Model
Maytag MHW6630M**
Rank #96 means 95 of the 388 washing machine models we track cost less to run each year; the 82nd efficiency percentile means it uses less energy for its size than 82% of those models.
What does the Maytag MHW6630M** cost to run per year?
Do the math and the Maytag MHW6630M**'s $18/yr puts it at rank #96 of 388, on the cheaper side of the class. Normalized for capacity, it ranks ahead of 82% of washing machine models we track on efficiency, a genuinely strong showing. The IMEF figure of 2.92 on this model captures integrated modified energy factor, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Lg WM6998H*A at $18/yr runs a little cheaper and the Samsung WF50A86**A* at $18/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A washing machine typically stays in service for somewhere around 10 years; over that span, the Maytag MHW6630M**'s $18/yr adds up to roughly $180 in electricity alone, before purchase price or repairs.
By the numbers
The Maytag MHW6630M** 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 $18/yr, here is what the Maytag MHW6630M** adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Maytag MHW6630M** costs about $180. That is roughly $20 less than the class median, which would run closer to $200 over the same ten years.
How the Maytag MHW6630M** compares
The washing machine class we track runs from $7 to $58 a year. At $18/yr, it runs about $2 a year cheaper than the class median of $20, and it is about $11 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 4.8 cu ft, the Maytag MHW6630M** is a mid-size washing machine for its class, which spans 1.9 to 6 cu ft with a median of 4.5 cu ft, neither the size advantage of a small unit nor the size penalty of a large one applies here, so its running cost is a fairer test of efficiency alone. The IMEF of 2.92 on this model, above the class median of 2.76, measures integrated modified energy factor; it is the number to compare directly against another model's IMEF if capacity is similar.
- Spin and wash efficiency (IMEF). A higher Integrated Modified Energy Factor means the machine wrings more useful washing (and a drier spin) out of every kilowatt-hour and gallon it uses.
- Drum volume. Drum volume sets the ceiling on how much a single cycle can wash, and it is usually the first driver of a washer's per-cycle energy use.
- Water heating. Cycle temperature, more than drum size, is usually what separates a cheap wash cycle from an expensive one on models with an internal water heater.
Common questions
Is the Maytag MHW6630M** cheap to run?
Yes, relatively. At $18 a year it ranks #96 of 388 washing machine models we track, in the cheaper part of its class to run.
How much does the Maytag MHW6630M** cost per month?
Roughly $1.53/mo, spreading the $18/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 99 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $18 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Maytag MHW6630M** for its size?
82nd percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 95 | Lg WM6998H*A5 cu ft | $18 |
| 94 | Lg WM5800H*A5 cu ft | $18 |
| 93 | Lg WKHC252H*A5 cu ft | $18 |
| 92 | Lg WKGX301H*A5 cu ft | $18 |
| 91 | Lg WKEX300H*A5 cu ft | $18 |
Source
ES_22856_MHW6630M**_062320221618590_4508742View certified washing machine listingsENERGY STAR data as of July 2026Maytag and MHW6630M** 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.