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Swell Black Eco 4

Traditional Sauna For Four

4.9
Rated 4.9 out of 5 stars
26 Reviews
  • Regular price $10,990.00

✓ Full traditional heat reaching up to 100°C for an authentic sauna
✓ Built from aromatic Canadian Western Red Cedar inside and out
✓ No VOC for a cleaner and safer sauna environment
✓ Soft ambient lighting with warm chromotherapy
✓ Harvia The Wall 6kW heater for fast heat and consistent performance
✓ Premium audio system with Bluetooth connectivity for an immersive session

6kW Harvia Wall Heater SW60E

6kW Harvia Wall Heater SW60E

Sauna Wifi Panel

Sauna Wifi Panel

$299.00
(2) Bluetooth Speakers

(2) Bluetooth Speakers

$79.00
Harvia Black Sauna Speaker

Harvia Black Sauna Speaker

$158.00
Swell Signature Merino Wool Sauna Hat

Swell Signature Merino Wool Sauna Hat

$98.00

Have a question? We’ve got you.Contact Us

Australian Stocked

warranty5-Year Warranty

in-transit--v1Ships From Australia

in-transit--v130 Day Risk-Free Trial

design--v1Insured Delivery Australia-Wide

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Australian Dispatch Schedule

Confirmed stock windows for Australia wide delivery

June-7-14
Sold Out
July 5–10
Sold Out
July 25–30
% Sold
August 28–30

Swell Eco 4 is built from premium Canadian Western Red Cedar, the best timber a sauna can be made from, and finished with a sleek black exterior that gives it a clean, modern look suited to Australian homes. The square layout provides comfortable seating for 3–4 people, making it a great option for families or shared sessions. The high bench design lets you sit tall and absorb the heat, and the 6kW Harvia heater brings the sauna up to 100°C for a consistent traditional sauna experience. A reliable, family friendly addition for daily recovery and simple home wellness.

• Harvia The Wall 6kW heater

• Volcanic sauna stones

• Premium black metal bucket

• Matching black metal ladle

• Thermometer

• Hygrometer

• Sand timer

• Upper bench

• Lower bench

• LED strip lighting behind the backrest

• Tempered full glass front

• Bitumen roof shingles

• Prefabricated cedar wall panels designed to connect seamlessly

• All hardware and fixings for assembly

• Detailed installation manual

ECO4 Sauna drawings

View the full dimensions and layout guide here: Click here to view the drawings

Product manual

View the assembly and installation guide here: Click here to view the product manual

Construction

• Handcrafted from Western Red Canadian Cedar

• Australia stocked

• Suitable for indoor and outdoor installation

• 100% Canadian Western Red Cedar

• Tempered full glass front

• LED strip lighting positioned behind the backrest

Dimensions

• Body size: 163cm wide x 159cm deep

• Total size with roof: 238cm wide x 230cm deep

• Height: 220cm at front / 210cm at rear

Interior Layout

• Internal size: 154cm wide x 150cm deep x 191.6cm high

• Bench depth: 40cm upper bench / 40cm lower bench

• Headroom above top bench: 104.8cm

• Seats 3-4 people

Heating and Control

• Harvia The Wall 6kW heater

• Heats to 70°C in around 20 minutes and reaches 90–100°C+ with extended use depending on conditions

• Includes thermometer, hygrometer, sand timer, volcanic sauna stones, and black metal bucket and ladle

Electrical Requirements

• Power supply 240V single phase

• Dedicated circuit required

• Heater draws 25A under load

Roof

• Bitumen roof shingles for long term outdoor durability

Arrival of Your Sauna

Your sauna will arrive in protective cartons, usually around 5 to 8 cartons per sauna. This makes it easier to move each section into position before assembly.

Installation

Swell saunas are made for DIY setup, with pre cut components and clear, step by step instructions. Most customers can move the cartons into position and complete the assembly with two people over a few hours. A licensed electrician is still required to connect the heater. If you would prefer a hands off setup, we have a team available Australia-wide to handle the assembly for an extra cost. Please reach out and we can help arrange it.

Maintenance

Cedar naturally resists moisture and outdoor conditions, developing a silver grey colour over time while maintaining its strength. To keep the timber looking rich, the exterior can be oiled annually with a breathable wood oil such as Linseed or Feast Watson. Light sanding can be used to refresh the surface

General care is simple. Wipe surfaces as needed, keep the interior free from debris, and check the stones occasionally to ensure everything performing well

Certified Safe

Meets strict Australian Standards for safety, durability, and performance

Cost to Run

A 6kW heater keeps running costs low with a 30 minute session costing around $0.90

Warranty

Designed for all weather indoor and outdoor conditions and backed by a 5 year warranty

Guarantee

• 30 day home trial for all Swell products

• If it is not the right fit, simply repackage the product and return it, with return freight covered by the customer

• 5 year warranty

• Protection against any manufacturing faults

• Repairs or replacements provided when required

• Freight included on approved warranty claims

• Continued support from the Swell team whenever needed

Delivery

• Products in stock are dispatched promptly from our Australian warehouse

• High demand means many items sell out which can result in a short lead time

• The expected completion date for the current drop is shown above

• All shipments are tracked and insured for reassurance

• Shipping is calculated at checkout to provide the best available rate

• Optional installation available through our trusted partners across Australia

• Contact us and we will connect you with the appropriate installation team

• Delivery schedules may shift during peak periods and are updated regularly

• If you require your order sooner, reach out and we will explore available options

ECO 4 FAQ

Frequently Asked Questions

Answers to the most common questions about power, installation, delivery and daily use for the Swell Black Eco 4 outdoor traditional sauna.

The Swell Black Eco 4 uses a premium Harvia The Wall 6kW traditional sauna heater and requires a dedicated 25A single-phase circuit installed by a licensed electrician. We intentionally oversize the heater for reliability, strong performance and fast heat-up times, while keeping the sauna below the larger three-phase requirements that are not universal for Australian homes.

No. The ECO 4 does not require three-phase power. It is designed so it can be installed in standard Australian homes with the correct dedicated single-phase circuit added by a licensed electrician.

The ECO 4 is a traditional Finnish-style sauna, not an infrared sauna. It uses a Harvia heater and sauna stones to create full-room heat and steam when water is poured over the stones.

The sauna simply needs a level, compacted surface. Concrete, pavers, decking or a prepared compacted area can all work well. We recommend avoiding direct placement on grass because grass can hold moisture under the base.

The ECO 4 body measures 163cm wide x 159cm deep, with a sloped roof height of 220cm at the front and 210cm at the rear. The roof is larger than the body, measuring 238cm wide x 230cm deep, with approximately 30cm of overhang from the sauna body.

Swell saunas are dispatched from our Melbourne warehouse in protective cartons. Once your order is on the way, you will receive tracking details so you can follow the delivery and plan around its arrival.

The ECO 4 is made for DIY setup, with pre cut components and clear, step by step instructions. Most customers can move the cartons into position and complete the assembly with two people over a few hours. If you would prefer a hands off setup, we have a team available Australia-wide to handle the assembly for an extra cost. Please reach out and we can help arrange it. A licensed electrician is still required to connect the heater.

The ECO 4 heats to 70°C in around 20 minutes and reaches 90–100°C+ with extended use depending on conditions. It uses a premium Harvia The Wall 6kW heater to deliver strong traditional heat for a 3–4 person outdoor sauna.

The Swell Black Eco 4 is designed for 3–4 people, making it suitable for couples, families and shared recovery sessions at home.

The Swell Black Eco 4 includes a 5-year warranty for long-term confidence. It is built with premium materials and designed for Australian outdoor conditions.

Because Swell saunas are in high demand, a 50% deposit lets you secure your place in the next available stock allocation without paying the full amount upfront. The remaining balance is completed before delivery.

RECOVERY AT HOME JUST GOT EASIER

PRESENTING OUR PREMIUM SAUNA.

SWELL ECO4

You have been looking for a while now. heres australia's #1 premium sauna. ask around.

THE BENCHMARK FOR HOME SAUNAS IN AUSTRALIA

SUBTLE. PREMIUM. BUILT TO LAST

Welcome to Premium Sauna Living

The interior of the Eco 4 is finished with premium Canadian Western Red Cedar cladding, responsibly sourced and rich in natural character. The timber releases a warm, natural aroma and refined finish that makes the sauna feel as good as it looks.

Cedar sauna benches with sauna bucket and Harvia heater inside Swell Black Eco 4
Swell Eco 4 4-person outdoor sauna - timber deck setting - Harvia sauna
ITS HOT. AS HOT AS 100°C.

Feel the Power of Harvia

Swell saunas use premium Harvia Wall heaters, a 6kW heater in the Eco 4 model. Heat is never a limitation, with consistent, even performance reaching up to 100°C to deliver a true traditional sauna experience session after session.

An Interior Worth Slowing Down For

TIMBER STRAIGHT FROM CANADA

Built From Cedar, Designed For Stillness

The Eco 4 is crafted with clear-grade cedarwood cladding, selected for its natural durability, stability, and timeless appearance. Inside, the sauna remains completely chemical free, allowing the timber to breathe and release its natural aroma as the space warms. Built for outdoor use, the Eco 4 is designed to handle year round conditions while maintaining its refined finish. Every element is considered, with Swell’s signature details throughout to deliver a calm, considered recovery experience.

Swell Black Eco 4 outdoor sauna beside swimming pool on landscaped backyard patio
Swell Black Eco 4 sauna control panel and ventilation detail on cedar interior wall
PREMIUM ENGINEERING. FULL CONTROL.

Designed With The Best Technology

Integrated Bluetooth speakers, dimmable LED backlit rests and intuitive controls work together to create a calm, comfortable environment at any time of day. Whether you prefer bright, open daytime sessions or a softer evening glow, the lighting adjusts to suit your mood. Optional WiFi control is available for effortless session management when you want it.

CHOSEN BY THOSE AT THE TOP
“Recovery is part of performance” “Recovery underpins longevity” “At the top, recovery is non negotiable” “Performance is built on recovery” “Recovery is treated as essential” “Recovery supports sustained performance”
Sports recovery logo featured in Swell Sport ice bath section
Sports recovery logo featured in Swell Sport ice bath section
Sports recovery logo featured in Swell Sport ice bath section
Sports recovery logo featured in Swell Sport ice bath section
Sports recovery logo featured in Swell Sport ice bath section
Sports recovery logo featured in Swell Sport ice bath section

Speak With A Swell Specialist

A brief consultation to help you choose the right ice bath and sauna setup.

4.9
Rated 4.9 out of 5 stars
Based on 26 reviews
Total 5 star reviews: 25 Total 4 star reviews: 0 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
96%would recommend this product
Slide 1 selected
26 reviews
  • SC Profile picture for Scott C.
    Scott C.
    I recommend this product
    Rated 5 out of 5 stars
    Looked for months

    Too many options.

    This was the best looking sauna we found.

    Very happy with it.

    Shipping was delayed a bit but communication was good the whole time.

    Thanks to Dan and the team.

  • P&
    Peter &. M.
    I recommend this product
    Rated 5 out of 5 stars
    Should've done this sooner

    Months n months n months of looking....

    Finally received, shipping was delayed but Dan was very good at communicating.

    Cannot fault these guys or the product. Is amazing. Eco4 was what we always wanted from the start. Saw a friend's Kiva in person and just doesn't even compare.

    Thank you Dan, Odin, Jess and Alex for all your help.

  • MH
    Marcus H.
    I recommend this product
    Rated 5 out of 5 stars
    Absolutely love our Eco 4

    We bought the Swell Black Eco 4 and honestly it's been one of the best purchases we've made as a family. We use it together regularly and it's become something we all look forward to. For what you get, the size, the quality, the price is really reasonable. Couldn't recommend it more.

  • J
    Jayson
    I recommend this product
    Rated 5 out of 5 stars
    Super Happy!

    Couldn't recommend this sauna anymore

  • NO
    Neil O.
    I recommend this product
    Rated 5 out of 5 stars
    Awesome product guys - Neil

    Family is loving it