For a household of four to six people, a capacity of 1.5 – 1.9 cu ft. provides enough space for large dishes, pizza pans, and multi‑stage cooking. Models like the Black+Decker 6‑in‑1 (1.5 cu ft.) and ThermoMate 1.9 cu ft. give you that extra room, while the GE Profile 1.7 cu ft. offers a middle ground. Choose the larger size if you frequently bake casseroles or use the convection function.

CFM (cubic feet per minute) measures how much air the exhaust fan can move; higher numbers clear smoke and steam faster. The Black+Decker 6‑in‑1 and its 300 CFM two‑speed fan are strong enough for most stovetops, whereas ThermoMate’s 400 CFM model provides extra power for heavy‑cook meals. If you have a high‑BTU range, aim for at least 300 CFM to keep the kitchen comfortable.

The Black+Decker 6‑in‑1 (ASIN B0FSCVWPPJ) is the only model in this set that explicitly lists both convection and an air‑fry mode, giving you a true multi‑cook appliance. GE’s Profile 1.7 cu ft. also includes an air‑fry function but pairs it with a smaller convection fan. If air‑fry is a priority, the Black+Decker unit offers the most versatile feature set.

Yes. Black+Decker’s 6‑in‑1 and EM044KB19 models provide ten one‑touch auto menus for common foods, while GE’s JVM7195SKSS adds sensor cooking that automatically adjusts time and power. Sharp’s R1874T uses a two‑color interactive display, and ThermoMate models focus on a simple digital keypad with quick‑cook buttons. Choose a model whose interface matches your comfort level—more presets for convenience, or a sensor for precision.

Higher wattage (e.g., 1000 W in most Black+Decker and ThermoMate units) shortens cooking times and improves browning, especially when using convection or air‑fry modes. However, wattage alone doesn’t guarantee even heating; turntable size, power‑level options, and sensor technology also play roles. A balanced choice—around 1000 W with good sensor and convection features—generally offers the best overall results.

All over‑the‑range microwaves require a 30‑inch cabinet width, but depth and height vary. For example, the KoolMore model needs a minimum of 66 inches from floor to the top of the unit and 13 inches of clearance above the stove. Measure your existing cutout and ensure there’s enough space for the vent duct and any side‑clearance required by the fan.

Extended protection plans, like the two‑year coverage included with GE’s Profile and JVM7195SKSS models, can reduce long‑term maintenance costs and provide peace of mind. Black+Decker and ThermoMate typically offer a standard one‑year warranty, which may be sufficient if you plan to replace the unit within a few years. Weigh the cost of the extended plan against the likelihood of repairs when budgeting for your purchase.

The Black+Decker 6‑in‑1 (ASIN B0FSCVWPPJ) stands out with its 1.5 cu ft. capacity, 300 CFM dual‑speed vent, convection, air‑fry, and sensor reheat—all at a competitive price point. ThermoMate’s 1.9 cu ft. model adds a larger interior and 400 CFM fan but comes at a higher cost. For most households, the Black+Decker unit delivers the most versatile feature set without a premium price tag.