Whirlpool 20 Cu. Ft. Upright Freezer with Temperature Alarm (WZF79R20DW) review

A larger upright with four adjustable wire shelves

Whirlpool markets the WZF79R20DW as a 20-cu.-ft. white upright freezer with a temperature alarm. The exact comparison record lists 19.65 cu. ft.; the older dimension guide says 19.6 cu. ft., and the EnergyGuide labels capacity at 19.8 cu. ft. These are separate manufacturer-published figures and are not silently averaged. For the site's numeric capacity matching, the comparison record's more precise 19.65-cu.-ft. value is used; the published 20-cu.-ft. name remains useful context, not proof that a specific carton fits. This is a document-based assessment, not a hands-on test or measurement.

The exact comparison record describes four adjustable full-width wire shelves. That is one more adjustable shelf than the three-shelf WZF56R16DW or the WZF57R16FW's one fixed/two adjustable arrangement. The model page and comparison record also support LED lighting, electronic temperature controls, frost-free defrost, Fast Freeze, a freezer door lock and optional icemaker compatibility. Whirlpool lists both a temperature-monitor alarm and a door-open alarm in the exact comparison record. The available material does not establish an alarm threshold, remote notification or a specific response to a power failure, so the alerts should be treated as local prompts rather than continuous food monitoring. The icemaker is optional; verify the exact kit, water supply and installation parts before treating it as included.

Capacity and energy are distinct published measures

Whirlpool's exact comparison page gives 19.65 cu. ft., and its dimension guide lists a 19.6-cu.-ft. model size. The EnergyGuide for the WZF79R20D*0* family gives 19.8 cu. ft. label capacity and estimates 525 kWh per year. The product title rounds the freezer to 20 cu. ft. The matcher uses 19.65 as its capacity value so the 19.6 and 19.7 minimum choices fall on opposite sides of the exact comparison figure; the EnergyGuide number is kept separately. A shopper should not read any of these as a measure of the shape or access of stored food. Compare the actual dimensions and shelf spacing with your largest packages, and remember that more listed volume can still be inconvenient if the door or shelf openings do not suit them.

The 525-kWh figure is a standardized label estimate, not a prediction of a household's bill. It depends on the label's test procedure; use pattern, ambient room conditions and local utility rates differ. The exact product page reviewed here does not establish ENERGY STAR certification for this suffix, so the assessment leaves that field unknown rather than transferring a certification from another Whirlpool freezer.

Check the tall, wide installation envelope

The exact product page lists 66.75 in. height, 33.25 in. width and 29.125 in. depth. The family dimension guide breaks out 30 in. depth including handles, 29.125 in. excluding handles, and 58.875 in. depth with the door open 90 degrees. It labels its figures planning dimensions and directs buyers to the installation instructions packed with the product. A cabinet opening alone is not enough to establish fit: allow for handle projection, full door swing, hinge-side clearance, delivery turns and the top/side/back ventilation gaps. Whirlpool's family guide requires 3 in. at the sides and top and 1 in. behind, and advises extra hinge-side room near a fixed wall.

The exact model family guide specifies a grounded 115-V, 60-Hz supply on a fused 15- or 20-A circuit, recommends a separate circuit and says not to use an extension cord. Confirm the actual outlet and the current installation instructions before delivery. The guide's location advice says the surrounding room should not fall below 40°F for most efficient operation. It is a conservative placement reference, not an experimentally determined hard failure threshold; the reviewed documents do not specify an upper room-temperature limit. This assessment therefore does not label the freezer garage-ready and it does not match a warm-room maximum. Measure a seasonal room rather than relying on its average temperature.

Why choose this over a 16-cu.-ft.-class model?

WZF79R20DW makes more sense when its taller 66.75-in. cabinet and wider 33.25-in. footprint are acceptable in exchange for the comparison-listed 19.65-cu.-ft. volume and four adjustable shelves. WZF56R16DW and WZF57R16FW are smaller, narrower 16-class alternatives. WZF56 has three adjustable shelves and a 15.68-cu.-ft. compare value; WZF57 has a fixed upper shelf, a 16-cu.-ft. compare value and ENERGY STAR certification. The WZF57 has a separate 30.25-versus-34-in. width conflict, so it should not be treated as a guaranteed smaller-fit option until its exact installation drawing is confirmed. All three have frost-free defrost and the two local alarm types, but their capacities, layouts and label values differ.

The exact source set does not settle whether WZF79R20DW can operate in a hot garage, an unheated room below 40°F, or a specific refrigerator-conversion mode; the page documents it as a dedicated freezer, and no conversion feature is listed in its chart row. If those functions or environmental extremes matter, confirm the complete model's current manual rather than relying on a broad brand-level statement. The CPSC exact ProductName query returned an empty collection, which is only a limited search and not serial-number recall clearance.

Final checks before selecting the model

Put WZF79R20DW on a shortlist if you need more room than a 16-cu.-ft.-class upright, want four adjustable wire shelves, frost-free care and both listed local alarms, and can accommodate a wider/taller body. Check whether your minimum-capacity choice uses 19.6 or 19.7 cu. ft.; this assessment records the exact compare value as 19.65, so the model meets the former but not the latter. Then check shelf spacing, the open-door path, handles, exact voltage/circuit, required ventilation and optional icemaker package. Confirm the full suffix on the delivered unit and review its current installation drawing, seller's delivery/return conditions and warranty. The official image shown is the model-page-linked closed-front exterior; it does not show the four shelves or prove any dimension or operating feature.