How to get clear ice from an ice maker

The ice maker in a refrigerator is a small, fast, unattended appliance, and every design decision in it works against clarity. A valve admits a measured shot of water into a metal mold that is already cold. The mold is chilled from below and around, so the water freezes quickly from several faces at once. When the cube is solid, a heater briefly warms the mold and a rake or a twist ejects the ice into the bin, and the cycle starts again. The whole point is throughput with no human involved.

Clear ice needs the opposite of all of that. It needs a freeze that advances in one direction only, and slowly, so that the dissolved air and minerals which a growing ice crystal rejects get pushed ahead of the front into a part of the block you can throw away. Freeze from several faces at once and those impurities have nowhere to go: they meet in the middle, stay there as microscopic bubbles, and scatter light. That white core is the signature.

Manufacturers say so themselves. Samsung's support documentation attributes cloudy cubes to dissolved minerals and trapped air, notes that minerals such as calcium and magnesium are caught as the water solidifies, and states plainly that cloudy ice is completely normal and is not a sign of any malfunction. If you are troubleshooting a fault, there is no fault here to find.

Two details make a fridge ice maker worse than an ordinary tray rather than better: the cubes are small, so they have a lot of surface area for their mass and dilute fast, and the ice sits in an open bin in a freezer full of food, where it sublimates and picks up smells. Why is my ice cloudy has the full list of causes and how to read a cube to identify which one you have.

None of these produces clear ice. All four are still worth doing, because they change how the ice tastes and how fast it fails, which is a different and more achievable goal.

1. Fit the water filter, and replace it on schedule. A refrigerator filter removes particles and chlorine taste; it does not remove dissolved minerals, so it will not clear the ice. What it does fix is the stale, slightly chemical flavor that cheap ice puts into a drink, and that is worth more in a glass than clarity is. Most manufacturers specify a replacement interval of around six months.
2. Feed it lower-mineral water if your supply is hard. Samsung specifically suggests filtered or distilled water as a way to improve clarity, because fewer dissolved minerals means less mineral haze. On a plumbed-in fridge this is only practical with a whole-house softener or an under-sink system, which is a plumbing decision rather than an ice decision. On a portable countertop machine you fill by hand, it is free to try.
3. Descale the ice maker if the cubes have got smaller as well as duller. Scale builds up on the chilled surfaces and insulates them, so cycles run longer and produce thinner, hazier, more fragile ice. This is the one case where cloudy ice really is a maintenance symptom. How to clean a countertop ice maker is the descaling routine and the schedule it needs.
4. Empty and wash the bin, and stop storing ice open. Ice in an open bin sublimates at the surface and develops a white frost that looks like cloudiness but rinses off in a second, and it absorbs whatever is in the freezer. Dump the first batch after any long absence. How to store clear ice covers keeping good ice separate from appliance ice.

There is a fifth adjustment often suggested and we are not going to recommend it. Samsung notes that ice frozen at around minus 18 degrees Celsius freezes rapidly and traps more air, and that a slightly warmer setting of about minus 15 may let it freeze more slowly. That is a real effect, but minus 18 Celsius is 0 degrees Fahrenheit, which is the freezer temperature US food-safety guidance asks you to hold. Trading your freezer's food-safety setting for marginally less milky ice is a bad trade, and the improvement is small because the direction of the freeze is the dominant cause, not the rate.

Set expectations honestly before you spend an afternoon on this. Here is what each lever moves and what it does not.

The pattern is obvious once it is laid out: everything you can do to the appliance affects taste, cleanliness and cube integrity, and nothing you can do to the appliance affects clarity. Clarity is decided by the geometry of the freeze, and that is a property of the device, not of the water or the settings.

Both work by controlling the freeze rather than by purifying the water, which is why they succeed where filters and boiling routines do not.

Directional freezing in an insulated mold

An insulated shell leaves one face exposed to the cold and slows heat loss through the others, so the ice grows from that single face downward. The rejected air and minerals are pushed ahead of the front into the bottom of the mold, which becomes a cloudy sacrificial block you cut off or crush. The result is genuinely clear ice from ordinary tap water, in a freezer you already own, with nothing to plug in. How to make clear ice walks through the method - including a free cooler version that proves the mechanism in a day before you buy anything - and directional freezing explained covers why a growing crystal rejects impurities in the first place.

The trade is time and yield. A cycle is 18 to 24 hours for most cube molds and longer for some sphere molds, and the yield is two to four pieces per cycle. That is a planning commitment rather than a cost, and it is the single most common reason people give up on molds - not the ice, the forgetting. Best clear ice molds ranks them on yield, footprint and how reliably the ice releases intact.

A countertop machine built for clarity

This is the category that answers the original question properly: an ice maker that does make clear ice. It does it by reversing the fridge's approach. Instead of freezing a captive shot of water in a chilled mold, water is cascaded over a supercooled tray so the ice builds up in thin layers from flowing water - NewAir's description of its FrozenFall process is exactly that, forming ice in layers so air bubbles and impurities escape before they can be trapped. Anything not incorporated into the ice stays in the circulating water, which drains away or is recycled into the next batch.

The trade is money, counter space and noise, and the honest question is volume. If four cubes a day covers your drinking, a machine is a lot of appliance for the problem. If you host, or you want ice without having planned for it yesterday, it removes the planning problem entirely. Clear ice molds vs ice machines is that comparison in full, best clear ice makers is the machine list, and best countertop ice makers covers the whole countertop class.

Searches about ice makers and cocktail ice converge on nugget machines, because nugget machines are the most heavily marketed countertop ice appliances there are. They do not make clear ice and they are not trying to. Nugget ice is soft, chewable, compacted ice with an enormous surface area for its mass, which is exactly why it is excellent in a highball and wrong in an old fashioned: it chills fast and then keeps going, and the drink is thin by the third sip.

If you buy a nugget machine hoping for clarity you will have spent appliance money on the opposite of what you wanted. Clear ice vs nugget ice sets the two formats side by side, and why are nugget ice makers expensive covers what that money is actually buying. Buy a nugget machine because you want nugget ice, which is a perfectly good reason.

The other near-miss is a press. An aluminum ice ball press turns a block into a sphere by conduction in under a minute, which is genuinely impressive, but it reshapes ice you already froze - it cannot make a cloudy cube clear. Clarity comes from the freeze; the press only changes the shape afterwards. Ice ball press vs mold is that distinction in full.

Keep using it, and use it for the right jobs. Appliance ice is the correct ice for anything shaken, because shaken ice is strained out of the drink and dilution was the point of shaking in the first place - a cloudy cube shakes a daiquiri exactly as well as a clear one. It is also the right ice for chilling a glass, for a cooler, and for anything long and carbonated where you want fast chilling and are going to finish it quickly. Which drinks belong in that shaken group is its own question, and the most argued case is covered in shaken or stirred martini.

What appliance ice should not do is sit in a spirit-forward drink you intend to take half an hour over. Small cubes with trapped air have a lot of surface area and internal fracture lines, so they melt fast and crack when they meet liquid at room temperature. That is the entire argument for one big clear piece, and it only matters in the glass where the ice is part of the drink. Best ice for whiskey covers piece size for a neat or rocks pour.

So the practical setup in most houses is both: the ice maker keeps making bulk ice for shaking, chilling and hosting, and one mold in the back of the freezer produces the four pieces a week that actually need to be clear. Keep those two supplies separate, in a sealed bag, or the good ones end up in a cooler. And if you are hosting rather than making one drink, how much ice for a party has the quantities - that is the job your ice maker is genuinely good at.

One last thing worth knowing: the cloudy sacrificial block a directional mold produces is not waste. It is the best raw material you have for crushed ice, which is its own technique with its own uses. How to make crushed ice covers the Lewis bag route and what to do with the offcut.