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Finnmark FD-4 Trinity - Product Details
  • Product Description
  • What's Included
  • Key Features
  • Specifications
  • Warranty

3-IN-ONE Combination Sauna

The Finnmark FD-4 Trinity is a revolutionary 2-person combination sauna that merges three distinct wellness therapies into one compact cabin. It is the only sauna available that combines UL-listed Spectrum Plus™ infrared heaters with a traditional 120V sauna heater, plus true medical-grade Spectrum Red Light™ Therapy.

No need to compromise. Get hot fast! The Spectrum Plus™ infrared heaters are the only IR heaters passed by Underwriter Laboratories to be used in tandem with a traditional steam sauna stove. This allows short-wave far-infrared to penetrate muscles and joints, making you sweat 25 times more than standard carbon panel heaters.

The Power of 3 Therapies in One

1. Full-Spectrum Infrared (Spectrum Plus™ & Carbon)
A combination of long-wave Spectrum Carbon 360° panels and UL-listed short-wave Spectrum Plus™ heaters provides higher temperatures, full body coverage, and deeper penetration than any other sauna. It warms your core body temperature, producing a cleaner, healthier sweat while removing 17% more toxins.

2. Traditional Steam Sauna (Harvia Vega Compact 1.9kW)
Includes a robust Harvia Vega Compact 1.9kW stainless steel heater. Splash water on the sauna stones for an authentic steam experience ("löyly") and enjoy the intensity only offered by a steam sauna.

3. Medical-Grade Red Light Therapy
A dedicated Spectrum Red Light™ panel utilizes 192 medical-grade LEDs to produce therapeutic 650nm red light. This phototherapy stimulates collagen production, improves skin tone, and reduces inflammation—perfect for enhancing your wellness ritual.

What's in the Box?

  • Prefabricated Cedar/Aspen Panels (Top, Bottom, Front, Back, Sides)
  • Infrared Heater Panels (Spectrum Plus & Carbon)
  • Harvia Vega Compact 1.9kW Heater (120V)
  • 1 Box of Harvia Sauna Stones (AC3000)
  • Medical-Grade LED Red Light Panel (192 Diodes)
  • Glass Door with Handle
  • Interior Two-Tier Bench System & Floor Grid
  • LCD Wi-Fi Touchscreen Controller & Power Supply Unit
  • Installation Hardware & Manual

⚠️ Electrical Note

The Harvia Vega Compact 1900 heater requires a dedicated 120V connection. Please ensure proper electrical setup for both the infrared system and the traditional heater.

Note: We recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function.

Key Features

Spectrum Plus™ Heaters UL-listed short-wave infrared heaters penetrate deep into muscles (25x deeper than carbon) for effective pain relief and recovery.
Premium Hybrid Construction Antimicrobial Western Canadian Cedar interior protects against mold and bacteria, while the Thermal Plus™ Aspen exterior ensures lifelong durability without rotting or warping.
Smart Wi-Fi Control Built-in LCD Wi-Fi Touchscreen Controller with Bluetooth audio manages your session settings effortlessly.
Immersive Audio Audio system with 6" Hi-Fi speakers provides crystal-clear sound for your relaxation playlist.
Medical-Grade Red Light 192-diode LED panel offers 650nm red light therapy combined with chromotherapy for skin health and mood enhancement.
Safety First Low EMF certified (tested by NASA-award winning facility), non-toxic construction, and 8mm tempered glass for maximum heat retention.

Benefits of Infrared

  • Deep Detox: Spectrum Plus heaters remove 17% more toxins like cholesterol, heavy metals, and uric acid.
  • Faster Recovery: Increased blood flow delivers concentrated oxygen to muscles, creating more energy to heal.
  • Natural Pain Relief: Reap the benefits of a more natural pain remedy with every session.
  • Heart Health: Lowers blood pressure and maintains heart health by producing a cleaner sweat.

Technical Specifications

Model: Finnmark FD-4 Trinity

Dimensions (Exterior) 48" W x 48" D x 83" H
Dimensions (Interior) 44" W x 45" D x 75" H
Capacity 2 Person
Heater 1 (Infrared) Spectrum Plus™ & Carbon (1,750W)
Heater 2 (Traditional) Harvia Vega Compact 1.9kW (Stainless Steel)
Max Temperature IR: 170°F | Traditional: 190°F
Heater Dimensions 11" W x 11" D x 21" H
Weight 437 lbs (approx.)
Electrical 120V (Requires separate connections for IR and Heater)

Warranty Information

The Finnmark FD-4 Trinity is backed by a manufacturer's warranty for peace of mind.

Coverage Period 2-Year Warranty (Consumer Use)

Conditions:

  • Covers defects in material and workmanship.
  • Warranty is void if the heater is installed incorrectly or without stones.
  • Sauna heater stones are significant to safety; user is responsible for proper maintenance to keep warranty valid.

Our Mission

Person in a white robe standing in a modern sauna room with a large window and bathroom setup. Person in a white robe standing in a modern sauna room with a large window and bathroom setup.

Wellness Without Boundaries

Trusted By Global Brands

At Healari, we believe wellness should move with you. Each month, we partner with leading wellness brands to commission exclusive builds—bringing you cutting-edge, curated solutions that adapt to your lifestyle, not the other way around.

Whether you’re an overworked parent, a traveling athlete, or simply seeking balance, our products deliver luxury, comfort, and recovery wherever life takes you.

Healari empowers ambitious lives to relax, recharge, and restore—without compromise.