Harvia Duo Series 36 Wood Stove Sauna Heater
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Product Information
The Harvia Duo Series 36 is a powerful 2-in-1 wood-burning sauna heater and fireplace that efficiently
heats two rooms.
With a 31kW output and 132-lb stone capacity, it provides intense steam for saunas up to 1,271 cu. ft.,
while its steel-framed glass door allows for cozy ambiance in the adjoining space. Built tough with
stainless steel.
Product Features
The Harvia 36 Duo heater blends elegance and function with its stainless steel build and dual-room
heating design.
Ideal for large saunas, it delivers strong, consistent heat and a relaxing fireplace glow in the
adjacent room.
31kW dual-room heater
Stainless steel casing
Steel-framed glass door
For 494–1271 cu. ft. saunas
132 lbs stone capacity
Harvia Duo Series 36 Wood Stove Sauna Heater
Two-Room Heating Power:
The Duo system warms both your sauna and an adjacent room, maximizing comfort and space efficiency.
Stainless Steel Finish:
Stylish, durable exterior withstands high heat and adds a sleek, modern look to any sauna setup.
132 lb Stone Capacity:
Holds three boxes of sauna stones, providing thick, long-lasting steam sessions.
Elegant Glass Door:
The large steel-framed glass door enhances visibility and ambiance while offering heat control.
Strong 31kW Output:
Delivers powerful, even heat across large sauna rooms and fireplace spaces alike.
Made in Finland:
Crafted with Finnish precision and sauna tradition for professional-grade performance.
Additional Features
This dual-purpose heater provides sauna comfort and fireplace warmth with clean design, strong heat, and premium stainless steel durability.
Heats Two Rooms
Sauna on one side, fireplace ambiance on the other—perfect for relaxation in both spaces.
Stainless Steel Casing
Rugged exterior resists corrosion and wear while adding modern flair to the sauna room.
Large Glass Door
Offers a cozy view of the fire and contributes to radiant warmth in the fireplace room.
Adjustable Feet
Ensures stable, level installation even on uneven sauna flooring.
About Harvia
Harvia is a globally recognized Finnish brand known for its premium sauna heaters, control systems, and wellness solutions.
Founded in 1950, Harvia blends traditional sauna culture with modern technology, offering reliable, high-performance products.
Renowned for durability, efficiency, and elegant design, Harvia continues to lead the industry in crafting exceptional sauna experiences for homes and commercial spaces worldwide.
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Choose Peak Primal Wellness for a personalized, community-driven approach to health. We prioritize your well-being with high-quality products, tailored solutions, and 24/7 support.
As a family-owned business, we build lasting relationships, offering authentic, effective solutions to help you achieve your wellness goals.
Join our thriving community and embark on a journey toward optimal health with passionate professionals who genuinely care. At Peak Primal Wellness, you're not just a customer—you're family.
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Specifications
| Brand | Harvia |
| SKU | WK360SLUX |
| Model | 36 Duo |
| Power Output | 31 kW |
| Primary Fuel | Wood |
| Material | Stainless Steel |
| Stone Capacity | 132 lbs (3 boxes) |
| Firewood Length | 15.3" (390mm) |
| Firewood Diameter | 3–6" (80–150mm) |
| Room Size | 494–1271 cu. ft. |
| Minimum Room Height | 81.1" (2060mm) |
| Flue Connection | Top |
| Heater Weight | 176 lbs |
| Shipping Weight (with stones) | 308 lbs |
| Dimensions | 20" W x 31" D x 32" H |
Warranty & Returns
Return Policy
To request a return or refund, customers can use our contact form, email (info@peakprimalwellness.com) , or phone - (877) 689-4898. Once the product is inspected and confirmed to be in brand new condition, we will initiate the refund, which typically takes 5-7 business days to post back to the original payment method. Refunds can be applied via the customer’s preferred method, including card or bank transfer. Shipping instructions and the return address will be provided upon contacting customer service. Please include photos if the product arrives damaged. Click here to view our complete return policy for more details.
Shipping Policy
Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. Click here to view our complete Shipping policy for more details.
Frequently Asked Questions
What is the sauna room size range for this heater?
The Harvia 36 Duo is ideal for sauna rooms between 494 and 1271 cubic feet in volume.
Does it include sauna stones?
No, sauna stones are not included. You’ll need three 44lb boxes (132 lbs total) of 10–15 cm sauna stones.
What makes the Duo model unique?
The Duo series heats both a sauna and an adjoining fireplace room, giving you relaxation and ambiance in two spaces.
Can the heater be installed in an outdoor sauna?
Yes, it can be used in outdoor saunas, as long as it’s properly insulated and ventilated with a secure flue system.
What type of firewood should I use?
Use dry, seasoned hardwood logs up to 15.3 inches in length and 3–6 inches in diameter for optimal burning.
Is the glass door heat-resistant?
Yes, the steel-framed glass door is made of heat-resistant materials designed for high-heat environments like saunas and fireplaces.
Is the Harvia 36 Duo CE-certified?
Yes, all Harvia heaters including the 36 Duo meet CE safety and performance standards for sauna heating appliances.
