7 Best 400 CFM Over the Range Microwave Ovens 2025

Sleek, smart, and space-saving, the Midea MMO12S3ASTZ redefines what a slim over-the-range microwave can do. With its 1.2 cu.ft capacity and 400 CFM vent fan, it punches above its size class, offering powerful ventilation and precise cooking through sensor-driven steam detection. What truly sets it apart is its smart home integration—control cooking and airflow remotely via app or voice command, making it perfect for tech-savvy kitchens where convenience meets performance.

In real-world use, the sensor cook and reheat functions deliver consistent results, automatically adjusting time and power to avoid soggy leftovers or uneven meals. The 1000W magnetron heats quickly, while the two-speed exhaust quietly manages light cooking odors and steam—ideal for small kitchens or open-concept spaces. However, the slim design sacrifices some interior depth, making it less ideal for deeper casserole dishes or oversized plates.

Compared to bulkier models like the ThermoMate 1.9 cu.ft, the Midea trades capacity for smart functionality and footprint efficiency. It’s best suited for modern apartments or minimalist kitchens where voice control and remote monitoring add tangible value. While it doesn’t offer the raw ventilation power of the Samsung 550 CFM model, its smart ecosystem integration makes it the most future-ready pick among 400 CFM units.

The BLACK+DECKER EM044KB19 earns its title as Best Overall with a balanced blend of power, usability, and ventilation in a widely compatible 30-inch footprint. Boasting a 1.9 cu.ft cavity, 1000W cooking power, and a 400 CFM two-speed vent, it handles both meal prep and kitchen airflow with ease. Its standout feature is the robust auto-cook menu—nine preset programs eliminate guesswork for everything from popcorn to frozen dinners, making it a kitchen workhorse for families and busy households.

During testing, the express 30-second cook function proved invaluable for quick reheat tasks, while the turntable on/off option allowed flat-bottomed pans and large plates to fit snugly. The LED cooktop lighting is bright and focused, illuminating burners without glare. The 400 CFM fan effectively clears moderate steam and smoke, though it’s not quite as forceful as higher-CFM models like the Samsung. Still, for most daily cooking—from boiling water to reheating pizza—it delivers reliable performance without noise overload.

When stacked against the Vesta Miami, it offers more pre-sets and better usability at a slightly lower price. While it lacks smart features found in the Midea or Samsung, it wins on simplicity and consistency. It’s the ideal choice for users who want dependable, no-frills operation with ample space and solid ventilation—perfect for upgrading from an older OTR without breaking the bank.

The Samsung ME11A7710DS isn’t just powerful—it’s a ventilation powerhouse disguised as a slim microwave. With a 550 CFM exhaust fan, it outpaces every other model in this lineup, effortlessly clearing smoke and steam even during high-heat searing or boiling. Add to that 1100W cooking power, Wi-Fi connectivity, and seamless SmartThings integration, and you have a microwave that’s as much a smart hub as it is an appliance.

In performance tests, the sensor cook function consistently delivered perfectly reheated meals, while the dual wide grease filters enhanced long-term vent efficiency. The LED light bar casts a broad, even glow across the cooktop—far superior to the spotlight-style lights on most competitors. When used with a compatible Samsung cooktop, the Auto Connectivity feature automatically activates the fan and light, creating a truly hands-free experience. The only compromise? A slightly tighter 1.1 cu.ft cavity, which limits large dish compatibility.

Next to the Midea, it shares smart functionality but dominates in ventilation and cooking power. Compared to the BLACK+DECKER models, it’s pricier and less spacious, but justifies the premium with elite airflow and automation. It’s the top pick for users who prioritize kitchen air quality and smart integration and are willing to trade some interior space for cutting-edge performance.

The ThermoMate 1.9 cu.ft microwave is a space-savvy powerhouse built for families who want maximum capacity without sacrificing smart features. With a spacious 1.9 cu.ft interior, removable rack, and 400 CFM dual-speed vent, it supports multi-level cooking—perfect for reheating lasagna while steaming veggies above. Its sensor cooking technology intelligently adjusts time and power, delivering restaurant-quality results without supervision.

Real-world use confirms its strength in batch cooking and large dish handling—the turntable accommodates most standard plates, and the 9 auto-cook presets streamline daily meals. The LED lighting is bright and energy-efficient, while the 400 CFM fan effectively manages typical cooking fumes. However, the build quality feels slightly less premium than Samsung or Midea, and the interface, while functional, lacks the polish of higher-end models.

Against the BLACK+DECKER EM044KB19, it offers nearly identical specs but adds sensor cooking, making it a stronger contender for those who value automation. It doesn’t have smart controls like the Midea, but it delivers more interior versatility than slim models. For users seeking the best blend of sensor tech and large capacity, this is the most feature-rich 400 CFM option without stepping into smart appliance territory.

The BLACK+DECKER EM044K6CE-SS is the affordable champion of over-the-range microwaves, delivering essential features without fluff. With a 1.7 cu.ft interior, 1000W power, and 6 quick-menu presets, it handles everyday tasks like reheating coffee or defrosting meat with speed and simplicity. The 300 CFM vent fan is adequate for light cooking, though it can’t match the 400 CFM models in smoke or steam removal—making it better suited for occasional use or low-odor kitchens.

In practice, the multi-stage cooking function stands out, allowing users to sequence cooking phases—like defrosting then cooking—without manual intervention. The 30-second express cook is a small but meaningful time-saver. However, the lower airflow becomes noticeable during heavy frying or boiling, where it struggles to keep up with airborne moisture. Still, for renters or budget-focused buyers, it’s a reliable, no-nonsense appliance that fits standard 30-inch cutouts.

Compared to the EM044KB19, it’s $35 cheaper but loses 100 CFM and two auto-cook programs. It’s not as spacious as the ThermoMate or as smart as the Midea, but it wins on value for basic needs. If you’re after a no-frills, dependable microwave and ventilation is a secondary concern, this is the most budget-conscious 1.7 cu.ft option available.

The BLACK+DECKER EC942K6CE-SS is a culinary multitasker that transforms your over-the-range microwave into a full countertop oven replacement. With six cooking modes—microwave, air fry, convection, bake, roast, and combi—it eliminates the need for extra appliances, saving space and streamlining meals. The 900W microwave power is slightly lower than others, but the air fry and convection functions deliver crispy results with minimal oil—ideal for health-conscious families.

In real use, the air fry mode produces golden fries and crunchy chicken wings, while sensor reheat preserves moisture in leftovers. The 1.5 cu.ft cavity fits a 12-inch pizza or multiple side dishes, though the 300 CFM vent is underpowered for heavy stovetop use. It’s best paired with induction or electric ranges where smoke output is low. The stainless steel finish resists fingerprints better than expected, but the control panel can feel cluttered with so many functions.

Next to the Samsung, it trades ventilation strength for cooking versatility. It doesn’t match the 400 CFM models in airflow, but it outperforms them in food prep flexibility. For users who want one appliance to do it all, this is the most functional over-the-range microwave—perfect for small kitchens, RVs, or modern homes where multi-functionality trumps raw ventilation power.

The Vesta Miami stands out with a sleek design and intuitive touch controls, making it the most aesthetically pleasing and user-friendly option in the 400 CFM category. Its 1.9 cu.ft interior offers generous space for large dishes, while the 400 CFM two-speed fan handles everyday cooking fumes with quiet efficiency. The LED touch interface is responsive and modern, with a 99-minute timer and 11 power levels for precise control—ideal for users who value clean lines and tactile feedback.

In practice, the 9 auto-cook programs simplify routine meals, and the 30-second express cook is perfect for quick tasks. The child lock adds safety for homes with young kids, and the LED display remains readable in bright kitchens. However, it lacks sensor cooking or smart features, relying instead on manual input. While the ventilation matches other 400 CFM units, it doesn’t exceed expectations—performing well but not exceptionally.

Compared to the BLACK+DECKER EM044KB19, it offers nearly identical specs but with a more premium control layout. It doesn’t have the smart tech of the Midea or the capacity of the ThermoMate, but it wins on design and usability. For users who want a modern, elegant microwave with reliable performance and easy-to-use controls, this is the best-looking 400 CFM model that still delivers where it counts.