Use code USASPORTS for up to $1000 OFF select products
Use code USASPORTS for up to $1000 OFF select products
Skip to content
Finnmark FD-5 Trinity XL Infrared & Steam Sauna Combo

Finnmark FD-5 Trinity XL Infrared & Steam Sauna Combo

by Finnmark Designs
SKU FD-KN005
$8,995.00

✓ National Finnmark Authorized Dealer
✓ Price Match Guarantee
✓ Have a question? Call us: (888) 719-5781

Notify me when back in stock

Shipping: All authorized online dealers have the same lead time as us.

Best Price Online: Find a better price? We'll match or beat it!

Key Features

  • 3-in-1 Wellness System – Uniquely combines UL-listed Spectrum Plus™ infrared heaters, a traditional 4.5kW Harvia steam heater, and medical-grade Spectrum Red Light™ therapy in one unit.
  • Deep Penetrating Heat – Short-wave infrared technology delivers heat that is up to 25 times more effective than standard carbon heaters for superior detoxification and muscle relief.
  • Premium, Durable Construction – Features an antimicrobial Western Canadian Cedar interior to resist mold and bacteria, paired with a rot-resistant Thermal Plus™ Aspen exterior for longevity.
  • Spacious XL Design – Comfortably accommodates up to five people with an extra-large, two-tier bench system, making it perfect for families or social wellness sessions.
  • Advanced Controls & Audio – Equipped with a modern LCD touchscreen controller with Bluetooth connectivity and two 6" HiFi marine-grade speakers for a premium experience.
  • Certified Low EMF – Rigorously tested by a NASA award-winning facility to ensure minimal electromagnetic field exposure for your peace of mind.

Key Specs

  • Capacity: Up to 5 Persons
  • Heater Type: Combination Infrared (2700W), Traditional Steam (4.5kW), and Red Light Therapy (650nm)
  • Exterior Dimensions: 75"W x 64"D x 83"H
  • Interior Wood: Antimicrobial Western Canadian Cedar
  • Exterior Wood: Thermal Plus™ Aspen
  • Electrical Requirements: Two separate dedicated circuits required; 240V/15A for Infrared/Lights, 240V/30A for Traditional Heater (consult a licensed electrician)
  • Max Temperature: 170° F (Infrared) / 190° F (Traditional)
Finnmark FD-5 Trinity XL Infrared & Steam Sauna Combo - assembled indoor with yoga mat in front

Is this Sauna right for you?

This product is ideal for:

  • Wellness Enthusiasts seeking a comprehensive tool for detoxification, muscle recovery, improved circulation, and skin rejuvenation.
  • Homeowners looking to create a premium, multi-functional spa experience without dedicating space to multiple units.
  • Families & Couples with diverse wellness preferences, allowing one user to enjoy a traditional steam session while another prefers a gentle infrared sweat.
  • Athletes aiming to accelerate recovery, reduce inflammation, and soothe sore muscles after intense training.

Introduction

Experience the pinnacle of home wellness with the Finnmark FD-5 Trinity XL, the ultimate no-compromise sauna solution. This revolutionary 3-in-1 design from Finnmark Designs masterfully integrates three distinct therapeutic technologies into one luxurious cabin. You no longer have to choose between the deep, penetrating heat of infrared saunas and the invigorating, high-heat steam of traditional saunas. The Trinity XL delivers both, alongside the restorative power of medical-grade Red Light Therapy, offering a completely customizable and unparalleled wellness journey from the comfort of your home.

Why Choose This Model / Brand

  • Unmatched Versatility – The Trinity XL is one of the only saunas on the market to feature both true UL-listed infrared heaters and a powerful, Finnish-made Harvia traditional stove, not just a steam attachment.
  • Therapeutic Red Light – Includes a built-in, 192-diode Spectrum Red Light™ panel, a premium feature typically sold separately, designed to promote skin health and collagen production.
  • Superior Craftsmanship – Built with antimicrobial cedar and thermally treated aspen, this sauna is designed to resist decay, warping, and bacteria, ensuring years of reliable use.
  • Proven Safety & Performance – With UL-listed heaters and certified low-EMF technology, you can relax with confidence, knowing you're using a safe and effective wellness tool. For those with less space, the more compact Finnmark FD-4 Trinity offers similar combination benefits.

Full Feature List

  • UL-Listed Spectrum Plus™ Short-Wave Infrared Heaters
  • Harvia KIP 4.5kW Traditional Steam Sauna Heater with Vulcanite Stones
  • 192-Diode Medical-Grade Spectrum Red Light™ Therapy Panel (650nm)
  • Antimicrobial Western Canadian Cedar Interior
  • Thermal Plus™ Aspen Exterior (Resists Rot, Warping, and Decay)
  • Spacious Two-Tier Bench System
  • LCD Touchscreen Controller with Bluetooth
  • Two 6" HiFi Marine-Grade Speakers
  • 8mm Tempered Glass Door and Accents
  • Certified Low EMF Technology
  • High Emissivity Infrared Heaters for Maximum Efficiency

Full Specifications

Specification Value
Model FD-5 Trinity XL
Exterior Materials Thermo-Aspen
Interior Materials Western Canadian Cedar
Exterior Dimensions 75"W x 64"D x 83"H
Interior Dimensions 71"W x 57.5"D x 75.5"H
Capacity Up to 5 Persons
Infrared Heaters 2700W Spectrum Plus™
Traditional Heater Harvia KIP45B 4.5kW
Voltage 240V (Two separate circuits required)
Amperage 15A (IR) | 18.8A (Traditional Heater)
Plug Type Hardwired Installation Recommended
Max Temperature 170° F (IR) | 190° F (Traditional)
Product Weight 575 lbs
Shipping Weight 654 lbs
Glass Thickness 8mm Tempered Glass

Installation + Setup Info

Electrical Requirements

  • CRITICAL: This sauna requires two separate dedicated 240V circuits.
  • Circuit 1 (Infrared & Accessories): A 240V, 15-Amp circuit is needed to power the infrared heaters, lights, and control panel.
  • Circuit 2 (Traditional Heater): A 240V, 30-Amp circuit with appropriate gauge wiring is required for the 4.5kW Harvia traditional heater.
  • We strongly recommend hiring a licensed electrician to ensure proper and safe installation.

Assembly

  • The sauna arrives in a kit and requires assembly. Detailed instructions are included.
  • Assembly typically takes 2-3 hours and is best performed by at least two adults.

Frequently Asked Questions

What are the electrical requirements for the FD-5 Trinity XL?

This is a high-performance unit and requires two separate dedicated 240V circuits for safe operation. One 15-amp circuit powers the infrared system, and a separate 30-amp circuit is needed for the traditional Harvia steam heater. An electrician can help you determine the cost and feasibility of installation. To learn more about energy usage, read our guide on how much electricity a sauna uses.

Can I use the infrared and traditional steam heaters at the same time?

No, the two heating systems are designed to be used independently. You choose which type of session you want: a deep-penetrating infrared session or a high-heat traditional steam session. The control system allows you to easily switch between modes.

How many people can comfortably fit in this sauna?

The FD-5 Trinity XL is designed to comfortably accommodate up to five adults. Its spacious, two-tier bench system provides ample room for relaxation, making it one of our most popular 5-person saunas for families and social use.

What makes this sauna different from other 'combo' saunas?

Many combo saunas use infrared panels and add a small, underpowered steam generator. The Finnmark Trinity features a full-powered, Finnish-made 4.5kW Harvia heater with vulcanite rocks for an authentic traditional sauna experience, alongside UL-listed short-wave infrared heaters. It's truly two professional-grade saunas in one. If you only need infrared heating, the Finnmark FD-3 is an excellent alternative.

What kind of maintenance is required?

Maintenance is minimal. Regularly wipe down the benches with a damp cloth after use. Avoid using harsh chemical cleaners on the wood. For the infrared components, occasional cleaning is all that is needed. Our guide on how to clean an infrared sauna provides helpful tips for keeping your unit in pristine condition.

Shipping & Returns

  • FAST & FREE Shipping on most orders
  • United States Only
  • In stock items ship within 1-4 business days
  • Tracking info emailed once item ships
  • 30-day Return Policy

Find a better price online? We'll match or beat any price from an another online authorized dealer.

  • Low Price Guaranteed
  • We'll match or beat any price.
  • Email or call us with details.

Free Shipping

On Most US Orders

Expert Service

Ready To Serve You

Over 7,500 Verified Reviews

Join Our Community

Call or Text Anytime

(888) 719-5781