SIDE BY SIDE
See prices, running costs, specifications and trade-offs side by side. Choose two to four products of the same type.
Chilled plunge tub
Cold Plunge Pro (base model, SKU PLUNGEPROS): 150-gallon hard-shell tub with a 316 stainless basin, not the Pro Apex or Pro Titan
$14,599US price, checkedStainless hard-shell tub with a 1 HP chiller that sets as low as 28°F
Check price at Sun Home for Sun Home Cold Plunge Pro Full review →
Our hot-and-cold pick
Meterous Black finish, California Redwood deck, included basic tub lid (SKU AS-CS30-BK-RD)
$11,399US price, checkedHot-and-cold plunge tub, 37 to 104°F, with published power use
Check price at Renu Therapy for Renu Therapy Cold Stoic 3.0 Full review →| Criterion | Sun Home Cold Plunge Pro | Renu Therapy Cold Stoic 3.0 |
|---|---|---|
| US price | $14,599Checked Oct 13, 2026 · Price details in the review | $11,399Checked Oct 13, 2026 · Price details in the review |
| Three-year ownership estimate | $15,873.01 Incomplete known subtotal. Not included: installation, other annual costs, energy use. | $12,013.95 Incomplete known subtotal. Electricity assumption: $0.18/kWh. Not included: installation, annual consumables, other annual costs. |
| Choose if | You want very cold plunges in a stainless hard-shell tub without plumbing, and you can give it a dedicated 15 A GFCI circuit. | You want cold plunges and warm soaks at home from one tub, you can give it a dedicated 120 V circuit, and you can handle curbside delivery of a 365 lb tub. |
| Main trade-off | At $14,599, you get one year of coverage, and labor and shipping are covered only for the first 90 days. | The chiller gets only 1 year of coverage (other covered components get 5 years), returns cost 5% plus shipping, and a fresh fill cools slowly at the manual's rate. |
| Key specifications |
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| Exact variant | Cold Plunge Pro (base model, SKU PLUNGEPROS): 150-gallon hard-shell tub with a 316 stainless basin, not the Pro Apex or Pro Titan | Meterous Black finish, California Redwood deck, included basic tub lid (SKU AS-CS30-BK-RD) |
| Dimensions | The assembled tub measures 78.7 × 33.5 × 34.2 in (length, width, height). Inside, the spec sheet gives 47.4 × 28.7 in, with 27.5 in of depth. It holds 150 gallons and weighs 400 lb dry. Sun Home doesn't give a filled weight, but 150 gallons of water alone weighs about 1,250 lb. It ships in an 84 × 37 × 42 in crate that weighs 636 lb. The spec card rates it for one person. | The body measures 70 L × 33 W × 35 H in. It's 33 in wide at the base and top and about 35.5 in at the widest point of the contoured sides. The tub interior is 40 L × 25 W × 31 D in. The tub weighs 365 lb dry and about 1,155 lb filled with 95 gallons. The user manual gives about 1,165 lb filled. The cut sheet asks for 15 in of clearance at the small vent and 27 in at the large vent. It also asks for 1 to 2 in on the long side for the cord. |
| Installation | There's no plumbing: you fill it with a hose. It's rated 120 V and 12 A. The 8 ft cord can't be removed and plugs into a standard NEMA 5-15 outlet. That outlet must sit on a dedicated 15 A GFCI circuit, and Sun Home says no hardwiring is needed. The spec sheet asks for 3 ft of clearance at the vent end and 1 ft on each side. The head end can sit against a wall, and the whole setup needs about 9.5 × 5 ft. It's rated for indoor and outdoor use on a surface that can carry the filled tub. Sun Home says not to run it outdoors below freezing or leave it out through freezing weather. The first cool-down takes several hours, and the lid shortens it. | Renu recommends a dedicated 120 V, 15 A circuit. The user manual adds that the circuit shouldn't be shared with other devices and calls for grounded 110 V/120 V power. The unit has a GFCI plug. The product page lists a 12 ft cord, but the cut sheet shows both a 12 ft GFCI cord and a 9 ft standard 3-prong cord. No plumbing connection is described. The manual says to fill the tub with a hose to 6 to 8 in below the top and to place it on a level surface in a water-resistant area. It doesn't give a floor-load rating, and the filled tub weighs about 1,155 lb. Delivery is free curbside within the contiguous US, and you have to move the tub off the pallet yourself. It ships in 3 to 5 weeks. |
| Materials | The basin is 316-grade stainless steel inside a hard shell with injected insulation. Sun Home calls it marine-grade construction. An insulated lid, a headrest and stair mats are included. It also has a touchscreen panel and interior lights with a color remote. Sun Home doesn't name the shell material or the insulation type on the pages reviewed. | Renu doesn't state the shell material, though its warranty page groups the Cold Stoic 3.0 with its plastic tubs. The perimeter has 4 in of HD foam insulation. The version priced here has a California Redwood breath deck, and Pacific Cedar and four composite decks are options. Renu also lists a basic tub lid and a matching step stool, and says the tub is handcrafted in Southern California. |
| Warranty | Sun Home gives the Cold Plunge Pro a 1-year residential limited warranty against manufacturing defects. It covers the original buyer only. It starts at purchase or delivery, whichever is later, as long as delivery is within six months of purchase. Labor and shipping are covered for the first 90 days from delivery. After that, you pay both, and Sun Home chooses whether to repair or replace. Wear and tear, abuse, improper installation, electrical problems and use outside the published guidelines aren't covered. The product page shows a "1+ Year Warranty" badge and a site-wide "Limited Lifetime Warranty On Most Models" banner. That lifetime coverage is for cabinetry and heaters on some saunas, and the warranty page lists the Pro at one year. Extended warranties are sold separately, but no price is given. Commercial buyers get separate terms at the point of sale. | Covered components get a 5-year limited warranty from the delivery date. The water chiller is the exception, at 1 year. The user manual dates coverage from shipment instead. You can add a 4-year extended chiller warranty, for 5 years in total, if you buy it within 364 days of shipment. Its price isn't stated. Coverage is for non-commercial home use in the contiguous US by the original purchaser. Exclusions include water leaks, poor water chemistry, neglected filter care, freezing conditions, power outages, low water flow and misuse. Renu also takes no responsibility for the natural wood of Redwood and Cedar decks. The user manual says the warranty doesn't cover the water filter or the filter housing O-ring. You do most repairs or part replacements yourself. Renu covers parts for covered repairs, and you pay shipping and removal costs. Renu pays approved-provider labor at up to $50 per hour, for a maximum of 2 hours. Rural travel fees aren't covered. |
| Returns | You can return it within 30 days of delivery only if it's unused and still in its original, unopened packaging. Sun Home won't take back an uncrated, assembled or used cold plunge. It keeps a 25% restocking fee and charges shipping both ways, even on a free-shipping order. Returns need approval through Sun Home's returns portal first. Refunds are issued within 21 days of receiving the return, after inspection. Every cancellation costs 3% per product, even within 24 hours of ordering. After 24 hours, a 25% restocking fee is added, and you may pay roundtrip shipping. On a $14,599 tub, the restocking fee alone is $3,649.75. | You can return a new cold plunge from a domestic order for any reason within 45 days of delivery. It has to arrive back in good condition, and you pay a 5% restocking fee and shipping costs. Refunds process 3 to 10 business days after receipt. Canceling before shipment costs 5%, and shipped orders can't be canceled. Refurbished, international and bulk (3 or more units) sales are final. |
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These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.