How to Clean an Ice Machine? | Step-by-Step for Every Type

Mold, slime, and mineral scale build up fast in any ice machine, whether it’s a countertop nugget maker or a commercial unit under a bar. A regular cleaning keeps the ice tasting fresh and the machine running longer. The right way to clean an ice machine follows a clear order: power down, empty it, tear down the removable parts, clean, flush, and discard the first new batch of ice.

Before You Start: What You Need

Gather the right supplies before you touch the machine. The most important one is the cleaner. Use a nickel-safe ice machine cleaner, which protects the metal parts inside most units. You’ll also want a soft brush or non-abrasive pad, a clean cloth, and access to fresh water.

• Nickel-safe ice machine cleaner — protects evaporator plates and other metal surfaces
• Soft brush or non-abrasive pad — removes scale without scratching
• Clean cloths — for wiping down the bin and internal surfaces
• Fresh potable water — for mixing cleaner and final rinsing

Never use unapproved chemicals. The County of San Bernardino’s Environmental Health Services guidance says to use only approved chemicals to sanitize and to consult the manufacturer if instructions are not listed on the website. Abrasive tools or harsh cleaners can damage components and leave unsafe residues behind.

The Cleaning Process, Step by Step

The exact steps vary by model, but the core sequence stays the same across countertop, undercounter, portable, freezer, and commercial machines. Always check your specific model’s manual for cleaner dilution and cycle timing.

1. Turn Off and Empty the Machine

Start by turning off the power or moving the toggle to the off position. If your manual says to shut off the water supply, do that now. KitchenAid’s instructions say to turn off the ice maker and wait 5 to 10 minutes for ice to fall into the storage bin before cleaning. Remove every piece of ice from the bin or reservoir. The first batch of ice produced after cleaning must be discarded, so empty it completely.

2. Remove and Soak Removable Parts

Take out all removable components. These include troughs, curtains, distribution tubes, and any other parts that contact water or ice. Soak them in a diluted nickel-safe cleaner solution. Let them sit, then scrub gently with a soft brush to lift off scale and film. Rinse each part thoroughly with fresh water.

3. Clean the Interior and Run the Wash Cycle

Wipe down the bin walls and internal surfaces with the cleaning solution. For the machine’s recirculating system, one product sheet suggests 5 fluid ounces of cleaner per gallon of water if you don’t have manufacturer instructions. If your unit has an automatic clean or wash cycle, run it now. Ice-O-Matic’s ICE-Series instructions, for example, walk you through moving the toggle to WASH, purging the water, and adding nickel-safe cleaner to make one gallon of solution that circulates for about 15 minutes. Follow your manual’s cycle timing and solution volume exactly.

4. Flush, Sanitize, and Reassemble

After the cleaning cycle finishes, flush the system with fresh water. Per Whirlpool’s guidance, you may also need to remove the drain cap from the bottom of the water pan and let it drain fully before wiping the bin with a warm washcloth and approved cleaner. Sanitize only if your manufacturer requires it or if you’re cleaning a foodservice unit. Once everything is rinsed and dried, reassemble the parts and return the machine to service. Discard the first batch of ice it makes.

How often you clean depends on use. A home machine needs it every few months, while a busy commercial unit may need weekly attention. If ice develops an off taste or smell, clean it sooner.

How to Clean an Ice Machine: Safety and Model-Specific Rules

Safety comes down to a few simple rules. Unplug the machine for service-style cleaning to avoid electrical hazards. Use nickel-safe cleaner where your machine’s materials or manufacturer require it. Avoid abrasive tools on internal or finished surfaces. And never rush the flush — leftover cleaner residue ruins the taste of ice and can be unsafe.

If your manual is missing, public health guidance says to discard all ice first, check the manufacturer’s website for instructions, and use only approved sanitizing chemicals. The Safe Ice guide for commercial machines follows the same core process, confirming the universal sequence of purge, clean, rinse, and sanitize.

For a machine that runs often, a clean unit also makes better ice. If you’re considering a new commercial nugget ice machine, look for models with removable parts and clear cleaning cycles, since those are the easiest to maintain.

The routine is simple: empty, soak, clean, flush, and discard the first batch. That cadence keeps every glass of ice tasting clean and your machine running reliably.