The Panasonic NN-SU66LS is a 1.3 cu ft, 1100-watt countertop microwave in stainless steel at $280, offering mid-range capacity and output in a well-regarded brand package. It earns a 4.2-star average from 467 buyers, which reflects consistent but not standout performance.
Households of 2-4 people who want a reliable everyday microwave with enough capacity for full-size plates and enough wattage for reasonably quick reheating. The stainless finish and keypad controls suit a kitchen with other stainless appliances.
Skip if
Buyers on a tighter budget can find comparable 1.2 cu ft capacity at 1000W for significantly less. Also skip if you need inverter technology for precise low-power cooking, this model does not list inverter heating.
Capacity 1.3 cu ft
Wattage 1100 W
Power levels 10
Installation Countertop
Width 21.22 in
Controls Keypad
Capacity of 1.3 cu ft - larger than 70% of the 84 models we track
Width of 21.22 in - wider than 71% of the 84 models we track
Weight of 35.3 lb - heavier than 65% of the 84 models we track
Our scorecard
4.2/5overall
Owner rating4.2/5
4.2 average across 467 owner ratings
Value for money2.4/5
$215 per cubic foot, above the category median
Popularity3.2/5
467 owner reviews, more than most models here
Storage space3.7/5
1.3 cu ft, roomy for this category
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other kitchen ranges, cooktops, wall ovens, range hoods and microwaves we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The NN-SU66LS measures 17.44 x 21.22 x 11.81 inches and weighs 35.3 lbs, placing it firmly in the mid-size countertop category. At 21.22 inches wide it fits comfortably on most standard countertops without crowding. The 1.3 cu ft interior handles full dinner plates and medium casserole dishes without trouble.
At 1100W, heating speed is solid for everyday tasks, reheating a plate of leftovers, cooking a frozen entree, or warming soup. Ten power levels give you enough range for most common cooking tasks, from full power down to a gentle warm or defrost setting. The keypad control interface is standard for Panasonic at this tier.
At $280, this unit sits in the middle of the market. Cheaper options with similar capacity exist, but Panasonic's build reputation and 467-review track record at 4.2 stars suggests durable, consistent operation for buyers who value brand reliability.
Pros
1.3 cu ft cavity fits full dinner plates and medium bowls comfortably
1100W delivers practical heating speed for everyday household use
10 power levels give solid cooking flexibility
Stainless steel finish at 21.22-inch width fits most kitchen setups
Panasonic brand is consistently rated for long-term durability
Cons
No inverter technology listed, standard power delivery may produce less even heating at low power levels
$280 is higher than competing 1.2-1.3 cu ft models from other brands
4.2 stars from 467 reviews is respectable but not a standout score
Specifications
Capacity
1.3 cu ft
Wattage
1100 W
Power levels
10
Installation
Countertop
Width
21.22 in
Controls
Keypad
Color
Stainless Steel
Dimensions
17.44 X 21.22 X 11.81 In
Weight
35.3 lb
Voltage
120 Volts
Performance notes
At 1100W and 1.3 cu ft, this is a capable everyday kitchen microwave. Typical reheating tasks at full power take around 2-3 minutes for a dinner plate of leftovers. The 10 power levels let you drop down for defrosting or gentle reheating of delicate items. Dimensions of 17.44 x 21.22 x 11.81 inches mean you need at least 22 inches of counter depth and clearance.
What buyers say
467 reviews at 4.2 stars indicates satisfied buyers with a pattern of steady, reliable performance. At $280, buyers appear to accept the Panasonic premium over cheaper alternatives without significant regret, suggesting the build quality and reliability justify the added cost for most purchasers.
Does the Panasonic NN-SU66LS have inverter technology?
The available specs do not list inverter technology for this model. Standard (non-inverter) microwaves cycle power on and off to achieve lower power levels, which can produce less even results on defrost or gentle-heat tasks compared to true inverter models.
What is the difference between keypad and button controls on a microwave?
Keypad controls typically mean a membrane-style number pad where you enter cook time and power level directly. Button controls often include dedicated one-touch preset buttons. The NN-SU66LS uses a keypad layout, which is straightforward for time-based cooking but requires manual entry for each session.
Is 1.3 cu ft the right size for a family of four?
A 1.3 cu ft cavity is generally adequate for a family of four for reheating and defrosting tasks. It handles full dinner plates and medium casseroles. For regularly heating multiple dishes simultaneously or very large pots and pans, a 1.6-2.2 cu ft model gives more room.
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