How many watts does a refrigerator use?
Short answer: published charts put a typical fridge at roughly 100–400 running watts and 800–2,200 starting watts, depending on size and age. The average draw over a day is much lower because the compressor cycles on and off.
What the published charts say
| Source | Running W | Starting W |
|---|---|---|
| Honda wattage guide — ENERGY STAR refrigerator/freezer | 132–192 | 1,200 |
| Honda sizing example — refrigerator | 200 | 1,600 |
| Champion wattage chart — refrigerator | 150–400 | 800–1,200 |
| Generac GP6500E brochure — refrigerator/freezer (conservative worksheet value) | 700 | 2,200 |
The sources disagree because they describe different (and often older) fridges and use different safety margins. All are approximate. Use your own label if you have it.
Running vs. starting vs. average watts
- Running watts: what the fridge draws while the compressor is on.
- Starting watts: a brief surge when the compressor kicks on. This is the number that decides whether a small generator or power station trips.
- Average watts: total energy over a day ÷ 24 hours. This is what matters for battery runtime.
Find your fridge’s average watts from the label
The yellow EnergyGuide label lists estimated yearly energy use in kWh. Then: average watts = kWh per year ÷ 8,760 × 1,000. Example: a label that says 600 kWh/year works out to about 600 ÷ 8,760 × 1,000 ≈ 69 W average (same method explained at usablekwh.com).
How long will a power station run a fridge? (worked example)
Hypothetical 1,000 Wh power station, the 69 W average from above, and the 85% efficiency assumption used on this site: 1,000 × 0.85 ÷ 69 ≈ 12 hours. If you instead assume the compressor draws 200 W continuously, the same station gives 1,000 × 0.85 ÷ 200 ≈ 4.3 hours — the real answer lands between the two. Try your own numbers in the power station runtime calculator.
Sizing a generator for a fridge
Use the starting-watts figure for your fridge from the table above (1,200–2,200 W in these sources), add other loads you’ll run together, and size to the totals in the generator size calculator.
Food safety in an outage
Per FoodSafety.gov (USDA): a refrigerator keeps food safe for up to 4 hours without power if the door stays closed; a full freezer holds for about 48 hours (24 hours if half full). Never taste food to decide whether it is safe.