How to Clean a Nugget Ice Maker (Step-by-Step)
Quick answer: Follow the cleaning instructions for your exact nugget ice-maker model. Unplug and drain the reservoir and any optional side tank, hand-wash removable parts, use only the specified cleaning or descaling solution, run the dedicated clean cycle if equipped, complete all required fresh-water rinses, and dry accessible surfaces. Cleaning and descaling intervals depend on the model, water hardness, and usage.
Nugget ice — the soft, chewable "pebble" ice made famous by Sonic — is the most popular ice there is, but the machines that make it are also the most complex to keep clean. A nugget ice maker has a larger water reservoir, an auger and compression system, and often a separate side tank, which means more surfaces where scale, slime, and mold can hide. The good news: the cleaning routine is straightforward once you know the steps. These ice maker cleaning instructions are a focused companion to our complete pillar guide on how to clean an ice maker, zoomed in on nugget models.
Why Nugget Ice Makers Need Frequent Cleaning
Nugget ice makers continuously recirculate water and compress soft ice flakes through an auger, so they stay wet and warm inside — ideal conditions for mold, mildew, and pink slime. Minerals from tap water also leave scale on the reservoir, side tank, and water lines.
Because these machines have more components than a simple cube maker, buildup has more places to hide. Neglect leads to:
- Cloudy, bad-tasting, or mushy nugget ice from scale and stale water.
- Pink, black, or green slime in the reservoir, side tank, and around seals.
- Slower ice production as scale coats the system.
- Musty odors that transfer to your drinks.
Regular cleaning keeps nugget ice fresh, chewable, and safe — and protects an expensive machine.
What You'll Need
Gather these before you start:
- White vinegar (or a dedicated nugget ice maker cleaner or cleaning solution)
- Warm water
- Mild dish soap
- A soft cloth or non-abrasive sponge
- A small soft brush or old toothbrush (for the side tank, chute, and corners)
- A clean, dry towel
Safety note: Always unplug the machine first, and never mix vinegar with bleach. Avoid abrasive scrubbers that can scratch the reservoir or damage the auger.
How to Clean a Nugget Ice Maker: Step-by-Step Instructions
Follow these seven ice maker cleaning instructions to clean almost any nugget model. Always check your manual first for a built-in clean cycle.
Step 1 — Empty and drain the reservoir and side tank
Turn off and unplug the machine, remove all the ice, and discard it. Drain the main reservoir and any side tank only by the method specified for the model—such as capped rear hoses, a drain plug, or removal of the tank.
Draining a countertop nugget ice maker and its optional side tank through the rear hoses.
Step 2 — Remove and wash the ice bin and removable parts
Take out the ice bin, scoop, and any removable trays or the side tank. Wash them in warm water with mild dish soap, using your brush to clear buildup from corners and seals. Rinse and set aside.
Step 3 — Mix a vinegar or nugget ice maker cleaner solution
Prepare only the cleaning, descaling, or sanitizing solution specified in the model manual. Approved products and concentrations vary: some nugget machines permit hot white vinegar for descaling, while others specify a branded cleaner or a separate sanitizing solution. Never mix vinegar, bleach, cleaner, or sanitizer.
Step 4 — Run the clean/self-cleaning cycle
Add only the model-approved cleaning or descaling solution to the main reservoir in the amount the manual specifies. If the machine has a clean or self-cleaning cycle, start that mode and complete every required drain and fresh-water rinse. Do not run a normal ice-making cycle with cleaning solution unless the manufacturer explicitly directs it, and wash an optional side tank separately unless its instructions say otherwise.
Starting the manufacturer-provided cleaning cycle on a countertop nugget ice maker.
Step 5 — Scrub the reservoir, side tank, and chute
Use a soft cloth or approved brush on accessible reservoir walls, the removable side tank, water inlet, seals, and ice chute. If the model has accessible optical bin sensors, clean them gently as the manual directs. Never insert tools into the auger, extruding head, or other moving mechanisms.
Gently clean the two accessible optical sensors at a nugget ice-maker chute.
Step 6 — Drain, refill, and run rinse cycles
Empty the vinegar solution, refill the reservoir with fresh water, and run one or two more cycles to flush out residue. Wipe the interior once more with clean water so no vinegar taste lingers.
Step 7 — Dry and leave the lid open
Dry all parts with a clean towel, reassemble, and leave the lid open so the interior air-dries fully. Discard the first fresh batch of nugget ice, and the machine is ready to use.
How to Clean a Nugget Ice Maker With Vinegar
White vinegar is an approved descaler for some nugget ice makers, but it is not a universal cleaning or sanitizing method. Use it only when the model manual permits it, at the specified concentration and contact time, followed by every required rinse.
- Model-specific clean: Use the solution, concentration, clean mode, dwell time, and rinse sequence specified in the owner’s manual. Clean an optional side tank separately unless its instructions say it belongs in the circulation process.
- Light maintenance: A weaker 10:1 water-to-vinegar rinse freshens the machine between deep cleans.
- Always rinse: Follow with two fresh-water cycles so your nugget ice never tastes sour.
Use plain white distilled vinegar, and never combine it with bleach. If your manufacturer advises against vinegar, use their recommended cleaner instead.
Using a Nugget Ice Maker Cleaner or Descaler
When your machine has heavy limescale — or you prefer a purpose-made product — a nugget ice maker cleaner, descaler, or cleaning solution works faster than vinegar. These are formulated to break down calcium and lime quickly and often include a sanitizing step.
To use one:
- Follow the dilution and dwell-time instructions on the label exactly.
- Choose a nickel-safe formula if your machine has nickel-plated parts.
- Run a sanitizer step afterward if the product recommends it, then rinse with two or more fresh-water cycles.
A cleaner-plus-sanitizer routine is the best way to fully clear scale and biofilm from a nugget machine's complex parts.
How to Remove Mold and Slime From a Nugget Ice Maker
Colored residue or biofilm can appear on accessible reservoir, side-tank, chute, or seal surfaces. To address it:
- Unplug and remove only the parts the model manual identifies as user-removable.
- Apply the manufacturer-approved cleaning or sanitizing solution at the specified concentration and contact time.
- Clean accessible surfaces with approved soft tools; do not insert tools into the auger, extruding head, or sealed mechanisms.
- Drain, rinse, dry, and reassemble exactly as directed. Contact service if buildup is inside inaccessible components.
Prevent it from returning: empty the water when the machine sits idle, use filtered water, leave the lid open to dry, and clean more often.
Cleaning Nugget Ice Makers by Brand
Most nugget ice makers clean the same way, but a few brands have specifics worth knowing.
GE Profile Opal
GE Profile Opal cleaning instructions differ by model generation and control layout. Use the support procedure for the exact model to choose the permitted solution, clean-cycle controls, drain-hose sequence, rinse count, and optional side-tank care.
Frigidaire & Frigidaire Gallery
Frigidaire and Frigidaire Gallery nugget makers follow the standard vinegar-or-cleaner routine and many include a clean mode. To clean a Frigidaire nugget ice maker, add solution, run the clean cycle, and rinse thoroughly. See our dedicated Frigidaire ice maker cleaning guide for model-specific steps.
Euhomy, GE, Scotsman & others
Nugget ice makers from different brands do not share one universal cleaning procedure. Use the exact model manual to identify its drain method, permitted cleaner, clean-cycle controls, rinse count, side-tank care, and accessible components.
How Often to Clean a Nugget Ice Maker
Follow the model’s required cleaning and descaling schedule. For example, some GE Opal models recommend weekly cleaning while descaling frequency changes with water hardness. Heavy use, hard water, visible residue, cloudy ice, or odor can require earlier service.
Frequently Asked Questions
How do you clean a nugget ice maker?
Unplug and drain the main reservoir and any optional side tank, hand-wash removable parts, then follow the exact model instructions for cleaning solution, clean mode, draining, and fresh-water rinses. Wipe only accessible surfaces and dry the machine as directed.
How do I clean a nugget ice maker with vinegar?
Use vinegar only when the model manual permits it. Follow the specified concentration, reservoir location, clean mode, contact time, drain method, and number of fresh-water rinses; do not run a normal ice-making cycle with cleaning solution unless directed.
What is the best nugget ice maker cleaner?
White vinegar works well and is inexpensive for routine cleaning. For heavy scale, a nickel-safe nugget ice maker cleaner or descaler paired with a sanitizer is more effective. Always follow the label and rinse thoroughly with fresh-water cycles afterward.
How often should you clean a nugget ice maker?
Use the schedule in the model manual. Water hardness, usage, and visible residue can shorten the interval; clean promptly if you see residue, cloudy ice, or notice an odor.
Why is there slime or mold in my nugget ice maker?
Standing water and residue can support biofilm on accessible water-contact surfaces. Drain idle water, clean removable components and accessible surfaces as directed, use the recommended water type, and obtain service rather than inserting tools into an auger or sealed mechanism.
How do I clean a Frigidaire nugget ice maker?
Use the owner’s manual for the exact Frigidaire model; permitted solutions, controls, rinse cycles, drain locations, and side-tank designs vary. Do not assume another nugget machine’s procedure applies.
Does a nugget ice maker have a self-cleaning cycle?
Some models include a dedicated clean mode. Follow the exact control sequence, solution, draining, manual surface-cleaning, and rinse instructions for that model; a clean cycle does not make inaccessible moving parts safe to scrub.
Final Thoughts
Cleaning a nugget ice maker takes a little more attention than a simple cube machine because of its side tank and auger, but the payoff is fresh, chewable, restaurant-quality ice at home. Run a vinegar or cleaner cycle every week or two, deep clean monthly, empty the water when idle, and tackle slime the moment you spot it. For the big picture across every machine type, see our complete guide on how to clean an ice maker, and if you have a different unit, check our guides for countertop ice makers and portable ice makers.
