Smart-control platform: Xenio installed base, Fenix 2025 flagship
P.09Flagship
Xenio CX / Fenix FX
Specs from harvia.com and Harvia Plc materials, in US units. Check the current Harvia manual before you wire or install.
Xenio is the control panel Harvia's CEO calls a "huge seller." Fenix went on sale in Q3 2025 with a 4.3" full touchscreen, WiFi, over-the-air updates, and backward-compatible wiring.
Harvia runs two generations of control platform. Xenio is the large installed base, which Harvia's CEO calls a "huge seller." Fenix is the 2025 flagship: 4.3-inch full touchscreen, MyHarvia WiFi app control, over-the-air firmware updates, and critically, backward-compatible wiring so Xenio owners upgrade without rewiring the heater. The MyHarvia app is the unifying interface across both: temperature, humidity, lighting, ventilation, week timers, multi-sauna control for commercial operators, and the new MyHarvia Smart Sauna Sensor that retrofits any existing sauna. Fenix sales started Q3 2025. CEO Järnefelt flagged "really great performance" in Q4.
Any Harvia heater install from 2020 onward. Xenio owners ready to upgrade without rewiring. Commercial operators who want OTA firmware updates and remote control. Households where multi-user scheduling justifies a WiFi panel.
Editorial analysis for context, not a purchase recommendation.
Room sizes in cubic feet, stone loads in pounds.
From earnings calls, investor presentations, annual reports, and the Harvia catalog.
“We've introduced innovation such as the Harvia Fenix control panel... The sales started in third quarter, and it showed really great performance during the quarter four.”
CEO Matias Järnefelt, Q4 2025 earnings call
Fenix launch performance highlight
“Exciting 4.3-inch full touchscreen product. It's very easy to use with, for example, ready-made presets like mild, cozy, and hot.”
CEO Matias Järnefelt, Q3 2025 earnings call
Fenix launch announcement. English-language investor materials sometimes transliterate "Fenix" as "Phoenix"
“It's backwards compatible with huge seller Harvia Xenio control panel.”
CEO Matias Järnefelt, Q3 2025 earnings call
Upgrade path for the large Xenio installed base
“Definitely the most advanced sauna app.”
CEO Matias Järnefelt, Q3 2025 earnings call
MyHarvia app positioning
“I have a dream that Harvia could be ... Google is practically a synonym for internet search, or Tesla became the icon for electric cars, that Harvia would be the icon of sauna.”
CEO Matias Järnefelt, Q4 2025 earnings call
Answering a question on the value of the Harvia brand
Check each note against the current Harvia manual and your local code.
N.01
Harvia positions Fenix as backward-compatible with the Xenio wiring footprint, the upgrade path the CEO specifically highlighted on the Q3 2025 earnings call. For older Xenio units, verify the model label and wiring with a Harvia dealer before ordering Fenix as a straight replacement.
N.02
The official product name is "Fenix" (Finnish / Latin). Some English-language investor call transcripts transliterate the name as "Phoenix." They refer to the same product. Use "Fenix" when searching harvia.com or Harvia product documentation.
N.03
Fenix supports over-the-air firmware updates via the MyHarvia app. For commercial operators running multiple Harvia saunas, that means firmware and feature updates roll out without a service visit. Harvia has indicated continued investment in the MyHarvia platform, so expect the OTA update stream to be the delivery vehicle for future Fenix feature additions.
N.04
Different Fenix and Xenio power units carry different maximum loads, and the US units change rating with voltage: Harvia lists the CX45 at 17 kW on 240V and 15 kW on 208V, and the FX45 at 11 kW on 240V and 15 kW on 208V. Heater manuals also tie the choice to amperage and circuit layout. Harvia's US Cilindro E manual requires a CX45 for the 8 to 10.5 kW models on a single circuit, and its US Virta Pro manual pairs the 20 kW HL20U3 with a CX30 or CX45 plus the LTY45 power extension unit. Confirm against the heater manual before ordering.
Product, detail, and technical images from the Harvia Media Bank.
Images: Harvia Media Bank, courtesy of Harvia Plc, unless the caption says otherwise.
MyHarvia Smart Sensor
A retrofit smart sensor that Harvia says turns any sauna, even a wood-burning one, into a connected sauna
Cilindro PC series (electric)
Harvia's pillar-format electric heater with an open stainless stone lattice
Virta Pro HL series
Commercial electric workhorse for hotels, gyms, and spa operators
Product data comes from Harvia Plc investor materials, earnings call transcripts, harvia.com, and harviagroup.com. Quotes carry their source where a public one exists. SaunaNews is not affiliated with Harvia Plc; this page is a product record for news coverage, not a sales page. Spot an error or an outdated spec? Tell the newsroom .
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