50 in-line timer for hardwired units) can cut its energy use by 5–12% simply by turning it off during hours you never use hot water — typically 10 PM to 5 AM, and mid-day if the house is empty. The tank retains heat well enough that first-morning hot water isn't affected.
This doesn't work for gas water heaters (the pilot light complicates things) and doesn't apply if you already have a heat pump water heater, which handles scheduling natively. But for an older electric resistance tank, it's one of the quickest payback upgrades on this list.
Putting It Together: What to Do First
| Action | Upfront Cost | Annual Savings | Payback Period |
|---|---|---|---|
| Thermostat scheduling | $0 | $100–$200 | Immediate |
| Outlet gaskets | $3–$10 | $25–$60 | 1–3 months |
| Door draft stoppers | $8–$25 | $30–$80 | 2–4 months |
| LED bulbs | $60–$100 | $80–$250 | 4–9 months |
| Smart power strips | $25–$90 | $50–$120 | 4–9 months |
| Window weatherstripping | $40–$120 | $80–$200 | 5–9 months |
| Smart thermostat | $100–$250 | $130–$250 | 8–18 months |
| DIY attic insulation | $500–$1,000 | $200–$600 | 1–4 years |
The most common mistake is jumping straight to the big-ticket items when the free and cheap fixes haven't been done. Air sealing and thermostat management are unsexy, but they consistently outperform new equipment installed in a leaky, poorly controlled house.
Once you've handled the basics, look at the HOMES rebate program and the HEAR program — both survived the One Big Beautiful Bill Act and remain available through 2031. These programs can reimburse 50–100% of the cost of insulation, heat pumps, and other larger upgrades depending on your income. Use our energy rebate calculator to see what you'd qualify for before spending anything.
For larger upgrades like heat pumps, our state-by-state guides (including California, New York, and Texas) show what additional utility and state incentives stack on top of federal programs. In some states, the combined incentives cover 70–80% of a heat pump installation.