: Horizontal "deep" freezers that open from the top.

: Vertical units that look like a standard refrigerator.

: Most energy-efficient; keeps food frozen longer during power outages.

: Extremely portable; fits under counters or on tabletops.

: Small units (1.1 to 5 cubic feet) for dorms or offices.

: Usually more expensive; prone to "freezer burn" due to auto-defrost cycles.