ThermaSol Launches Premium North American Sauna Line: Astra, Fortis, Ombra

ThermaSol, the Texas-based wellness brand Harvia acquired for USD 30.4 million in July 2024, introduced a refreshed premium sauna collection in Q3 2025: the ThermaSol Astra, ThermaSol Fortis, and ThermaSol Ombra. The launch was confirmed as part of Harvia’s Q3 2025 investor presentation on 6 November 2025. It is the first major product extension for ThermaSol since the Harvia acquisition and moves the brand from steam specialist into full premium sauna. (See every Harvia product launch and earnings event in our Harvia News hub.)

Specs, prices and dates are not yet published

The collection comprises three models positioned for the US premium sauna market. ThermaSol Astra, ThermaSol Fortis, and ThermaSol Ombra were all previewed in Harvia’s Q3 investor deck with rendered product imagery, though full specifications, pricing, and availability dates were not published in the earnings materials. ThermaSol is expected to release complete product pages on its website alongside the commercial launch.

The line is aimed at the premium North American sauna market. Historically, ThermaSol’s business was centered on steam showers, steam generators, ThermaTouch digital controls, smart shower components, and accessories, with a sideline in distributing indoor and outdoor saunas and traditional sauna heaters (including Harvia heaters before the acquisition). Under Harvia ownership, the ThermaSol brand is being extended into the full premium sauna category with Harvia Group engineering behind the new sauna models.

Harvia bought ThermaSol for steam; now ThermaSol sells sauna

At the time of the July 2024 acquisition, Harvia disclosed that over 90% of its revenue was coming from traditional sauna (not steam), and that building a meaningful steam presence in North America was a key strategic objective. The ThermaSol deal gave Harvia one of the largest US residential steam brands, a position in steam solutions, which Harvia estimated at about 20% of the North American sauna market, and a nationwide network of plumbing wholesalers and kitchen-and-bath showrooms.

The Astra/Fortis/Ombra launch goes the other direction, extending ThermaSol from steam specialist into premium sauna for the US residential market. It applies the “full sauna experience” strategy Harvia described at its Capital Markets Day 2024 in reverse: instead of adding steam to Harvia, Harvia is adding sauna to ThermaSol.

Cross-sell into the existing channel

ThermaSol’s existing distribution is heavily weighted toward kitchen and bath showrooms, plumbing wholesalers, and high-end residential builders. These are channels where Harvia and Almost Heaven have historically been underrepresented. By extending the ThermaSol brand into sauna (rather than introducing Harvia or Almost Heaven branding into these showrooms), Harvia Group gets the premium sauna category into a distribution channel it did not previously serve, without forcing the showroom owners to stock a new brand name.

Harvia’s Q1 2025 earnings call noted that the ThermaSol brand was “refreshed to build further excitement for our Steam and high-end product offering.” The Astra/Fortis/Ombra collection is the product side of that refresh.