The ThermaSol indoor sauna lineup
The Lumaria Large is the indoor ThermaSol model cabin sized to feel like a real room, not a closet conversion. 86.6 by 86.6 inches, 360 cu ft, with a four-to-five-person bench plan and a transparent panoramic glass front.
Spec sheet
- Footprint: 86.6 by 86.6 inches, 83 inches tall, 360 cu ft
- Capacity: 4 to 5 adults
- Heater: 9 kW Harvia Virta with Wi-Fi; CX45 controller
- Glass: transparent panoramic front
- Interior: brushed Tyrol; 24-inch Thermo-Aspen benches
- Exterior: Brushed Tyrol wood panels; European-standard insulation
- Flat-packed indoor; DIY friendly; left or right door at checkout
- Lead time: 4 to 8 weeks; Designed and crafted in the USA by ThermaSol
Where it fits
This is the cabin we recommend when a household has a basement room or spa addition to give over and wants the indoor footprint to read as built-in. The Tyrol panel interior runs vertically across all three opaque walls; benches are full 24-inch deep.
FAQ
How many people fit?
Four to five adults.
How long does it take to heat up?
30 to 45 minutes indoors.
Do I need an electrician?
Yes; 240V circuit.
What’s the warranty?
One year manufacturer warranty.
What’s the lead time?
4 to 8 weeks.
Shipping
Free shipping included. Indoor cabins ship flat-packed via flatbed trailer with pre-assembled panels and detailed installation instructions. Assembly typically takes two people, basic tools, and a few hours. A licensed electrician handles the heater hookup. A forklift is recommended for unloading, but the unit can also be offloaded manually piece-by-piece with three or four people in roughly 30 to 60 minutes. Indoor cabins sit on existing flooring (must be level and water-resistant: concrete, tile, vinyl, or laminate). Cabins are freestanding and can be disassembled and relocated. We notify customers two weeks before scheduled delivery.
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