SaunaLife Model S1 Hot and Cold Immersion Tub Package - 1-Person Contrast Therapy Plunge Tub with Combination Chiller/Heater
The SaunaLife S1 Cold Plunge Package is a complete cold therapy system, the SaunaLife Model S1 Thermo-Pine immersion tub paired with the FDC-1A chiller, sold together as one ready-to-go setup. Available in two finishes, S1NC (Natural Thermo-Pine) and S1BC (Black Thermo-Pine), you choose the look that fits your space, both versions ship with the same tub construction, the same chiller, and the same warranty. You don't piece it together from third-party parts. You don't try to figure out which chiller fits which tub. You get the tub and the chiller engineered to work as one system, both built and warrantied by SaunaLife.
Premium Thermo-Pine, twice the lifespan of cedar
The S1 tub is crafted from durable Thermo-Pine wood with a 1.65" thick surround, a thermally treated Northern European softwood that lasts up to 2X longer than cedar. Choose between the warm natural Thermo-Pine finish (S1NC) for a classic Scandinavian look, or the sophisticated black-stained finish (S1BC) for a modern, architectural feel. Both versions deliver the same thermal performance and durability, the thick surround provides exceptional insulation that keeps cold water cold for longer between chiller cycles.
Ergonomic fiberglass interior, 124 gallons
Inside, a thick dark grey fiberglass insert contours to your body for genuine comfort during longer sessions. The 124-gallon capacity gives one bather full immersion without crowding, and the contoured shape means you're not awkwardly shifting position to find a comfortable spot. Built-in drainage and chiller connections come integrated into the tub.
FDC-1A chiller, sized for the S1
The included FDC-1A chiller is engineered to maintain low temperatures in the S1 tub continuously. Plug it in, connect it to the integrated chiller ports on the tub, and it handles cold-water cycling on its own. No DIY plumbing for the chiller, no guessing on capacity, and no compatibility issues, the package was built specifically as a complete system.
Pre-assembled and ready out of the box
The S1 ships fully assembled with matching Thermo-Pine stairs, so the only setup is positioning the tub, connecting the chiller, and filling it. European craftsmanship from Northern Europe means every component is precision-built before it leaves the factory.
The complete cold plunge package in your choice of finish, SaunaLife's S1 Thermo-Pine immersion tub (Natural S1NC or Black S1BC) paired with the FDC-1A chiller, sold and warrantied as one system. Premium Thermo-Pine construction lasting 2X longer than cedar, 124-gallon ergonomic fiberglass interior, integrated chiller connections, and matching Thermo-Pine stairs included. Pre-assembled and ready for outdoor wellness.
Cold plunge package (tub + chiller) Natural or Black finish 1-person capacity Premium Thermo-Pine FDC-1A chiller included 124 gallon capacity Pre-assembled Authorized SaunaLife dealer
Specifications
S1 tub dimensions & capacity
| Exterior dimensions |
41.3"H × 40" diameter |
| Interior dimensions |
34.4" diameter × 36" deep |
| Water capacity |
124 gallons |
| Capacity |
1 person |
| Weight (filled) |
1,177 lbs (534 kg) |
Construction & materials
| Exterior |
Premium Thermo-Pine (1.65" thick) |
| Interior |
Contoured fiberglass (dark grey) |
| Stairs |
Matching Thermo-Pine, included |
| Drainage |
Built-in |
| Chiller connections |
Built-in |
| Origin |
Handcrafted in Northern Europe |
| Wood lifespan |
Up to 2X longer than cedar |
FDC-1A chiller
| Type |
External cold-water chiller |
| Designed for |
SaunaLife S1 tub |
| Connection |
Direct to S1 chiller ports |
| Operation |
Continuous cold-water cycling |
Available finishes
| Natural finish |
Model S1NC (Thermo-Pine natural) |
| Black finish |
Model S1BC (Thermo-Pine black) |
| Construction |
Identical between both finishes |
Shipping & installation
| Configuration |
Pre-assembled (S1 tub) |
| Shipping dimensions |
47.8"L × 46"W × 48.1"H |
| Shipping weight |
265 lbs (120 kg) |
| Installation type |
Outdoor |
| SKU / Model |
S1NC or S1BC Package |
What's included
SaunaLife Model S1 immersion tub (pre-assembled)
FDC-1A chiller
Premium Thermo-Pine tub surround
Contoured fiberglass interior lining
Matching Thermo-Pine stairs
Built-in drainage system
Built-in chiller connections
S1 tub installation manual
FDC-1A chiller installation manual
Warranty documentation
Why the SaunaLife S1NC Package stands out
Choose your finish
Same premium tub, two distinct looks. S1NC delivers the warm natural Thermo-Pine grain, S1BC offers a sophisticated black-stained finish for modern spaces. Both share identical construction.
Premium Thermo-Pine
Thermally treated Northern European pine that lasts up to 2X longer than cedar. The 1.65" thick surround provides exceptional insulation and durability outdoors.
Ergonomic fiberglass interior
Thick dark grey fiberglass insert contours to your body for genuine comfort during long sessions. 124-gallon capacity gives full immersion without crowding.
FDC-1A chiller included
External chiller specifically engineered for the S1 tub. Plug it in, connect to the integrated ports, and it handles cold-water cycling continuously on its own.
Tub plus chiller, one package
Sold and warrantied as a complete cold plunge system. No third-party chiller compatibility issues, no DIY plumbing, no guesswork. Everything works together by design.
Limited Lifetime warranty
SaunaLife backs the tub with a Limited Lifetime warranty on craftsmanship. The chiller is covered under its own manufacturer warranty terms. Both go through SaunaLife.
About SaunaLife
European craft, American design
Designed in the U.S., crafted in Northern Europe
SaunaLife was founded by sauna enthusiasts who wanted to make premium-quality home wellness more accessible. Partnering with Nordic innovators, they leverage Scandinavian design, sustainable materials, and traditional construction techniques to deliver products that actually last. The S1NC package brings that same philosophy to cold plunge.
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Two finish options, S1NC (Natural) or S1BC (Black)
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Premium Thermo-Pine, lasts up to 2X longer than cedar
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FDC-1A chiller included, engineered for the S1 tub
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Ergonomic fiberglass interior, contoured for real comfort
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Pre-assembled delivery, ready to use out of the box
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Limited Lifetime warranty, backed by the manufacturer
About SaunaLife
Live the SaunaLife
SaunaLife uses sustainably sourced, thermally treated Northern European wood across the entire product line, the same standard they apply to their Soak Series tubs that they apply to their flagship saunas. Every S1NC package is crafted to handle outdoor conditions for years with minimal maintenance.
The result is a cold plunge that fits naturally into a backyard, deck, or patio, looks intentional rather than industrial, and delivers the same therapeutic benefits as commercial-grade ice baths in a system designed for home ownership.
Manuals & Documents
Everything you need before and after installation
Download the official SaunaLife installation manuals for both the S1 tub and the FDC-1A chiller below. Review both before delivery so you understand exactly how the system goes together. The S1 tub ships pre-assembled, but the chiller requires connection to the integrated ports on the tub.
Installation Manuals
Warranty
Warranty
SaunaLife Limited Lifetime Warranty
Every SaunaLife S1 Cold Plunge Package (S1NC or S1BC) is backed by SaunaLife's Limited Lifetime Warranty on the tub's structural integrity and craftsmanship for residential use, the highest level of protection available in the category. The FDC-1A chiller is covered under its own manufacturer warranty terms. All warranty claims go directly through SaunaLife with full factory support. Proof of purchase from an authorized dealer is required to start any claim, and we are an authorized SaunaLife dealer. See the official warranty document above for full terms.
