Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Specs
ModelS1BC Package, S1NC Package, S1B, S1N
Tub water capacity124 gal
Tub exterior dimensions40 in diameter x 41.3 in high
Package chillerFDC-1A
Package water temperature32.5–108°F
Attachments
Legacy manuals for older installations

Use these only when the document revision matches the installed product.

Gallery
Includes
  • Thermowood walls 0.7"
  • Foundation Beams 3.94" x3.94"
  • Round Deluxe Stairs
  • Drainage 1"
  • Chiller Connections 3/4" NPT
  • Fiberglass Insert - Grey - Ergonomic

SaunaLife S1 Cold Plunge | Tub or Chiller Package

The important choice is tub only or a complete temperature-controlled setup. The SaunaLife S1 gives one person a contoured fiberglass plunge with a thermally modified wood surround and matching steps. Choose natural or black, with an optional FDC-1A chiller/heater package.

Build Your Quote:

Price range: $2,990.00 through $5,540.00

Cover

The Saunalife S1 Cover is the perfect accessory for protecting your S1 series Immersion plunge tub. This cover helps to keep sediment out, keeping your immersion tub cleaner even longer.

None Cover +$390.00
Chiller

Add a chiller/heater unit to precisely control your water temperature. Choose from our available chiller packages below.

None Penguin Chiller + Filter + Quick Connect Kit with warranty +$2,099.99 SaunaLife FDC-1A Chiller/Heater, 2.81kW Cooling, WiFi App Control, Ozone Filtration (32.5–108°F) +$2,850.00

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Choose the setup you want to live with

The S1 arrives assembled, with a contoured fiberglass insert, thermally modified wood surround, and matching steps. It holds 124 gal and is sized for one person. Choose a tub-only model if you already have a compatible cooling plan, or a C package for the tub with its matched chiller/heater.

What the model codes mean

  • S1N: natural-finish tub, without a chiller.
  • S1B: black-finish tub, without a chiller.
  • S1NC Package: natural tub with the FDC-1A chiller/heater.
  • S1BC Package: black tub with the FDC-1A chiller/heater.
  • Insulated cover is an optional selection. The NC and BC packages already include their matched chiller/heater; do not add a second chiller to those packages.

Cooling is a whole-system decision

The FDC-1A package provides a 32.5–108°F adjustable water-temperature range, with 2.81 kW cooling capacity and 3.38 kW heating capacity. The unit combines circulation, filtration, and ozone with Wi-Fi controls. Its temperature range is not a promise about cooling speed in every climate; tub loading and outdoor conditions affect performance.

Dimensions and package specifications

Bathers one person
Tub capacity 124 gal
Tub exterior 40 in diameter x 41.3 in high
Tub interior 34.4 in diameter x 36 in deep
Chiller in C packages FDC-1A
Water temperature range, C package 32.5–108°F
Chiller power supply 110–120V / 60Hz with supplied GFCI power cord and plug
Chiller dimensions 21.3 x 15.4 x 25 in
Chiller weight 103 lb

Plan the base, drainage, and winter care

Install the tub on a level, stable, reinforced base at least three inches above surrounding ground, as shown in the tub manual. Allow room for the steps, access to the drain, and the chiller’s required ventilation. The supporting surface must carry the tub, water, and bathers. Plan the fill and drain route before delivery.

The tub and chiller have separate maintenance instructions. Follow the exact chiller manual for electrical installation, ambient-temperature limits, priming, weather protection, and winterization. Drain and protect the system before freezing water can damage the plumbing. A household-voltage plug does not remove the need for a compliant grounded electrical installation.

Keep the everyday work manageable

Use the cover between sessions, remove visible debris, inspect the filter, and follow the manufacturer’s water-treatment schedule. Ozone and filtration do not replace water care or fresh-water changes.

Compare the footprint

Add the matching S1 insulated cover. If you want more room for reclining or sharing, compare the SaunaLife S2.

Call or text (844) 565-1113 with your layout, climate, and the way you want to use your plunge. We will help you check the fit before you order.

Replacement filters for the FDC-1A package

For the FDC-1A chiller supplied with S1 C packages, see Finnmark 5-inch pleated filters, four-pack. Match the cartridge and housing on your unit before replacement. A tub-only S1 does not include a chiller or require this filter by itself.

Compare systems and plan ongoing care

Compare cold plunge systems, equipment and total cost · Find model-specific filters and care supplies

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Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Specs
ModelS1BC Package, S1NC Package, S1B, S1N
Tub water capacity124 gal
Tub exterior dimensions40 in diameter x 41.3 in high
Package chillerFDC-1A
Package water temperature32.5–108°F
Attachments
Legacy manuals for older installations

Use these only when the document revision matches the installed product.

Gallery
Includes
  • Thermowood walls 0.7"
  • Foundation Beams 3.94" x3.94"
  • Round Deluxe Stairs
  • Drainage 1"
  • Chiller Connections 3/4" NPT
  • Fiberglass Insert - Grey - Ergonomic