{"publisher":"Lifespan Vault","publisherUrl":"https://lifespanvault.com","license":"CC-BY 4.0 with affiliate-link attribution","docs":"https://lifespanvault.com/agents","humanReadableUrl":"https://lifespanvault.com/compare/plunge-pro-vs-renu-cold-stoic-pure","a":{"slug":"plunge-pro","title":"Plunge - The Plunge","brand":"Plunge","url":"https://lifespanvault.com/cold-plunge/plunge-pro","affiliateUrl":"https://plunge.com/products/plunge","affiliateProgram":"plunge","price":{"min":8490,"max":8990,"currency":"USD","verifiedAt":"2026-09-30","notes":"$8,490 Cold Only, $8,990 with the heater, read in USD at variant level from the product endpoint of plunge.com, the maker's own store, on 2026-09-30. The product page on 2026-09-30 shows a $1,700 off promotion with no end date stated: $6,790 Cold Only against $8,490 labelled Comp. Value, and $7,290 with the heater."},"priceDisplay":"$8,490 to $8,990","positioning":"premium","editorScore":8.5,"hook":"The cold plunge that became the default - chillered, plug-and-play, with a 1 year warranty on both tub and chiller.","bestFor":"Buyers who want a chillered cold plunge as one purchase: a 110V plug-and-play tub with 1 year coverage on both tub and chiller.","skipIf":"You want sub-37°F temperatures, a 2-person tub, or premium cedar/metal aesthetics - see Renu Therapy or Morozko Forge."},"b":{"slug":"renu-cold-stoic-pure","title":"Renu Therapy - Cold Stoic 2.0","brand":"Renu Therapy","url":"https://lifespanvault.com/cold-plunge/renu-cold-stoic-pure","affiliateUrl":"https://renutherapy.pxf.io/c/7260827/3768064/48000?u=https%3A%2F%2Fwww.renutherapy.com%2Fproducts%2Fcold-stoic-2-0","affiliateProgram":"renu","price":{"min":9499,"max":10019,"currency":"USD","verifiedAt":"2026-09-30","notes":"$9,499 to $10,019 on renutherapy.com on 2026-09-30, read in USD from the product page and the Shopify product feed. This is the maker's own store: Renu Therapy makes the Cold Stoic 2.0 and sells it direct. None of the 48 variants carries a compare-at price and no sale banner runs. The spread is options only: all 6 tub colors and the California Redwood, Black Plastic and Brown Plastic breath decks add $0, Pacific Cedar adds $200, and the spa light adds $320 (the option group is labelled Spa Light $319.99). All 48 variants were in stock. Delivery is free curbside within the contiguous US."},"priceDisplay":"$9,499 to $10,019","positioning":"ultra-premium","editorScore":9.1,"hook":"A horizontal plunge that chills to a manufacturer-stated 39°F and holds it forever - the closest production unit to a custom onsen.","bestFor":"Premium-aesthetics buyers who want the longest warranty in the category and a tub that reads as architecture.","skipIf":"You're budget-constrained, want apartment-friendly install, or don't care about premium materials."},"sharedSpecs":[{"spec":"cooling","a":"chiller","b":"chiller"},{"spec":"minTempF","a":"37","b":"39"},{"spec":"capacity","a":"1-person","b":"1-person"},{"spec":"dimensions","a":"66 5/8″ × 31 1/2″ × 26″","b":"70″ × 33″ × 35″"},{"spec":"waterGallons","a":"105","b":"95"},{"spec":"weightLb","a":"144","b":"365"},{"spec":"power","a":"120V / 15A dedicated circuit","b":"120V / 15A"},{"spec":"construction","a":"acrylic and fiberglass","b":"plastic tub (Renu warranty class); breath deck in California Redwood, Pacific Cedar, Black Plastic or Brown Plastic"},{"spec":"tubWarrantyMonths","a":"12","b":"60"},{"spec":"chillerWarrantyMonths","a":"12","b":"12"}],"aOnlySpecs":[],"bOnlySpecs":[],"verdict":{"winnerSlug":"renu-cold-stoic-pure","winnerName":"Renu Therapy Cold Stoic 2.0","reason":"Renu Therapy Cold Stoic 2.0 edges out on editor score (9.1 vs 8.5). Per-buyer recommendation may still favor the alternative."},"perBuyer":{"pickA":{"when":"Buyers who want a chillered cold plunge as one purchase: a 110V plug-and-play tub with 1 year coverage on both tub and chiller.","skipIf":"You want sub-37°F temperatures, a 2-person tub, or premium cedar/metal aesthetics - see Renu Therapy or Morozko Forge."},"pickB":{"when":"Premium-aesthetics buyers who want the longest warranty in the category and a tub that reads as architecture.","skipIf":"You're budget-constrained, want apartment-friendly install, or don't care about premium materials."}}}