Dimensions of an Undercounter Ice Maker | What Fits Your Kitchen

Standard undercounter ice makers measure 35 inches tall, 15-18 inches wide, and 23-24 inches deep, with commercial models varying beyond these ranges.

Buying an undercounter ice maker starts with one real question: will it fit? The space under your counter might look like it will hold most any appliance, but ice makers have specific sizing rules that catch first-time buyers off guard. Understanding the dimensions of an undercounter ice maker and how to measure your opening correctly will save you from buying a machine that simply cannot slide into place.

What Are The Standard Dimensions Of An Undercounter Ice Maker?

Most residential undercounter ice makers fall within a tight size band. KitchenAid’s undercounter ice maker dimensions guide lists a standard height of 35 inches, a width range of 15 to 18 inches, and a depth range of 23 to 24 inches. These numbers cover the majority of consumer models built to fit under a standard kitchen counter.

Commercial machines run wider and taller. A 15-inch-wide commercial unit can reach 34 inches in height, while larger models go up to 30 inches wide and 39 inches tall. The full commercial category spans roughly 14 to 30 inches in width and 30 to 40 inches in height, depending on ice type and daily production capacity. Residential units typically store 25 to 30 pounds of ice, with some 18-inch models holding up to 35 pounds. Production ranges from about 50 pounds per day for a small unit to over 400 pounds per day for commercial machines.

Published dimensions vary noticeably between specific models. The GE 15-inch undercounter ice maker measures 34.13 inches tall by 14.88 inches wide by 14.88 inches deep — far shallower than the typical 23-24 inch depth. The NewAir 15-inch nugget model (NCI066SSN0) is 33.1 inches tall, 15 inches wide, and 17.9 inches deep, with a required cut-out of 34 by 16 by 18 inches. The COTLIN IMC25BI drainless crescent ice maker comes in at 33.8 inches tall, 14.9 inches wide, and 18.5 inches deep. For a closer look at what is available in the popular 15-inch class, see our tested roundup of the best 15-inch models.

The table below compares the published dimensions for four representative models.

How Do You Measure Your Space Correctly?

The right measurement process keeps you from buying a unit that does not fit. Measure the cabinet opening at multiple points — width, height, and depth — and always use the smallest dimension you find. Openings are rarely perfectly square, and relying on a single measurement is the most common sizing error.

Your opening should be at least 1 inch wider and 1 inch deeper than the ice maker itself. For height, aim for no more than 1 inch of gap above the unit if you want a built-in look. Account for the space behind the unit for the water line, drain line, and power cord — these connections can add several inches of required depth that is easy to overlook when you are only looking at the appliance’s own specs.

Door swing clearance matters. The unit must open fully without hitting a wall, cabinet face, island, or another appliance handle. Ventilation clearance is equally important — air-cooled models draw air in and exhaust heat, and blocking those pathways hurts performance and can shorten the machine’s life. Check for uneven flooring that might tilt the unit, and keep the machine away from heat sources like ovens, grills, or dishwashers.

Common Sizing Mistakes To Avoid

Several pitfalls trip up buyers consistently. Measuring only the front edge of the opening instead of the narrowest point is the most frequent error — cabinets often bow or narrow toward the back. Ignoring the space required for water, drain, and power connections behind the unit leads to a machine that cannot slide all the way in. Buying based solely on exterior width without checking full cut-out height and depth is another common miss, especially since published dimensions vary so much between models. Assuming all undercounter ice makers fit the same standard opening ignores the real differences between cube, nugget, and flake machines and between residential and commercial lines.

Pricing reflects this range. Small residential units start around $890, as seen with the COTLIN IMC25BI at its retail price of $889.99. Commercial guides place small undercounter units at $1,500 to $2,000, mid-size modular machines at $3,000 to $6,000, and high-capacity units at $8,000 to $15,000 or more. Professional installation is recommended where dedicated electrical circuits, plumbing, and drain slope or backflow prevention are required.