Best ValueRank #8 in Cold Plunges
Diveblast Cold Plunge Tub + Chiller Kit
by Diveblast
Score
The only plug-in chilled cold plunge we found with an Amazon buy path: a soft-sided tub, a chiller (2/3 HP per the listing title and Diveblast's feature list), a 1500 GPH pump, a filter and hoses in one kit. Diveblast states it cools water to 39 F and fits users up to 6 ft 7 in. On Amazon it is sold by a third-party seller at Diveblast's own price ($999.97 on diveblast.com, 2026-10-21). 4.3 on Amazon from 46 ratings, a thin record.
- Buyers who want chilled water without ice for about a tenth of a premium plunge
- Plungers who can live with a soft-sided tub
- You want an insulated hard tub with ozone sanitation (The Plunge, Renu)
- You want a long Amazon review record before you buy
Strengths
- ↑Chiller, pump, filter and tub in one kit
- ↑Diveblast states cooling down to 39 F
- ↑Two-year warranty on the kit (Diveblast-stated)
- ↑Far cheaper than the brand-direct chilled tubs on this page
Weaknesses
- ↓Soft-sided fabric tub, not an insulated hard shell
- ↓Only 46 Amazon ratings so far
- ↓Diveblast's own page gives conflicting chiller ratings (2/3 HP and 3/4 HP)
- ↓Sold on Amazon by a third-party seller
Full specs
- Type
- Tub + chiller kit
- Chiller
- 2/3 HP (listing title)
- Min Temp
- 39 F (Diveblast-stated)
- Pump
- 1500 GPH
- Fits
- Users up to 6 ft 7 in (Diveblast-stated)
- Warranty
- 2 years (Diveblast-stated)
Common questions
Does the Diveblast kit need ice?
No. The kit includes a chiller, pump and filter; Diveblast states it cools the water to 39 F.
Is the Diveblast kit ETL or UL listed?
We found no ETL or UL statement from Diveblast, so we make no such claim. Check the electrical requirements before you install it.
Sources & references
Full buying guide
Best Cold Plunges for Home Use
Read the full ranking →Other cold plunges we rate
Ranked alternatives from the same category, with our score and the current price.
The gateway plunge. Inflatable, budget-priced, no chiller. Treat it as a ritual-starter, not a forever tool. Needs ozone and ice management. A stated exception: 4.2 on Amazon from 524 ratings, kept as the labelled inflatable starter because it is sold by Amazon.com and 200+ buyers a month pick it.
The ice-and-go alternative. No chiller, so you buy or make ice. Good insulation keeps a 3-bag ice dump at 45°F for 24 hours. 3.6 on Amazon from 9 ratings as of 2026-10-21, too few to score; it stays as Ice Barrel's current flagship, sold by the brand, and is re-checked 2026-11-21.
The insulated middle step between the inflatable Cold Pod and the hard-shell barrels. Lifepro's thermal-insulated tub comes with an all-weather lid, pump, legs and a storage bag, so it holds cold longer than an uninsulated inflatable while still packing away. There is no chiller: you add ice. Sold by Amazon.com; 4.4 on Amazon from 154 ratings.
The insulated barrel at $600 less than the Ice Barrel 500, with chiller ports built in so you can start with ice and add a chiller later. Ice Barrel states 77 gallons, polyurethane foam insulation through the barrel and lid, and a fit for most body sizes up to 6 ft. Sold by Ice Barrel's own store. 4.4 on Amazon from only 10 ratings, too few to say much yet.
Plunge's original tub — sold for a while as the Evolve XL, now simply The Plunge. Ships with the Pro Chiller Gen 2, a 20-micron filter plus ozone, a 39°F floor and about 105 gallons. Plug-and-play means no chlorine, no ice hauling, just a cold tub waiting.