Buy from Ice Barrel: 500
Ice Barrel's own page for the 500. Not a paid link.
Ice Barrel 500 and Redwood Outdoors Alaskan Plunge Tub, compared on the figures their makers publish. The makers of both cold plunge tubs without a chiller state water capacities within 30% of each other.
| Specification | Ice Barrel 500 | Redwood Outdoors Alaskan Plunge Tub |
|---|---|---|
| Indoor or outdoor | works in homes, apartments, gyms, and outdoor spaces | — |
| Seats (maker's rating) | — | 1 person |
| Outside dimensions | W 30.7” x H 42.1” x L 57.6” | Exterior Diameter 37" Side Wall Height 40 ½" |
| Weight | 104 lbs. when empty | Dry Weight 250 lbs |
| Material | Made in the USA from recycled materials; the thick polyurethane foam insulation throughout the barrel and lid | Liner Hard plastic; Wood Type Canadian Thermowood |
| Water capacity | 356 liters (94 gallons) | Max Water Volume 130 gallons |
| Chiller | Chiller ports are 3/4″ NPT with 14 TPI | Chiller Type Chiller not included |
| Warranty | Limited lifetime warranty | 1-year limited warranty |
| Price on the maker's site | $1,749.99 (icebarrel.com, 29 Sep 2026) | $2,999 (redwoodoutdoors.com, 29 Sep 2026) |
Each figure is the maker's own, as cited row by row on the 500 and Alaskan Plunge Tub pages and listed in the sources below. A dash means the figure is not on the maker pages we cite. Figures marked "about" are Saunakivi's unit conversions of the maker's figure.
Ice Barrel's own page for the 500. Not a paid link.
Redwood Outdoors' own page for the Alaskan Plunge Tub. Not a paid link.
Figures we cite for only one of the two: indoor or outdoor (only Ice Barrel's cited pages give it); seats (maker's rating) (only Redwood Outdoors's cited pages give it). Ask the other maker before treating the two as equal on those points.
Ice Barrel · cold plunge tub without a chiller · 94 gallons · for indoor or outdoor use
Redwood Outdoors · cold plunge tub without a chiller · 130 gallons