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FD-4 Trinity Infra-Steam Sauna
$7,795.00
Was
$9,171.00
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Availability
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ETA
Next restock expected 8/21/2026
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FD-4 Trinity Infra-Steam Sauna
Sale price$7,795.00
Regular price$9,171.00
Overview
The only 2-person hybrid sauna engineered for full-spectrum infrared, authentic steam, and red light therapy — all on a 120V plug. The FD-4 combines medical-grade near-infrared, a Harvia Finnish steam stove, and antimicrobial cedar in a compact, easy-to-install design.
Features
- Heats to 170°F (infrared) or 190°F (steam) – dual heat flexibility
- Dual infrared system: Carbon 360° far-IR + UL-listed Spectrum Plus™ near-IR
- Harvia Vega Compact 1.9 kW traditional heater with steam stones (included)
- Built-in 650nm red light therapy – supports skin, circulation, recovery
- Digital touchscreen control with WiFi remote app access
- Bluetooth audio with premium 6" built-in speakers
- Constructed from antimicrobial Western Red Cedar (interior) and rot-proof Thermal Plus™ Aspen (exterior)
- ETL safety certified with ultra-low EMF heaters
- Assembles in under 60 minutes – no special tools or installers required
The FD-4 features a double-walled cabin lined with Grade-A Western Red Cedar — naturally antimicrobial and aromatic — and a Thermal Plus™ Aspen exterior that will never rot, warp, or decay. The walls are insulated for maximum heat retention and energy efficiency. Its 8mm tempered glass door provides durability and a clean aesthetic.
Specifications
| Category | Detail |
|---|---|
| Capacity | 2 person |
| Exterior Dimensions | 48″ W x 48″ D x 83″ H |
| Interior Dimensions | 45.2″ W x 44.5″ D x 75.5″ H |
| Volume | 86 cu. ft. |
| Weight | 437 lbs (Shipping: 485 lbs) |
| Wood Type | Interior: Western Red Cedar; Exterior: Thermal Plus™ Aspen |
| Glass | 8mm tempered glass door |
| Heating System | Full-spectrum: Carbon far-IR + Spectrum Plus™ near-IR + Harvia steam stove |
| Infrared Output | 1.7 kW |
| Steam Output | 1.9 kW (Harvia Vega Compact) |
| Max Temperature | 170°F (IR), 190°F (Steam) |
| Red Light Therapy | Integrated ceiling-mounted 650nm LED array |
| Control Panel | Touchscreen digital panel w/ WiFi app control |
| Lighting | Chromotherapy LEDs |
| Audio | Bluetooth receiver, dual 6” built-in speakers |
| Electrical Setup | 120V / 15A standard household circuit; NEMA 5-15 plug; no hardwiring required; outlet must be dedicated |
What's Included
Check the manufacturer documentation and order confirmation for exact package contents. Controls, heaters, stones, and accessories are included only when explicitly listed for this configuration.
Installation
The FD-4 is designed for indoor use only and fits under standard 8-ft ceilings. It assembles in 30–60 minutes with two people. No tools or professional installation required — the panels lock together via pre-fitted hardware, and the wiring is plug-and-play. It sits on any flat indoor surface including tile, wood, or carpet. Adjustable leveling feet are included.
Operation and Usage
Once plugged into a standard 120V / 15A outlet, use the touchscreen or app to power on the infrared system (up to 170°F), set your session time (up to 60 minutes), and control lighting and audio. Activate the Harvia stove separately via built-in controls to reach up to 190°F. Add water to the included sauna stones for true Finnish-style steam. Use infrared, steam, or both. No plumbing required.
- The FD-4 is built with safety at its core:
- Ultra-low EMF output, third-party tested
- ETL certified to UL/CSA electrical safety standards
- Built-in overheat protection and session timer
Zero off-gassing materials or adhesives
Ideal for daily use in residential settings.
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WHY CHOOSE FINNMARK?
Explore premium Finnmark infrared and hybrid saunas, backed by personalized product guidance, coordinated freight delivery, and dedicated support from Sauna Luxuries.
ADVANCED HEATING TECHNOLOGY
Finnmark combines innovative Spectrum Plus™ infrared technology with premium materials and versatile heating options for an elevated home sauna experience.
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Sauna Luxuries is a dedicated partner in wellness, offering carefully selected products for quality, performance, and long-term value. As an authorized dealer, we ensure authentic models, factory warranties, and expert guidance. Find fast answers and custom recommendations for your perfect sauna.
