How Much Does a Refrigerator Cost to Run?
A modern fridge costs about $8 a month to run. A pre-2001 model costs three times that — often more per year than a new one costs to buy.
A modern refrigerator uses roughly 525 kWh a year — about $8 a month or $97 a year at the US average rate of 18.44¢/kWh. A pre-2001 model uses closer to 1,380 kWh, costing about $254 a year.
That gap — around $157 a year — is the reason the old fridge in the garage is one of the few appliances genuinely worth replacing before it breaks.
- Per month
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- Per day used
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- kWh / year
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The garage fridge problem
| Type | Watts | Duty | kWh/yr | Cost/yr |
|---|---|---|---|---|
| Refrigerator (pre-2001) | 350 W | 45% | 1,380 | $254 |
| Refrigerator (modern) | 150 W | 40% | 526 | $97.0 |
| Chest freezer | 120 W | 35% | 368 | $67.9 |
| Mini fridge | 85 W | 35% | 261 | $48.1 |
Refrigerator efficiency standards tightened repeatedly between 1990 and 2014, and the improvement is dramatic — a 2020 fridge uses roughly a third of the electricity of a 1990 one while being larger. If a second fridge holds a case of drinks and some condiments, it is costing more per year than the drinks.
A fridge in an unheated garage runs harder in summer because the compressor fights a hotter room, and can malfunction in winter: many models use the freezer compartment's thermostat to trigger cooling, so when the garage drops below about 38°F the compressor stops running and the freezer thaws. Look for a "garage ready" model if the space is unconditioned.
Annual cost by state
| State | Rate | Cost | vs US avg | |
|---|---|---|---|---|
| Idaho | 12.35¢ | $64.9 | −32.0 | below average |
| Texas | 16.44¢ | $86.4 | −10.5 | below average |
| Florida | 15.17¢ | $79.7 | −17.2 | below average |
| Ohio | 19.52¢ | $103 | +5.68 | near average |
| Pennsylvania | 21.55¢ | $113 | +16.3 | above average |
| New York | 29.93¢ | $157 | +60.4 | above average |
| California | 33.25¢ | $175 | +77.8 | above average |
| Hawaii | 52.00¢ | $273 | +176 | above average |
What actually changes the number
Things that matter
- Age. By far the biggest factor. Nothing you do to a 1995 fridge brings it near a 2020 one.
- Door seals. Close the door on a dollar bill. If it slides out with no resistance, the gasket has failed and cold air is leaking continuously. Replacement gaskets are $50–$90 and fit most models.
- Condenser coils. Dust-blanketed coils cannot shed heat, so the compressor runs longer. Vacuuming them once a year is free and recovers 5–10%.
- Temperature settings. 37–40°F for the fridge, 0°F for the freezer. Colder than that is wasted energy — every degree below spec costs roughly 2–3%.
- Location. Beside an oven, in direct sun, or with no clearance behind it, the compressor works against a hotter environment.
Things that barely matter
- How full it is. The "full fridge is more efficient" advice is technically true and practically irrelevant — thermal mass smooths cycling but the effect is a rounding error. A full freezer helps slightly more.
- How often you open the door. Real, but small: normal household use accounts for around 7% of consumption.
- Ice makers and water dispensers. Add roughly 10–15%, which is a reason to prefer a model without one but not a reason to replace one you have.
Should you replace it?
Straightforward test. Find the model's annual kWh — it is on the EnergyGuide label, in the manual, or findable by model number — and multiply by your rate. Compare against a new model at roughly 400–500 kWh.
- Saving under $50 a year: keep it until it fails. A new fridge costs $700–$2,000 and manufacturing it has a real footprint too.
- Saving $50–$120 a year: replace it when convenient, and check for a utility rebate — many offer $50–$150 for recycling a working second fridge.
- Saving over $120 a year: replace it now. A payback under six years on an appliance that lasts fifteen is a clear win, and second fridges are usually the ones in this bracket.
Run your own numbers with the cost calculator — set the wattage to match your model's label.
Frequently asked questions
How much does a refrigerator cost to run per month?
About $8 a month for a modern model at the US average of 18.44¢/kWh. An older pre-2001 fridge runs closer to $21 a month.
Do refrigerators use a lot of electricity?
Individually no — about 150 W while the compressor runs. But a fridge runs around the clock, every day, for its whole life, which is why it still lands among the top ten household loads despite modest wattage.
Is it worth replacing an old refrigerator?
If it predates 2001, usually yes — especially a second fridge. The typical saving is $150 or more a year, which repays a mid-range replacement in five to seven years, and many utilities pay a rebate to haul the old one away.
What temperature should a refrigerator be set to?
37–40°F for the fridge and 0°F for the freezer. Setting either colder wastes energy without improving food safety.
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