Finnmark FD-5 Trinity 4-Person Combination Sauna | Infrared + Traditional + Red Light
- Authorized Retailer of Finnmark Designs
- Manufacturer Warranty Included
- Free Freight Shipping — Curbside Delivery by Appointment
- Secure Checkout & U.S.-Based Customer Support
- ETL Safety Certified
Due to increased demand, Finnmark FD Series Infrared Saunas are currently on backorder with an estimated restock date of August 28.
Orders are still being accepted and will be fulfilled in the order they are received once inventory becomes available.
✔ Reserve your unit from the incoming shipment
✔ Orders ship in sequence upon restock
✔ Tracking information will be provided once your order ships
Questions? Contact our team anytime — we're happy to assist with product selection, planning, and availability.
Finnmark FD-5 Trinity — The Ultimate 4-Person 3-in-1 Home Sauna
The Finnmark FD-5 Trinity is the flagship of the Finnmark lineup — a spacious 4-person indoor combination sauna that brings together full-spectrum infrared heating, a 4.5 kW traditional electric sauna heater with stones, and an integrated red light therapy system, all in one beautifully crafted cabin. Use each system independently or combine them for a fully customized sauna experience.
With a Western Canadian Cedar interior, Thermo-Aspen exterior, built-in touchscreen controls, Bluetooth audio, and ETL safety certification, the FD-5 Trinity is built for buyers who want the most complete home sauna experience available.
Intended for indoor residential installation only. Not a medical device.
Browse all infrared saunas, explore the full Finnmark collection, or shop all saunas.
| Feature | Infrared Only | Traditional Only | FD-5 Trinity (All Three) |
|---|---|---|---|
| Full-spectrum infrared heat | ✅ | ❌ | ✅ |
| Traditional steam (löyly) experience | ❌ | ✅ | ✅ |
| Integrated red light therapy | ❌ | ❌ | ✅ |
| Seats up to 4 people | Varies | Varies | ✅ |
| Independent system controls | N/A | N/A | ✅ |
| Bluetooth audio & touchscreen control | Varies | Varies | ✅ Included |
| ETL safety certified | Varies | Varies | ✅ |
Best For
- Indoor residential sauna installation
- Families or households wanting a 4-person sauna
- Buyers who want infrared, traditional steam, and red light therapy in one unit
- Home wellness spaces requiring maximum flexibility
- Buyers who want the most complete Finnmark sauna experience
Key Features
- 4-person indoor 3-in-1 combination sauna
- Spectrum Plus™ short-wave infrared heaters
- Carbon 360° long-wave infrared panels
- 4.5 kW traditional electric sauna heater with stones
- Integrated red light therapy system
- Each system independently controlled or combined
- Built-in touchscreen control panel with WiFi connectivity
- Bluetooth-enabled audio system with speakers
- Interior lighting system
- Two-tier bench seating
- Tempered glass door
- Western Canadian Cedar interior / Thermo-Aspen exterior
- ETL safety certified
- Designed for indoor residential use
Heating & Therapy Systems
- Infrared: Spectrum Plus™ short-wave heaters + Carbon 360° long-wave panels (2,700W, up to 170°F)
- Traditional: 4.5 kW electric sauna heater with stones (up to 190°F)
- Red Light: Integrated red light therapy system (independent control)
- All three systems may be used individually or in combination
The traditional heater allows water to be added to sauna stones for steam in accordance with manufacturer guidelines.
Materials & Construction
- Exterior: Thermo-Aspen
- Interior: Western Canadian Cedar
- Tempered glass door
- Two-tier bench system
Natural variations in wood grain, color, and texture are normal characteristics of wood products.
Specifications
- Model: FD-5 Trinity
- Capacity: Up to 4 persons
- Intended Use: Indoor residential only
- Voltage: 240V
- IR Watts: 2,700W
- Traditional Heater: 4.5 kW
- Phase: Single Phase
- Max Temperature: IR 170°F / Traditional 190°F
- Room Volume: 130 cu. ft.
- Product Weight: 575 lbs
- Shipping Weight: 840 lbs
What's Included
- Finnmark FD-5 Trinity sauna cabin
- Spectrum Plus™ & Carbon 360° infrared heating components
- 4.5 kW traditional electric sauna heater
- Sauna stones
- Integrated red light therapy system
- Touchscreen control panel with WiFi
- Bluetooth audio system and speakers
- Interior lighting system
- Installation hardware
- Manufacturer documentation
Follow manufacturer documentation for assembly, electrical setup, and heater operation. Installation should comply with local building and electrical codes.
Installation Notes
- Indoor residential installation only
- Requires 240V electrical connection — professional installation recommended
- Install in a dry, climate-controlled environment
- Follow all manufacturer instructions and local electrical and building codes
Additional Resources
- 4-person indoor 3-in-1 combination sauna
- Full-spectrum infrared + 4.5 kW traditional steam + red light therapy
- Each system independently controlled or combined
- 240V electrical configuration — professional installation recommended
- Built-in touchscreen + WiFi controller with Bluetooth audio
- Western Canadian Cedar interior / Thermo-Aspen exterior
- ETL safety certified
- Free freight shipping — curbside delivery by appointment
- Manufacturer warranty included
Important: This sauna is intended for indoor residential use only. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or medical condition.
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