Plunge - The Plunge
The chiller-equipped flagship most buyers should default to.
The cold plunge that became the default - chillered, plug-and-play, and the only one with a real service network.
Price: $4,990–$6,990 · Verified: 2026-06-19 · Editor score: 8.5/10 (how we rank)
The cold plunge that became the default - chillered, plug-and-play, and the only one with a real service network.
Plunge basically built the home cold-plunge market into a category, and The Plunge is what most buyers actually want: a 110V plug-in tub that hits 37°F and holds it forever, with UV + 20-micron filtration that keeps the water clear for weeks instead of days.
Nothing about it is exotic. The aesthetic is fiberglass-utilitarian, not cedar-luxury. The temperature floor (~37°F) is warmer than a Renu or Morozko. But for the buyer who just wants to plunge daily without managing ice, calling an electrician, or babysitting water chemistry, this is the safest pick on the market.
What tips it: the largest installed base in the category means parts, service, and reseller liquidity if you ever want to sell. Most other brands can't match that.
Buyers who want the safest single-purchase cold plunge - plug-and-play, large service network, and category-leading installed base.
You want sub-37°F temperatures, a 2-person tub, or premium cedar/metal aesthetics - see Renu Therapy or Morozko Forge.
Pros
- 110V plug-and-play - no electrician required
- Integrated UV-C + 20-micron filtration keeps water clear for weeks
- 24-month warranty on both tub and chiller
- Largest installed base in the category - strong service network
- Ships pre-assembled and water-ready
Cons
- Minimum temp 37°F - colder competitors exist (Morozko, Brass Monkey)
- Single-person capacity only
- Fiberglass aesthetic less premium than cedar / metal alternatives
- House affiliate program pays ~5% - modest vs Ice Barrel's ~10%
Specifications
Most often compared with
Where this fits
Plunge The Plunge cross-shops across several editorial surfaces on this site: the full brand catalog, the buyer-intent tags this item carries, the price band it qualifies for, the execution playbooks that use it and the in-depth guides for its category.
Plunge The Plunge - buyer FAQ
How cold does The Plunge actually get?
The chiller holds 37°F reliably year-round. That's warmer than a Renu Therapy or Morozko Forge (which both hit sub-37°F), but it's the cold-therapy threshold most research protocols use (Søberg method, Andrew Huberman's recommended 50-59°F range, etc). For 95% of users, 37°F is the right temperature - colder is novelty, not added benefit.
Do I need an electrician to install it?
No - The Plunge is 110V and plugs into any standard outlet. That's the key reason it became the category default. Renu Therapy, Morozko, and most competitors require 220V which means hiring an electrician (~$500-2,000 added cost) before you can even use the tub.
How often do I need to change the water?
Most owners replace the water every 4-6 weeks. The integrated UV-C + 20-micron filtration keeps it clear longer than ice-bath setups (which typically need replacement every 1-2 weeks). The chiller runs continuously, so the water stays at temperature between sessions - you don't reheat or refill before each plunge.
How does The Plunge compare to Ice Barrel?
The Plunge is the chiller-equipped flagship at ~$5-7K; Ice Barrel is the ice-bath-only value tier at ~$1.2K. Different products. If you want plug-and-play with no ice management, Plunge is the only credible single-purchase. If you're willing to manage ice manually and save thousands, Ice Barrel is the entry point.
What's the warranty + service network like?
24-month warranty on both tub and chiller. Plunge has the largest installed base in the category, which means parts availability, accessible customer support, and reseller liquidity if you ever sell. Most competitors can't match this - if a Morozko chiller fails in year 4, finding service is harder.
How much electricity does it use?
Roughly $20-40/month in electricity depending on your local rates and ambient temperature. The chiller is most efficient in cooler climates (less work to maintain 37°F). Insulated covers (sold separately) cut power usage by 30-40%.