Finnmark FD-5 Trinity XL Infrared & Steam Sauna Combo

Where high-performance wellness meets everyday luxury—elevate your home, elevate your health.

4-Person Home Sauna with Infrared and Traditional Sauna Heater, 75"W x 64"D x 83"H

Experience the pinnacle of home wellness with the Finnmark Trinity XL 3-IN-ONE Sauna—an advanced, full-spectrum sanctuary that brings infrared heat, true Finnish steam, and medical-grade red light therapy together in one extraordinary system. Designed for those who refuse to compromise, this multi-modality sauna delivers a complete wellness ritual that restores, energizes, and transforms.

Engineered with Finnmark’s UL-listed Spectrum Plus™ infrared panels, the Trinity XL delivers powerful short-wave far-infrared heat—proven to penetrate deeply into muscles and joints and promote intense detoxification, up to 25x more effectively than standard carbon heaters. Achieve temperatures up to 170°F for a fast, deeply therapeutic infrared experience.

For those who love the tradition of steam, the 4.5kW Finnish-style heater brings authentic sauna bathing into your home. Vulcanite sauna stones radiate even, enveloping heat and allow you to ladle water onto the rocks for a rich burst of steam—providing all the benefits and intensity only a true steam sauna can offer.

Completing this all-in-one wellness environment is true medical-grade Spectrum Red Light™ Therapy. These low-level wavelengths work beneath the skin’s surface to support collagen production, improve recovery, enhance cellular energy, and promote radiant skin—an ideal complement to your heat therapy ritual.

With its expansive cabin, premium craftsmanship, and unmatched functionality, the Trinity XL 3-IN-ONE is the ultimate expression of holistic home wellness. Why settle for one modality when you can have it all?

Traditional Sauna Heater Included.

Spectrum Plus™ UL-Listed Short-Wave Infrared Heaters
Delivers up to 25x deeper heat penetration than standard carbon panel heaters for unmatched therapeutic intensity.

Spectrum Red Light™ Therapy Panel
Medical-grade 192-diode LED system producing restorative 650nm red light therapy, paired with chromotherapy for enhanced mood and recovery.

Antimicrobial Canadian Cedar Interior
Naturally resistant to mold, bacteria, and fungus for a clean, healthy environment.

Thermal Plus™ Aspen Exterior
Engineered to never rot, warp, decay, or chip—offering one of the most durable, health-forward sauna builds on the market.

True 3-in-1 Sauna Experience
The only combination sauna featuring UL-listed infrared heaters paired with a traditional Harvia heater for high-heat steam, plus integrated medical-grade red-light therapy.

Advanced LCD Wi-Fi Touchscreen Controls
Built-in smart control panel with Bluetooth audio for a seamless, connected sauna experience.

Premium Audio & Construction
6" Hi-Fi speakers and 8mm tempered glass ensure immersive sound and optimal thermal retention.

Extra-Large Two-Tier Bench System
Designed for comfort, flexibility, and preferred heat positioning.

Low EMF Engineering
Independently tested by a NASA award-winning facility to ensure extremely low EMF output.

High-Emissivity Infrared Heaters
Maximizes infrared output for faster, more efficient therapeutic benefits.

Harvia KIP Series B 4.5kW Traditional Heater

• Wall-mounted stainless steel construction

• 4.5kW output for sauna rooms 100–210 cu. ft.

• Requires minimum 50 lbs of stones (Harvia AC3000); consider an extra box for optimal fit and performance

• Built-in controls with 240V/1PH or 208V/3PH operation

• Industrial-grade, replaceable heating elements

• Large rock capacity with direct rock-to-element contact

• UL-listed and crafted in Finland

• Dimensions: 16"W x 11"D x 24"H

• Consumer 2-Year Warranty

• Proper stone installation and maintenance required to preserve warranty

Included Components

• Bottom, Top, Back, Front, Left & Right Panels

• Tempered Glass Door

• Bench Support & Bench Top

• Heater Cable & Floor Cable

• Power Supply Unit & Power Cable

• Interior Heater Connections with Wood Cover

• Door Handle (with 2 Screws)

• Infrared Sauna Heater Panels

• Harvia KIP Series B 4.5kW Sauna Heater

• 1 Box of Harvia AC3000 Sauna Stones (44 lbs)*

• Spectrum LED Near Infrared Ceiling Lights

• Medical-Grade Spectrum Red Light Therapy Panel

• Controller 2.0: Built-In LCD Wi-Fi Touchscreen with Bluetooth

• ETL Certification

• Limited Warranty

*Each natural stone varies; adding a second box is recommended for ideal selection.

Model: FD-5
Exterior Material: Thermo-Aspen
Interior Material: Western Canadian Cedar
Voltage: 240V
Infrared Power: 2700W
Amperage: 15A | TBD
Plug Type: NEMA 6-15
Maximum Temperature: 170°F (Infrared) | 190°F (Traditional)

Interior Dimensions: 71"W × 57.5"D × 75.5"H
Exterior Dimensions: 75"W × 64"D × 83"H
Sauna Room Volume: 130 cu. ft.

Door Size: 23.625"W × 68.875"H
Door Handle Size: 1.5"W × 13.25"H
Glass Thickness: 8mm with gasket

Product Weight: 575 lbs
Shipping Dimensions: 80"W × 40"D × 83"H
Shipping Weight: 840 lbs

Harvia KIP45B Heater Specifications

Model: KIP45B
Kilowatt Rating: 4.5 kW
Fuel Type: Electric
Recommended Room Size: 100–210 adjusted cu. ft.
Voltage: 240V
Phase: 1PH
Amperage: 18.8A

Heater Weight: 40 lbs
Shipping Weight (with stones): 84 lbs

Dimensions:

• Width: 16" (406mm)

• Depth: 11" (279mm)

• Height: 24" (609mm)

About Finnmark Designs

Finnmark Designs is a leader in premium infrared sauna innovation, known for combining advanced heating technology with exceptional craftsmanship. With a commitment to wellness, performance, and safety, Finnmark has set a new standard in the infrasauna industry—engineering products that deliver deeper therapeutic benefits, higher temperatures, and unmatched durability.

What truly distinguishes Finnmark is its pioneering approach to infrared heating. They are the only manufacturer to integrate UL-listed Spectrum Plus™ short-wave heaters with 360° long-wave carbon infrared panels, creating a full-spectrum experience that outperforms traditional infrared saunas in heat penetration, efficiency, and overall results. Each sauna is thoughtfully designed to deliver maximum therapeutic coverage and consistent, high-quality heat distribution.

Finnmark’s dedication to purity and longevity is reflected in their material choices. Their interiors feature antimicrobial Western Canadian cedar, while their exteriors are crafted from Thermal Plus™ Aspen, an eco-friendly wood treated for extreme durability. This ensures every sauna not only performs at a superior level but also maintains a clean, hygienic environment for years of use.

With thousands of units sold worldwide and a reputation built on innovation, safety, and reliability, Finnmark Designs continues to be a trusted manufacturer for those seeking a truly elevated infrared sauna experience.

Finnmark Designs Infrared Sauna Warranty

Finnmark Certification

ETL Certification

Owner's Manual

Operation Manual

Specification Sheet