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Our upright pick

Nordic Wave Viking Premier Cold Plunge

Arctic White with the Gen 2 Pro chiller (0.8 HP, heater included)

$5,990US price, checked Oct 13, 2026

Upright plug-in plunge that chills to 35°F on a 36 × 30 in footprint

Check price at Nordic Wave Full review →

Our cheapest chilled pick

Sun Home Cold Plunge Horizontal

Horizontal (2-Person), SKU POLAR623: inflatable lie-down tub with a 1 HP chiller that cools and heats

$4,099US price, checked Oct 13, 2026

Inflatable lie-down tub with a 1 HP chiller that cools and heats, 32 to 104°F

Check price at Sun Home Full review →

Criterion	Nordic Wave Viking Premier Cold Plunge	Sun Home Cold Plunge Horizontal
US price	$5,990Checked Oct 13, 2026 · Price details in the review	$4,099Checked Oct 13, 2026 · Price details in the review
Three-year ownership estimate	$6,169.97 Incomplete known subtotal. Not included: energy use.	$5,373.01 Incomplete known subtotal. Not included: installation, other annual costs, energy use.
Choose if	You have a small indoor or outdoor spot near a standard outlet, and you want cold plunges and warm soaks without an electrician.	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 is covered for only a year, and power costs are unknown because Nordic Wave publishes no power draw.	The warranty lasts only one year, and the manual asks you to drain and refill the tub every 2 to 3 weeks.
Key specifications	Temperature range: 35–104°F with the included heater. Hot mode is switched on in the Nordic Flow app Chiller: Gen 2 Pro, rated 0.8 HP, with an auto-priming pump. The 1.0 HP Elite is suggested for warm climates. No cooling rate is published Electrical: Standard 120 V household outlet. Amperage, wattage and GFCI needs not stated Size and capacity: 36 W × 30 D × 44 H in outside and about 95 gallons. Listed at 60 lb without water and about 904 lb with water Water care: Multi-stage filtration with UV on the product page, and ozone in the store description. 50-micron filters, changed monthly Outdoor use: Rated down to 14°F ambient. Drain it at 14°F or below Controls: Free Wi-Fi control in the Nordic Flow app. A 60-day membership to its mindfulness tools is included, and guided routines are an optional subscription	Temperature range: 32–104°F, cooling and heating. The chiller needs ambient air above 40°F to run Chiller: 1 HP, 21.2 × 15.7 × 21.7 in, 88 lb, 55–60 dB. Cooling rate not stated Electrical: Rated 120 V, 11 A with a NEMA 5-15P plug, on a dedicated 15 A GFCI circuit. Wattage not stated Water capacity: 128 gallons on the spec card, spec sheet and manual. The store description says 80–90 gallons Tub size and weight: 77.2 × 27.6 × 24.4 in outside, 15.5 lb empty. Filled weight not stated Water care: 20-micron paper filter, metal inlet screen and ozone injection. Full water change every 2–3 weeks Controls: Sun Home or Tuya app over 2.4 GHz Wi-Fi for temperature and scheduling, with a child lock
Exact variant	Arctic White with the Gen 2 Pro chiller (0.8 HP, heater included)	Horizontal (2-Person), SKU POLAR623: inflatable lie-down tub with a 1 HP chiller that cools and heats
Dimensions	Outside, it measures 36 W × 30 D × 44 H in. Inside, the spec table lists 32 W × 26 D × 39 H in, but an FAQ on the same page gives 37 in for the height. The floor is 24 × 19 in, and it holds about 95 gallons. The spec table lists it at 60 lb without water and about 904 lb with water. Those figures don't add up, since 95 gallons of water weighs about 790 lb. That leaves about 110 lb of dry weight, not 60. Nordic Wave's online store gives 235 lb for the Pro version and 245 lb for the Elite, without saying what that weight covers. An FAQ on the page says the Classic Viking is 30 in wide and fits through most residential doors. That 30 in matches the tub's depth, not its 36 in width.	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	Nordic Wave says the chiller runs from a standard 120 V household wall outlet, with no specialized electrical upgrades. It doesn't give amperage, wattage or a GFCI requirement. The page calls setup plug-and-play, with an auto-priming pump, and puts it at 15 minutes. It doesn't say how to fill the tub. You drain it by connecting a garden hose to the bottom valve. It's rated for indoor and outdoor use down to 14°F ambient. At 14°F or below, the FAQ says to drain it and store it somewhere temperature-controlled. Shipping to the continental US is free by FedEx Freight. White Glove delivery is an optional upgrade at checkout, and the page doesn't give its price. It ships in 1 to 2 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	Nordic Wave doesn't name the shell material. The walls have 2 in of foam insulation, with an anti-sweat design meant to stop condensation. The floor slopes to a dedicated drain valve. It comes with all-weather steps, a Stay-Cold lid and a 2-month supply of filters. The chiller has a clear filter housing, so you can see the filter.	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	The tub is covered for 5 years from purchase and the chiller for 1 year from delivery, against defects in materials and workmanship. The warranty page covers the Viking Cold Plunge System and doesn't name the Premier separately. Coverage is for home use by the original buyer and can't be transferred. You must buy filters from Nordic Wave to keep it. Exclusions include skipped filter changes, poor water care, freezing, voltage fluctuations and misuse. Improper installation or relocation is excluded too, and using a third-party freight forwarder voids it. It must be installed and running within 30 days of delivery, and mold or stagnant water from a delay isn't covered. A chiller repair or replacement costs you a flat $250 for shipping and packaging both ways. Repairs must be done by a Nordic Wave approved technician.	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 have 15 days from delivery to request a return, and only new units qualify. Every approved return is charged a flat 20% restocking fee on what you actually paid, even if the box was never opened. The fee includes return freight. At the $5,990 sale price, that's $1,198. You can cancel within 48 hours of ordering for a full refund if the order hasn't entered fulfillment. After that, a 5% fee applies until it ships, and a shipped order can't be canceled. Refurbished, open-box, floor-model and clearance units are final sale. A defective or damaged unit carries no restocking fee if you report it within 48 hours of delivery. That's shorter than the 7 days the warranty page gives for shipping damage.	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	Power draw, amperage, and whether a GFCI or dedicated circuit is recommended Cooling and heating rates What the optional guided-routine subscription costs after the 60-day membership Shell material The price of White Glove delivery Whether the $5,990 sale price applies at checkout, since Nordic Wave's online store still shows $6,990, and when the sale ends Whether the tub or chiller carries an ETL, UL or CSA safety listing Whether the interior height is 39 in or 37 in Whether the 60 lb empty weight includes the chiller, and what the store's 235 lb weight covers Whether filters need changing once or twice a month, since the product and filter pages differ Whether ozone is part of the water care, since the product page lists UV and the store description lists ozone	Chiller wattage, average power draw and daily run time Cooling and heating rate Filled weight Whether the real water volume is 128 gallons or 80–90 gallons Whether the tub is meant for one person or two The tub's fabric and construction Whether the tub or chiller carries an electrical safety listing such as ETL, UL or CSA Refrigerant type Whether the app carries a fee Price of the extended warranty

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.