Choose options
Designed for urban living, the Duo Sauna is our most compact outdoor model, perfect for small spaces or couples seeking an intimate retreat. Its modern, minimalist design pairs with easy DIY assembly, making it simple to create a personal wellness oasis right in your backyard.
Built to Last with Thermowood
Crafted from premium hemlock thermowood, this sauna is engineered for durability and longevity. Thermal modification enhances the wood’s stability, insulating properties, and resistance to rot and fungi—ensuring your sauna withstands the elements with minimal maintenance. Free from resin and naturally weather-resistant, thermowood is the ultimate material for a sauna that lasts a lifetime.
True Scandinavian Sauna Experience
Enjoy the authentic warmth of a traditional sauna, reaching your ideal temperature in a timely manner. Whether you prefer dry heat or steam, the Duo Sauna offers a versatile experience that promotes relaxation, improves circulation, and supports muscle recovery.
Easy DIY Assembly
Our saunas are designed for hassle-free assembly—no sawing or cutting required. With pre-cut, interlocking panels, you can build your Duo Sauna in just a few hours, even with basic DIY skills.
Seamless Wi-Fi Control
This wall-mounted, 8kW heater features an intuitive touchscreen control pad that mounts outside your sauna, allowing you to effortlessly control your sauna's temperature and settings. With built-in Wi-Fi, you can adjust your sauna environment remotely using the MyHarvia app on your smartphone, making it easy to create your ideal heat before you even step inside. Crafted in Finland.
The Benefits of Heat Therapy
A daily sauna session can help:
✔️ Boost circulation and cardiovascular health
✔️ Soothe sore muscles and enhance recovery
✔️ Reduce stress and improve sleep
✔️ Detoxify through deep, purifying sweat
What’s Included:
- Duo Sauna (2-Person)
- 8kW Harvia KIP Wi-Fi
- Xenio CX170 Remote Kit
- Harvia Sauna Rocks – Delivering gentle, consistent heat
- Thermowood Wall-Mounted Backrest – Enhancing comfort and support
- Bulkhead Light – Creating a warm, inviting glow
- Traditional Felt Sauna Hat (1) – A must-have for heat retention and scalp protection
- Towel Peg – For easy storage
- Shingles – Providing additional weather protection
- Redwood Outdoors Doormat (available only with sauna purchase)
Shipping and Refund Policy
ORDER CANCELLATIONS
Within 7 Days of Purchase
-
Orders may be cancelled within 7 days
-
Full refund issued
-
No cancellation fee
After 7 Days
-
Orders cancelled after 7 days incur a 3.5% cancellation fee
Bundled Purchases
-
Cancelling or returning part of a bundle voids the bundle discount
-
Refund recalculated at standard (non-bundle) pricing
SHIPPING & DELIVERY TERMS
Address & Responsibility
-
Orders ship to the address provided by the customer
-
Customer is responsible for providing an accurate delivery address
-
If shipment must be re-routed after dispatch:
-
Customer pays all additional carrier fees
-
Shipping Charges
-
Shipping costs may be updated at any time
-
Charges shown at checkout are the charges that apply
Carriers, Risk & Ownership
-
Our fulfillment partner (Redwood Outdoors) selects carrier, method, and number of shipments
-
Products ship via third-party freight networks
-
Ownership and risk transfer to customer upon delivery to the provided address
Delivery Estimates
-
Delivery timelines are estimates only
-
Delays due to weather, freight congestion, or other factors are not the responsibility of our fulfillment partner (Redwood Outdoors)
Receipt of Delivery
-
Tracking issued once freight leaves the warehouse
-
Customer must ensure someone is available to receive delivery
-
Redelivery, storage, or failed-attempt fees are the customer’s responsibility
-
Any person accepting delivery at the address is considered authorized
DELIVERY METHOD
Standard Delivery
-
Default shipping method is curbside delivery
-
Freight is dropped at the curb, driveway entrance, or nearest accessible point determined by the carrier
If Curbside Cannot Be Performed
May offer alternate methods, including:
-
Delivery via smaller truck
-
Shipment to the nearest freight depot for customer pickup
Additional Charges
-
Customer pays all costs above initial quoted shipping
-
Redelivery, storage, and freight transfer may apply
-
Refusal of alternate delivery options counts as a cancellation and is subject to cancellation fees
DELIVERY DAY RESPONSIBILITIES
Inspection
-
Customer must inspect shipment for completeness and condition upon arrival
-
Customer assumes safe handling, storage, and installation after delivery
Missing Items
-
Must be noted on the bill of lading
-
Customer must contact the freight carrier
-
If unresolved: email support@ultimatecavesupply.com
Damaged Items
-
Must be marked damaged on the carrier’s paperwork
-
Customer must notify within 7 days:
-
Redwood may send replacement parts at its discretion
Limitations
-
Not liable for damage or loss outside the procedures outlined above
RETURNS, EXCHANGES & REFUNDS
Eligibility & Time Frame
-
Returns may be requested within 30 days of delivery
-
Returns must be coordinated with support
-
Returns requested after 30 days are not eligible
Requirements
-
Products must be returned in original wooden shipping crates
-
May request photos or inspection before approval
-
Unauthorized returns will be rejected
Credits & Refunds
-
Upon inspection and acceptance, may provide:
-
Full refund
-
Partial refund
-
Store credit
-
-
Refunds exclude:
-
Shipping and handling
-
Other applicable fees
-
Failure to Comply
-
Products returned without following requirements
→ No refund or credit will be issued