If you're building a large home sauna, the heater you choose is everything. It determines how quickly your space heats up, how evenly the warmth circulates, how much steam you can generate—and ultimately, how satisfying your sauna experience will be.
To help you make the best choice, we've rounded up our top 5 recommended heaters for large home saunas. These models are engineered for performance, reliability, and comfort in rooms up to 1,200+ cubic feet.
Need help sizing? Use our Sauna Heater Size Calculator or shop our complete Sauna Heater Collection.
The HUUM HIVE is a stunning, stainless steel floor-mounted heater designed for sauna rooms up to 1,236 cu. ft. It features a massive 529 lbs stone capacity and heats quickly (20–30 min). Thanks to its Wi-Fi-enabled UKU controller, you can start your sauna from your phone—whether you're home or not.
- Settable Temp: 122–230°F
- Sizes: 12kW, 15kW, and 18kW
- Wi-Fi control + weekly scheduling
- Made in Estonia
Harvia’s Club Series is one of the most popular choices for both residential and commercial large saunas. With multiple power ratings (up to 15kW), this floor-standing heater is UL-listed, ETL-certified, and built from premium stainless steel. It offers rich steam with its 135 lb rock capacity and includes a Xenio digital controller with optional Wi-Fi.
- Temperature Range: 104°F–194°F
- Multiple size options from 388–989 cu. ft.
- Can pour water directly on stones for steam
- Made in Finland
Saunum’s Air L is a game-changer for those who want the most comfortable sauna session possible. It solves the uneven temperature issue many tall saunas have by mixing hot and cool air evenly through the space. It also includes a Himalayan salt tray and optional aromatherapy function, with a massive 412 lb stone capacity and whisper-quiet airflow.
- Temp Range: 104°F–212°F
- Covers up to 741 cu. ft.
- Wi-Fi + programmable AIRIQ controller
- Made in Estonia
The Harvia Cilindro Half Series is a slim, pillar-style heater designed to blend into benches or be placed against glass for a modern look. It has a large stone surface for steam lovers and is extremely versatile with install placement. The included Xenio controller with Wi-Fi adds full remote control to this powerful, reliable unit.
- Heats saunas up to 636 cu. ft.
- Models from 6.0kW to 10.5kW
- 265 lb max stone capacity
- Made in Finland
If you’re building a sauna palace—or running a large commercial setup—the Harvia Virta Pro delivers the power. It’s made for heavy-duty use and offers the best of both convenience and performance. With up to 264 lbs of stone capacity and an included Xenio Wi-Fi controller, this heater makes every sauna session smooth, steamy, and strong.
- For saunas up to 1,130 cu. ft.
- Available in 16kW and 20kW versions
- Fast heat-up, ultra-durable design
- Made in Finland
Final Thoughts
Whether you want sleek design, maximum steam, or cutting-edge tech like climate control and mobile scheduling, these five heaters represent the top choices for large home saunas in 2025. Each is made with durability, safety, and experience in mind—so it comes down to your space, style, and preferences.
Need help choosing the right one? Use our Sauna Heater Size Calculator or reach out through our Custom Sauna Quote Tool.
Don't wait—tariffs on European sauna imports may increase pricing soon. Lock in your heater now while inventory is in the U.S. and shipping is free.
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