Selecting the best 30 inch built in microwave is a pivotal decision for any modern kitchen design. Unlike a simple countertop appliance, a built-in unit is an integrated part of your cabinetry, demanding a perfect blend of form and function.
This choice impacts not only your daily cooking convenience but also the overall aesthetic and workflow of your culinary space. A poor decision can lead to years of frustration, while the right one enhances both efficiency and style.
Navigating the market requires a focus on long-term quality, innovative features, and true value. This guide is designed to cut through the noise, helping you confidently identify the best 30 inch built in microwave to complete your ideal kitchen.
IN THIS ARTICLE
Top 10 Best 30 Inch Built In Microwave Compared

🏆 BEST OVERALL Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft. Built-in Microwave Oven
- Large 2.2 cu. ft. capacity accommodates family-sized dishes.
- Sensor cooking feature automates time and power for better results.
- Sleek built-in design provides a high-end, integrated look.
- Spacious interior allows for cooking multiple items at once.

🥈 2ND RUNNER UP COSMO COS-MWD3012NHSS 30 in. Microwave Drawer
- 1000 watts provides ample power for quick cooking.
- Versatile defrosting with both weight and time options.
- Includes a defrosting rack for more even results.
- Simple and convenient one-touch presets for common foods.

� BEST VALUE KoolMore KM-CWO30-SS Built-in Microwave with Convection Oven and Air Fryer
- Combines microwave, convection, and air fryer functions, saving counter space.
- Generous 1.6 cubic feet capacity is suitable for various dish sizes.
- Sleek built-in design provides a modern, integrated look.
- User-friendly controls make operation straightforward.

Frigidaire PMBS3080BF 2.2 cu. ft. Built-In Microwave Oven with Sensor Cook
- Designed for a clean, built-in look with a matching trim kit.
- Clear and specific cutout dimensions are provided for installation planning.
- Standard size is suitable for many common cabinet configurations.
- Performs essential microwave functions reliably.

Zephyr 30 inch Built In Drawer Microwave Oven Unde
- Seamless built-in design saves counter space.
- Large interior capacity accommodates a 9x13 dish.
- Sensor cooking and reheating provides consistent results.
- Convenient touch-to-open and close drawer mechanism.

MilleLoom 30' Microwave Convection Oven
- Versatile all-in-one functionality (microwave, convection, air fry, etc.).
- Spacious 1.6 Cu. Ft. interior accommodates large dishes.
- Space-saving built-in design frees up valuable counter space.
- Intuitive touch controls and presets are easy to use.

SHARP SMD3070ASY Microwave Drawer Oven
- Saves significant counter space with its under-cabinet installation.
- Automatic drawer provides easy, touch-activated access.
- Concealed, angled control panel offers a sleek look and is easy to read.
- Sufficient capacity for common dish sizes and tall beverages.

- Sleek under-counter design saves valuable countertop space.
- Convenient one-touch automatic drawer open and close.
- Angled control panel is easy to see and use.
- Fits standard 30-inch cabinet openings for streamlined installation.

COSMO COS-MWD3012NHBK 30 in. Built-in Microwave Drawer with Automatic Presets
- 1000 watts with 10 power levels for consistent and controlled cooking.
- Helpful presets for common, everyday tasks.
- Versatile defrost options (by weight or time) with an included rack.
- Backed by a 1-year warranty and USA-based customer support.

Frigidaire GMTK3068AF 30-Inch Stainless-Steel Gall
- Provides a clean, custom built-in aesthetic.
- Stainless steel finish matches Frigidaire Gallery appliances.
- Ensures proper ventilation for the microwave.
- Engineered for a precise fit with compatible models.
Detailed Reviews of the Best 30 Inch Built In Microwave
Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft. Built-in Microwave Oven - Large 2.2 cu. ft. capacity accommodates family-sized dishes.

This microwave offers a substantial 2.2 cu. ft. capacity, making it an excellent option for families or for heating larger dishes.
The sensor cooking feature is a convenient addition, as it automatically determines the appropriate power level and cooking time for various foods, which generally leads to evenly heated results. The unit is designed for a built-in installation, creating a clean, integrated look in the kitchen. However, it is crucial to understand that the trim kit, which is necessary for this type of installation, is not included and must be purchased separately.
Prospective buyers should also be diligent in measuring their cabinet space to ensure it matches the required cutout dimensions provided. Overall, it's a powerful and spacious microwave, but the installation requirements and extra costs for the trim kit are important factors to consider before purchasing.
Pros
- Large 2.2 cu. ft. capacity accommodates family-sized dishes.
- Sensor cooking feature automates time and power for better results.
- Sleek built-in design provides a high-end, integrated look.
- Spacious interior allows for cooking multiple items at once.
Cons
- The required trim kit for installation must be purchased separately, increasing the total cost.
- Requires specific cabinet cutout dimensions, limiting installation flexibility.
COSMO COS-MWD3012NHSS 30 in. Microwave Drawer - 1000 watts provides ample power for quick cooking.

This 1000-watt microwave handles all the basic functions effectively. The ten distinct power levels offer good control for a variety of cooking and reheating tasks, preventing the common issue of overcooked edges. The presets for popcorn, melting, and beverages are convenient for quick, everyday use.
A particularly useful feature is the smart defrosting system, which provides options for both weight and time, and the included rack promotes more even thawing. The build quality is standard for its category. A critical point for potential buyers is the unit's considerable size; at almost 30 inches wide, it requires a significant amount of counter space.
Be sure to measure your intended area carefully before making a purchase. It’s a capable machine for core microwave duties, as long as the dimensions fit your kitchen.
Pros
- 1000 watts provides ample power for quick cooking.
- Versatile defrosting with both weight and time options.
- Includes a defrosting rack for more even results.
- Simple and convenient one-touch presets for common foods.
- 10 power levels allow for precise cooking control.
Cons
- The exterior dimensions are very large and require substantial counter space.
- Lacks advanced features like sensor cooking or convection modes.
KoolMore KM-CWO30-SS Built-in Microwave with Convection Oven and Air Fryer - Combines microwave, convection, and air fryer functions, saving counter space.

This built-in combination oven offers impressive versatility in a single unit. The 1.6 cubic feet capacity is quite generous, easily accommodating standard-sized dishes and family meals. Its primary appeal is the 3-in-1 functionality, combining a 1000-watt microwave, a convection oven, and an integrated air fryer, which is a significant space-saver for any kitchen.
The controls are designed to be user-friendly, making it easy to switch between functions. The air fryer feature is a great addition for those looking to prepare healthier meals with less oil. While it requires manual cleaning, the interior is designed for easy upkeep.
The built-in design allows for a seamless and modern look in the kitchen. Overall, it's a solid, multi-functional appliance that consolidates several cooking methods into one sleek package, ideal for those who value convenience and a streamlined kitchen aesthetic.
Pros
- Combines microwave, convection, and air fryer functions, saving counter space.
- Generous 1.6 cubic feet capacity is suitable for various dish sizes.
- Sleek built-in design provides a modern, integrated look.
- User-friendly controls make operation straightforward.
Cons
- Lacks a self-cleaning feature, requiring manual cleaning after use.
Frigidaire PMBS3080BF 2.2 cu. ft. Built-In Microwave Oven with Sensor Cook - Designed for a clean, built-in look with a matching trim kit.

This microwave is a solid choice if you're looking for a unit specifically designed for a built-in installation. The performance is standard for a modern appliance; it heats evenly and handles daily defrosting and reheating tasks competently. The most critical aspect of this product is the installation.
The manufacturer provides very specific product and cutout dimensions, which are essential to follow for a proper fit. It's important to note that the aesthetic, integrated look is only achievable with the 30-inch trim kit, which is not included with the microwave. Without it, the unit will look unfinished in your cabinetry.
Before purchasing, be sure to double-check your measurements and factor the separate cost of the trim kit into your total budget. Overall, it's a functional appliance that fills a specific niche for custom kitchens.
Pros
- Designed for a clean, built-in look with a matching trim kit.
- Clear and specific cutout dimensions are provided for installation planning.
- Standard size is suitable for many common cabinet configurations.
- Performs essential microwave functions reliably.
Cons
- The required trim kit for a finished installation is sold separately, adding to the overall cost.
- Installation requires precise cabinet cutouts that may require professional help.
Zephyr 30 inch Built In Drawer Microwave Oven Unde - Seamless built-in design saves counter space.

This built-in microwave drawer is a solid performer that combines a sleek, space-saving design with practical features. Its ability to be installed flush with cabinetry creates a very clean and modern look. The 1000-watt output and 10 distinct power levels provide good cooking versatility, handling tasks from gentle defrosting to full reheating effectively.
The sensor cooking and reheating functions are a standout, consistently adjusting time and power to avoid over- or under-cooking leftovers. The interior capacity is impressive, easily fitting a 9x13 baking dish, which is a significant advantage. The LCD touch controls are responsive, and the touch-activated open/close mechanism for the drawer is a convenient touch that works smoothly.
While there are many settings to learn, its day-to-day operation is straightforward and reliable, making it a capable addition to a modern kitchen.
Pros
- Seamless built-in design saves counter space.
- Large interior capacity accommodates a 9x13 dish.
- Sensor cooking and reheating provides consistent results.
- Convenient touch-to-open and close drawer mechanism.
- 1000 watts with 10 power levels offers cooking flexibility.
Cons
- The extensive touch controls and settings may have a slight learning curve.
- Requires professional installation for a proper fit and function.
MilleLoom 30' Microwave Convection Oven - Versatile all-in-one functionality (microwave, convection, air fry, etc.).

This built-in microwave and convection oven combo serves as a versatile and practical solution for the modern kitchen. It successfully combines multiple cooking functions, including air frying and slow cooking, into a single unit, which is a significant space-saver. The 1.6 cubic foot capacity is quite generous, easily handling larger dishes and family-sized meals.
Its touch control panel is straightforward to navigate, and the preset modes simplify the cooking process, making it accessible for most users. The convection technology works as described, distributing heat evenly to prevent hot spots in both microwaved and baked items. While the 950-watt microwave power is fairly standard, it performs reliably for everyday tasks like defrosting and reheating.
Overall, it's a solid appliance that streamlines cooking by reducing the need for multiple gadgets while offering consistent performance across its various functions.
Pros
- Versatile all-in-one functionality (microwave, convection, air fry, etc.).
- Spacious 1.6 Cu. Ft. interior accommodates large dishes.
- Space-saving built-in design frees up valuable counter space.
- Intuitive touch controls and presets are easy to use.
- Convection technology provides even heating for consistent results.
Cons
- At 950W, the microwave may be slightly slower than higher-wattage models.
- Being a built-in unit requires specific cabinet dimensions for installation.
Summit MDR30SS 30" Wide Built-In Drawer Microwave for Installation in Wall or Island Openings - Sleek under-counter design saves valuable countertop space.

The Summit MDR30SS is a solid choice for anyone looking to integrate a microwave seamlessly into their kitchen cabinetry. Its 30-inch width is designed for standard under-counter installation, which is a great way to free up valuable counter space. The one-touch open and close feature is very convenient, especially when your hands are full.
Functionally, it covers all the essential bases with ten power levels, a weight-based defrost setting, and handy presets for popcorn and beverages. The angled touch control panel is a thoughtful design element, making it easy to read and operate without bending down too much. The stainless-steel finish and dark glass give it a premium, modern look that fits well with contemporary kitchen designs.
While it doesn't have advanced cooking modes, it performs its core microwave duties reliably and looks good doing it. It's a practical and stylish appliance for daily use.
Pros
- Sleek under-counter design saves valuable countertop space.
- Convenient one-touch automatic drawer open and close.
- Angled control panel is easy to see and use.
- Fits standard 30-inch cabinet openings for streamlined installation.
- Offers useful presets and multiple power levels for everyday cooking tasks.
Cons
- Lacks advanced features like convection or sensor cooking modes.
- The price point is generally higher than a standard countertop model.
COSMO COS-MWD3012NHBK 30 in. Built-in Microwave Drawer with Automatic Presets - 1000 watts with 10 power levels for consistent and controlled cooking.

This 1000-watt microwave performs its core functions reliably. With 10 distinct power levels, it provides good control for even heating, from gently softening butter to cooking a full meal. The automatic presets for common tasks like popcorn and beverages are a convenient touch for everyday use.
The defrosting system is particularly effective, offering options to set by weight or time, and the included rack is a useful accessory that improves results. A key consideration is its physical size; at nearly 30 inches wide, it is quite large and requires significant counter space, so measuring your area is essential. The build feels solid, and the inclusion of a 1-year limited warranty with USA-based support adds a layer of confidence in the purchase.
It's a straightforward, powerful appliance that gets the job done without unnecessary complexity.
Pros
- 1000 watts with 10 power levels for consistent and controlled cooking.
- Helpful presets for common, everyday tasks.
- Versatile defrost options (by weight or time) with an included rack.
- Backed by a 1-year warranty and USA-based customer support.
Cons
- The exterior dimensions are very large, requiring significant counter space.
- Features a limited number of specific automatic cooking presets.
Frigidaire GMTK3068AF 30-Inch Stainless-Steel Gall - Provides a clean, custom built-in aesthetic.

This Frigidaire Gallery trim kit is designed to give a compatible countertop microwave a professional, built-in appearance. The GMTK3068AF model is for a 30-inch cabinet opening, and its stainless steel finish matches well with other appliances in the Frigidaire Gallery line, creating a cohesive look. The installation process is relatively straightforward, provided your cabinet cutout dimensions are precise.
The kit includes all the necessary ducts and brackets to ensure the microwave is properly secured and ventilated, which is crucial for performance and safety. While the main frame is stainless steel, be aware that some structural components are plastic. It's a functional and aesthetic solution, but it is essential to confirm that your specific microwave model is listed as compatible before purchasing this kit.
Overall, it achieves its intended purpose effectively, transforming a standard microwave into an integrated kitchen feature.
Pros
- Provides a clean, custom built-in aesthetic.
- Stainless steel finish matches Frigidaire Gallery appliances.
- Ensures proper ventilation for the microwave.
- Engineered for a precise fit with compatible models.
Cons
- Price can be high for what is essentially a cosmetic frame.
- Strict compatibility; only fits specific microwave models and cabinet dimensions.
Buying Guide: What to Look For in a Best 30 Inch Built In Microwave
Types of 30-Inch Built-in Microwaves
When searching for a 30-inch built-in microwave, you'll encounter three main types. Standard built-in models, like the Frigidaire Gallery Series, fit into a cabinet cutout and offer large capacities. Microwave drawers, such as the COSMO and SHARP models, install under a counter or in an island, saving counter space and providing easy top-access. Finally, combination ovens, like the KoolMore and MilleLoom units, integrate microwave technology with convection and air frying functions, offering incredible versatility in a single appliance.
Key Features to Consider
Capacity and power are crucial factors. Models like the Frigidaire GMBS3068BF boast a large 2.2 cu. ft. capacity, perfect for family-sized dishes. Power, measured in watts, determines cooking speed; 1000 watts, as seen in the COSMO and Zephyr models, is a strong benchmark. Look for advanced features like sensor cooking, which automatically adjusts time and power for optimal results, and versatile presets for common foods. Multiple power levels provide the precise control needed for everything from melting butter to reheating leftovers.
Installation and Design
A primary benefit of a built-in microwave is the seamless, integrated look it provides. Models like the Frigidaire PMBS3080BF are designed with specific cutout dimensions and matching trim kits to achieve a clean, custom aesthetic. Microwave drawers from brands like SHARP and Summit offer a sleek, modern appearance with concealed, angled control panels. Always verify the required cabinet cutout dimensions before purchasing to ensure a perfect fit and proper ventilation for your new appliance.
Functionality and Versatility
For those looking to maximize kitchen utility, a multi-function unit is an excellent choice. The KoolMore KM-CWO30-SS and MilleLoom models combine a microwave with convection oven and air fryer capabilities. This all-in-one approach saves valuable counter space by eliminating the need for separate appliances. Convection technology ensures even heating for superior baking and roasting results, making these versatile units a powerful addition to any modern kitchen and a top contender for the best 30 inch built in microwave.
Frequently Asked Questions about Best 30 Inch Built In Microwave
What is the main difference between a standard built-in microwave and a microwave drawer?
A standard built-in microwave, like the Frigidaire Gallery models, is typically installed into a wall cabinet at eye or chest level and has a traditional side-swinging door. In contrast, a microwave drawer from brands like SHARP or Zephyr is installed under the counter or in an island. It slides out horizontally, allowing you to place and retrieve dishes from above. This design saves counter space, is more accessible, and provides a sleek, integrated look in the kitchen.
Is sensor cooking a feature worth having?
Absolutely. Sensor cooking, found in models like the Frigidaire Gallery Series and the Zephyr drawer microwave, is a highly valuable feature. It
Conclusion: The Final Verdict
The Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft. Built-in Microwave Oven a great choice for those needing a high-capacity, built-in microwave with smart features. it's recommended for users who have confirmed their cabinet measurements and budgeted for the separate purchase of the required trim kit.