How Much Energy Are Your Old Appliances Using?

By James Fitzgerald

August 25, 2026

Most people find out what an old appliance costs them by accident. A refrigerator gets moved out to the garage when a new one arrives and runs there for another decade. The power bill climbs each year, and nothing obvious explains it. The appliance still works. That’s usually why nobody touches it.

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Appliance energy consumption has moved one way since the late 1980s, when the first federal efficiency standards took effect. Every round through 2024 pushed manufacturers toward less power for the same job, though not at the same rate in every category.

Do Appliances Built in the ’80s, ’90s and Early ’00s Use More Energy Than Their Modern Counterparts?

Yes, and on a refrigerator the gap is wide enough to see on a bill. A kilowatt-hour (kWh), which is the electricity a 1,000-watt appliance uses in an hour, is the unit your utility bills you in. A unit built in the mid-1980s can draw around 1,200 kilowatt-hours a year. A comparable new refrigerator runs 350 to 450 kWh. That gap is why an old second fridge in the garage often costs more than the new one indoors.

Dryers work out differently, and the 25-year-old machine is the clearest case. It isn’t far from a new conventional dryer on the heating side, because the element that makes the heat hasn’t changed much. What changed is how long it stays on. An older dryer runs a timer and heats the full cycle, whether the clothes came dry at 30 minutes or not. A newer one runs a moisture sensor and stops when the load is dry.

The larger jump is a heat pump dryer, which recovers the heat it has already made instead of venting it outdoors. Lab testing puts those at roughly a third to half what a conventional model does, though one field study of eight homes measured a saving closer to a third, so the gain in a real house may be smaller.

Why Newer Appliances Draw Less Power

The standards are the short answer. The National Appliance Energy Conservation Act set the first national minimums in 1987, and the Department of Energy has revised them upward several times since. Manufacturers met each revision with hardware changes rather than smaller machines, including:

Variable-speed motors.
An older compressor, which is the motor-driven pump that does the cooling, ran flat out or not at all. A variable-speed one runs slower for longer, and that beats repeated full-power starts.
Foamed-in insulation.
Refrigerator and freezer walls moved from fiberglass to injected polyurethane foam, which insulates better at a thinner wall, so the compressor cycles less often.
Sensors instead of timers.
A moisture sensor in a dryer or a soil sensor in a dishwasher ends the cycle when the job is done, whereas a timer runs its full length regardless of what the load needs.

The gains didn’t land evenly. Refrigerators, freezers, dishwashers and washing machines have had their minimums tightened again and again since, so an old refrigerator, dishwasher or washing machine is much further behind its modern replacement than an old freezer is. Clothes dryers have been covered by federal standards since 1988, but the minimums barely moved, and Energy Star only finalized a dryer specification in 2014, effective at the start of 2015. That is why a 25-year-old dryer compares better with a new one than a 25-year-old fridge does.

What Do Energy Star and the EnergyGuide Label Tell You?

The Federal Trade Commission requires the yellow EnergyGuide label on new refrigerators, freezers, dishwashers and clothes washers, though not on dryers or ranges. It prints an estimated yearly operating cost in dollars, with a scale showing the range of costs for comparable models, and the estimated yearly electricity use in kilowatt-hours below that. Compare the kWh numbers between two machines rather than the dollar estimates next to them, because those dollars assume a national average rate that probably isn’t yours.

Energy Star is a certification rather than a disclosure. The Department of Energy has led the program since March 2026, when it took over from the Environmental Protection Agency, and some ENERGY STAR pages still name the EPA while the handover finishes. A model earns the label by beating the federal minimum for its class, by a margin the program sets per category. For refrigerators the program sets that margin at 10% less energy use than the federal minimum.

On an installed appliance the label is long gone, but the model number on the rating plate, which sits inside the door frame or on an interior wall on a refrigerator and behind the door or under the control panel on a range, will pull up the manufacturer’s spec sheet in a web search, and that sheet carries the same yearly kWh figure. That plate usually carries the build date too, or a serial number encoding it, so it also tells you how old an inherited unit is.

How to Tell What an Old Appliance Costs You

Two numbers give you the answer. The first is the yearly kilowatt-hour figure, from that spec sheet or from the EnergyGuide label if it’s still attached. The second is your electricity rate, printed on your utility bill. If the bill shows more than one rate, tiered or peak and off-peak, use the one covering the hours the appliance actually runs. If the bill shows no rate at all, divide the month’s total charge by the kilowatt-hours listed on it. That figure carries the fixed monthly charges, which don’t change when you swap an appliance, so treat it as a ceiling rather than an exact rate. Multiply the two, and you have the annual running cost.

Say the spec sheet lists 1,150 kWh and your bill works out to 17 cents, or $0.17, a kilowatt-hour. That refrigerator costs about $196 a year, against about $68 for a new one at 400 kWh. The difference is roughly $128 a year.

When no spec sheet turns up, measure it. A plug-in energy monitor, which is a device costing around $30 that sits between the appliance plug and the outlet, totals the electricity that passes through it. Leave it connected a full week rather than a single cycle, so the reading covers normal use. Most read out in kilowatt-hours already, and if yours shows watt-hours, divide by 1,000. Multiply that week’s figure by 52 for the year, then by your rate.

A fridge in a garage swings with the weather, so a January week and a July week won’t agree. The monitor only fits a standard 120-volt plug. An electric dryer or a range runs on a 240-volt outlet instead, identified by its oversized three- or four-prong plug, while a gas dryer takes an ordinary 120-volt outlet the monitor fits, so read the wattage off the rating plate, which sits inside the door frame on a dryer and behind the door or under the control panel on a range, multiply by the hours you run it in a week and convert the same way, bearing in mind that the plate gives the most the machine can draw rather than what it actually uses. If that plate gives amps rather than watts, multiply the amps by the volts. On a gas dryer the monitor sees only the drum motor, the igniter and the controls, because the heat comes off the gas side of the bill.

A third route costs nothing and gives a measured figure rather than a ceiling. Read your utility meter before and after a full cycle with nothing else large running, and the difference is what the cycle drew.

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When Replacing an Old Appliance Pays for Itself

The annual saving is only half the decision. The other half is how many years you collect it. A refrigerator runs about 13 years, a dryer about 13 and a washer about 10, so a unit past that window is on borrowed time, whatever it costs to operate.

Multiply the annual savings by the years you expect to keep the replacement, then set that against the price of the model you would buy. If the saving over those years covers the price, the swap pays for itself. At $128 a year across 12 years, the refrigerator above returns about $1,536.

Run the same arithmetic on the dryer, and it usually doesn’t clear because the machine wears out before the savings catch up. Replace that one when it fails, unless you are moving to a heat pump model. On that swap, the savings only have to cover what a heat pump costs above a conventional dryer, not its full price.

What Is Phantom Load, and Can a Power Strip Stop It?

Phantom load, which is the electricity a device draws while switched off or idle, gets more attention than it earns. Across a whole house, it is generally put at 5 to 10% of residential electricity use. Almost none of that belongs to the appliances above, since a refrigerator runs continuously by design and has no idle state to cut.

What does draw it is anything holding a clock, a standby light, a remote receiver or a charger left in the wall. Measure that draw with the plug-in energy monitor above, which gives a number rather than a guess.

A switched power strip lets you cut power to a cluster of devices that idle together, like a television with its streaming box and sound bar. An advanced power strip does it automatically by sensing when the main device powers down, and it costs more than a plain switched one.

Keep major appliances off both kinds. A refrigerator should plug straight into a grounded wall outlet, and manufacturers recommend a circuit serving only that appliance, and power strips aren’t rated for high-load appliances like refrigerators in the first place. If yours shares an outlet with something else, move the other appliance off it and treat a dedicated circuit as an electrician’s job.

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