Thermasol Astra Indoor Flat-Packed Sauna, Brushed Tyrol Wood Panels, Harvia Virta 9 Kw Heater With Wi-Fi, Seats 3-4 People, Built In Usa.
14-Astradl Product Image
14-Astradl Product Image
14-Astradl Product Image
Thermasol Astra Sauna Cabin Reference Image 1
Expert help that stays with you

Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

Specs
Weight1543 lbs
Dimensions85.4 × 85.4 × 83.0 in
Exterior Longest Side (in)Maximum Exterior Length of the longest side when assembled.85.4
Exterior Shortest Side (in)85.4
Exterior Height (in)Maximum exterior height from earth to roof peak83.0
KW
People3, 4
Made in
MaterialsBrushed Tyrol Wood Panel + Thermo-Aspen Benches
Interior MaterialsBrushed Tyrol Wood Panel
Exterior MaterialsBrushed Tyrol Wood Panels
InsulationYes – European StandardEuropean Sauna Construction Standards consist of a thick, insulated wall assembly that maximizes the drying potential of interior and exterior cladding. The typical wall assembly consists of Exterior Cladding -> Air Gap -> Rain Barrier -> Studded Wall with Mineral Wool Insulation -> Foil Radiant Barrier with Taped Seams -> Air Gap -> Interior Cladding.
Wi-Fi OptionYes
DIY FriendlyDIY Friendly Saunas means a professional is not required for the build. Basic tools like a drill, hammer, and level are typically required. With Sauna Marketplace, you do not risk your warranty by assembling a sauna yourself. If you prefer a professional installation, please reach out to the Sauna Marketplace team so we can check for a trusted installer near you.Yes*An electrician is still required for all electrical work!
Warranty1
ModelAstra
LineCube
Shipping CostPlease inquire if shipping outside the continental USA.Free
Shipping MethodFlatbed – Forklift or Unloading Crew Required
Door SideLeft, Right
BrandThermaSol
Sub-BrandAstra
ManufacturerThermaSol
Sauna TypeIndoor
Heater TypeElectric
Heater BrandVirta
ControllerCX45
GlassTransparent Corner Glass
UPC652592097939
Lead Time4-8 Weeks
FeaturesBrushed Tyrol Wood Panel Interior, Thermo-Aspen Benches, Corner Glass Layout, L-Shaped Bench Configuration, RGB LED Color Lighting, Wi-Fi-Enabled Harvia Virta Heater, Flat-Packed Indoor Assembly
Bench Depth (in)24
AssemblyFlat-Packed Indoor
Attachments
Gallery
Thermasol Astra Indoor Flat-Packed Sauna, Brushed Tyrol Wood Panels, Harvia Virta 9 Kw Heater With Wi-Fi, Seats 3-4 People, Built In Usa.
14-Astradl Product Image
14-Astradl Product Image
14-Astradl Product Image
Thermasol Astra Sauna Cabin Reference Image 1

    ThermaSol Astra Sauna Cabin | 9.0 kW

    Hall closet or guest-room corner? The Astra is the indoor ThermaSol model built for households that have closet-conversion space rather than a dedicated room. 85.4 by 85.4 inches with corner glass and an L-bench, so it tucks into a finished-basement nook. Same 9 kW Harvia Virta as the larger Aalto. Brushed Tyrol panel interior, Thermo-Aspen benches, CX45 controller. Pick door side at checkout. Four-to-eight-week build, free shipping.

    Build Your Quote:

    $23,604.00

    Door Orientation

    Choose which side the door is hinged on. Stand facing the front of the cabin.

    Share your selected heater size and add-ons. Prices and availability are confirmed when the link is opened.

    We added you to this product's waitlist and we'll send you an email when the product is available.

    Leave Waitlist

    This product is currently sold out.

    No worries! Enter your email, and we'll let you know as soon as it's back in stock.

    Zero Interest Payments:

    Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.

    Pay with HSA/FSA:

    We teamed up with FLEX to make HSA/FSA payments easier than ever.

    ThermaSol

    The ThermaSol indoor sauna lineup

    The Astra is the ThermaSol indoor we recommend when the buyer’s available square footage is a corner, not a room. Its corner-glass layout and L-shaped bench were designed for households that have a hall closet, a basement nook, or an office corner to give over, rather than a dedicated spa room.

    Same heater, smaller envelope

    The Astra carries the same 9 kW Virta spec as the larger Aalto in a cabin with 14 cu ft less exterior volume. Practically, that means a shorter heat-up window: roughly 25 to 40 minutes indoors. The corner-glass detail makes the bench feel bigger than 85 inches square.

    Spec sheet

    • Footprint: 85.4 by 85.4 inches, 83 inches tall, 350 cu ft exterior volume
    • Capacity: 3 to 4 adults
    • Heater: 9 kW Harvia Virta with Wi-Fi; CX45 controller
    • Glass: transparent corner layout; L-shaped 24-inch Thermo-Aspen bench
    • Interior: brushed Tyrol; Exterior: Brushed Tyrol wood panels
    • Flat-packed indoor; DIY friendly; Lead time: 4 to 8 weeks
    • Designed and crafted in the USA by ThermaSol

    FAQ

    How many people fit?

    Three to four adults across the L-bench.

    How long does it take to heat up?

    About 25 to 40 minutes indoors.

    Do I need an electrician?

    Yes.

    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.

    Expert help that stays with you

    Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

    Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

    We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

    Sauna and heater customers also receive free shipping on sauna accessories for life.

    Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

    Specs
    Weight1543 lbs
    Dimensions85.4 × 85.4 × 83.0 in
    Exterior Longest Side (in)Maximum Exterior Length of the longest side when assembled.85.4
    Exterior Shortest Side (in)85.4
    Exterior Height (in)Maximum exterior height from earth to roof peak83.0
    KW
    People3, 4
    Made in
    MaterialsBrushed Tyrol Wood Panel + Thermo-Aspen Benches
    Interior MaterialsBrushed Tyrol Wood Panel
    Exterior MaterialsBrushed Tyrol Wood Panels
    InsulationYes – European StandardEuropean Sauna Construction Standards consist of a thick, insulated wall assembly that maximizes the drying potential of interior and exterior cladding. The typical wall assembly consists of Exterior Cladding -> Air Gap -> Rain Barrier -> Studded Wall with Mineral Wool Insulation -> Foil Radiant Barrier with Taped Seams -> Air Gap -> Interior Cladding.
    Wi-Fi OptionYes
    DIY FriendlyDIY Friendly Saunas means a professional is not required for the build. Basic tools like a drill, hammer, and level are typically required. With Sauna Marketplace, you do not risk your warranty by assembling a sauna yourself. If you prefer a professional installation, please reach out to the Sauna Marketplace team so we can check for a trusted installer near you.Yes*An electrician is still required for all electrical work!
    Warranty1
    ModelAstra
    LineCube
    Shipping CostPlease inquire if shipping outside the continental USA.Free
    Shipping MethodFlatbed – Forklift or Unloading Crew Required
    Door SideLeft, Right
    BrandThermaSol
    Sub-BrandAstra
    ManufacturerThermaSol
    Sauna TypeIndoor
    Heater TypeElectric
    Heater BrandVirta
    ControllerCX45
    GlassTransparent Corner Glass
    UPC652592097939
    Lead Time4-8 Weeks
    FeaturesBrushed Tyrol Wood Panel Interior, Thermo-Aspen Benches, Corner Glass Layout, L-Shaped Bench Configuration, RGB LED Color Lighting, Wi-Fi-Enabled Harvia Virta Heater, Flat-Packed Indoor Assembly
    Bench Depth (in)24
    AssemblyFlat-Packed Indoor
    Attachments
    Gallery
    Thermasol Astra Indoor Flat-Packed Sauna, Brushed Tyrol Wood Panels, Harvia Virta 9 Kw Heater With Wi-Fi, Seats 3-4 People, Built In Usa.
    14-Astradl Product Image
    14-Astradl Product Image
    14-Astradl Product Image
    Thermasol Astra Sauna Cabin Reference Image 1

      A LITTLE HELP FROM THE BENS

      Let’s find your sauna.

      Tell us where it’s going, who’s joining you, and whether you want room to stretch out. Bring a photo or rough dimensions. The Bens can help you compare saunas and work through the heater, assembly, and delivery details.

      Find your sauna with a Ben

      Make room for how you’ll use it.

      A person count only tells you so much. Look at the bench layout and usable length, especially if you want to lie down.

      Compare saunas

      Building a custom room?

      Lay out the room, try wood and bench options, and see your materials come together in SaunaDesignPro.

      Start designing your sauna