Our take
Panasonic NN-SU66LS is a stainless 1.3-cu.-ft. household countertop microwave with Genius Sensor and 1,100-W output. Its manual lists 120 V/60 Hz and 1,500-W/13-A input, while exterior dimensions conflict across Panasonic sources; tray diameter, trim fit and a current exact Amazon offer remain unverified.
Consider NN-SU66LS if a 1.3-cu.-ft. stainless household microwave with verified sensor cooking and 1,100-W output matches your use. Plan around the exact unit and manual because Panasonic's current page and older manual disagree on outside dimensions. Confirm tray size, ventilation clearance, electrical supply and the NN-SU66LS label on any listing before buying..
If a fixed counter opening, tray diameter or built-in frame is essential, compare a model whose exact current manual resolves those measurements. For professional duty, use equipment Panasonic explicitly classifies for that setting; NN-SU66LS is documented for household use.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Panasonic's exact page documents a 1.3-cu.-ft. stainless countertop microwave with 1,100-W output and Genius Sensor.
- The exact-family manual separates 1,100-W output from 1,500-W/13-A input and specifies 120 V/60 Hz.
- Ten power levels, seven automatic settings, defrost and popcorn choices are listed.
What to weigh up
- The current page and 2020 manual conflict on exterior dimensions, so close-fit planning needs confirmation.
- Numeric tray diameter and an exact trim-kit pairing remain unknown.
- The exact-family manual says household use only; the historical Amazon ASIN did not verify a current offer.
The key details
| Model covered | NN-SU66LS |
|---|---|
| Capacity | 1.3 cu. ft. capacity; Panasonic lists seven automatic cook settings and ten power levels |
| Microwave output | 1,100-W cooking output; the manual separately lists 1,500-W/13-A consumption |
| Cooking approach | Genius Sensor adjusts time and power; automatic defrost and three popcorn power choices are listed |
| Installation options | Countertop household model with 120 V/60 Hz supply; no exact trim-kit pairing was established |
| Finish and turntable | Current page and 2020 manual disagree on exterior dimensions; tray diameter is not stated |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Let the sensor define the convenience case
Panasonic says the Genius Sensor adjusts power and time, and its product page lists seven automatic cook settings, sensor cook and sensor reheat. That gives NN-SU66LS a different everyday role from a basic keypad model that depends on manual timing. It can narrow the number of choices for preset cooking, but the page does not promise a result for every food or portion. Use the manual for the intended presets, and retain manual power and time when a preset does not fit.
Treat capacity and counter footprint as separate questions
The 1.3-cu.-ft. capacity is consistent across Panasonic's product page and dimension comparison. Outside dimensions are less settled: the current product page lists 20 7/16 by 12 3/8 by 16 1/8 inches, while the 2020 family manual gives a different exterior footprint. For a roomy counter, the volume may be the main screen; for a tight shelf, verify the physical NN-SU66LS and its current installation clearances rather than relying on a single dimension set. The sources reviewed do not give a numeric glass-tray diameter.
Compare cooking output with the electrical draw
The owner manual identifies 1,100 W as cooking power and separately lists 1,500 W and 13 A of power consumption at 120 V/60 Hz. Use the first figure when comparing microwave output. The larger input figure describes the electrical demand and is not a stronger cooking rating. This distinction helps a buyer check both a desired output range and the home's supply without treating two different measurements as interchangeable.
Use the presets as a feature list, not a promise
Panasonic lists ten power levels, seven auto-cook settings, automatic defrost and popcorn choices for three bag sizes. The manufacturer describes fifteen sensor settings and says the Genius Sensor adjusts cooking time and power. These features give an owner several ways to start without calculating a manual setting, while the documented controls still allow ordinary time and power choices. They do not establish that every dish will fit or heat evenly; check cookware size and follow the specific program instructions.
Keep the model-specific installation route unresolved
Panasonic classifies NN-SU66LS as a countertop microwave, but the exact sources reviewed do not identify a compatible trim kit. Countertop placement should not be converted into an assumed cabinet installation. Preserve the model code when looking for accessories, use the manual's ventilation requirements and do not transfer a frame from a different Panasonic model. Turntable diameter is also not supplied in the reviewed exact-model material, so plate clearance needs an in-person check.
Keep household use and listing identity in view
The owner manual is labeled household use only, which separates this model from the professional Panasonic NE-1025F in this roster. The frozen Amazon ASIN returned an error and does not confirm a current listing or finish on a present offer. Search by NN-SU66LS, then compare the model label, stainless finish, condition and seller details with Panasonic's exact page. The tagged search destination is a route to investigate, not proof that a matching item is available.
What else to compare
Before you buy
What capacity does NN-SU66LS have?
Panasonic's exact page and dimension comparison identify a 1.3-cu.-ft. cavity.
What is its cooking output?
The owner manual lists 1,100 W cooking power, separate from 1,500 W/13 A input.
Does this model have sensor cooking?
Yes. Panasonic documents Genius Sensor cooking and reheating for NN-SU66LS.
What electrical supply does the manual specify?
The exact-family manual specifies 120 V/60 Hz and 1,500 W/13 A consumption.
Which exterior dimensions should I use?
The current page and 2020 family manual disagree, so verify the actual oven and clearances.
Is an exact trim kit or tray diameter documented?
The reviewed sources do not provide an NN-SU66LS trim pairing or numeric tray diameter.
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.
- Panasonic NN-SU66LS exact-model product page ↗ — checked October 5, 2026.
- Panasonic's current exact-model page lists NN-SU66LS, stainless finish, 1.3-cu.-ft. capacity, 1,100-W cooking power, ten levels, Genius Sensor, seven auto-cook settings, defrost and current-page dimensions. ↗ — checked October 5, 2026.
- The exact-family owner manual identifies NN-SU66LS as household use only and lists 120 V/60 Hz, 1,500-W/13-A consumption and 1,100-W cooking power; its exterior dimensions differ from Panasonic's current product page. ↗ — checked October 5, 2026.
- Panasonic's dimension comparison independently lists NN-SU66LS at 1.3 cu. ft. ↗ — checked October 5, 2026.
- Historical exact-ASIN request returned an internal server error; current offer identity is unverified. ↗Paid link · We may earn a commission. — checked October 5, 2026.
The decision
Panasonic NN-SU66LS is a stainless 1.3-cu.-ft. household countertop microwave with Genius Sensor and 1,100-W output. Its manual lists 120 V/60 Hz and 1,500-W/13-A input, while exterior dimensions conflict across Panasonic sources; tray diameter, trim fit and a current exact Amazon offer remain unverified.
Is it the right fit?
Check the exact model and today’s offers on Amazon.