SIDE BY SIDE
See prices, running costs, specifications and trade-offs side by side. Choose two to four products of the same type.
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 →
Our cheapest chilled pick
Horizontal (2-Person), SKU POLAR623: inflatable lie-down tub with a 1 HP chiller that cools and heats
$4,099US price, checkedInflatable lie-down tub with a 1 HP chiller that cools and heats, 32 to 104°F
Check price at Sun Home for Sun Home Cold Plunge Horizontal Full review →| Criterion | Renu Therapy Cold Stoic 3.0 | Sun Home Cold Plunge Horizontal |
|---|---|---|
| US price | $11,399Checked Oct 13, 2026 · Price details in the review | $4,099Checked Oct 13, 2026 · Price details in the review |
| Three-year ownership estimate | $12,013.95 Incomplete known subtotal. Electricity assumption: $0.18/kWh. Not included: installation, annual consumables, other annual costs. | $5,373.01 Incomplete known subtotal. Not included: installation, other annual costs, energy use. |
| Choose if | 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. | You want cold plunges and warm soaks from one portable tub at $4,099, and you can give it a dedicated 15 A GFCI circuit. |
| Main trade-off | 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. | The warranty lasts only one year, and the manual asks you to drain and refill the tub every 2 to 3 weeks. |
| Key specifications |
|
|
| Exact variant | Meterous Black finish, California Redwood deck, included basic tub lid (SKU AS-CS30-BK-RD) | Horizontal (2-Person), SKU POLAR623: inflatable lie-down tub with a 1 HP chiller that cools and heats |
| Dimensions | 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. | The assembled tub measures 77.2 in long, 27.6 in wide and 24.4 in high. The manual and store description give the outer size as 6.4 × 2.3 × 2.1 ft. The store description puts the inside at 69 × 19.5 in, and the spec sheet at 69.3 × 19.7 in. The chiller is a separate box, 21.2 × 15.7 × 21.7 in. Empty, the tub weighs 15.5 lb and the chiller 88 lb. The spec card, spec sheet and manual list 128 gallons (485 L in the manual). The store description says 80 to 90 gallons instead. Sun Home doesn't explain the gap. The manual's fill line is 8 in below the top. Sun Home doesn't give a filled weight. |
| Installation | 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. | No plumbing is needed, Sun Home says. The tub inflates to 10 to 12 PSI with the included air pump, and the chiller connects with the included inlet and outlet hoses. The chiller plugs into a standard NEMA 5-15 outlet. That outlet must sit on a dedicated 15 A GFCI circuit. The manual says a licensed electrician should do all electrical work, and the wiring must follow local code. It also asks for a flat surface that can support 3,000 lb. Keep the chiller fan 3 ft from the tub and from walls. Keep the plunge at least 5 ft from other appliances. Leave 36 in clear in front of and behind the tub. Let the chiller stand upright and unplugged for 4 hours before first use. Sun Home rates the tub for indoor and outdoor use, but the chiller needs ambient air above 40°F to run. |
| Materials | 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. | Sun Home describes a puncture-resistant inflatable tub with an insulated cover and lid. It doesn't name the tub's fabric or construction, or the cover's material. The box also includes an air pump, inlet and outlet hoses with gaskets, a metal inlet screen, a spare 20-micron paper filter, a filter wrench, a repair kit and a carrying case. |
| Warranty | 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. | Sun Home gives the Cold Plunge a 1-year residential limited warranty against manufacturing defects. It starts at purchase or delivery, whichever is later, and covers the original buyer only. The warranty page and help-center FAQ cover labor and shipping for the first 90 days from delivery. After that, you pay both. The owner's manual reads differently: it says parts only, no labor, with freight at your cost. The manual also says commercial use voids the warranty, and it excludes freezing and improper water chemistry. Sun Home replaces defective parts at its discretion, and wear and tear and abuse aren't covered. The product page shows a "1+ Year Warranty" badge and a site-wide "Limited Lifetime Warranty" banner for most models. The warranty page lists one year for the Sun Home Cold Plunge and the Cold Plunge Pro and doesn't name the Horizontal separately. Extended warranties are sold separately, and the warranty page gives no price. |
| Returns | 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. | 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. The refund loses a 25% restocking fee plus 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. You can cancel an in-stock order within 24 hours. After that, a 25% restocking fee applies, and you may also pay roundtrip shipping. On a $4,099 tub, the restocking fee alone is $1,024.75. |
| Unresolved questions |
|
|
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.