Carbon Smart Saunas - 7' x 8' x 8' - by Finnish Sauna Builders
Carbon Smart Saunas - 7' x 8' x 8' - by Finnish Sauna Builders
- Carbon Smart Saunas - 7' x 8' x 8'
- Complete Sauna Kit - Ready for Your Space
- Premium Thermo Poplar Wood
- Customizable Bench Configurations
- What's Included in Your Carbon Smart™ Sauna Kit:
- Important Installation Notes:
- Perfect for Home or Commercial Use
- Expert Support Available
- Sauna Heater Comparison Chart
- Key Differences
Transform your home into a wellness retreat with the Carbon Smart™ Indoor Sauna Room Kit. This complete sauna package includes everything you need to build an authentic sauna experience, whether you're a DIY enthusiast or a professional contractor.
Our Carbon Smart™ indoor sauna kit arrives with all interior components precisely cut and tailored to your room dimensions. Simply provide the framing, insulation, electrical wiring, and exterior wall covering—we supply the rest. Building your dream sauna has never been easier or more affordable.
Carbon Smart™ saunas are crafted exclusively with Thermo Poplar, a sustainably sourced and thermally modified wood that delivers exceptional performance and a beautiful aesthetic for your sauna interior.
Thermo Poplar
A thermally modified wood treated at approximately 374°F for optimal indoor sauna use. This medium modification delivers enhanced dimensional stability, improved resistance to humidity and temperature fluctuations, and a warm, rich tone—all achieved through a chemical-free process. Ideal for creating a naturally beautiful, long-lasting sauna environment. As part of the Carbon Smart™ line, this wood is responsibly sourced to support carbon-smart forestry practices.
Choose the bench layout that best fits your space and needs from our selection of configurations shown in the product images. Each configuration is designed to maximize comfort and optimize your sauna experience.
- Foil vapor barrier for proper moisture protection
- Ergonomic backrests for comfortable relaxation
- 1×4 tongue & groove boards (walls & ceiling) in Thermo Poplar
- Clear 1×4 bench boards with supports (20″ deep) in Thermo Poplar—custom-built to your chosen configuration
- Corner moldings for walls, ceiling, and baseboards (Thermo Poplar)
-
All-glass sauna door with wood handles and trim
- Frame: 27.2″ × 78.7″ (690 × 2000 mm)
- Glass: 24.4″ × 77.3″ (620 × 1963 mm)
- Frame thickness: 1.65″ × 3.6″ (42 × 92 mm)
- Rough opening required: 28″ × 80″
- Duckboard flooring for walk area (Thermo Poplar)
- Upper and lower vent grills for proper air circulation
- Traditional sauna bucket with liner and ladle
- Sauna thermometer for temperature monitoring
- Comfortable headrest
- Marine-grade, wall-mount, vapor-proof sauna light
- Detailed installation instructions for easy assembly
- Recommended ceiling height is 8 feet per manufacturer safety and clearance guidelines. For custom ceiling heights, please contact our support team.
Whether you're building a personal wellness sanctuary or outfitting a spa or gym, our Carbon Smart™ DIY sauna kits deliver professional-quality materials at competitive prices.
Contact your Carbon Smart™ Specialist today for personalized guidance in creating the perfect sauna room for you and your family.
Note: Your sauna shipment will include an all-glass door, though some photos may display a glass wall for reference. Backrests are shipped flat; if you'd like an angled backrest, additional spacers can be easily created on-site to achieve your desired pitch.
Note: Wall boards run in the standard horizontal direction unless room width exceeds 8 ft; in such cases, an interior seam will be added where two boards meet to span the width.
| Feature | Harvia Cilindro PC90 9KW | Harvia Cilindro PC90E 9KW | Harvia Virta 9KW | EOS Cubo Avantgarde 9KW | EOS Mythos S35 9KW |
|---|---|---|---|---|---|
| Product Image |  |
 |
 |
 |
 |
| Power Output | 9 KW | 9 KW | 9 KW | 9 KW | 9 KW |
| Brand | Harvia | Harvia | Harvia | EOS | EOS |
| Control Type | Built-in Control | WiFi Control | WiFi Control | WiFi Control | WiFi Control |
| WiFi Connectivity | ❌ No | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Heater Stones Included | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Railing Included | ❌ No | ❌ No | ✅ Yes | ❌ No | ❌ No |
| Model Series | Cilindro Series | Cilindro Series | Virta Series | Cubo Avantgarde Series | Mythos Series |
| Model | PC90 | PC90E | Virta | Cubo Avantgarde | Mythos S35 |
| Remote Control | Manual only | App-based via WiFi | App-based via WiFi | App-based via WiFi | App-based via WiFi |
Harvia Cilindro PC90 9KW Built-in Control
Power Output
9 KW
Brand
Harvia
Control Type
Built-in Control
WiFi Connectivity
❌ No
Heater Stones Included
✅ Yes
Railing Included
❌ No
Model Series
Cilindro Series
Model
PC90
Remote Control
Manual only
Harvia Cilindro PC90E 9KW WiFi
Power Output
9 KW
Brand
Harvia
Control Type
WiFi Control
WiFi Connectivity
✅ Yes
Heater Stones Included
✅ Yes
Railing Included
❌ No
Model Series
Cilindro Series
Model
PC90E
Remote Control
App-based via WiFi
Harvia Virta 9KW WiFi with Railing
Power Output
9 KW
Brand
Harvia
Control Type
WiFi Control
WiFi Connectivity
✅ Yes
Heater Stones Included
✅ Yes
Railing Included
✅ Yes
Model Series
Virta Series
Model
Virta
Remote Control
App-based via WiFi
EOS Cubo Avantgarde 9KW WiFi
Power Output
9 KW
Brand
EOS
Control Type
WiFi Control
WiFi Connectivity
✅ Yes
Heater Stones Included
✅ Yes
Railing Included
❌ No
Model Series
Cubo Avantgarde Series
Model
Cubo Avantgarde
Remote Control
App-based via WiFi
EOS Mythos S35 9KW WiFi
Power Output
9 KW
Brand
EOS
Control Type
WiFi Control
WiFi Connectivity
✅ Yes
Heater Stones Included
✅ Yes
Railing Included
❌ No
Model Series
Mythos Series
Model
Mythos S35
Remote Control
App-based via WiFi
Power & Heating Capacity:
- All models: 9 KW power output for powerful heating performance in larger sauna rooms
Brands:
- Harvia (Finnish): Cilindro PC90, Cilindro PC90E, Virta — trusted Finnish heritage brand with decades of sauna expertise
- EOS (German): Cubo Avantgarde, Mythos S35 — premium German engineering with innovative design aesthetics
Control & Connectivity:
- Cilindro PC90: Basic built-in control panel only — no remote or app features
- Cilindro PC90E, Virta, EOS Cubo Avantgarde & EOS Mythos S35: WiFi-enabled for smartphone control and scheduling
Design & Model Series:
- Cilindro Series: Iconic cylindrical design with large stone capacity, available in standard (PC90) and WiFi-enabled (PC90E) versions
- Virta Series: Premium Harvia model with WiFi control and included protective safety railing
- EOS Cubo Avantgarde: Bold cubic form with WiFi control and a striking modern aesthetic
- EOS Mythos S35: Sleek, minimalist German design with WiFi connectivity and high stone capacity
Included Accessories:
- All models come with heater stones included
- Harvia Virta is the only model in this lineup that includes a protective safety railing