The Finnmark FD-5 Trinity XL 3-IN-ONE Sauna is a premium combination home sauna that integrates full-spectrum infrared heating, a traditional Finnish-style electric sauna heater, and integrated red light technology within a single sauna cabin.
Designed for users who want flexibility in their sauna experience, the Trinity XL allows sessions using infrared heat, traditional steam-style sauna heat, or a combination of both. Its spacious interior and advanced heating configuration make it suitable for dedicated home wellness rooms and high-end residential installations.
Pre-Order Notice
Due to high demand, this item is currently on backorder.
Next available shipment is expected late August 2026.
Heating System
The FD-5 Trinity XL combines multiple heating technologies into one system:
- Spectrum Plus™ UL-listed short-wave infrared heaters
- Spectrum Carbon 360° long-wave infrared panels
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Spectrum red light LED panel integrated into the ceiling
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Harvia KIP Series B 4.5 kW electric sauna heater with sauna stones
This configuration allows users to select different heat modalities depending on preference, including traditional sauna heat with steam when water is added to the stones.
Materials & Construction
The interior is constructed from Western Canadian cedar, selected for its suitability in sauna environments. The exterior features Thermo-Aspen, a heat-treated wood designed for long-term dimensional stability.
Double-wall construction with insulation and 8 mm tempered glass supports thermal efficiency and durability during regular use.
Features
- 3-in-1 combination sauna: infrared, traditional electric sauna, and red light
- UL-listed Spectrum Plus™ infrared heaters
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Spectrum Carbon 360° infrared panels for full-body coverage
- Integrated Spectrum red light LED panel
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Harvia KIP Series B 4.5 kW electric sauna heater with sauna stones
- Built-in LCD Wi-Fi touchscreen controller with Bluetooth audio
- Integrated audio system with 6 in Hi-Fi speakers
- Extra-large two-tier bench system
- Low-EMF design
- High-emissivity infrared heaters
What’s Included
- Bottom, top, back, front, left, and right panels
- Glass door
- Bench supports and bench tops
- Infrared heater panels
- Harvia KIP Series B 4.5 kW sauna heater
- 1 box of Harvia AC3000 sauna stones (44 lbs)
- Heater and floor cables
- Power supply unit and power cable
- Interior heater connections with wood cover
- Door handle and hardware
- Spectrum near-infrared & red light ceiling panel
- Controller 2.0 LCD Wi-Fi touchscreen control panel
- Bluetooth audio system
- ETL certification
- Limited warranty
Additional sauna stones may be purchased separately.
Technical Specs – Sauna
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Model: FD-5
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Interior Materials: Western Canadian Cedar
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Exterior Materials: Thermo-Aspen
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Voltage: 240 V
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IR Output: 2700 W
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Plug Type: NEMA 6-15
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Maximum Temperature:
- Infrared: up to 170°F
- Traditional sauna: up to 190°F
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Interior Dimensions: 71 in W × 57.5 in D × 75.5 in H
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Exterior Dimensions: 75 in W × 64 in D × 83 in H
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Room Volume: 130 cu ft
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Glass Thickness: 8 mm
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Product Weight: 575 lbs
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Shipping Weight: 840 lbs
Technical Specs – Sauna Heater
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Model: Harvia KIP45B
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Output: 4.5 kW
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Fuel Type: Electric
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Voltage: 240 V
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Phase: 1-phase
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Amperage: 18.8 A
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Sauna Room Size: 100–210 cu ft
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Heater Dimensions: 16 in W × 11 in D × 24 in H
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Heater Weight: 40 lbs
- UL Listed
- 2-Year Consumer Warranty
Shipping
- Free shipping included
- Delivered by special appointment on a wooden pallet
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Curbside delivery only (items lowered to ground level)
Customers may be contacted prior to shipment to confirm delivery details and discuss site-specific considerations.
Why the Finnmark FD-5 Trinity XL
- Multiple sauna heating options in one system
- Premium materials and construction
- Traditional Finnish sauna capability with infrared flexibility
- Designed for long-term residential use
- Consistent with Finnmark FD-Series quality
Manuals
Owners Manual Trinity XL FD-5
V2 LCD Controller with WiFi
Spec Sheet Trinity XL FD-5
Dimension Diagram Trinity XL FD-5
Finnmark Warranty
