Model
Conserv FR300SG
Rank #84 means 83 of the 622 freezer models we track cost less to run each year; the 11th efficiency percentile means it uses less energy for its size than 11% of those models.
What does the Conserv FR300SG cost to run per year?
The Conserv FR300SG costs about $45 a year to run and sits near the top of the cheapest-to-run leaderboard, rank #84 of 622. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $50/yr to run, a saving of roughly $5 a year. Once capacity is factored in, its efficiency percentile of 11 is among the lowest in its class. At 3.1 cu ft, it is a small freezer for the class, which runs 1.1 to 23 cu ft; size and efficiency are the two levers behind the figure above, and this dataset does not carry a separate efficiency-factor column for this class.
Immediately around it on the leaderboard, the Conserv FR300BG at $45/yr runs a little cheaper and the Conserv FR300WG at $45/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 Conserv FR300SG's $45/yr adds up to roughly $630 in electricity alone, before purchase price or repairs.
Also sold as: Conserv FR300BG.
By the numbers
The Conserv FR300SG 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 $45/yr, here is what the Conserv FR300SG adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Conserv FR300SG costs about $450. That is roughly $50 less than a standard model in its class, which would run closer to $500 over the same ten years.
How the Conserv FR300SG compares
The freezer class we track runs from $25 to $120 a year. At $45/yr, it runs about $30 a year cheaper than the class median of $75, and it is about $20 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $50/yr, the Conserv FR300SG uses 10% less energy.
What drives its running cost
At 3.1 cu ft, the Conserv FR300SG is a small freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is.
- Interior volume. Cubic feet of frozen storage is the first lever behind a freezer's running cost, ahead of insulation or defrost type.
- Insulation and defrost type. Two freezers of the same size can differ meaningfully on running cost based on insulation quality and whether they run an automatic-defrost heater.
- Chest vs upright design. Chest freezers open from the top, so cold air, which sinks, stays inside when the lid opens; upright freezers lose more cold air per door opening for a similar capacity.
Common questions
Is the Conserv FR300SG cheap to run?
Yes, relatively. At $45 a year it ranks #84 of 622 freezer models we track, in the cheaper part of its class to run.
How much does the Conserv FR300SG cost per month?
Roughly $3.77/mo, spreading the $45/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 244 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $45 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Conserv FR300SG for its size?
11th 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 |
|---|---|---|
| 84 | Conserv FR300BG3.1 cu ft | $45 |
| 83 | Midea WHS-109FW13 cu ft | $45 |
| 82 | Midea MRU03M2A**3 cu ft | $45 |
| 81 | Midea MERU03M2A**3 cu ft | $45 |
| 80 | Master Chef 043-2352-83 cu ft | $45 |
Source
ES_1145610_FR300SG_01152025143245_80228504View certified freezer listingsENERGY STAR data as of July 2026Conserv and FR300SG 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.