See it at SaunaLife: Model S1 Soak Series
SaunaLife's own page for the Model S1 Soak Series. Not a paid link.
Alaskan Plunge Tub vs Model S1 Soak Series
Redwood Outdoors Alaskan Plunge Tub and SaunaLife Model S1 Soak Series, compared on the figures their makers publish. Both are cold plunge tubs without a chiller, and the water capacities their makers state are within 30% of each other.
The makers' figures side by side
| Specification | Redwood Outdoors Alaskan Plunge Tub | SaunaLife Model S1 Soak Series |
|---|---|---|
| Indoor or outdoor | — | outdoor |
| Seats (maker's rating) | 1 person | — |
| Outside dimensions | Exterior Diameter 37" Side Wall Height 40 ½" | 40" Diameter x 41.3" |
| Inside dimensions | — | 34.4” Diameter x 36” Deep |
| Weight | Dry Weight 250 lbs | Net weight 143 lbs |
| Assembly | — | Arrives fully assembled |
| Material | Liner Hard plastic; Wood Type Canadian Thermowood | Thick contoured fiberglass lining; Thermo-Pine materials |
| Water capacity | Max Water Volume 130 gallons | 124 Gallon water capacity |
| Chiller | Chiller Type Chiller not included | — |
| Warranty | 1-year limited warranty | service for two years for residential applications after delivery to the original retail purchaser |
| Price on the maker's site | $2,999 (redwoodoutdoors.com, 29 Sep 2026) | — |
Each figure is the maker's own, as cited row by row on the Alaskan Plunge Tub and Model S1 Soak Series 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.
Where to buy
SaunaLife Model S1 Soak Series
As an Amazon Associate we earn from qualifying purchases. Some links on this page are paid: if you buy after following one, the retailer pays Saunakivi (IPORA LLC) a commission. It costs you nothing extra, and it never changes the specifications we list.
Buy from Redwood Outdoors: Alaskan Plunge Tub
Redwood Outdoors' own page for the Alaskan Plunge Tub. Not a paid link.
Where the published figures differ
- Outside dimensions: Alaskan Plunge Tub: Exterior Diameter 37" Side Wall Height 40 ½". Model S1 Soak Series: 40" Diameter x 41.3".
- Weight: Alaskan Plunge Tub: Dry Weight 250 lbs. Model S1 Soak Series: Net weight 143 lbs.
- Material: Alaskan Plunge Tub: Liner Hard plastic; Wood Type Canadian Thermowood. Model S1 Soak Series: Thick contoured fiberglass lining; Thermo-Pine materials.
- Water capacity: Alaskan Plunge Tub: Max Water Volume 130 gallons. Model S1 Soak Series: 124 Gallon water capacity.
- Warranty: Alaskan Plunge Tub: 1-year limited warranty. Model S1 Soak Series: service for two years for residential applications after delivery to the original retail purchaser.
Figures we cite for only one of the two: indoor or outdoor (only SaunaLife's cited pages give it); seats (maker's rating) (only Redwood Outdoors's cited pages give it); inside dimensions (only SaunaLife's cited pages give it); assembly (only SaunaLife's cited pages give it); chiller (only Redwood Outdoors's cited pages give it); price on the maker's site (only Redwood Outdoors's cited pages give it). Ask the other maker before treating the two as equal on those points.
Read each one in full
Redwood Outdoors Alaskan Plunge Tub
Redwood Outdoors · cold plunge tub without a chiller · 130 gallons
SaunaLife Model S1 Soak Series
SaunaLife · cold plunge tub without a chiller · 124 gallons · for outdoor use
Sources
- Alaskan Plunge Tub - Redwood Outdoors — Redwood Outdoors
- Model S1 Soak Series - SaunaLife — SaunaLife
- SaunaLife: Soak Series S1 Installation Manual REV1.0 01 25 (PDF) — SaunaLife
- SaunaLife: SaunaLife Warranty (PDF) — SaunaLife
- SaunaLife: immersion tubs — SaunaLife