Model
Koolatron KTUF34
Rank #29 means 28 of the 622 freezer models we track cost less to run each year; the 3rd efficiency percentile means it uses less energy for its size than 3% of those models.
What does the Koolatron KTUF34 cost to run per year?
Out of the 622 freezer models we track, the Koolatron KTUF34 lands at rank #29 on cost, roughly $40 a year, a standout figure at the cheap end of the class. It uses 11% less energy than the U.S. federal standard model in its class, which would cost about $45/yr to run, a saving of roughly $5 a year. Its size-adjusted efficiency percentile of 3 means its running cost, whatever it is, owes almost nothing to efficiency and almost everything to capacity. This class has no published efficiency-factor figure beyond annual kWh itself, so at 1.1 cu ft (the class spans 1.1 to 23), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Honeywell H11MFW at $40/yr runs a little cheaper and the Midea MRU01M3ABB at $40/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A freezer typically stays in service for somewhere around 14 years; over that span, the Koolatron KTUF34's $40/yr adds up to roughly $560 in electricity alone, before purchase price or repairs.
Also sold as: Arctic King AUFM011AEW.
By the numbers
The Koolatron KTUF34 normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $40/yr, here is what the Koolatron KTUF34 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Koolatron KTUF34 costs about $400. That is roughly $50 less than a standard model in its class, which would run closer to $450 over the same ten years.
How the Koolatron KTUF34 compares
The freezer class we track runs from $25 to $120 a year. At $40/yr, it runs about $35 a year cheaper than the class median of $75, and it is about $15 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $45/yr, the Koolatron KTUF34 uses 11% less energy.
What drives its running cost
At 1.1 cu ft, the Koolatron KTUF34 is a small freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture.
- Interior volume. As with refrigerators, more cubic feet of frozen storage generally means a bigger compressor and a higher annual energy figure.
- Insulation and defrost type. Better-insulated cabinets lose less cold to the surrounding room, and frost-free (automatic-defrost) freezers run a periodic heating element that a manual-defrost model does not.
- Chest vs upright design. Door orientation affects how much cold air escapes per opening: top-opening chest designs generally hold cold better than front-opening upright ones.
Common questions
Is the Koolatron KTUF34 cheap to run?
Yes. Its $40/yr running cost puts it at rank #29 of 622, below what most freezer models we track cost to run.
How much does the Koolatron KTUF34 cost per month?
About $3.33 a month, which is the $40 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 215 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $40 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Koolatron KTUF34 for its size?
3rd percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 32 | Honeywell H11MFW1.1 cu ft | $40 |
| 31 | Honeywell H11MFS1.1 cu ft | $40 |
| 30 | Honeywell H11MFB1.1 cu ft | $40 |
| 29 | Arctic King AUFM011AEW1.1 cu ft | $40 |
| 28 | Frigidaire EFRF1005-D-ID-6COM10.1 cu ft | $40 |
Source
ES_1137414_KTUF34_05112023164110_80168440View certified freezer listingsENERGY STAR data as of July 2026Koolatron and KTUF34 are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.