Nugget Ice vs Bullet Ice

Search this question and almost every result is published by a company that sells one of the two answers. That is not a conspiracy, it is just who writes about appliances, but it does mean the comparison usually arrives pre-loaded. This page is the mechanical version, with the manufacturers' own machine specifications attached so you can see what each mechanism actually costs to run.

How nugget ice is made

1. Water is pumped into a vertical cylinder whose wall is chilled by the refrigeration system.
2. A thin layer of ice crystals forms on the inside of that wall. This is flake ice, and on its own it is slush.
3. A motor-driven auger turns inside the cylinder, scraping the flakes off the wall and driving them upward.
4. At the top, the flakes are forced through a die that compresses them into a solid pellet, which breaks off and drops into the bin.

The chewability comes from step four. Compressed flakes are not solid ice: there is air between them, the structure is soft, and your teeth go through it. That same trapped air and enormous internal surface area is why nugget ice melts and dilutes quickly.

It also explains the price. That auger is a moving mechanical assembly operating inside a refrigerated cylinder, and it is the single biggest reason a nugget machine costs multiples of a bullet machine. Longer version: why nugget ice makers cost so much.

How bullet ice is made

1. A set of chilled metal prongs lowers into a tray of water.
2. Ice forms on the outside of each prong. Because the prong is cold and the water is not, the ice grows as a cylinder around it.
3. After a set time the prongs are briefly warmed, releasing the ice.
4. The hollow cylinders drop into the bin and the cycle repeats.

No auger, no compression, nothing to scrape. It is a much simpler machine, which is why it is faster and cheaper. The ice is solid and hard, and the hollow center is a by-product of forming around a prong rather than a design goal.

Side by side

The machines, on published specs

The Frigidaire pair is the fairest comparison available because it is one manufacturer with one documentation standard. Both are rated at 20 kg per 24 hours. The nugget machine draws 185 W and the bullet machine draws 200 W.

That is worth pausing on, because it contradicts the common assumption that the more complicated mechanism must cost more to run. On these two machines, the nugget one is the more efficient of the pair. The bullet machine's advantage is purchase price and simplicity, not electricity.

Which should you buy

Buy nugget if

• You want ice you can chew. This is the only reason that matters and it is reason enough.
• The ice goes into iced tea, soda, water or sports bottles, where fast chilling is a feature and dilution is not a problem.
• You are replicating the ice from a drive-through. That is nugget ice, and the sonic-ice question is answered on its own page.

Buy bullet if

• You need volume for coolers, camping or entertaining and the shape is irrelevant.
• Budget is the binding constraint. A bullet machine gets you the most ice per dollar of purchase price by a wide margin.
• You are filling a cooler rather than a glass.

Buy neither if

You want ice that keeps. Neither type of countertop machine refrigerates its bin, so on both of them ice melts and the meltwater recirculates. That is covered properly on do countertop ice makers keep ice frozen, and it is the single most common source of disappointment with this entire category.

Pebble, crushed, chewblet and sonic

Four more words for roughly one thing. Pebble ice and chewblet are trade and colloquial names for nugget ice. Sonic ice is nugget ice from a particular drive-through. Crushed ice is genuinely different: it is solid ice smashed into sharp irregular shards, not compressed flakes, and it feels completely different in the mouth. A blender or a Lewis bag makes crushed ice. Only an auger makes nugget.