Haven 4
Haven 4
4-person Traditional Sauna
The toughest outdoor sauna ever created. Premium materials, precision engineering, and timeless Scandinavian design combine to deliver authentic Finnish heat in 30 minutes—every single time.
Real Human Support, Always
Our Sauna Experts are here for you.
Free Delivery
On all orders
365-Day Returns
Try it risk-free
5-Year Warranty
Complete coverage
Product Overview
Specifications
Installation Requirements
Warranty
Every Prime Sauna is protected by our industry-leading 5-Year Comprehensive Warranty. This is a reflection of our unwavering commitment to produce saunas that last a lifetime.
It's about the components, their arrangement, and the quality, but more so, it's about the people who put it all together. The quality and craftsmanship they exude, for what we've seen, simply cannot be replicated by an overseas producer, domestially outsourced, or done by a machine.
365-Day Risk-Free Trial We believe the only way to truly understand the difference is to experience it. That’s why we offer a 365-Day Home Trial. Live with it, sweat in it, and make it part of your routine for a full year. You’ll absolutely love it, or we’ll take it back—zero risk, no questions asked.
Maintenance & Care
Our saunas are engineered to last 20+ years. With minimal maintenance, your investment will remain beautiful and functional for decades.
Exterior Care:
- Protect: Apply exterior wood oil every 6–12 months to shield against UV rays and moisture.
- Restore: Light sanding will smooth any weathering or roughness that naturally occurs over time.
Interior Care:
- Clean: Wipe benches and floors regularly with warm water and mild, non-toxic soap.
- Refresh: Light sanding removes marks, stains, or wear to reveal fresh timber beneath.
Have maintenance questions? Our team is here to help with detailed guidance.
Delivery & Lead Time
Quality Guarantee: Every Prime Sauna is handcrafted and pre-assembled in our factory for rigorous quality inspection before packaging. This ensures 100% component accuracy and a perfect fit upon arrival.
Lead Time:
- 3–10 weeks depending on model selection
Shipping:
- United States: 5-10 business days
- Australia: 5-10 business days
- Canada: 5-10 business days
- Delivery Cost: 100% FREE curbside delivery
Delivery Coordination: We'll contact you prior to delivery to arrange a convenient time. For properties with difficult access, we recommend being present to assist the driver with navigation.
Flat-Pack Design: Your sauna arrives disassembled in manageable flat-pack sections, allowing piece-by-piece transport to your desired location—ideal for navigating tight spaces or challenging access points.
Seamless Setup
Smart design meets simple construction. We provide a streamlined assembly process designed to get you up and running without the headache.
Private Sanctuary
Your personal retreat for holistic health. Unwind in deep, therapeutic heat whenever you need it most.
Exclusive Design
Distinctive. Modern. Yours. We offer a proprietary aesthetic designed to be the architectural centerpiece of your home.
World-Class Performance
Compromise nothing. Featuring the industry-leading Harvia heater from Finland, ensuring consistent, powerful, and authentic heat.
Deep heat. Deep breath. Deep rest.
The daily ritual your body deserves.
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Lighting That Adapts to Every Moment
Adjustable dimmable lighting allows you to effortlessly set the mood, creating a calming ambiance ideal for relaxation and rejuvenation.
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Crafted With Tradition & Precision
Each piece is made from finely selected premium timber, expertly handcrafted by seasoned artisans with decades of mastery.
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Optimal Heat Zone
Expertly engineered using premium timber, crafted by seasoned artisans to deliver consistent heat and exceptional comfort.
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Smart Remote Control
Power and preheat your sauna through the Harvia Wi-Fi app, ensuring the perfect heat is ready the moment you arrive.
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Powerful Finnish Heat
Authentic Harvia heaters deliver the true Finnish sauna experience — deep, invigorating, and restorative.
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Advanced Heat Retention & Energy Efficiency
Engineered with 42mm wall construction and a triple-seal barrier to minimize heat escape — delivering longer heat retention and up to 40% lower energy consumption.
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Certified Safe & Effective
ETL and CE certified with weather-resistant electronic systems, our saunas are engineered to meet the highest standards of safety and performance.
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Built to Last
Every detail is reinforced and precision-engineered, making RITUAL one of the toughest and most durable outdoor saunas ever crafted.
Everything Your Sauna Needs
Timer
Thermometer
Ladle
Bucket
Backrest
Proven Health Benefits
Experience faster recovery, better circulation, and a happier mood.
Frequently Asked Questions
The Haven 4 is designed to deliver a true Finnish sauna experience. It can reach temperatures up to 230°F (110°C) in just 30 minutes, thanks to the powerful Harvia heater and premium insulation.
This is a traditional steam sauna. It uses an electric stove with hot stones. You can control the humidity and intensity of the heat (the "löyly") by tossing water onto the rocks, which creates steam—something you cannot do in an infrared sauna.
Absolutely. The Haven 2 is engineered specifically for outdoor use in all climates. With 42mm thick solid timber walls and a triple-seal system, it retains heat efficiently even in freezing temperatures.
You can expect the sauna to be ready in about 30 minutes. The exact time may vary slightly depending on the outside temperature, but the insulation is designed to minimize wait times.
Because of the high-grade insulation (which reduces energy loss by up to 40%), the Haven 2 is very energy efficient. For a typical session, the electricity cost is usually comparable to running a clothes dryer or large appliance for the same amount of time.
Yes. The 6kW Harvia heater requires a dedicated 220-240V, 20-amp circuit. You cannot plug this into a standard household outlet. We strongly recommend hiring a licensed electrician to handle the final hookup.
Yes, it is designed for DIY assembly. The sauna arrives in flat-pack modules that lock together. Two people can typically assemble the entire unit in 2 to 4 hours with basic tools.
You need a flat, level surface capable of supporting at least 1,100 lbs (500kg). A concrete slab, paved surface, or a sturdy wooden deck are all excellent options. Do not place it directly on grass or dirt.
Yes. While it is built tough enough for the outdoors, the modular design allows you to assemble it indoors (e.g., in a garage or large bathroom) as long as you have the required electrical setup and ventilation clearance.
You need a minimum gap of 2 inches (5cm) at the rear and sides, and 12 inches (30cm) overhead to ensuring proper ventilation and airflow for the heater.
Nordic Spruce is a classic Finnish choice—bright, durable, and offers a subtle forest aroma. It is a great value option. Red Cedar is the premium "gold standard." It is naturally rot-resistant, stays cooler to the touch, and has that signature rich aromatic scent.
To keep the exterior looking fresh and protected from UV rays/moisture, we recommend applying a timber oil every 6–12 months. The interior should simply be wiped down with water and mild soap as needed.
Yes. We use 8mm thick tempered safety glass. It is factory-tinted for privacy and is significantly stronger and safer than standard glass.
No. We upgraded all bands, hinges, and fasteners to 316 marine-grade stainless steel, which offers superior corrosion resistance compared to standard steel, even in coastal areas.
Yes. The sauna comes with a reinforced roof featuring premium asphalt shingles and a double-underlayment to ensure it is completely watertight.
Yes, the price includes the Harvia "The Wall" 6kW heater and 45 lbs (20kg) of sauna stones. You have everything you need to start sweating immediately after electrical installation.
The Haven 2 comes fully loaded. You receive a bucket, ladle, sandglass timer, thermometer, and backrests at no extra cost.
Yes, if you select the Wi-Fi Controlled heater option. This allows you to turn on the sauna remotely so it is hot and ready the moment you get home.
We offer a 365-Day Risk-Free Trial. You can use the sauna for a full year. If you aren't completely in love with it, we will take it back—no questions asked.
Every Haven sauna is backed by an industry-leading 5-Year Comprehensive Warranty from PrimeSauna. This covers the timber, components, and craftsmanship, reflecting our confidence that this sauna is built to last a lifetime.