Sauna Heater Categories
About Our Sauna Heaters
At Thermasol, we’re proud to offer two of the world’s most respected sauna heater brands—EOS and Harvia—each crafted with precision, heritage, and performance in mind. These industry-leading heaters bring together European craftsmanship, advanced technology, and design excellence, ensuring every Thermasol sauna—residential or commercial—delivers powerful, consistent heat and a truly authentic wellness experience.
Sleek by Design, Engineered for Wellness
Handcrafted in Germany, EOS sauna heaters embody the pinnacle of engineering, design, and performance. As Thermasol’s premium choice for sauna heaters, each model is built for discerning design professionals and wellness enthusiasts who value precision, control, and enduring craftsmanship. With advanced technology, minimalist aesthetics, and unmatched reliability, EOS stands at the forefront of modern sauna innovation — where form meets function in perfect harmony.
Finnish Tradition
Harvia Sauna Heaters, made in Finland—the birthplace of sauna—embody timeless tradition and trusted performance. Designed for those who value authenticity and enduring quality, Harvia brings warmth, simplicity, and the essence of Finnish wellness to any space.
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All you need to know about Saunas
How long does it take for a sauna to heat up?
How long does it take for a sauna to heat up?
On average, it takes 40–50 minutes to reach 170°F, depending on heater power and outdoor temperature. ThermaSol saunas are designed for consistent, reliable heat. Warm-up time may vary slightly based on size and location.
What’s the difference between a wet and dry sauna?
What’s the difference between a wet and dry sauna?
A dry sauna has low humidity, while a wet sauna allows water to be poured over heated stones to create steam. This enhances the traditional experience and is safe with all ThermaSol heaters. It’s a personal preference based on how you enjoy the heat.
How should I use a sauna safely?
How should I use a sauna safely?
Start with shorter sessions and lower heat, gradually increasing as you find your comfort level. Alternate heat with
cool-down breaks to avoid overheating. Always listen to your body—if it stops feeling comfortable, it’s time to step out.
What’s the difference between a traditional and an infrared sauna?
What’s the difference between a traditional and an infrared sauna?
Traditional saunas heat the room and can produce steam, while infrared saunas use light waves to warm the body directly without heating the air. Infrared doesn’t offer the same ambient warmth or steam. It’s considered heat therapy rather than a true sauna.
How difficult is sauna assembly?
How difficult is sauna assembly?
ThermaSol saunas arrive with pre-assembled panels and easy-to-follow instructions. Two people and basic tools can complete installation in a few hours. It’s a straightforward, DIY-friendly process.
What electrical setup do I need?
What electrical setup do I need?
Heaters must be hardwired by a licensed electrician, typically requiring 220V power. Exact specifications depend on the heater model. Lighting generally runs on a 110V, 15-amp circuit.
How much does it cost to run a sauna?
How much does it cost to run a sauna?
ThermaSol saunas use efficient 240V heaters that draw power only when in use. The cost is comparable to running a clothes dryer or electric oven—typically just cents per session. Turning off the sauna when not in use helps conserve energy.
How do I maintain my sauna?
How do I maintain my sauna?
Wipe down benches regularly, vacuum the interior, and clean glass surfaces. Sit on a towel during use and leave the door open afterward to ventilate. Once a year, remove sauna stones, clean the heater cavity, and replace any cracked stones.
What health benefits can I expect from regular sauna use?
What health benefits can I expect from regular sauna use?
Regular sauna sessions may help relieve muscle tension, improve circulation, reduce stress, and promote better sleep. The heat supports skin cleansing, detoxification, and respiratory relief. It’s a natural way to recharge both mind and body.
What’s the warranty on Thermasol saunas?
What’s the warranty on Thermasol saunas?
ThermaSol saunas come with a Limited Lifetime Warranty covering craftsmanship and structure. Heater components are covered for five years, and heating elements for one year. It’s a long-term investment backed by expert support.
Where should I place an outdoor sauna?
Where should I place an outdoor sauna?
Choose a firm, flat surface with slight runoff for drainage, such as a deck, concrete, paved stones, or pressed gravel.
Sauna Shipping & Delivery Expectations
Sauna Shipping & Delivery Expectations
Shipping costs vary by location. All indoor and outdoor saunas are delivered via flatbed trailer and require a forklift or crane for unloading and placement due to their size and weight. Manual offloading may not be applicable—please refer to individual sauna product pages for specific handling requirements. Customers will receive a delivery notice two weeks in advance to allow time for proper site preparation.
Inspiration and Resources
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