Finnmark FD-5 Trinity XL
The Finnmark FD-5 Trinity XL is the pinnacle of the Finnmark lineup — a 4-person
combination sauna that brings together full-spectrum infrared, traditional steam
heat, and red light therapy in the largest Trinity room available. Everything the
FD-4 does for two people, the FD-5 does for four, in a room spacious enough to make
every session feel genuinely communal rather than cramped.
Like all Finnmark Trinity saunas, the FD-5 is the only home sauna in the world to
combine UL-listed Spectrum Plus short-wave infrared panels with a real traditional
sauna heater — in this case the Harvia KIP 45B, a 4.5kW wall-mounted Finnish-made
heater loaded with vulcanite sauna stones. The infrared system delivers
deep-penetrating warmth through short-wave incoloy heaters, while the Harvia heater
lets you pour water directly onto the stones for authentic steam — the löyly
experience that defines Nordic sauna culture. Run them separately or together for a
session that no single-modality sauna can replicate.
Rounding out the Trinity system is the Spectrum Red Light panel — 192 LED diodes
producing 650nm red light at therapeutic intensity, adding a light therapy dimension
alongside every infrared or steam session. The infrared system runs on 240V at
2.7kW, providing the power needed to heat a 130 cu. ft. room effectively, while the
Harvia heater handles up to 210 cu. ft. on its own.
The interior is Western Canadian Red Cedar — naturally resistant to mold, bacteria,
and fungus. The Thermal Plus Aspen exterior will not rot, warp, decay, or chip.
Controls are managed through Finnmark's LCD touchscreen Controller 2.0 with
Bluetooth audio and 6" HiFi marine-grade speakers. Low EMF — independently verified
by a NASA award-winning testing facility. ETL / Intertek certified.
- 3-in-1: full-spectrum infrared + traditional steam + red light therapy
- Only home sauna combining UL-listed short-wave IR with a real traditional heater
- Harvia KIP 45B 4.5kW Finnish-made steam heater included — authentic löyly experience
- Spectrum Plus UL-listed short-wave incoloy IR heaters
- Spectrum Carbon 360 long-wave IR panels — 360° full-body coverage
- 192-diode 650nm red light therapy panel
- Up to 4-person capacity — extra-large 2-tier bench system
- Western Canadian Red Cedar interior — naturally mold & bacteria resistant
- Thermal Plus Aspen exterior — rot, warp & decay resistant
- 240V operation — 2.7kW infrared + 4.5kW traditional heater
- Low EMF — independently tested by a NASA award-winning facility
- Built-in LCD touchscreen Controller 2.0
- Bluetooth audio + 6" HiFi marine-grade speakers
- Chromotherapy lighting included
- 8mm tempered glass door with gasket
- Removable & adjustable feet for uneven surfaces
- ETL / Intertek certified
