Commercial Sauna Heaters
Power, not room size, narrows a commercial shortlist first. Your panel rules heaters out before the cubic feet do, so start there and you will save yourself two rounds of picking.
The Harvia Virta Pro 16 is 240V single phase. The Virta Pro 20 and the EOS Mythos S45 both run 208V three phase. The Saunum Air L arrives with a prewired power box and cable whip, though the circuit and the electrician are still yours. The Homecraft Apex spans 10, 12, 15 and 18 kW, which covers most of a light commercial range on one model line.
For a room guests can see, the Mythos S45 is the one. It is 12 or 15 kW behind a 24 piece hand cut Cubius soapstone crown, finished on every side, and only 14.6 inches deep, for rooms of 80 to 142 square feet.
For a room that runs all day, mass is what you want. The full-size HUUM HIVE is built around 528 lb of stones, shipped as sixteen boxes, and covers rooms from 424 to 989 cubic feet. It comes with HUUM’s stainless steel air tunnel, which improves airflow and element life, plus the UKU control and the UKU Extension Box that any HUUM heater at 12 kW or above requires.
Give us the cubic feet, the voltage and phase at the panel, and how many sessions a day the room runs, and we will size it with you on (844) 565-1113.
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Harvia Club Series
Price range: $2,023.00 through $2,286.00The Harvia Club series represents a line of premium electric sauna heaters, offering a range of power ratings to suit various sauna room sizes. These heaters embody the traditional Finnish sauna experience, combining modern craftsmanship with the age-old sauna bathing tradition. Exceptionally engineered for reliability, safety, and efficiency, the Club series heaters are ideal for homes, health clubs, hotels, and spas. With a high stone capacity and the need for separate Xenio control units, these heaters ensure a consistent and pleasurable heat distribution. Given their robustness and versatility, the Harvia Club series stands as an excellent choice for both residential and commercial settings.
Homecraft Apex Commercial-Grade Electric Sauna Heater | 10, 12, 15 and 18 kW
Price range: $2,050.00 through $3,100.00A commercial room that goes cold on a Saturday morning costs more than the heater ever did. Apex is the Homecraft built for rooms that open early and run late: an 18-inch stainless tower carrying 350 lbs of igneous rock, elements set back inside a protected air chamber instead of sitting out in the rock, and four outputs covering rooms from 400 to 1,150 cubic feet. Built in Surrey, British Columbia, CSA and UL certified. We sell the contactor box, the touchpad and the rock alongside it, so nothing lands on your dock half finished.
HUUM HIVE Electric Sauna Heater with Included Air Tunnel | 12, 15 & 18 kW
Price range: $2,848.00 through $3,356.00Full-size HUUM HIVE is built around 528 lb of stones for large residential and commercial-style sauna rooms from 424 to 989 cubic feet. The current 2025+ U.S. heater includes HUUM’s stainless-steel air tunnel to improve airflow, support the elements, and help them last longer. UKU control, UKU Extension Box, and sixteen 33-lb boxes of 2 to 4-inch stones are required and sold separately.
Saunum Air L Stainless – Heat-Equalizing Sauna Heater with Himalayan Salt
Price range: $3,595.00 through $3,995.00The Stainless Steel Saunum Air L solves the most common sauna complaint: extreme temperature variation that forces you to choose between scorching heat or inadequate warmth, delivering instead an even, oxygen-rich environment from floor to ceiling.
Developed through scientific research with Tallinn University of Technology, Saunum’s patented air-blending system delivers the perfect sauna experience, gentle, long-lasting steam with consistent temperature that lets you enjoy longer sessions without discomfort.
Built to exacting standards with premium stainless steel, a massive 198-pound stone capacity, and integrated Himalayan salt therapy, the UL-certified Saunum Air L represents a true investment in your wellness routine and overall sauna enjoyment.
Harvia Virta Pro 16 | 240V Single‑Phase Commercial Sauna Heater
$3,736.00This is our go-to recommendation for both commercial saunas and large home saunas where reliability, safety, and everyday performance are essential. With a sleek black outer shell, easy maintenance access, and extended Harvia warranty this heater will keep your people coming back for more. Have an even larger commercial sauna? Double or triple up on this heater for any space. Like all Harvia Virta or Club models, maintenance and serviceability are unrivaled.
Saunum AIR L – Professional Sauna Heater with Air Equalization and Himalayan Salt Therapy | 10KW 13KW 15KW
Price range: $3,895.00 through $4,195.00Saunum’s best performing sauna heater is here, with a lower rock basket, better clearances, and an overall more commercial grade heater than ever. Buy a Saunum Air L Climate Equalizing sauna heater on Sauna Marketplace and get the latest version with a prewired power box and cable whip making connections easy. You’ll also receive an external temperature sensor to give you more control over where it’s measured.
If you’re not familiar with Saunum heaters, be ready to experience the most versatile, enjoyable sauna experience on the planet. Saunum doesn’t just heat the space, but redistributes air to provide more even temperatures and more oxygen to whoever is lucky enough to be on the bench. The massive stone capacity along with Saunum Air Blending technology provide a soft, long-lasting steam evenly distributed throughout your sauna.
With Saunum, you’ll exit the sauna feeling rejuvenated, not depleted. Whether you were born in the sauna or have never enjoyed them, there’s a Saunum preset that will win you over, we’re sure of it.
Saunum Air is UL-approved for North America and ships daily out of greater Chicago. At Sauna Marketplace, every Saunum heater comes with specially selected rocks paired by Saunum, Wi-Fi enabled AirIQ Controller, Himalayan salt spheres, External Temperature Sensor, US-based support, and the latest integrated power box for simplified installation.
Harvia Virta Pro 20 | 208v 3-Phase Commercial Sauna Heater
$4,943.00If you run a public sauna and “down for maintenance” is not an option, this is the heater we trust. The Virta Pro 20 has the right mix of power, stone mass, and serviceability for busy gyms, hotels, apartments, and studios. It’s the model we see running day in, day out with minimal fuss.
Harvia’s most powerful and appealing electric sauna heater, the Virta Pro 20 is our go-to commercial sauna heater when 208v 3ph power is required. It’s as close to one-size-fits all as we’ve seen in the industry. Ideal for saunas from 354 cubic feet all the way up to 1130 cubic feet.
We have customers running this heater 24 hours/day for years in gyms, spas, hotels, and pro training centers. Maintenance, performance, and longevity are the design principles to be appreciated even more over time. When downtime isn’t acceptable, there’s nothing better than a Virta.
EOS Mythos S45 Design Sauna Heater | 12 / 15 kW
$10,441.00The statement heater for big rooms. The EOS Mythos S45 scales the iF Design Award-winning Mythos design to 12 or 15 kW at 208V three-phase: a 99 lb published stone load, a 24-piece hand-cut Cubius soapstone crown, and a finished-on-every-side body still only 14.6 inches deep. Covers EOS room ranges from 80 to 142 sq ft, private or commercial. Requires one matching 15 kW EOS USA control system (sold separately, select below); no power extension needed. Ships freight via EOS’s official US distribution; lead time confirmed with your order.
We recommend Harvia Autodose for commercial spaces to ensure only pure water and scents are poured over the rocks. This ensure ideal conditions, safer operation, and longer lasting heating elements.
Prebuilt
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