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Finnmark FD-5 Trinity XL 4-Person Hybrid Sauna – Infrared & Steam Combo
by Finnmark
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3-4 person indoor hybrid sauna: infrared plus 4.5 kW traditional heater
The Finnmark FD-5 Trinity XL is an indoor hybrid for three to four people. It pairs 11 Spectrum Plus infrared heaters with a Harvia KIP45B 4.5 kW traditional heater, plus a Spectrum Red Light panel (650nm) and color lighting. The interior is clear A-grade Canadian Western red cedar with a Thermal Plus aspen exterior and fully insulated walls.
Best for: Families and friends who want infrared and traditional heat in a roomy indoor cabin.
Specifications at a glance
- Capacity: 3-4 persons
- Exterior: 74.8 in W x 63.8 in D x 83.1 in H
- Interior: 70.5 in W x 60.1 in D x 75.2 in H
- Benches: two-tier; top 70.5 in x 20.1 in, lower 70.5 in x 15.7 in
- Infrared heaters: 11 Spectrum Plus dual-wave
- Infrared electrical: 3,150W, 240V, 15 amp, NEMA 6-15P
- Traditional heater: Harvia KIP45B, 4.5 kW, 240V, 18.8 amp
- Infrared mode temperature: 170°F
- Red light panel: Spectrum Red Light, 650nm
- Manufacturer warranty: 10-year sauna, 2-year Harvia heater (see the warranty guide)
Space, power and setup
Measure the room, ceiling height, doorways and stairs before delivery. The infrared heaters use a 240V, 15 amp circuit, and the Harvia KIP45B needs 240V and 18.8 amp with an electrician for installation. Have a licensed electrician confirm the circuits for your home.
Questions buyers ask
What heaters does the FD-5 have?
11 Spectrum Plus infrared heaters plus a Harvia KIP45B 4.5 kW traditional heater.
What is included?
The Harvia KIP45B heater, the Spectrum Plus infrared heaters and the Spectrum Red Light panel are listed.
What power does it need?
Infrared: 240V, 15 amp, 3,150W (NEMA 6-15P). Harvia KIP45B: 240V, 18.8 amp, installed by an electrician.
What is the maximum temperature?
Infrared mode is listed at 170°F. A maximum for the traditional heater is not listed.
Helpful guides
Red light therapy vs. infrared sauna: how they differ | Cold plunge and sauna combo setups | Browse hybrid saunas
Not sure which size or configuration fits your space? Call 1-762-214-2594 (Mon-Sun 9am-9pm EST) or request a quote, and our product specialists will help you compare options and plan delivery and installation.
Intended for general wellness use, following the manufacturer's instructions. Not intended to diagnose, treat, cure, or prevent any disease or medical condition. Results vary.
- Hybrid heating: infrared plus Harvia KIP45B 4.5 kW traditional heater
- 11 Spectrum Plus dual-wave infrared heaters
- Spectrum Red Light panel (650nm) with color lighting
- Two-tier bench system
- Clear A-grade Canadian Western red cedar interior
- Thermal Plus aspen exterior with fully insulated walls
- Indoor design for three to four people
- Touchscreen controller
- Hi-fi audio
- UL Listed Spectrum Plus infrared heaters
| Capacity | 3-4 persons |
|---|---|
| Exterior dimensions | 74.8 in W x 63.8 in D x 83.1 in H |
| Interior dimensions | 70.5 in W x 60.1 in D x 75.2 in H |
| Top bench | 70.5 in W x 20.1 in D |
| Lower bench | 70.5 in W x 15.7 in D |
| Infrared heaters | 11 Spectrum Plus dual-wave (far and mid) |
| Infrared power | 3,150W, 240V, 15 amp |
| Infrared plug | NEMA 6-15P |
| Traditional heater | Harvia KIP45B, 4.5 kW, 240V, 18.8 amp (electrician required) |
| Infrared mode temperature | 170°F |
| Red light | Spectrum Red Light panel, 650nm |
| Interior wood | clear A-grade Canadian Western red cedar |
| Exterior | Thermal Plus Canadian aspen, fully insulated walls |
| Heater certification | Spectrum Plus infrared heaters are UL Listed |
| Manufacturer warranty | 10-year sauna, 2-year Harvia heater (see the manufacturer's warranty guide) |
- ## The sauna
- Cedar and aspen cabin with fully insulated walls
- Two-tier bench system
- ## Heaters & controls
- 11 Spectrum Plus infrared heaters
- Harvia KIP45B 4.5 kW traditional heater
- Touchscreen controller
- ## Accessories
- Spectrum Red Light panel (650nm)
Shipping & Delivery: Most orders ship free within 1-2 business days via curbside delivery. Need it brought inside and set up? Choose White Glove Delivery at checkout and our team will follow up with pricing and scheduling.
Warranty: Warranty coverage varies by manufacturer and product. Contact our team before purchase for the specific warranty terms on this item, or reach out any time after your purchase with a manufacturer defect concern — we'll help you through the process.
Product manuals, installation guides, and spec sheets for this item are available on request. Contact our product specialists and we'll send you the documentation.
Here is what ships with this model. Everything in the checklist is included in the price; anything marked Optional is not included unless you add it.
The sauna
- Cedar and aspen cabin with fully insulated walls
- Two-tier bench system
Heaters & controls
- 11 Spectrum Plus infrared heaters
- Harvia KIP45B 4.5 kW traditional heater
- Touchscreen controller
Accessories
- Spectrum Red Light panel (650nm)
Not sure which configuration you need? Call 1-762-214-2594 and our team will confirm exactly what arrives with your order.