Finnmark FD-4 Trinity hybrid sauna front angled view with glass door and red-lit interior

Finnmark FD-4 Trinity 2-Person Indoor Hybrid Sauna (Infrared & Traditional)

Name: Finnmark FD-4 Trinity 2-Person Indoor Hybrid Sauna (Infrared & Traditional)
Brand: Finnmark Designs
SKU: FD-KN004
Price: 7795.00 USD
Availability: InStock

$7,795.00

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Frequently bought together

The Finnmark FD-4 Trinity combines UL-listed Spectrum Plus™ infrared heaters with a Harvia Vega Compact 1.9kW traditional heater, so you can enjoy infrared warmth, traditional steam, or both in one 2-person sauna. Splash water over the included stones for a classic steam session, then switch to infrared when you want deep, penetrating heat.

Red Light Therapy, a touchscreen controller with Bluetooth audio and a two-tier bench round out the experience, all inside an antimicrobial Western Red Cedar interior with a Thermal Plus™ Aspen exterior.

3-in-1 hybrid: Spectrum Plus™ infrared heaters, a traditional steam heater and red light therapy in one sauna

Harvia Vega Compact 1.9kW traditional heater with built-in controls, included

1 box of Harvia AC3000 sauna stones (44 lbs) included

Spectrum Plus™ UL-listed infrared heaters deliver mid and far infrared, with up to 25x more deep-penetrating heat than standard carbon panels, backed by a lifetime heater warranty

Red Light Therapy: 192-diode LED panel at 650nm plus color chromotherapy

V2 5-inch LCD touchscreen controller with Bluetooth audio

6-inch HiFi marine-grade speakers

Two-tier benching with antimicrobial Western Red Cedar benches

Antimicrobial Western Red Cedar interior that resists mold, bacteria and fungus

Thermal Plus™ Aspen exterior that will not rot, warp, decay or chip

8mm tempered glass door with gasket for excellent heat retention

Low EMF design, tested by a NASA award-winning testing facility

High-emissivity infrared heaters

Backed by a 10-year warranty

Capacity: 2 persons

Exterior dimensions: 48 in W x 48 in D x 83 in H

Interior dimensions: 44 in W x 45 in D x 75 in H

Door dimensions: 23.6 in x 67.9 in

Glass: 8mm tempered with gasket

Product weight: 437 lbs

Shipping weight: 485 lbs (ships LTL freight)

Infrared electrical: 120V, 1750W, 15A (NEMA 5-15P plug)

Harvia Vega Compact heater: 120V, 1.9kW, 20A (separate dedicated circuit)

Heater: Harvia Vega Compact 1.9kW, wall-mounted, built-in controls (sauna room size 70 to 106 cu ft)

Stones included: 1 box Harvia AC3000 (44 lbs)

Maximum temperature: 170°F infrared, 190°F with traditional heater

Certification: ETL listed

Model Number: FD-4

FREE Curbside Freight: Included on all continental US orders. Delivered on a pallet via liftgate truck to your driveway/curb.

Estimated Delivery: Typically arrives in 7–12 business days (dispatches in 3–5 business days).

Real-Time Tracking: Email tracking is sent as soon as your sauna ships.

Delivery Appointment: The freight carrier will call 24–48 hours in advance to schedule a delivery window.

Inspection Upon Arrival: Please inspect boxes before signing. Note any visible outer box damage on the driver's receipt, or refuse the shipment if severely damaged and contact us immediately.

Note: Delivery dates are estimates and are not guaranteed. Freight transit times may vary due to weather, location, or carrier delays. Placement inside a garage or covered area is strictly at the driver's discretion.

Assembly Manual (PDF)

Includes a 10-year manufacturer warranty on the sauna, plus 2-year coverage on the Harvia heater.