Carbon Smart Sauna, 3 x 4 x 8 ft, by Finnish Sauna Builders

Carbon Smart Sauna Kit, 3 x 4 x 8 ft, finished indoor sauna room

Finnish Sauna Builders Carbon Smart Indoor Sauna 3 x 4 x 8

$5,190.50

Wood type:

Thermo Poplar

Accessory Packages:

No Accessories Bench Skirting LED Under Bench Lighting Luxury Package: Skirting + LED Under Bench Lighting

Heater:

No Heater Harvia KIP45W 4.5KW WiFi with Heater Stones HUUM Cliff Mini 3.5KW WiFi with Heater Stones and Railing

Variant

Delivery priced in full at checkout, no surprises
Secure, encrypted checkout

Questions before you order? Call 1-813-701-5976, weekdays 9 to 5 Eastern, or chat with us.

What happens after you order

What comes with it, how it reaches you, and our return terms. Tap a section for the details.

Delivery

Delivery is priced for this item and shown in full at checkout. The figure you see there is the figure you pay.

This sauna arrives by freight truck. Standard freight is $950 to the lower 48 states. The exact figure is shown at checkout before you pay.

When it arrives

A freight carrier calls you to agree a delivery window. You will not be left guessing.
The crate comes off the truck on a lift gate and is set at the curb. Plan for two people to take it from there.
Walk around the crate before you sign. Write any visible damage on the delivery paperwork.
Report hidden damage within 48 hours of delivery, or sooner if this page states a shorter window. That note is what protects your claim.

Returns and cancellation

30 days from delivery, unused and in its original packaging. Ask us first so the return is authorized.
Return transport is arranged and paid by you, by insured freight carrier.
Returns follow the maker's terms. Ask us before you order.
Cancellation follows the maker's terms. Ask us before you order.
Damaged or wrong on arrival: we open the claim with the maker and the carrier for you, and confirm every step in writing.

Full return policy · Delivery policy

Questions?

Email support@elysiumsluxe.com for the fullest answer. We reply by email within 1 to 2 business days.

Or call 1-813-701-5976, Monday to Friday, 9 to 5 Eastern.

Finnish Sauna Builders Carbon Smart Indoor Sauna 3 x 4 x 8

$5,190.50

The details

Carbon Smart Saunas - 3' x 4' x 8'

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.

Complete Sauna Kit - Ready for Your Space

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, and we supply the rest. Building your dream sauna has never been easier or more affordable.

Premium Thermo Poplar Wood

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.

Customizable Bench Configurations

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.

What's Included in Your Carbon Smart™ Sauna Kit:

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

Important Installation Notes:

Recommended ceiling height is 8 feet per manufacturer safety and clearance guidelines. For custom ceiling heights, please contact our support team.

Perfect for Home or Commercial Use

Whether you're building a personal wellness retreat or outfitting a spa or gym, our Carbon Smart™ DIY sauna kits deliver professional-quality materials at competitive prices.

Expert Support Available

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 arrive 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.

Sauna Heater Comparison Chart

Feature	Harvia KIP45B 4.5KW	Harvia KIP45W 4.5KW	HUUM Cliff Mini 3.5KW
Product Image
Power Output	4.5 KW	4.5 KW	3.5 KW
Cubic Feet Coverage	176 - 353 cu ft	176 - 353 cu ft	106 - 247 cu ft
Control Type	Built-in Control	WiFi Control	WiFi Control
WiFi Connectivity	❌ No	✅ Yes	✅ Yes
Heater Stones Included	✅ Yes	✅ Yes	✅ Yes
Railing Included	❌ No	❌ No	✅ Yes
Brand	Harvia	Harvia	HUUM
Model	KIP45B	KIP45W	Cliff Mini
Remote Control	Manual only	App-based via WiFi	App-based via WiFi

Harvia KIP45B 4.5KW

Power Output

4.5 KW

Cubic Feet Coverage

176 - 353 cu ft

Control Type

Built-in Control

WiFi Connectivity

❌ No

Heater Stones Included

✅ Yes

Railing Included

❌ No

Brand

Harvia

Model

KIP45B

Remote Control

Manual only

Harvia KIP45W 4.5KW

Power Output

4.5 KW

Cubic Feet Coverage

176 - 353 cu ft

Control Type

WiFi Control

WiFi Connectivity

✅ Yes

Heater Stones Included

✅ Yes

Railing Included

❌ No

Brand

Harvia

Model

KIP45W

Remote Control

App-based via WiFi

HUUM Cliff Mini 3.5KW

Power Output

3.5 KW

Cubic Feet Coverage

106 - 247 cu ft

Control Type

WiFi Control

WiFi Connectivity

✅ Yes

Heater Stones Included

✅ Yes

Railing Included

✅ Yes

Brand

HUUM

Model

Cliff Mini

Remote Control

App-based via WiFi

Key Differences

Power & Heating Capacity:

Harvia models: 4.5 KW (suitable for 176-353 cubic feet)
HUUM Cliff Mini: 3.5 KW (suitable for 106-247 cubic feet)

Control & Connectivity:

KIP45B: Basic built-in control panel (no remote features)
KIP45W & Cliff Mini: WiFi-enabled for smartphone control and scheduling

Design & Accessories:

HUUM Cliff Mini is the only model that includes a protective railing
All models come with heater stones included

The protocol Heat, then cold. The routine the best recovery clubs run on: about ten minutes of heat, then thirty seconds to a minute of cold. Two or three rounds and you walk out lighter, clearer and completely reset. Pair this sauna with a cold plunge and plan both for the same space. Explore contrast therapy

Elysiums Luxe is an independent retailer of general wellness equipment. Products are not medical devices unless stated and are not intended to diagnose, treat, cure or prevent any condition. Product details are supplied by each maker, and every product is to be used as its maker intends.