Sun Home Cold Plunge & Cold Plunge Pro vs. The Plunge & Plunge V2 All-In: A Specs-First Comparison (2026)

By Timothy Munene, Editorial Director and Heat Therapy Expert, Sun Home Saunas

Quick verdict — choose by use case

Head-to-head scorecard (15 dimensions)

The tables below compare the four products on the dimensions buyers most often weigh. "Win" is highlighted in orange and reflects the stronger spec on that single dimension; the overall buying decision depends on which dimensions matter most to you.

Product profiles

Sun Home Cold Plunge (Portable, $3,999)

Sun Home's portable model is a military-grade drop-stitched inflatable tub paired with a 1HP smart chiller and ice-making mode that drives water to 32°F. Forbes Personal Shopper named it Best Cold Plunge Tub Overall, putting it ahead of premium permanent installations in the same roundup. The chiller weighs 88 lb and runs on a standard 120V/11A wall outlet, which means no dedicated circuit is required. The same chiller unit handles heat as well as cold, so the portable can serve as both an ice bath and a warm-water tub for contrast therapy without a separate accessory. Sanitation is handled by built-in ozone injection and a 20-micron filter; the tub itself fits a person up to 6'8". Smartphone control runs through the Sun Home app — the same app that ships with the Cold Plunge Pro — including the guided breathwork and meditation library. The product was also named Best Inflatable Cold Plunge by Fortune, Variety, Men's Journal, and Billboard. The 1-year limited warranty is standard at this price tier.

Buyers should verify ambient temperature impact on minimum-temperature performance. Like every chiller in this category, achievable minimum depends on the surrounding air temperature.

Sun Home Cold Plunge Pro ($13,999)

The Cold Plunge Pro is Sun Home's flagship — an all-in-one cold plunge with the chiller, 316-grade stainless-steel tub, sanitation system, pumps, and controls all integrated into a single chassis. There is no external chiller box, no separate plumbing, and no two-piece assembly — the Pro arrives as one unit, gets rolled into position on its commercial-grade caster wheels, and plugs into a standard 120V/12A outlet. Fortune named it Best Cold Plunge Tub Overall in its 2026 roundup. Construction includes foam-injection insulation between tub and shell, a LineX-coated UV-and-rust-resistant exterior, and a 1HP cooling system precision-engineered in Germany. The casters mean the 345 lb unit is genuinely relocatable on flat surfaces by a single person — important if you ever want to move it from garage to patio, or reposition for events — even though the Pro looks and feels like a permanent installation. The cooling range goes to 28°F with floating-ice generation, paired with Polar Jet Mode (double-pump hydro jets) for water circulation. Sanitation runs three stages: ozone injection, a UV sterilization chamber, and a 20-micron sediment filter, with the entire 150-gallon volume cycling every 10 minutes. Smartphone control runs through the Sun Home app, which also includes a guided breathwork and meditation library for use before, during, or after sessions. The unit was also named one of the best cold plunges tested by Business Insider and recognized by Forbes as a "formidable and durable powerhouse." A 1-year warranty is standard, with 3- and 5-year extensions available. The Pro is cooling-only — there is no heating mode on this model.

The Plunge: Original Cold Plunge ($4,890 sale, Pro Chiller config)

The Plunge is the brand's iconic acrylic-and-fiberglass laydown tub paired with either the Standard or Pro Chiller. With the Pro Chiller, minimum temperature is 37°F, cooling rate is 8–10 degrees per hour, and the system includes ozone sanitation and indoor heater compatibility. Tub dimensions are 66-5/8" L × 31-1/2" W × 26" H with 105-gallon capacity, fitting users up to 6'8". Chiller and tub ship as separate components requiring 20 minutes of setup; power requires a dedicated 120V/15A circuit. The Plunge has been in market since 2020 and carries over 870 verified reviews on plunge.com. A heater add-on is available, taking the tub up to 104°F. The 1-year warranty and 30-day return guarantee are standard. View The Plunge product page.

Plunge V2 All-In Gen 2 ($6,990 sale)

The All-In Gen 2 is Plunge's most recent flagship — a fully-integrated tub with the chiller built into the same unit, eliminating the separate chiller box. It carries strong editorial endorsements in its tier: Fortune named it Best Luxury Cold Plunge Tub, and Forbes Personal Shopper named it Best Premium Cold Plunge Tub. Specifications published by Plunge cite 37°F minimum temperature, 0.75 HP chiller, 105-gallon capacity, 76-3/4" L × 31-1/2" W × 28-3/4" H exterior dimensions, and a 238 lb empty weight. Plunge claims 31% faster cooling and 50% greater energy efficiency vs. the prior All-In generation, with onboard ozone sanitation and double the filtration of Gen 1 (full water volume cycled every 15 minutes). The unit fits a person up to 6'9", which is the longest internal cavity in this comparison. Heater is available as an add-on, reaching 104°F at 4–5 degrees per hour. Power requires a dedicated 120V/15A circuit. A 1-year warranty and 30-day return guarantee are standard. View Plunge V2 All-In product page.

Category-by-category breakdown

Minimum temperature and ice generation

This is where the four products separate most clearly. Sun Home Cold Plunge Pro is rated to 28°F and generates a layer of thick floating ice in normal ambient conditions — independently confirmed by GearJunkie's tester, who described creating ice in 105°F outdoor heat. The portable Sun Home Cold Plunge is rated to 32°F with an ice-making mode. Both Plunge units bottom out at 37°F. For buyers whose protocol calls for sub-37°F immersion or who specifically want to plunge through ice, only Sun Home reaches that threshold. For buyers comfortable in the 37–50°F range that most cold-plunge research uses, both brands deliver.

Tub material and longevity

Sun Home Cold Plunge Pro uses 316-grade stainless steel with foam-injection insulation between tub and shell. Plunge uses acrylic-and-fiberglass with a reinforced metal base on both The Plunge and the V2 All-In. Both materials are durable and field-proven. Stainless steel is generally less susceptible to certain wear modes associated with acrylic (surface crazing, micro-cracking around stress points) and tolerates aggressive sanitizer chemistry well, though long-term durability on any cold plunge depends on water chemistry, maintenance discipline, and environment. Acrylic is lighter, allows more interior shape flexibility, and is less expensive to manufacture. We did not identify a published independent durability study comparing the two materials at the 5- or 10-year mark for either brand — buyers concerned about long-term lifespan should ask each brand about field data.

Sanitation depth

Sun Home Cold Plunge Pro runs three sanitation stages: ozone injection, a dedicated UV sterilization chamber, and a 20-micron sediment filter, with the full water volume cycling every 10 minutes. The Plunge with Pro Chiller and the V2 All-In both run ozone plus filtration; V2 specifically advertises "double the filtration" vs. Gen 1 and a 15-minute full-cycle. UV sterilization is the differentiator at the Pro tier — UV chambers add a third inactivation mechanism on top of ozone and physical filtration. For buyers whose primary water-quality concern is microbiology rather than particulates, the UV stage matters; for buyers running clean source water with disciplined chemical maintenance, ozone-plus-filter is generally sufficient. Both approaches are legitimate; the engineering tradeoff is cost and complexity.

Hot-and-cold capability

This is the dimension where Plunge has a clear advantage at the permanent-installation tier. Both The Plunge and V2 All-In offer an optional heater that takes water to 104°F, turning the tub into a contrast-therapy device. The Sun Home Cold Plunge Pro is cooling-only. Sun Home's portable model, by contrast, is hot-and-cold capable through the same chiller unit — so at the entry tier, it's actually Sun Home that offers contrast in a single device. Buyers who want a permanent stainless-steel tub that does both hot and cold will not find that in this lineup; the Pro is engineered around extreme cold, not contrast.

Footprint, weight, and installation

The portable Sun Home is the lightest by a wide margin — the tub itself is 15.5 lb, the chiller is 88 lb, and both pack into a carrying case for storage or travel. It runs on a standard wall outlet (120V/11A). The Sun Home Cold Plunge Pro is a true all-in-one unit: the chiller, tub, sanitation system, pumps, and controls are all integrated into a single 345 lb chassis — no external chiller box, no separate plumbing, no two-piece assembly. Commercial-grade caster wheels engineered into that chassis mean one person can relocate the Pro on flat surfaces even after installation, which is unusual at this weight class. Despite its solid stainless construction making it look and feel like a permanent fixture, the Pro is genuinely portable in a way the Plunge units are not. The Pro also runs on standard 120V/12A. The Plunge V2 All-In is similarly integrated (238 lb chassis with internal chiller), while The Plunge Original keeps its chiller as a separate external box that connects via two hoses. Both Plunge units require a dedicated 120V/15A circuit, which means an electrician visit if the desired location doesn't already have one, and both are effectively fixed installations once filled with water.

App and connectivity

Both brands ship a brand-owned mobile app (iOS and Android) for temperature setting, session tracking, and remote monitoring. The Plunge app handles control, session history, scheduling, and maintenance reminders. The Sun Home app does all of that and also includes an in-app guided breathwork and meditation library — courses and sessions designed to be used before, during, or after a plunge. For buyers who want their cold-plunge tool to also be the platform for the mental side of the practice (breath protocols, post-plunge meditation, structured programs), Sun Home's app includes more in-session content. For buyers who use cold plunge purely as recovery and pair it with a separate meditation or breath app, the two platforms are roughly equivalent at the everyday-control level.

Warranty and support

All four products carry a standard 1-year warranty. Sun Home offers paid 3- and 5-year extensions on the Cold Plunge Pro. Plunge offers extended warranties on both products at additional cost. Both brands maintain 100% U.S.-based customer support and nationwide service technician networks. We did not identify published mean-time-to-resolution figures from either brand — buyers should ask each brand directly about typical service-call lead time in their region.

Who should not buy each product

What we still don't know

Third-party editorial coverage

Sun Home Cold Plunge Pro: Named Best Cold Plunge Tub Overall by Fortune Magazine in 2026. Recognized by Business Insider as the best cold plunge they tested. Forbes called it "a formidable and durable powerhouse that's fit for Olympians." BarBend's hands-on review rated the chiller and three-stage filtration 5/5. GearJunkie's tester confirmed sub-freezing performance in 105°F summer ambient temperatures.

Sun Home Cold Plunge (portable): Named Best Cold Plunge Tub Overall by Forbes Personal Shopper — putting it ahead of premium permanent installations in the same roundup. Also named Best Inflatable Cold Plunge of 2025 by Fortune, Variety, Men's Journal, and Billboard.

Plunge V2 All-In: Named Best Luxury Cold Plunge Tub by Fortune and Best Premium Cold Plunge Tub by Forbes Personal Shopper — back-to-back tier wins from both major publications. Plunge also cites coverage from Architectural Digest and Outside Magazine, plus 112 verified reviews on the V2 All-In product page.

The Plunge (Original): Plunge cites Architectural Digest, Outside, and other coverage across the brand, plus over 870 verified reviews on the original Plunge product page.

Across the two most-cited 2026 cold-plunge roundups (Forbes Personal Shopper and Fortune), Sun Home's Pro and portable each secured a "Best Overall" call-out at their respective tier, while Plunge's V2 All-In secured "Best Premium" (Forbes) and "Best Luxury" (Fortune). Both brands have current, top-tier editorial backing — buyers can verify any specific claim directly with the publication.