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THERMASOL

ASTRA 4-Person Indoor Traditional Steam Sauna | By Thermasol

ASTRA 4-Person Indoor Traditional Steam Sauna | By Thermasol

$33,799.97 USD
$33,799.97 USD
Sale Sold out
Shipping calculated at checkout.
Door Options

⚠️ Final Sale — Non-Returnable

This product is non-returnable due to safety, hygiene, and quality control standards. If your item arrives damaged or incorrect, contact us within 48 hours at support@fr33domwellness.com. See our full Return & Refund Policy for details.

ThermaSol · Astra · 4-Person Indoor Semi-Panoramic Glass Sauna Cabin · Corner Layout · Brushed Tyrol Wood · Harvia Virta · RGB LED · Made In USA · SAK90471

Corner Layout Design Semi-Panoramic Transparent Glass Panels Brushed Tyrol Wood Panels Thermo-Aspen Benches Harvia Virta Heater Multi-Layer Wood Fibre Insulation RGB LED Colour Therapy 4 Person · Indoor Flat-Pack · Straightforward Assembly 🇺🇸 Made In The USA

The ThermaSol Astra is a 4-person indoor semi-panoramic glass sauna cabin built around a corner layout that fits naturally into home gyms, spa rooms, and dedicated wellness spaces. Brushed Tyrol wood panels, transparent semi-panoramic glass, thermo-aspen benches, Harvia Virta heater, eco-friendly multi-layer wood fibre insulation, and RGB LED colour therapy — all in a flat-pack format with straightforward assembly. Designed and made in the USA.

Serene. Minimal. Open. The Astra brings the quietest version of sauna culture into the corner of your home — and fills the space with warmth, light, and calm. 🌿

👥
Capacity
4 People
📐
Layout
Corner Fit
🔥
Heater
Harvia Virta
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Installation
Indoor

ThermaSol Indoor Sauna Range — Compare Models

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Aalto
4 Person · Semi-Panoramic · Standard Layout · Brushed Tyrol Wood
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Astra
4 Person · Semi-Panoramic · Corner Layout · Harvia Virta · Fits Any Corner
Corner Layout
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Lumaria
Up To 5 Person · Full Panoramic Glass · Solarium Design · 2 Sizes

Premium Material System — Every Layer Considered

🪟
Glass Panels
Semi-Panoramic Transparent Glass
Transparent semi-panoramic panels in a corner configuration — open, modern, and airy. Eliminates the enclosed feeling of traditional solid-walled saunas while complementing any interior design style.
🌲
Walls · Seating
Brushed Tyrol Wood + Thermo-Aspen Benches
Textured brushed Tyrol wood panels bring warmth and depth to the glass-forward aesthetic. Thermo-aspen benches resist moisture and warping — comfortable, stable, and built for daily long-term use.
🌿
Insulation
Eco-Friendly Multi-Layer Wood Fibre
Sustainably sourced multi-layer wood fibre insulation locks heat inside the cabin with exceptional efficiency — keeping operating costs low and temperatures consistently high every session.
🔥
Heater
Harvia Virta
Rapid, powerful, energy-efficient Finnish engineering. Paired with the wood fibre insulation, the Virta reaches therapeutic temperatures quickly and holds them with minimal energy waste.
📐 Corner layout design — fits any corner, any room — designed to nestle naturally into any indoor corner, maximising floor space without sacrificing interior volume. Home gym, spa room, or dedicated wellness space — the Astra belongs in the room, not against it.
🪟 Semi-panoramic transparent glass panels — open, modern, airy — replaces the solid walls of traditional saunas with a light-filled interior that feels genuinely spacious. The corner glass configuration creates openness that conventional saunas simply cannot replicate.
🌲 Brushed Tyrol wood panels — refined, textured, contemporary — warm textured wood in deliberate contrast with the open glass panels. The brushed finish adds depth and contemporary character without overwhelming the clean, minimal aesthetic.
🛋️ Thermo-aspen benches — moisture-resistant, cool to touch — naturally resists moisture absorption and warping over years of sauna use. Remains comfortably cool at elevated temperatures — extended sessions without discomfort.
🔥 Harvia Virta — rapid, powerful, energy-efficient — delivers rapid heat generation and the energy efficiency Harvia's Finnish engineering is known for. Brings the Astra to therapeutic temperatures quickly and holds them with minimal waste session after session.
🌿 Eco-friendly multi-layer wood fibre insulation — sustainably sourced and performance-optimised. Heat stays inside the cabin where it belongs, reducing energy consumption and delivering a consistently intense sweat with low operating costs.
💡 Integrated RGB LED colour therapy — complete ambiance control — calming blue for meditation, warm amber for deep relaxation, energising red for post-workout recovery. Every session dialled to your exact mood and intention.
🇺🇸 Made in the USA — flat-pack with straightforward assembly — designed and manufactured in the United States. Ships flat-packed with detailed step-by-step assembly instructions — no professional installer required.
❤️
Circulation
Regular heat exposure improves blood flow and cardiovascular conditioning — benefits that compound meaningfully with consistent daily or weekly practice.
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Muscle Recovery
Powerful heat eases muscle tension, reduces soreness, and accelerates recovery — an effective daily protocol for any home gym or fitness-focused environment.
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Stress Relief
The Astra's open glass aesthetic, Tyrol wood warmth, and RGB colour therapy combine to create a genuinely restorative environment for deep nervous system decompression.
😴
Better Sleep
The post-sauna cool-down strongly promotes sleep onset and more restorative rest — making a regular evening session one of the most effective daily sleep protocols available.
🎨
Colour Therapy
RGB chromatherapy allows full session personalisation — different colours for different moods, protocols, and intentions. Every session can feel completely different.
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Home Value
A semi-panoramic indoor sauna is a premium home addition — a visually distinctive focal point that adds genuine property value and lifestyle quality to any wellness space.
🇺🇸 Designed and made in the USA — ThermaSol's US design and manufacturing reflects a commitment to quality, craftsmanship, and the long-term performance a home wellness investment demands.
📦 Flat-pack delivery — straightforward assembly, no construction headaches — arrives flat-packed with detailed step-by-step assembly instructions. Designed for straightforward installation — no professional installer or significant construction disruption required.
✅ Warranty — USA Made
The ThermaSol Astra is backed by ThermaSol's warranty covering manufacturing defects in materials and construction under normal residential use conditions. Contact us for full warranty terms and conditions.
ThermaSol Astra — Specification Sheet View PDF

🚚 Delivery estimated within 12–13 weeks. Shipping costs calculated at checkout.

The Astra ships flat-packed with detailed assembly instructions. No professional installation required. Contact us before ordering with any questions about delivery access or assembly requirements for your specific space.

📐 Corner Layout  ·  🪟 Semi-Panoramic Glass  ·  🌲 Brushed Tyrol Wood  ·  🔥 Harvia Virta  ·  💡 RGB LED  ·  🇺🇸 Made In USA

ThermaSol Astra — Serene. Minimal. Yours. 🔥

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