Capacity is measured in cubic feet; most kitchens benefit from 1.5‑1.7 cu ft for standard families, while larger households may prefer 1.9 cu ft for big dishes like roasts or multiple plates. Consider the interior dimensions and turntable size—models with a 12‑13.6‑inch turntable can accommodate larger plates and dishes. A larger cavity often means a slightly bigger footprint, so verify that it fits your cabinet space.

CFM (cubic feet per minute) indicates how much air the vent can move; higher CFM (e.g., 300 CFM) removes smoke, steam, and odors more quickly, which is crucial for open‑plan kitchens. Most models in this range offer a two‑speed fan, letting you balance quiet operation with strong suction when needed. If you cook often with strong aromas or stovetop burners, opt for the higher‑CFM option.

Sensor microwaves automatically adjust cooking time and power based on moisture levels, delivering more consistent results for reheating and defrosting. Manual models give you full control and may be simpler for experienced cooks who prefer precise settings. For everyday convenience, especially with frozen meals, a sensor model like the GE JVM7195SKSS is a strong choice.

Multi‑function units combine a microwave with air‑fryer, convection, and grill, allowing you to bake, roast, and crisp foods without a separate appliance. This can save countertop space and reduce the need for a traditional oven for small batches. However, they are typically pricier, so weigh how often you’ll use those functions against your budget.

Extended plans usually add two years of service coverage beyond the manufacturer warranty, covering parts, labor, and sometimes accidental damage. Brands like GE include a 2‑year premium plan with some models, which can be valuable if you expect heavy use or want peace of mind. If the microwave is a core kitchen appliance and you prefer low‑maintenance ownership, the plan can be worthwhile.

A turntable ensures even heating by rotating food, which is standard on most models; some units offer a turntable‑off setting for large dishes that won’t fit on the rotating plate. Models with a larger 12.4‑13.6‑inch turntable, like many Black+Decker 1.7 cu ft units, accommodate bigger plates and even whole chickens. If you frequently cook large items, verify the turntable size and the ability to disable it.

Both specifications refer to the microwave’s cooking power, but some listings differentiate between input (total electricity draw) and output (actual microwave energy). A 1000 W output model delivers the same heating performance, while a higher input rating may indicate a more robust power supply. In practice, the cooking speed and results will be similar across these models.

Easy‑to‑read displays, LED or digital readouts, and clearly labeled buttons improve usability, especially for quick cooking. Preset menus like popcorn, pizza, melt/soften, and multi‑stage cooking simplify common tasks and reduce guesswork. Models with one‑touch auto‑cook and sensor menus, such as Black+Decker’s 10‑level options, provide the most convenience for everyday cooking.