Best cold plunge
Each pick below follows a stated rule applied to the specs brands publish. Nothing here depends on opinion or on which brands pay us. When the data changes, the picks change with it.
Coldest overall: Sun Home Saunas Cold Plunge Pro
Rule: The lowest rated water temperature. Ties go to the lower price.
| Rank | Model | Why it ranks here | Price |
|---|---|---|---|
| Pick | Sun Home Saunas Cold Plunge Pro | Rated to 28°F, 1 HP chiller, 150 gal | $13,999 |
| Runner-up 1 | Sun Home Saunas Cold Plunge (Horizontal) | Rated to 32°F, 1 HP chiller, 128 gal | $3,999 |
| Runner-up 2 | Polar Monkeys ONE | Rated to 32°F, 0.8 HP chiller, 90 gal | $6,290 |
Coldest under $5,000: Sun Home Saunas Cold Plunge (Horizontal)
Rule: The lowest rated water temperature among systems priced under $5,000. Ties go to the lower price.
| Rank | Model | Why it ranks here | Price |
|---|---|---|---|
| Pick | Sun Home Saunas Cold Plunge (Horizontal) | Rated to 32°F, 1 HP chiller, 128 gal | $3,999 |
| Runner-up 1 | Plunge Chill 1HP Chiller + Tub (Plus) | Rated to 36°F, 1 HP chiller, 120 gal | $1,399 |
| Runner-up 2 | Plunge Chill 1HP Chiller + Tub (Pro) | Rated to 36°F, 1 HP chiller, 200 gal | $1,499 |
Lowest price rated to 37°F or colder: Plunge Chill 1HP Chiller + Tub (Plus)
Rule: The lowest price among chiller systems rated to reach 37°F or colder.
| Rank | Model | Why it ranks here | Price |
|---|---|---|---|
| Pick | Plunge Chill 1HP Chiller + Tub (Plus) | Rated to 36°F, 1 HP chiller, 120 gal | $1,399 |
| Runner-up 1 | Plunge Chill 1HP Chiller + Tub (Pro) | Rated to 36°F, 1 HP chiller, 200 gal | $1,499 |
| Runner-up 2 | The Cold Life Ultimate Lite (Inflatable) | Rated to 37°F, 90 gal | $3,499 |
Plunge Chill rates its 1 HP chiller for up to 110 gallons, and some of its bundles come with larger tubs. See the chiller comparison before buying.
Most chiller power for its water: Polar Monkeys ONE
Rule: The fewest gallons of tub capacity per chiller horsepower. Only systems that publish both numbers qualify.
| Rank | Model | Why it ranks here | Price |
|---|---|---|---|
| Pick | Polar Monkeys ONE | 113 gal per HP (90 gal, 0.8 HP) | $6,290 |
| Runner-up 1 | Plunge Chill 1HP Chiller + Tub (Plus) | 120 gal per HP (120 gal, 1 HP) | $1,399 |
| Runner-up 2 | Sun Home Saunas Cold Plunge (Horizontal) | 128 gal per HP (128 gal, 1 HP) | $3,999 |
Best value for hot and cold in one tub: Sun Home Saunas Cold Plunge (Horizontal)
Rule: The lowest price among systems that heat as well as cool, with heating included in the listed price (not an optional heater or upgrade).
| Rank | Model | Why it ranks here | Price |
|---|---|---|---|
| Pick | Sun Home Saunas Cold Plunge (Horizontal) | 32°F to 104°F | $3,999 |
| Runner-up 1 | Salus Saunas Dynamic Cold Plunge | 37°F to 85°F | $8,495 |
| Runner-up 2 | Polar Monkeys Brainpod 2.0 | 32°F to 107°F | $10,990 |
Best for a standard outlet: Desert Plunge Exclusive
Rule: The lowest price among systems that run on 120V without the brand requiring a dedicated circuit.
| Rank | Model | Why it ranks here | Price |
|---|---|---|---|
| Pick | Desert Plunge Exclusive | 110V standard outlet, 6.5A; GFCI adapter included; rated to 39°F | $2,898 |
| Runner-up 1 | Desert Plunge Wide Grizzly 450 | 110V standard outlet, 6.5A; GFCI adapter included; rated to 39°F | $3,048 |
| Runner-up 2 | The Cold Life Ultimate Lite (Inflatable) | 110–120V, 3.9A, 450W; standard GFCI outlet; rated to 37°F | $3,499 |
These picks compare 17 chiller systems priced from $899 to $15,690. Specs a brand doesn't publish can't qualify a model for a category, so a missing number can leave a good product out. See every model in the cold plunge finder or read how we rate.