ZLine MWO-OTR-H-30

This standard 30" wide ZLine 1.5 cubic-foot 900-watt microwave oven has the following:

a sensor
auto-defrost
speed-cook
convection
touchpad controls
a wire rack for bi-level cooking

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CR 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 Over-the-Range Microwave Ovens

What goes into the Overall Score?

OWNER SURVEYS

Learn More

Heating evenness

/ 5

Defrosting evenness

/ 5

Speed of heating

/ 5

Ease of use

/ 5

Microwaving noise

/ 5

Vent noise

/ 5

Venting (air flow)

/ 5

Claimed capacity (cu. ft.)

/ 5

Usable capacity (cu. ft.)

/ 5

Detailed Test Results

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

About

The ZLine MWO-OTR-H-30 is part of the Microwave Ovens test program at Consumer Reports. In our lab tests, Over-the-Range Microwave Ovens models like the MWO-OTR-H-30 are rated on multiple criteria, such as those listed below.

Heating evenness: A high score means the microwave heats food evenly without hot or cold spots. A top-scoring model warms center and edges alike, helping heat foods like leftovers evenly.

Defrosting evenness: A high score means the microwave's automatic-defrost program thaws food evenly without partially cooking or leaving icy spots (we test using frozen ground beef). A top-scoring model thaws meat uniformly and nearly completely, with some models fully defrosting the food.

Speed of heating: A high score means the microwave heats quickly. A top-scoring model shortens cooking and reheating time.

Brand Reliability & Satisfaction

This brand has insufficient data to rank.

Did the brand perform consistently well over time?

PREDICTED RELIABILITY SCORE

/ 100

Insufficient survey data to receive a brand-level rating. Brand gets a weighted category average for this attribute.

Would our members recommend this brand?

OWNER SATISFACTION SCORE

/ 100

Insufficient survey data to receive a brand-level rating. Brand gets a weighted category average for this attribute.

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

Features & Specs

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

900

Detailed prompts

Yes

Type

Control type

Touchpad

Door-Open Method

Handle

Turntable size (in.)

13.5

Power level display/recall

Yes

Price & Shop

ZLine MWO-OTR-H-30

CR Expert Take

Overall Score

What goes into the Overall Score?

Detailed Test Results

About

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