How Much Does It Cost to Run a Refrigerator Per Month? (By Model Size)
Short answer: at the 2024 US average electricity rate of $0.16/kWh, a typical modern Energy Star top-freezer refrigerator costs about $5.07–$6.13 per month to run. A mini fridge runs roughly $2.67–$4.27, a large French-door or side-by-side runs $8.00–$12.67, and a pre-2010 unit can easily top $14.67 per month all by itself.
Want to plug in your own fridge wattage and rate? Use the appliance cost calculator on the homepage. For the full reference (annual cost, cycling math, state-by-state rates), see the cost to run a refrigerator guide.
The formula in one line
Monthly cost = (annual kWh ÷ 12) × $/kWh
Annual kWh comes from the yellow EnergyGuide sticker on the side of every new fridge — and from manufacturer spec sheets for older models. That number already accounts for the compressor cycling on and off, so it is the honest figure to use. Forget the nameplate wattage on the back: a fridge labeled “600W” only draws that much when the compressor is actually running, which is roughly 30-40% of the time.
Monthly cost by refrigerator model size
All figures use the US average rate of $0.16/kWh. Annual kWh ranges are from federal EnergyGuide testing standards and DOE rule-making data for the size class.
| Model size | Capacity | Annual kWh | Avg watts | Cost / month |
|---|---|---|---|---|
| Mini fridge | 1.7 – 4.5 cu ft (dorm / bar) | 200–320 | 23–37W | $2.67–$4.27 |
| Compact fridge | 4.5 – 7 cu ft | 250–380 | 29–43W | $3.33–$5.07 |
| Standard top-freezer (Energy Star) | 18 – 21 cu ft | 380–460 | 43–53W | $5.07–$6.13 |
| Standard top-freezer (non-Energy Star) | 18 – 21 cu ft | 460–580 | 53–66W | $6.13–$7.73 |
| Bottom-freezer | 20 – 24 cu ft | 500–650 | 57–74W | $6.67–$8.67 |
| Side-by-side | 22 – 28 cu ft | 600–800 | 68–91W | $8.00–$10.67 |
| French door (Energy Star) | 22 – 28 cu ft | 580–750 | 66–86W | $7.73–$10.00 |
| French door (non-Energy Star, 28+ cu ft) | 28 – 36 cu ft | 750–950 | 86–108W | $10.00–$12.67 |
| Pre-2010 full-size | any size | 900–1400 | 103–160W | $12.00–$18.67 |
Mini fridge: $2.67–$4.27/month
Dorm-size and bar-size fridges (1.7–4.5 cu ft) typically draw an average of 23–37 watts continuously after cycling, or 200–320 kWh per year. At $0.16/kWh that lands at roughly $2.67–$4.27 a month.
People assume mini fridges are dramatically cheaper than a full-size unit. They are — but only because they hold a fifth of the food. Per cubic foot of cold storage, a mini fridge is actually one of the worst performers. If you are running one in a garage or office because the kitchen fridge is full, consider whether reorganizing the main fridge would let you unplug the mini and save $3.47/month.
Standard top-freezer: $5.07–$7.73/month
An 18–21 cu ft top-freezer is the cheapest full-size format to own. Energy Star models use 380–460 kWh per year; non-Energy Star models in the same form factor use 460–580 kWh. Translated to monthly cost at the US average rate that is $5.07–$7.73, with the Energy Star premium paying back roughly $16 per year.
Bottom-freezer designs are similar but a little hungrier (500–650 kWh/yr) because they need a slightly larger compressor to move cold air into the upper compartment. Both designs benefit from the fact that the fridge door opens to a tall, narrow opening — much less cold air spills out per opening than with a side-by-side.
French door & side-by-side: $7.73–$12.67/month
Large French-door fridges (22–28 cu ft) average 66–86 watts of continuous draw and run roughly $7.73–$10.00 per month at the US average rate. The very large 28+ cu ft units with through-the-door water and ice push that into the $10.00–$12.67 range.
Side-by-side fridges in the same volume class typically use 5–10% more electricity than French-door. The difference comes from door geometry: a French door has two short fridge doors that only open part of the cold compartment at a time, while a side-by-side has a single tall fridge door that dumps a large cold-air column out every time you open it.
If your in-door ice maker is on the “door ajar” or “door alarm” list of issues, fixing it matters: a leaky ice/water dispenser is one of the most common reasons a French-door fridge ends up costing $20+/month more than its EnergyGuide rating.
Pre-2010 fridge: $12.00–$18.67/month
Federal fridge-efficiency standards tightened in 2001 and again in 2014. A typical 1990s full-size fridge used 1,200–1,500 kWh per year. At the US average rate that is $16.00–$20.00 per month — roughly 3× what a modern Energy Star top-freezer costs. If your fridge predates 2010 and you live in a state with above-average rates (CA, NY, MA, HI), the math on replacement is usually obvious: the new fridge pays for itself in 6–10 years on electricity savings alone.
Levers that change your number
Your electricity rate
Hawaii ($0.40/kWh) and CA ($0.30/kWh) residents pay almost double the US average. A 600 kWh/yr French door costs $8.00/month at $0.16/kWh but $20.00/month at $0.40/kWh. See your state on the electricity rates page.
Temperature setpoint
The FDA recommends 40°F or below. The sweet spot for energy is 37°F. Going from 33°F to 37°F can cut compressor runtime 10-25% — roughly $1–$2/month off a typical full-size fridge.
Coil cleanliness
Dusty condenser coils on the back or underneath insulate them, forcing the compressor to run longer. A 2-minute vacuum every six months saves 5–15%.
Door-seal condition
Close a dollar bill in the door — if you can pull it out without resistance, the gasket is worn and cold air is leaking out 24/7. A $15 replacement gasket can cut runtime 5-20%.
Worked example: a 25 cu ft French door at $0.20/kWh
EnergyGuide sticker: 680 kWh/year.
Daily kWh: 680 ÷ 365 = 1.86 kWh.
Monthly cost: 680 × $0.20 ÷ 12 = $11.33.
Annual cost: 680 × $0.20 = $136.
Calculate yours in 10 seconds
Plug in your fridge's wattage and your local rate to see daily, monthly, and yearly cost.
Open the appliance cost calculatorRelated
Frequently Asked Questions
How much does it cost to run a refrigerator per month?
At the 2024 US average rate of $0.16/kWh, a typical full-size refrigerator uses 400–700 kWh per year. That works out to about $5.33/month for a modern Energy Star top-freezer and up to $9.33/month for a large French-door or side-by-side. Mini fridges run about $3.33/month. Older pre-2010 units often exceed $14.67/month all by themselves.
Do mini fridges cost less per month than full-size fridges?
Yes, but less than people expect. A mini fridge uses 200–320 kWh/yr (about $3.47/month). A modern Energy Star top-freezer holding 5-6× as much food uses around 400 kWh/yr ($5.33/month). Per cubic foot of cold storage, the full-size fridge is far cheaper — minis are only cheap in absolute terms because they are tiny.
Why do French-door fridges cost more to run than top-freezers?
Three reasons. They are typically 25-28 cu ft instead of 18-21 cu ft. They almost always include a through-the-door ice and water dispenser, which adds 50-100 kWh/yr on its own. And they have more total door-seal perimeter, so warm air gets in more easily when the doors are opened.
Where do I find my fridge's actual monthly cost?
Look at the yellow EnergyGuide sticker that ships on every new fridge. The big number is "Estimated Yearly Energy Use" in kWh. Divide it by 12 and multiply by your $/kWh rate from your electricity bill. If the sticker is gone, search the model number plus "energy guide PDF" — the EPA database keeps records back to the late 2000s.
Does running my fridge half-empty cost more?
Slightly. A full fridge holds cold better because food acts as thermal mass — opening the door dumps less cold air out of a packed fridge than out of an empty one. But the effect is small: maybe 3-7% on annual energy use. Bigger levers are temperature setpoint (37°F vs 33°F) and condenser coil cleanliness.
Should I replace an old fridge just to save on the monthly cost?
If it predates 2010, almost certainly yes. A 1995-2005 fridge typically uses 1,000-1,400 kWh/yr vs ~400 kWh/yr for a new Energy Star model. That is $112/year saved at the US average rate — about $9.33/month. Over a 15-year life that often covers the entire replacement cost. Many utilities also pay $50-$100 to haul away the old one.
Cost figures use the US average residential rate of $0.16/kWh and a 30-day month. Annual kWh ranges reflect federal EnergyGuide testing for each size class.