Our take
Emerson MW9255B is a black 0.9-cu.-ft. countertop microwave with 900-W output, six auto menus, defrost, memory and timer functions. Its power-level count conflicts across revisions; electrical supply, sensor, trim, tray diameter and commercial-duty status remain unknown.
Consider MW9255B if a black 0.9-cu.-ft. countertop unit with documented 900-W output and a combination of auto menus, defrost, memory and timer functions matches your routine. The number of power levels differs between Emerson's current page and its preliminary 2013 sheet, so do not use it as a precise criterion. Verify the nameplate and tray size, which the reviewed sources do not settle numerically..
For a threshold involving sensor cooking, tray diameter, trim fit, electrical supply or commercial duty, compare a model whose exact documentation settles that attribute. MW9255B's official page does establish its 0.9-cu.-ft. cavity, 900-W output and control features.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Emerson's exact product page identifies a black 0.9-cu.-ft. countertop model with 900-W output.
- The page lists six menus, time/weight defrost, express cooking, memory, timer, turntable and child lock.
- The review preserves the ten-versus-eleven power-level conflict instead of using it as a stable match fact.
What to weigh up
- The exact sources do not establish voltage, frequency, sensor cooking, tray diameter, trim fit or commercial-duty classification.
- The number of power levels conflicts between Emerson's current page and an older preliminary sheet.
- The historical Amazon page returned a cache miss and does not confirm a current exact offer.
The key details
| Model covered | MW9255B |
|---|---|
| Capacity | 0.9 cu. ft. of cooking space |
| Microwave output | 900-W microwave output on Emerson's exact product page |
| Cooking approach | Six auto menus, time/weight defrost, express cook, memory and timer |
| Installation options | Countertop model; no exact trim-kit pairing documented |
| Finish and turntable | Black front and cabinet with removable glass turntable; diameter unknown |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Use MW9255B as the identity boundary
Emerson's official product page names MW9255B and describes a black touch-control countertop microwave. The B suffix identifies this black code; keep it distinct from the white MW9255W and other Emerson variants rather than transferring their finish or details. The exact historical ASIN B017ZCQ5BI returned a cache miss, so it does not verify a current listing. Search by the full MW9255B code and check that code on any current offer before relying on the product information here.
Balance the 0.9-cu.-ft. cavity against cookware
Emerson lists 0.9 cu. ft. of cooking space. That provides a compact-to-mid-size comparison point, but it cannot tell you whether your regular dinner plate or a handled dish will rotate. The product page confirms a removable glass turntable but does not state its diameter in the reviewed text. Measure your dishes and tray rather than inferring fit from cavity volume or exterior dimensions. Buyers who routinely heat wide platters may prefer a larger model with an exact tray measurement.
Compare the stated 900-W output
Emerson's current exact-model page explicitly labels 900 W as microwave output. It is suitable to use in a published-output comparison, but it is not a cooking-time promise. The older preliminary specification sheet also repeats 900 W. Neither source in the reviewed product page set provides the exact line and frequency needed for the supply-compatibility gate, so don't infer a U.S. rating from the brand or sale channel. Check the appliance label and owner instructions before installation.
Treat the power-level count as unresolved
Emerson's current product page says ten power levels, while its preliminary 2013 sheet for MW9255B says eleven. That discrepancy may reflect a product revision or documentation change, but the sources do not explain which unit revision a present listing represents. For that reason the level count is described as a conflict, not asserted as a stable fact or used to score the model. The page does document six auto menus, time/weight defrost, express cooking, a memory function and a kitchen timer.
Sensor cooking and trim are not established
The official feature list names presets, time/weight defrost, express cooking, memory, a timer and a child lock, but it does not identify sensor cooking. Sensor status therefore stays unknown; it should not be inferred from a touch panel or auto menu. Likewise, Emerson calls MW9255B a countertop microwave and the sources reviewed do not establish an exact compatible trim kit. If automatic sensing or built-in cabinet installation is a must-have, select a model whose exact manual documents that feature and route.
Leave electrical and professional use to exact documentation
The reviewed exact-model page and preliminary sheet do not establish a 120-V/60-Hz rating, input current or circuit requirement. They also do not classify MW9255B for commercial foodservice use. Keep both attributes unknown rather than assuming that a U.S.-sold countertop appliance matches every branch circuit or a shared-use kitchen. A current exact owner's manual and nameplate should resolve supply details; professional-duty buyers need explicit manufacturer classification before including it as a qualifying unit.
What else to compare
Before you buy
What are the capacity and output?
Emerson lists 0.9 cu. ft. and labels the microwave output as 900 W.
What controls and cooking features are documented?
The page lists six auto menus, defrost, express cooking, memory, timer and child lock.
Is the power-level count ten or eleven?
Emerson's current page says ten; a preliminary 2013 sheet says eleven, so it remains unresolved.
Does MW9255B have a turntable?
Yes. Emerson lists a removable glass turntable, but the reviewed page gives no diameter.
Is the electrical supply confirmed?
The exact sources reviewed do not establish voltage and frequency; check the nameplate and manual.
Can it use sensor cooking or a trim kit?
Neither sensor operation nor exact trim-kit compatibility is confirmed in the reviewed sources.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Emerson MW9255B official product page ↗ — checked October 5, 2026.
- Emerson's exact MW9255B product page identifies countertop type, 0.9 cu. ft., 900-W output, black finish, ten levels, six menus, defrost, express cooking, memory/timer, removable glass turntable and child lock. ↗ — checked October 5, 2026.
- Preliminary 2013 MW9255B sheet lists eleven levels and repeats 900-W output and other features; its conflicting level count is not used as a stable match attribute. ↗ — checked October 5, 2026.
- Emerson's documents index contains exact-model owner-manual and specification-sheet entries; the reviewed page does not establish an electrical supply value. ↗ — checked October 5, 2026.
- Historical exact-ASIN request returned a cache miss; no current exact Amazon offer was confirmed. ↗Paid link · We may earn a commission. — checked October 5, 2026.
The decision
Emerson MW9255B is a black 0.9-cu.-ft. countertop microwave with 900-W output, six auto menus, defrost, memory and timer functions. Its power-level count conflicts across revisions; electrical supply, sensor, trim, tray diameter and commercial-duty status remain unknown.
Is it the right fit?
Check the exact model and today’s offers on Amazon.