The ThermaSol outdoor sauna lineup
The Nordic Misty Medium is the version of the Nordic Misty family that gets specified most often. four to five on liftable benches inside a 458 cu ft cabin, with tinted panoramic glass turning the front wall into a window.
What’s in the cabin
- Footprint: 91 by 87 inches, 100 inches tall, 458 cu ft
- Capacity: 4 to 5 adults
- Heater: 9 kW Harvia Virta (Wi-Fi) or Legend 240 wood-burning
- Controller: Harvia CX45
- Exterior: thermally modified spruce; Interior: thermally modified aspen, liftable benches
- Glass: tinted panoramic; European-standard insulation
- Built in Finland by Kirami
Why the Wi-Fi pairing matters
The CX45 talks to the Virta through the Harvia app, so a phone tap from the kitchen starts the warm-up. The Legend 240 trades the app for chimney charm. We know this heater pairing from the supplier spec sheets.
Built by Kirami in Finland
Nordic Misty Medium is sold in Europe as the Kirami FinVision® -sauna M Misty. Kirami is a family-run Finnish manufacturer that builds these cabins from start to finish at their own factory in Sastamala, Finland. The FinVision® line carries the Finnish Key Flag Symbol (Avainlippu): the credential that certifies Finnish-designed, Finnish-manufactured, and built from Finnish materials.
Finnish sauna culture is inscribed on UNESCO’s Representative List of the Intangible Cultural Heritage of Humanity. The Kirami FinVision® line brings that tradition out of the Finnish country sauna and into a fully assembled, plug-and-play module that arrives on a flatbed.
Kirami joined the Harvia Group in May 2021, so the heater you choose and the cabin it sits in are now sister-company products engineered together. The integrated LED lighting wires into the Harvia Xenio control panel, which means one controller for heat, time, and ambiance.
Finnish ventilation engineering: fresh air enters through the intake on the heater side wall; spent air exhausts through the vent at the opposite upper back corner. Continuous airflow during a session without the cold drafts that plague poorly ventilated outdoor saunas.
Kirami construction details
Same panoramic window construction as the Small: double-glazed grey tempered selective glass with argon-gas insulation between the panes. LED strips run under the lower bench and at the top of the backrest, wired into the Harvia Xenio control panel. Heat-treated aspen interior in Kirami’s words has “a gentle and inviting atmosphere” whose dark colour and soft scent draws in “even those who are not used to the outdoor sauna.” Roller-latch glass door, non-locking by Finnish safety regulation; door side selected at checkout.
FAQ
How many people fit?
Four to five adults across the L-bench.
How long does it take to heat up?
The 9 kW Virta hits bathing temperature in 45 to 60 minutes.
Do I need an electrician?
Yes. The Virta needs a 240V hookup.
What’s the warranty?
Two years on cabin and heater.
Can it stay outside year-round?
Yes.
What’s the lead time?
Twelve weeks from order.
Shipping
Free shipping included. Outdoor cabins ship fully assembled via flatbed trailer. A forklift or crane is required at delivery for placement; manual offloading is not recommended due to size and weight. A licensed electrician handles the heater hookup. We notify customers two weeks before scheduled delivery so the site is ready. The path from the truck to the placement pad must be clear and accessible. Pad should be a firm, level surface with slight drainage runoff: concrete, decking, pavers, or compacted gravel.
Optional hands-on installation
If your delivery timing aligns with our calendar, founders Ben Burger or Ben Frizzell will travel to help with the install in person. The Bens have airdropped into builds with customers across the country since launching the marketplace. This is offered for a limited time and depends on schedule availability. Ask before checkout to see whether your delivery window works.
Prebuilt
Sauna Brushes
Vents