SaunaLife Model S1NC Thermo-Pine Immersion Tub with Chiller/Heater

The Model S1N tub arrives fully assembled and pairs directly with the FDC-1A chiller/heater via 3/4" NPT connections and included water hose lines. The 1.65" thick Thermo-Pine tub surround lasts up to twice as long as cedar with superior thermal resistance. The dark grey contoured fiberglass interior is ergonomically shaped for a single bather with 124 gallons of water capacity. Matching Thermo-Pine stairs and integrated drainage are included. The FDC-1A is engineered for quiet, efficient operation with a built-in ozone filtration system, an 88W DC circulating pump, and plug-and-play setup from a standard 110V outlet. Full temperature control is available on the unit or through the iOS and Android app from anywhere.

Tub key features

• Fully assembled — no installation required
• Thermo-Pine tub surround — lasts up to 2x longer than cedar, 1.65" thick
• Superior thermal resistance for cold and heat retention
• Dark grey contoured fiberglass interior — ergonomically shaped for full-body immersion
• 124-gallon water capacity
• Built-in chiller connections — 3/4" NPT fittings
• Matching Thermo-Pine round deluxe stairs
• Integrated 1" drainage
• Designed by SaunaLife, handcrafted in Northern Europe

FDC-1A chiller/heater key features

• Temperature range 32.5°F–108°F — cold plunge and hot immersion
• Cooling capacity 2.81kW / heating capacity 3.38kW
• On-unit LCD touchscreen + iOS and Android app control
• Built-in ozone generator for continuous water sanitation
• 88W DC circulating pump
• Installed external filter
• Plug-and-play — standard 110–120V outlet with GFCI cord and plug
• Quiet operation
• Compact design — fits most spaces
• Refrigerant: R410A

Model S1N Tub

Brand: SaunaLife
Model: MODEL S1N
Material: Thermo-Pine
Capacity: 1 person
Water Capacity: 124 gallons
Interior Dimensions: 34.4" Diameter × 36"H (87 × 91 cm)
Exterior Dimensions: 40" Diameter × 41.3"H (102 × 105 cm)
Wall Thickness: 0.7" (1.7 cm) Thermowood
Foundation Beams: 3.94" × 3.94" (10 × 10 cm)
Chiller Connections: 3/4" (2 cm) NPT
Drainage: 1" (3 cm)
Product Weight: 124 lbs (56.2 kg)
Filled Weight: 1,158 lbs (525.2 kg)

FDC-1A Chiller/Heater

Model: FDC-1A
Temperature Range: 32.5°F–108°F (0.3°C–42°C)
Cooling Capacity: 2.81kW
Heating Capacity: 3.38kW
Working Ambient Temperature: 59–109°F cooling / 59–95°F heating
Circulating Pump: 88W DC motor
Disinfection: Ozone generator
Filter: Installed external
WiFi Control: iOS and Android app
Electrical Requirements: 110–120V~ / 60Hz
Electrical Safety: GFCI power supply cord and plug
Refrigerant: R410A
Dimensions: 21.3"W × 15.4"D × 25"H (54.1 × 39.1 × 63.5 cm)
Weight: 103 lbs (46.7 kg)
Warranty: 2-year limited (consumer use)

Model S1N Tub

• Fully assembled Thermo-Pine immersion tub
• Round deluxe Thermo-Pine stairs
• Fiberglass insert
• Integrated 1" drainage
• Built-in 3/4" NPT chiller connections
• Installation instructions

FDC-1A Chiller/Heater

• FDC-1A chiller/heater unit
• 5" filter assembly
• 5" filters
• Main filter wrench
• Secondary filter wrench
• Secondary filter screen
• LED remote
• Water hose lines (x2)
• Installation and operation manual

The Model S1N tub arrives fully assembled, no tub installation required. Connect the FDC-1A chiller/heater to the tub via the included 3/4" NPT water hose lines. The FDC-1A plugs into a standard 110–120V outlet with GFCI cord; no dedicated circuit or electrician required. Download the iOS or Android app for remote temperature control and session management. Note: filled weight is 1,158 lbs; ensure your floor or surface can support this load before placing indoors. Refer to the included installation and operation manual for full setup guidance.

Tub Installation Manual

Chiller Operation Manual

2-year limited warranty (consumer use) on the FDC-1A chiller/heater. Covers manufacturing defects in materials and workmanship under normal residential use. Does not cover damage from improper installation, misuse, neglect, or unauthorized modifications. Contact support@marterraelements.com with your order number, photos, and a description of the issue. We aim to respond within 2–3 business days. Warranty is non-transferable and requires original proof of purchase.

Saunalife Warranty

$495 flat rate freight to the contiguous United States. Remote or complex delivery areas may not qualify for this rate. Delivery is by special appointment on a wooden pallet encased in wood for solid protection. Standard delivery is curbside only; the driver lowers the item to ground level but is not responsible for moving it to its final location. We will contact you prior to shipping to share delivery details and discuss any circumstances that may affect the process. Returns accepted within 30 days of delivery for US customers. All returns must be approved prior to sending back; contact support@marterraelements.com to initiate. Items must be unused, undamaged, in original condition, with original packaging intact. Change of mind returns are subject to a restocking fee of up to 20%. Return shipping costs are the responsibility of the customer. Proof of purchase required.