How to Clean an Ice Machine

Start by unplugging the machine and emptying the ice bin. If your model has a water filter, check the manual—some filters need replacing during cleaning. You’ll need a food-safe cleaner (citric acid or a commercial ice machine cleaner), a soft brush, and clean cloths. Never use bleach or abrasive scrubbers; they can damage the machine and leave harmful residue.

What You’ll Need

Food-safe ice machine cleaner (citric acid or commercial product)
Soft brush or sponge (non-abrasive)
Clean cloths or paper towels
Bucket or large container
Rubber gloves (optional)
New water filter (if your model has one)

Step-by-Step

Unplug and empty. Disconnect the power cord and remove all ice from the bin. Let any remaining ice melt, then discard it. If there’s a drain plug, open it to let water out.
Remove removable parts. Take out the ice bin, scoop, and any trays or curtains. Wash these in warm soapy water, rinse well, and set aside to dry.
Prepare the cleaning solution. Mix the cleaner according to the package directions—usually about 1–2 tablespoons of citric acid per quart of warm water. Never use more than recommended.
Wipe down the interior. Dip a soft cloth in the solution and wipe all interior surfaces, including the ice mold and door gaskets. Use a soft brush on stubborn spots. Avoid getting water into electrical parts.
Run a cleaning cycle. Pour the cleaning solution into the water reservoir (or as directed by your manual). Turn the machine on and let it run a full cycle, then discard the first batch of ice or water.
Rinse thoroughly. Run 2–3 cycles with plain water to flush out all cleaner residue. The ice produced now should taste clean—if not, run more rinse cycles.
Clean the condenser coils. Locate the coils (usually at the back or bottom) and vacuum or brush off dust. This keeps the machine efficient and prevents overheating.
Replace the water filter. If your unit has one, install the new filter now. Run a cycle to prime it.
Reassemble and sanitize. Put all parts back, wipe the exterior with a damp cloth, and plug the machine in. Run one more cycle, then discard that ice before using.

Common Mistakes

Using bleach or harsh chemicals—these can corrode parts and leave toxic residue.
Skipping the rinse cycle—leftover cleaner makes ice taste bitter and can be unsafe.
Forgetting to unplug—water and electricity don’t mix.
Cleaning only the bin and not the internal lines—bacteria hides in the tubing.
Using a metal scraper to remove ice—this scratches surfaces where mold grows.

Tips

Clean more often if your water is hard or you use the machine daily.
Check the manufacturer’s manual for model-specific instructions—some machines have a self-cleaning mode.
Keep the area around the machine dry to prevent mold on the exterior.
Use distilled water in countertop machines to reduce scale buildup.
Set a reminder to clean every 3–6 months.

Troubleshooting

Ice tastes off after cleaning. Run additional rinse cycles. If the taste persists, check that you used the correct cleaner concentration and that all parts are dry before reassembly.

Machine won’t turn on after cleaning. Make sure it’s plugged in and the water reservoir is filled. Check for a reset button or error code in the manual.

Ice is cloudy or soft. This often means scale is still in the system. Repeat the cleaning cycle with a fresh solution, and consider replacing the water filter.

Water leaks. Check that the drain plug is secure and all hoses are reconnected properly. Wipe up any spills immediately.

Mold keeps coming back. You may need to sanitize with a food-safe sanitizer after cleaning. Also, ensure the machine is in a well-ventilated area and the bin is completely dry before closing.

Frequently Asked Questions

How often should I clean my ice machine?

Every 6 months for home use, every 3 months for commercial or heavy use. If you notice a smell or slime, clean it sooner.

Can I use vinegar to clean my ice machine?

White vinegar is a mild descaler, but it can leave a lingering odor. Food-safe citric acid is better—use a commercial cleaner for best results.

Do I need to replace the water filter every time?

Not necessarily, but it’s a good idea to replace it every 6 months or as recommended by the manufacturer. Check your manual.

Is it safe to use bleach to sanitize?

No. Bleach can damage the machine and leave harmful residues. Use a food-safe sanitizer or cleaner.

Why does my ice smell like mold?

Mold or bacteria is growing in the machine. Clean thoroughly with a food-safe cleaner, and ensure the bin dries completely between uses.

Can I clean the ice machine while it’s running?

No. Always unplug and empty the machine before cleaning to avoid electrical hazards and injury.

Sources: NSF International. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.