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SaunaLife Model S1B 1-Person Cold & Hot Immersion Tub
by SaunaLife
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SaunaLife Model S1B 1-person cold and hot immersion tub
The SaunaLife S1 is a one-person Soak-Series tub for cold-water plunges or hot-water immersion. It holds 124 gallons in a contoured fiberglass liner, has a Thermo-Pine wood exterior, arrives fully assembled and comes with matching Round Deluxe Stairs. SaunaLife designs it and handcrafts it in Northern Europe.
Best for: One person who wants a compact, fully assembled tub for cold or hot immersion at home.
Specifications at a glance
- Capacity: 1 person, 124 gallons
- Exterior size: 40 in diameter x 41.3 in high
- Interior size: 34.4 in diameter x 36 in deep
- Exterior: Thermo-Pine wood, offered in black or natural brown
- Liner: Contoured grey fiberglass
- Weight (filled): 1,177 lb
- Drain: 1 in
- Chiller connections: 3/4 in NPT
- Stairs: Matching Thermo-Pine Round Deluxe Stairs
- Assembly: Arrives fully assembled
Space, power and setup
Plan a level, load-bearing spot: the tub weighs about 1,177 lb when filled. See SaunaLife's installation manual for base and placement guidance, and measure doorways and the route to the install site before delivery. SaunaLife lists chiller connections, but a chiller or heater is not listed with the tub, so ask our team about heating or cooling equipment and have a licensed electrician handle any wiring.
Questions buyers ask
How much space does the S1 need?
The tub is 40 in across and 41.3 in tall, with a 34.4 in wide, 36 in deep interior. Allow extra room for the stairs and access.
Does it include a chiller or heater?
No chiller or heater is listed with the tub. SaunaLife provides 3/4 in NPT chiller connections; ask our team about compatible equipment.
Which finish is this listing?
SaunaLife offers the S1 with a black or natural brown exterior. Please confirm the finish with our team before ordering.
What should I expect from delivery?
Curbside delivery is free within the continental U.S. Optional White Glove delivery is available and priced at checkout follow-up.
Helpful guides
Cold Plunge Buyer's Guide: Chilled vs. Ice Bath vs. DIY | Indoor vs. Outdoor Cold Plunge: Placement, Winterizing and Power Needs | Cold Plunge Safety: Heart Conditions, Cold Shock and Getting Out Safely
Not sure which size or configuration fits your space? Call 1-762-214-2594 (Mon-Sun 9am-9pm EST) or request a quote, and our product specialists will help you compare options and plan delivery and installation.
Intended for general wellness use, following the manufacturer's instructions. Not intended to diagnose, treat, cure, or prevent any disease or medical condition. Results vary. Cold water and hot water immersion are not suitable for everyone; talk with a healthcare provider first, never soak alone, and start gradually.
- One-person cold or hot immersion tub
- 124-gallon water capacity
- Contoured grey fiberglass liner
- Thermo-Pine wood exterior
- Arrives fully assembled
- Matching Round Deluxe Stairs
- 3/4 in NPT chiller connections
- 1 in drain
- Designed by SaunaLife, handcrafted in Northern Europe
| Brand | SaunaLife |
|---|---|
| Series | Soak |
| Model | S1B |
| Type | Cold and hot immersion tub |
| Capacity | 1 person |
| Water capacity | 124 gallons |
| Exterior size | 40 in diameter x 41.3 in high |
| Interior size | 34.4 in diameter x 36 in deep |
| Exterior | Thermo-Pine wood (black or natural brown finish) |
| Liner | Contoured grey fiberglass |
| Weight (filled) | 1,177 lb |
| Drain | 1 in |
| Chiller connections | 3/4 in NPT |
| Stairs | Round Deluxe Stairs in matching Thermo-Pine |
| Assembly | Arrives fully assembled |
| Shipping dimensions | 47.8 x 46 x 48.1 in |
- ## The tub
- SaunaLife S1 tub, fully assembled
- Contoured fiberglass liner
- Thermo-Pine exterior
- Matching Round Deluxe Stairs
- ## Optional
- Optional: Chiller or heater (not listed with the tub; ask our team)
Shipping & Delivery: Most orders ship free within 1-2 business days via curbside delivery. Need it brought inside and set up? Choose White Glove Delivery at checkout and our team will follow up with pricing and scheduling.
Warranty: Warranty coverage varies by manufacturer and product. Contact our team before purchase for the specific warranty terms on this item, or reach out any time after your purchase with a manufacturer defect concern — we'll help you through the process.
Product manuals, installation guides, and spec sheets for this item are available on request. Contact our product specialists and we'll send you the documentation.
Here is what ships with this model. Everything in the checklist is included in the price; anything marked Optional is not included unless you add it.
The tub
- SaunaLife S1 tub, fully assembled
- Contoured fiberglass liner
- Thermo-Pine exterior
- Matching Round Deluxe Stairs
Optional
Optional add-ons (not included)
Not includedAvailable for this model at extra cost. Ask our team to add them to your order.
- Chiller or heater (not listed with the tub; ask our team)
Not sure which configuration you need? Call 1-762-214-2594 and our team will confirm exactly what arrives with your order.