Side by side Choose a chest freezer if Choose ice block molds if
The tub is full of tap water and it is nowhere near cold. Without a powered chiller, there are two routes to cold water: park a chest freezer in the garage, or freeze block ice in silicone molds and drop it in. This comparison covers chest freezer vs cold plunge chiller gear: two Igloo freezers and two Haldane ice mold sets, compared on capacity, setup, upkeep and what each asks of your space.
This comparison covers how each side gets water cold, what it costs to run and keep up, and the gear for each route. It does not compare health effects. Listings were collected 21 October 2026.
This article is informational and is not medical advice. Cold water triggers a gasp reflex and fast breathing, and your core temperature keeps falling after you get out (afterdrop). Never plunge alone, keep your head above water, and ask a clinician first if you have a heart condition, high blood pressure, or are pregnant. See our Medical Disclaimer and our cold plunge safety guide.
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Quick picks
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1
Igloo 5.0 Cu Ft Upright Deep Freezer Chest Chill Score 9.7/10Check price on AmazonA 5.0 cu ft upright deep freezer with a -10°F to 10°F range, an adjustable thermostat, a removable basket and a 1-year limited warranty.
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2
Igloo 5.0 Cu Ft. Upright Deep Freezer Chest Chill Score 9.6/10Check price on AmazonA 5.0 cu ft upright deep freezer in black with a -10°F to 10°F range, an adjustable thermostat, a removable basket and a 1-year limited warranty.
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3
Large Ice Cube Molds 4 Pack Chill Score 9.6/10Check price on AmazonA 4-pack of extra large silicone ice block molds that make 37 lb of block ice per batch, dishwasher safe and BPA-free.
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4
Haldane 5PC Extra Large Ice Block Mold 15LB Ice Chill Score 9.5/10Check price on AmazonA 5-pack of silicone ice block molds making 15 lb of ice bricks per batch, stated to melt in 7 to 9 hours at 71.6°F, dishwasher safe.
A 5.0 cu ft upright deep freezer with a -10°F to 10°F range, an adjustable thermostat, a removable basket and a 1-year limited warranty.
Pros & ConsViewHide
Pros
- 5.0 cu ft of storage in a compact footprint
- Adjustable thermostat from -10°F to 10°F
- Balanced hinge holds the lid from 45° to 90°
- 1-year limited warranty in writing
Cons
- No safety certification stated
- 53.8 lb to place, though it has front rollers
- The title calls it upright and chest both ways
- No wattage or plug type stated
A 5.0 cu ft upright deep freezer in black with a -10°F to 10°F range, an adjustable thermostat, a removable basket and a 1-year limited warranty.
Pros & ConsViewHide
Pros
- 5.0 cu ft of storage in a compact footprint
- Adjustable thermostat from -10°F to 10°F
- Balanced hinge holds the lid from 45° to 90°
- 1-year limited warranty in writing
Cons
- No safety certification stated
- 53.8 lb to place, though it has front rollers
- The title calls it upright and chest both ways
- No wattage or plug type stated
A 4-pack of extra large silicone ice block molds that make 37 lb of block ice per batch, dishwasher safe and BPA-free.
Pros & ConsViewHide
Pros
- 37 lb of block ice per batch, the most here
- Thickened food-grade silicone with reinforced edges
- Releases in seconds, no banging trays, per the maker
- Dishwasher safe and BPA-free
Cons
- No warranty term in the listing
- Needs a home freezer with real space for the molds
- No stated freeze time, unlike the 5-pack
- Slow-melt claim is the maker's, not a measured figure
A 5-pack of silicone ice block molds making 15 lb of ice bricks per batch, stated to melt in 7 to 9 hours at 71.6°F, dishwasher safe.
Pros & ConsViewHide
Pros
- Stated melt time: 7 to 9 hours at 71.6°F room temperature
- Stated 12-hour freeze time with 30-second demold wait
- Reinforced 4-corner design for a regular block shape
- Dishwasher safe and BPA-free
Cons
- Only 15 lb of ice per batch, the least here
- No warranty term in the listing
- Spec table quantity reads 2PC against a 5-pack title and bullets
- Freezer space needed for five molds
More to compare
Igloo 3.5 Cu Ft. Upright Deep Freezer Chest- Deep FreezerCheck price on Amazon
Midea 3.5 Cu.ft Chest FreezerCheck price on Amazon
FRIGIDAIRE EFRF5003-BLACK Chest Deep Freezer-Garage-ReadyCheck price on Amazon
Deep Freezer Chest 3.5 Cubic Feet Freezers with TemperatureCheck price on Amazon
4.0 Cu.Ft Chest FreezerCheck price on Amazon
Kismile 1.8 Cubic Feet Chest Freezer with Removable BasketCheck price on Amazon
Chest freezer vs cold plunge chiller gear at a glance
| Chest freezer | Ice block molds | |
|---|---|---|
| How it chills | Holds its interior at -10°F to 10°F; you freeze water inside it | You freeze water into blocks, then add them to the tub |
| Example capacity | 5.0 cu ft (both Igloo examples) | 37 lb per batch (4-pack), 15 lb per batch (5-pack) |
| Setup | A 25 x 21.25 x 33.13 in box on the floor; plug in, set the dial | Fill the molds, freeze 12 hours (stated), drop blocks in the tub |
| Power | Not stated in watts; freestanding, plugs into a standard outlet | None beyond your home freezer |
| Upkeep | Defrost through the drain plug; removable basket for storage | Dishwasher safe molds; refreeze before each session |
| Space | 53.8 lb, front rollers to move it | Fits most standard freezers; stackable |
Cost, space and power
A chest freezer is a one-time box: 5.0 cu ft, 53.8 lb, 25 in deep by 21.25 in wide by 33.13 in high, freestanding, with front rollers to place it and a drain plug for defrosting. Neither listing states wattage, so there is no running cost math to do from the listings. Give it floor space in a garage or basement where the dial can be reached.
Ice molds cost nothing to run beyond the freezer they already live in. The 4-pack example weighs 1.98 kg empty and the 5-pack 1.27 kg, and both are dishwasher safe, so the ongoing cost is your time and freezer space. See our cold plunge chillers roundup if you want a powered chiller instead, and our cold plunge vs ice bath comparison for the wider picture.
Upkeep
Freezer upkeep is defrosting. The Igloo examples include a drain plug for defrost water and a removable basket for storing the molds or food. A balanced hinge holds the lid open while you load.
Mold upkeep is freezing and cleaning. Fill, freeze for the stated 12 hours on the 5-pack, pull the blocks out, and dishwash the molds when they are dirty.
Gear for each route
These are scored on the Chill Score: performance, build, value, safety and warranty, where it applies, and warranty 5. None of these listings states a safety certification, so every product here scores zero on that criterion; the ranking comes from the other four.
| Product | Chill Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Igloo 5.0 cu ft White | 9.7 | 30 | 21 | 20 | n/a | 2 |
| Igloo 5.0 cu ft Black | 9.6 | 30 | 20 | 20 | n/a | 2 |
| Haldane 4pk 37lb Molds | 9.6 | 28 | 20 | 20 | n/a | 0 |
| Haldane 5pk 15lb Molds | 9.5 | 27 | 20 | 19 | n/a | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score. Safety counts only for powered gear or where the listing states safety features; where it does not apply, the score is taken over the remaining 90 points.
Choose a chest freezer if
- You have garage or basement floor space for a 25 x 21.25 x 33.13 in box.
- You want a 5.0 cu ft freezer for food as well as ice duty.
- You like an adjustable thermostat dial from -10°F to 10°F rather than guesswork.
- You want a 1-year limited warranty in writing.
Choose ice block molds if
- Your home freezer has real space for molds.
- You plunge a few times a week and can plan 12 hours ahead.
- You want no new appliance and no new outlet.
- You want dishwasher safe silicone you can also use for coolers and drinks.
Check Your Space First
- The Igloo examples measure 25 in deep, 21.25 in wide and 33.13 in high, and weigh 53.8 lb; the front rollers help with placement, and the unit is freestanding.
- Plug type and wattage are not stated on either freezer listing, so check the listing before you plan the outlet.
- The 4-pack mold example weighs 1.98 kg empty and the 5-pack 1.27 kg; the 4-pack is stated to fit most standard freezers, with a stackable design that saves space when not in use.
- Both mold examples are dishwasher safe and BPA-free, and the 5-pack states a 12-hour freeze time.
Common questions
Can a chest freezer chill my plunge water?
These two Igloo examples are food freezers with a -10°F to 10°F range and an adjustable thermostat; neither listing is sold or stated for plunge use. They hold their interior cold, which is how they freeze the ice that chills your tub.
How much ice do the molds make?
The 4-pack example makes 37 lb of block ice per batch and the 5-pack makes 15 lb, per the listings.
How long does the ice last in the tub?
The 5-pack example states its blocks take 7 to 9 hours to melt completely at 71.6°F room temperature. The 4-pack example says its slow-melting blocks keep a tub icy for hours without constant refills, per the maker.
Do I need a chiller if I use these molds?
Molds and a chiller solve the same problem differently. Molds need a freezer with space and 12 hours of lead time, per the listings, and produce a fixed amount of ice per batch. A chiller holds water at a set temperature continuously; a cold plunge chillers roundup covers those.
What temperature do the Igloo freezers reach?
The dial runs from -10°F to 10°F, per both listings. That is a food freezer range; the listings do not state plunge use or a water temperature.
Related: the cold plunge vs ice bath comparison, the best ice makers for ice baths, the best cold plunge chillers, and the chillers and filtration hub.
Back to all cold plunge reviews.
