Harvia Virta Sauna Heater (Xenio Smart Control)
Harvia Virta Sauna Heater (Xenio Smart Control)
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Harvia Virta Sauna Heater
The Harvia Virta Sauna Heater with Xenio Smart Control is Harvia's classic rectangular electric sauna heater, brushed stainless steel housing, vertical stone bed, top-loaded, paired with the external Harvia Xenio CX digital power unit for full WiFi/app control via the MyHarvia smartphone app. Available in 6 kW, 8 kW, 9 kW, or 10.5 kW at 240V 1-Phase (10.5 kW also offered in 208V 3-Phase for light-commercial installations). Optional Fenix touchscreen upgrade adds Harvia's next-generation control UI.
Pick the Right kW for Your Cabin
Each Virta size is rated for a specific sauna cabin interior volume. Calculate your cabin volume as interior length × width × height. If the cabin includes a glass door or window, add roughly 25% to the calculated volume to compensate for radiant heat loss.
| Model | Best For | Cabin Volume | Amperage | Xenio Control | Stones |
|---|---|---|---|---|---|
| Virta 6 kW | Standard residential 2–3 person sauna cabins | 210–318 cu ft | 25 Amps | Xenio CX30 | 3 boxes |
| Virta 8 kW | Standard to large residential sauna cabins (3–5 person bench) | 280–460 cu ft | 33.3 Amps | Xenio CX45 | 3 boxes |
| Virta 9 kW | Large residential sauna cabins (4–5 person bench) | 318–530 cu ft | 37.5 Amps | Xenio CX45 | 3 boxes |
| Virta 10.5 kW | The largest residential sauna cabins (5–6 person bench) and light-commercial installations | 388–636 cu ft | 43.75 Amps | Xenio CX45 | 4 boxes |
Key Features
- Classic rectangular electric sauna heater, brushed stainless steel housing with vertical stone bed across the front.
- Top-loaded design with floor or wall-stand mounting (Harvia heater-rated stand sold separately).
- Pairs with the external Harvia Xenio Smart Control power unit: CX30 for the 6 kW model, CX45 for the 8 / 9 / 10.5 kW. WiFi-enabled, MyHarvia app compatible.
- Available in 4 residential sizes (6 / 8 / 9 / 10.5 kW); 10.5 kW also offered in 208V 3-Phase for light-commercial installs.
- Optional Fenix Upgrade (Tier 3) adds Harvia's next-generation FX004XW touchscreen display on top of the Xenio CX.
- Ships with 3–4 boxes of AC3020 olivine diabase stones in Tier 2+, sized for the heater's vertical stone bed.
- UL Listed and backed by Harvia's 2-year residential warranty.
- For commercial-grade output above 10.5 kW, see the Virta Pro 16 kW (HL16U1) and 20 kW (HL20U3) sibling line.
What's Included
| Package | Includes |
|---|---|
| Virta Just Heater |
|
| Virta Heater + Control + Stones |
|
| Virta Heater + Control + Stones + Fenix Upgrade |
|
| Ultimate Package: Heater + Control + Stones + All Accessories |
|
Xenio CX + Fenix Upgrade, What's the Difference?
Tier 2 ("Virta Heater + Control + Stones") bundles the Harvia Xenio CX Smart Control power unit (auto-matched to kW: CX30 for the 6 kW Virta, CX45 for the 8 / 9 / 10.5 kW Virta). The Xenio CX ships with WiFi built in and connects to the MyHarvia smartphone app for remote start and scheduling.
Tier 3 ("Virta Heater + Control + Stones + Fenix Upgrade") adds the Harvia Fenix FX004XW Touchscreen Display on top of the Xenio CX, Harvia's next-generation control UI, for the longest-runway platform investment as Harvia eventually transitions from the Xenio control panel to the Fenix touchscreen across the product line.
Sauna Stones
Every "Heater + Control + Stones" package (and the Fenix Upgrade tier) ships with the correct quantity of Harvia AC3020 sauna stones, olivine diabase, 10–15 cm size grade, 20 kg (44 lb) per box. The larger 10–15 cm grade is preferred for Virta because the heater's tall vertical stone bed packs more efficiently with bigger stones, and the larger thermal mass holds heat longer through repeated water throws. Stone quantity by kW: 3 boxes (6 / 8 / 9 kW), 4 boxes (10.5 kW).
Installation & Electrical Requirements
Every Virta requires a dedicated 240V 1-Phase (or 208V 3-Phase on 10.5 kW light-commercial installs) circuit wired by a licensed electrician. Required amperage and wire gauge varies by kW, see the table above. Virta is UL Listed.
Installation Manual
Click Here to Download the Harvia Virta Installation Manual
About the Harvia Virta Family
Harvia Virta is the company's classic rectangular electric sauna heater, brushed stainless steel housing, vertical stone bed across the front, top-loaded, designed to mount on either the floor or a heater-rated stand along the cabin wall. The Virta delivers Harvia's signature soft, even löyly across a wide range of cabin volumes from 200 cu ft up to roughly 650 cu ft on the 10.5 kW residential variant.
Every Virta requires an external Harvia Xenio Smart Control power unit (CX30 for 6 kW; CX45 for 8 / 9 / 10.5 kW), the controller ships separately and mounts outside the sauna cabin. The optional Fenix Upgrade swaps the Xenio's standard control panel for Harvia's next-generation FX004XW touchscreen.
For commercial-grade output beyond 10.5 kW, see the Virta Pro 16 kW (HL16U1) and 20 kW (HL20U3) sibling line, sold separately.
Why Buy From Finnish Sauna Builders
As an authorized Harvia dealer, Finnish Sauna Builders sources every heater direct from Harvia US (Lewisburg, WV) with full factory warranty and dealer technical support. Free shipping on all Harvia heaters; white-glove install coordination available nationwide.
Warranty & Support
Harvia Virta carries Harvia's standard 2-year residential limited warranty. Finnish Sauna Builders handles all warranty claims direct, no third-party return desk.
About Harvia
Harvia has been building world-class sauna heaters in Finland since 1950. Every Harvia product carries forward more than 70 years of Finnish craftsmanship, materials science, and a relentless focus on the perfect löyly, the heated, humid burst of steam released when water meets hot sauna stones.