How Much Does It Cost to Run a Chest or Upright Freezer?
Every freezer sold in the U.S. since 2014 must stay under a federal energy limit based on its type and adjusted volume. Those limits make a better yardstick than guessed wattages, and they show the real differences between freezer types. At 18¢/kWh, new models at the limit cost:
| Type and size | kWh per year | Cost per year | ENERGY STAR |
|---|---|---|---|
| Chest, 7 cu ft | ~196 | ~$35 | ~$32 |
| Chest, 15 cu ft | ~297 | ~$53 | ~$48 |
| Chest, 22 cu ft | ~385 | ~$69 | ~$62 |
| Upright, manual defrost, 15 cu ft | ~338 | ~$61 | ~$55 |
| Upright, frost-free, 15 cu ft | ~452 | ~$81 | ~$73 |
| Upright, frost-free, 20 cu ft | ~527 | ~$95 | ~$85 |
ENERGY STAR's own averages line up: about 215 kWh a year for a certified chest freezer and about 395 kWh for a certified upright.
Chest vs Upright: Frost-Free Is the Expensive Part
At the same 15 cubic feet, a frost-free upright is allowed to use about 50% more electricity than a chest freezer, while a manual-defrost upright is only about 14% more. Most of the gap isn't the door — it's the automatic defrost, which periodically heats the coils to melt frost and then has to remove that heat again. A chest freezer also keeps its cold air when you open the lid, because cold air is denser and stays put, while an upright's spills out the front.
So if convenience points you to an upright, a manual-defrost model gets you most of the way to chest-freezer running costs. Frost-free is worth it only if defrosting by hand a couple of times a year is a dealbreaker.
Does a Full Freezer Use Less Electricity?
Less than the common advice suggests. In steady running, a freezer's energy use is set by how much heat leaks through its walls and seal, and that depends on the temperature difference with the room — not on what's inside. A full freezer does lose less cold air when you open it, so it helps a little if it's opened often.
Where fullness really matters is a power outage. USDA guidance is that a full freezer holds a safe temperature for about 48 hours, and a half-full one for about 24 hours, if the door stays closed. Frozen water bottles filling the empty space are cheap insurance. Our power outage calculator covers how fast the rest of the house cools.
Is Your Old Freezer Worth Replacing?
ENERGY STAR estimates that replacing an old freezer with a certified model saves about $300 over a new freezer's 12-year life — but old freezers vary widely, and a gasket that no longer seals can matter more than the freezer's age. A $20–30 plug-in power meter left on for two or three days tells you what yours actually uses. Enter it above with the price of a replacement:
- Close to the new-model figure (for a 15 cu ft chest, under about 1 kWh a day): keep it. A new one won't pay back on electricity.
- Around double: a new freezer saves $50 or more a year — worth it if the old one needs work anyway.
- Several times the new figure, or the compressor seems to run constantly: check the seal and coils first, then replace.
Garage Freezers
ENERGY STAR advises keeping a freezer indoors, such as in a basement, unless you live in a mild climate — extreme temperatures are hard on the compressor and can shorten its life. In summer a hot garage makes the compressor run longer; in a cold one, some models aren't designed to run at all. If it has to go in the garage, check that the model is rated for it.
Tips to Lower Freezer Running Cost
- Keep it at 0°F — the standard safe temperature. Colder wastes energy with no benefit.
- Check the seal — close the lid or door on a sheet of paper. If it slides out easily, the gasket is leaking.
- Defrost manual models before frost passes about 1/4 inch — it insulates the coils and makes the compressor work harder.
- Give the coils room — leave a few inches behind and around the freezer, and vacuum the coils once a year.
- Unplug a second freezer you don't need — it costs the same to run nearly empty as full.