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Insignia NS-MW09SS8 Microwave Review

Tested using Methodology v1.0
Reviewed Jul 10, 2024 at 10:13 am

The Insignia NS-MW09SS8 is a small, budget-friendly countertop microwave. While it lacks some bells and whistles you find on more expensive microwaves, like a steam sensor, it has the functions you'd expect on a microwave, like a defrost mode, and you can also mute the controls, which isn't always a given.

Our Verdict

7.3 Power

The Insignia NS-MW09SS8 is a 900-watt microwave and isn't the fastest. Most 1000-watt microwaves can heat your food a bit faster.

  • Has a mute function.
  • Compact design.
  • Somewhat slow.
  • No steam sensor.

Performance Usages

  • 7.3 Power
  1. Updated Jul 10, 2024: Review published.

Differences Between Sizes And Variants

This microwave comes in Black (NS-MW09BK0) or Stainless Steel (NS-MW09SS8). We tested it in 'Stainless Steel,' and you can see the labels for the unit we tested here and here.

If you come across another variant, let us know in the comments, and we'll update our review.

Compared To Other Microwaves

The Insignia NS-MW09SS8 is a small countertop microwave. It's a budget-friendly option that has a mute function, which gives it an edge over some other small microwaves, like the Cuisinart CMW-70 and the LG LMC0975ST. However, it doesn't have a steam sensor, which would allow the microwave to automatically calculate the cook time. If you want a small microwave with that feature, the Toshiba EM131A5C-BS is a bit bigger but comes equipped with a steam sensor.

If you're looking for a recommendation, check out the best microwaves and the best over-the-range microwaves.

Test Results

perceptual testing image
Height 11.5" (29.1 cm)
Width 19.3" (49.0 cm)
Depth Without Handle
14.7" (37.3 cm)
Depth With Handle
Power Cord Length 3.50 ft (1.07 m)
Cooking Chamber
Advertised Chamber Volume
0.9 cu. ft.
Turntable Diameter
10.6" (26.9 cm)
Chamber Height
8.4" (21.4 cm)
Chamber Width
12.6" (32.0 cm)
Chamber Depth
13.6" (34.6 cm)
Measured Chamber Volume
0.8 cu. ft. (0.02 m³)

It has a small cooking chamber, so it's best suited for smaller containers like mugs and bowls. The light inside isn't very bright, so it can be difficult to see into.

Controls And Functions
Door Release
Cooking Sensor
Popcorn Button
Defrost Button
Add Time Button
Kitchen Timer
Mute Sounds Button
Lock Controls Button

The microwave has simple controls. It's easy to start a 30-second cycle with one button push, and it has a defrost function as well as programs for specific foods like 'Pizza,' 'Popcorn,' and 'Beverage.' It doesn't have a steam sensor, so you always have to manually select the cooking time or input the weight of your food. However, it has a mute function, so you can switch off the end-of-cycle buzzer.

In The Box

  • Turntable
  • Turntable roller
  • User manual

Inverter Technology
Advertised Microwave Output Power
900 W
Tested Heating Rate At 100% Power
626 W
Shallow Dish Heating Uniformity
Area Of Underheated Dinner Plate
Grayscale Range Dinner Plate
Area Of Underheated Turntable
Grayscale Range Turntable

Microwaves all perform similarly when it comes to evenly heating food in shallow dishes. Evenness depends on factors like what kind of food you're heating, in what amount, and what container you're using. If you're interested in reading more about microwave performance, check out our investigation here.

Deep Dish Heating Uniformity
Min. Food Temperature (100% Power)
90 °F (32 °C)
Food Temperature Range (100% Power)
101 °F (56 °C)
Min. Food Temperature (50% Power)
83 °F (28 °C)
Food Temperature Range (50% Power)
106 °F (59 °C)

Like with shallow dishes, all microwaves heat food in deep dishes similarly evenly. Evenness depends on what food you're heating, how much of it there is, and in what container, instead of which microwave you're using. Check out our investigation into microwave performance here.