
Real help, start to finish
Questions on fit, power or delivery? Call or email us. We stay your first contact after delivery, warranty included.
Shipping shown upfront
Your exact shipping cost is shown at checkout before you pay.
Covered if anything is wrong
Change-of-mind returns are not accepted on this item. Damaged or defective items are replaced. Return policy
Description
The ThermaSol Astra is an indoor corner sauna cabin for 3 to 4 people. Brushed Tyrol wood panels frame two walls of semi-panoramic glass, which keeps the cabin feeling open in a bathroom, home gym or spa room.
Interior
The benches are thermo aspen, a heat-treated wood chosen because it resists moisture and warping. Multi-layer wood fiber insulation holds the heat in, and RGB LED lighting with its own control is built in.
Heat and controls
A Harvia Virta 9 kW electric heater with Wi-Fi warms the cabin, run by a Harvia Xenio CX45 digital control with Wi-Fi and the MyHarvia app.
Door side
Choose the door on the left or right side to fit your room layout.
What's included
- Flat-packed indoor sauna
- Harvia Virta 9 kW sauna heater with Wi-Fi
- Harvia Xenio CX45 digital control with Wi-Fi
- Harvia AC3020 sauna stones (3)
- Temperature sensor
- Headrests (2)
- Wood platform
- MyHarvia app
- User manual
Specifications
- Model: 14-ASTRADL (door left), 14-ASTRADR (door right)
- Capacity: 3 to 4 people
- Dimensions: 85.4 x 85.4 x 83.0 in (W x D x H)
- Net weight: 1,323 lb
- Heater: Harvia Virta 9 kW electric, Wi-Fi
- Electrical: 240V single phase, 37.5A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 9 kW, per Harvia). Hardwired by a licensed electrician.
- Control: Harvia Xenio CX45, Wi-Fi, MyHarvia app
- Exterior: brushed Tyrol wood panels
- Interior: thermo aspen benches
- Layout: corner, semi-panoramic transparent glass
- Insulation: multi-layer wood fiber
- Bench depth: 24 in
- Lighting: RGB LED color light with control
- Door: single door, left or right side
- Delivery: flat-packed with assembly instructions
- Use: indoor
- Order type: made to order
Electrical and site prep
The heater is a Harvia Virta 9 kW electric model. Have a licensed electrician confirm the supply and circuit before the sauna arrives. Our sauna electrical requirements guide covers what to ask.
Made to order. Made-to-order items are not returnable once ordered.
Related
Browse indoor saunas and traditional saunas, or check fit with our sauna size calculator.
Sauna use is intended for general relaxation and wellness. It is not a treatment for any medical condition or a substitute for medical care. If you are pregnant, have a heart condition, low blood pressure, or another health concern, talk with your doctor before use.
Specifications
| Model | 14-ASTRADL (door left), 14-ASTRADR (door right) |
|---|---|
| Capacity | 3 to 4 people |
| Dimensions | 85.4 x 85.4 x 83.0 in (W x D x H) |
| Net weight | 1,323 lb |
| Heater | Harvia Virta 9 kW electric, Wi-Fi |
| Electrical | 240V single phase, 37.5A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 9 kW, per Harvia). Hardwired by a licensed electrician. |
| Control | Harvia Xenio CX45, Wi-Fi, MyHarvia app |
| Exterior | brushed Tyrol wood panels |
| Interior | thermo aspen benches |
| Layout | corner, semi-panoramic transparent glass |
| Insulation | multi-layer wood fiber |
| Bench depth | 24 in |
| Lighting | RGB LED color light with control |
| Door | single door, left or right side |
| Delivery | flat-packed with assembly instructions |
| Use | indoor |
| Order type | made to order |
Specifications from the manufacturer. Dimensions are approximate.
Shipping
We ship to the 48 contiguous U.S. states and Washington, DC. Your shipping cost is calculated at checkout and shown before you pay.
You will get an order confirmation right away and tracking by email when your order ships. Questions about timing for a specific item? Call (945) 280-3243 or email support@restoresuite.com before you order.
Delivery
Large items such as saunas, hot tubs and cold plunge tubs usually ship by freight. The carrier contacts you to schedule delivery. Please check the packaging and note any damage on the delivery receipt before you sign, then tell us within 48 hours so we can resolve it for you.
Before delivery day, measure doorways and hallways along the path to the install spot, and confirm the electrical requirement on the Specifications tab.
Warranty
30-day limited warranty against manufacturing defects
If this item has a manufacturing defect within 30 days of purchase, contact us with your order number and a photo or video of the issue and we will make it right.
Reviews
What delivery looks like

See it in detail
Manuals and documents
Official ThermaSol documents for this model. Opens as a PDF.

Why this sauna
An indoor corner sauna for 3 to 4 people with semi-panoramic glass, Tyrol wood panels and a Harvia Virta 9 kW heater.
- Corner layout with semi-panoramic glass.
- Tyrol wood panels with thermo aspen benches.
- Harvia Virta 9 kW heater with Xenio Wi-Fi control.
- Door on the left or right side.

Will it fit your space?
The numbers to check before you order. Full details are on the Specifications tab.
- Capacity
- 3 to 4 people
- Dimensions
- 85.4 x 85.4 x 83.0 in (W x D x H)
- Net weight
- 1,323 lb
- Electrical
- 240V single phase, 37.5A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 9 kW, per Harvia). Hardwired by a licensed electrician.
- Exterior
- brushed Tyrol wood panels
- Interior
- thermo aspen benches
Before you buy: what to know
Based on the manufacturer's specs, manuals and our research.
- The Astra is a corner cabin with two walls of semi-panoramic glass, 85.4 x 85.4 x 83.0 in. Measure both walls from the corner, and check the ceiling height.
- It ships flat-packed with assembly instructions, about 1,323 lb in all. Included are a 9 kW Harvia Virta with WiFi, a Xenio CX45 control, stones, two headrests and a wood platform.
- Choose the door side by the corner it sits in and how you will walk in. Both sides are the same price.
- The 9 kW Harvia Virta needs 240V single phase and draws 37.5A. Have a licensed electrician run the circuit before delivery day.
- It is made to order and cannot be returned once ordered, so confirm size, door side and your site with us first. We confirm the build and ship date after you order.
Not sure this is the right fit? Ask us or call (945) 280-3243.
Compare ThermaSol models
Swipe to compare 4 models
| Model |
ThermaSol Nordic Misty 2-5 Person Outdoor Modular Sauna Cabin
From $31,883.00 |
ThermaSol Spectra 3-4 Person Outdoor Sauna Cabin with Glass Front
$36,092.00 |
ThermaSol Fortis 4-Person Outdoor Sauna Cabin
$36,619.00 |
ThermaSol Vue 3-4 Person Outdoor Mirrored Glass Sauna Cabin
$51,071.00 |
|---|---|---|---|---|
| Capacity | Small: 2 to 3 people. Medium: 4 to 5 people | 3 to 4 people | 3 to 4 people | 3 to 4 people |
| Exterior | Nordic dark thermo-spruce | Thermally modified Tyrol wood panels | brushed thermo spruce and pinewood | – |
| Electrical | – | 240V single phase, 33.4A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 8 kW, per Harvia). Hardwired by a licensed electrician. | 240V single phase, 33.4A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 8 kW, per Harvia). Hardwired by a licensed electrician. | 240V single phase, 37.5A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 9 kW, per Harvia). Hardwired by a licensed electrician. |
ThermaSol Nordic Misty 2-5 Person Outdoor Modular Sauna CabinFrom $31,883.00
- Capacity
- Small: 2 to 3 people. Medium: 4 to 5 people
- Exterior
- Nordic dark thermo-spruce
ThermaSol Spectra 3-4 Person Outdoor Sauna Cabin with Glass Front$36,092.00
- Capacity
- 3 to 4 people
- Exterior
- Thermally modified Tyrol wood panels
- Electrical
- 240V single phase, 33.4A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 8 kW, per Harvia). Hardwired by a licensed electrician.
ThermaSol Fortis 4-Person Outdoor Sauna Cabin$36,619.00
- Capacity
- 3 to 4 people
- Exterior
- brushed thermo spruce and pinewood
- Electrical
- 240V single phase, 33.4A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 8 kW, per Harvia). Hardwired by a licensed electrician.
ThermaSol Vue 3-4 Person Outdoor Mirrored Glass Sauna Cabin$51,071.00
- Capacity
- 3 to 4 people
- Electrical
- 240V single phase, 37.5A heater load, minimum AWG 8 copper supply wire rated 90°C (Harvia Virta 9 kW, per Harvia). Hardwired by a licensed electrician.
Pair it with a cold plunge
Heat, then cold. Many owners alternate sauna sessions with a cold plunge as a contrast therapy routine for recovery and relaxation. Read the contrast therapy guide
Penguin Chillers
Beyond Cold Journey Inflatable Cold Plunge with Chiller by Penguin Chillers
$2,999.00
Chill Therapy
Chill Therapy CHILL1000 Cold Plunge with Built-In Chiller & Heater, 41°F to 104°F
$5,500.00
Penguin Chillers
Beyond Cold Summit All-in-One Stainless Cold Plunge by Penguin Chillers
$6,999.99
Common questions
How is it delivered?
What heater does it use?
How big is it?
Which door side should I choose?
Can I return it?
Choosing the right setup can be tricky. We are here to help.
Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.
Why buy from Restore Suite
Warranty terms up front
Each product page states its warranty coverage, and we help you use it if anything goes wrong.
Terms shown upfront
Shipping, delivery, warranty and return terms for each brand are on the product page before you buy, not buried at checkout.
One point of contact
We handle your questions, delivery issues and warranty claims with the manufacturer for you.
Honest guidance
Free guides and calculators for sizing, running costs and safety, so you can decide with real numbers. See the research
