Panasonic Inverter NN-CD989[S]

Countertop Microwave Ovens / Large Countertop Microwaves

This Panasonic 1.5 cubic-foot 1100-watt has

a sensor
speed-cook
convection
combo controls.
a wire rack for bi-level cooking.

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CR's Expert Take

How did it perform in our owner surveys and expert lab testing?

Overall Score

The Overall Score for this model incorporates our expert lab test results, as well as ratings for that brand’s reliability and owner satisfaction from our annual product owner survey of members.

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Current Range of Tested Countertop Microwave Ovens

What goes into the Overall Score?

OWNER SURVEYS

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Heating evenness

/ 5

Defrosting evenness

/ 5

Speed of heating

/ 5

Microwaving noise

/ 5

Ease of use

/ 5

Color

/ 5

Claimed capacity (cu. ft.)

/ 5

Usable capacity (cu. ft.)

/ 5

Detailed Test Results

Heating Evenness: This model performed good in our heat evenness test consisting of reheating a bowl of mashed potatoes.
Auto Defrost: This model performed excellent in our defrosting test consisting of thawing a pound of frozen ground beef.

About

The Panasonic Inverter NN-CD989[S] is part of the Microwave Ovens test program at Consumer Reports. In our lab tests, Countertop Microwave Oven models like the Inverter NN-CD989[S] are rated on multiple criteria, such as those listed below.

Heating evenness: This reflects how evenly a model reheated a dish of cold mashed potatoes.

Defrosting evenness: This is based on how well the automatic-defrost program defrosted one pound of frozen ground chuck.

Speed of heating: This score is based on the temperature rise of water heated in the microwave.

Brand Reliability & Satisfaction

#? in Reliability of all Countertop Microwave Oven Brands

Did the brand perform consistently well over time?

PREDICTED RELIABILITY SCORE

/ 100

Predicted brand reliability ratings are based on estimated problem rates for newly purchased countertop microwaves, not covered by an extended warranty or service contract, by the end of the 5th year of ownership. Ranked #? of 38

Would our members recommend this brand?

OWNER SATISFACTION SCORE

/ 100

Brand owner satisfaction ratings are based on the proportion of members who are extremely likely to recommend their microwave oven to their friends and family. Ranked #? of 38

Source: Consumer Reports' 2023, 2024, and 2025 Spring Surveys

Features & Specs

Style

Countertop Microwave Ovens

Exterior Dimensions

15 in. high , 24 in. wide

19 in. deep

Features

Convection mode

Yes

Sensor

Yes

Stainless/SS-look option

Yes

Speed-cook mode

Yes

Grill

Racks for bi-level cooking

Yes

Air Fry Setting

Specs

Watts

1100

Detailed prompts

Yes

Type

Large countertop microwave

Door-Open Method

Button

Touchpad/Dial

Combo

Control type

Power level display/recall

Yes

Turntable size (in.)

Turntable diameter (in.)

15.0

Exterior height (in.)

Exterior width (in.)

Exterior depth (in.)

Price & Shop