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Description
The Harvia Xenio Combi CX30C-U3-XW is a WiFi sauna control unit with a touch control panel for Harvia Virta Combi heaters on 208V 3-phase service. It runs the heater and the built-in steamer independently, so you can set both temperature and humidity, plus lighting and fan. The compact panel can be mounted in the sauna, a shower room, a dressing room or a living area.
Specifications (Harvia)
- Model / part number: Harvia Xenio Combi CX30C, CX30C-U3-XW
- Maximum heater load: 10.8 kW at 208V 3-phase
- Maximum steamer load: 2.1 kW
- Compatible heaters (per Harvia): Harvia Virta Combi series
- Temperature range: 104 to 194 °F (40 to 90 °C)
- Humidity range: 20 to 95% rH
- Timer delay: 0 to 12 h
- Functions: Heater, steamer, lighting and fan control
- Connectivity: WiFi for remote control and monitoring
- Control panel size: 3.35 in W x 4.33 in H x 0.94 in D
- Power unit: Separate power unit, wall mounted
- Certification: ETL
What you need to know before buying
- Controls a Harvia Virta Combi heater only (per Harvia's compatibility list). The heater is sold separately.
- This is a hardwired 208V 3-phase control: a licensed electrician is required.
- Match the heater's kW rating to the 10.8 kW maximum load. Use the Harvia installation manual for breaker and wire sizes.
Warranty
2-year Harvia manufacturer warranty for residential use, plus 1 additional year when registered with Harvia within 30 days of purchase.
Returns
Returns accepted within 30 days of delivery for unused, uninstalled items in original sealed packaging. Return shipping is paid by the buyer, and a restocking fee of up to 15% may apply (up to 50% if packaging is missing or the seal is broken). Installed items are handled as manufacturer warranty claims.
Related
Harvia, Electric sauna heaters, Sauna breaker size calculator
Follow the manufacturer's installation clearances and electrical requirements. Sauna use is not recommended without medical advice if you are pregnant or have a heart condition or low blood pressure.
Specifications
| Model / part number | Harvia Xenio Combi CX30C, CX30C-U3-XW |
|---|---|
| Maximum heater load | 10.8 kW at 208V 3-phase |
| Maximum steamer load | 2.1 kW |
| Compatible heaters (per Harvia) | Harvia Virta Combi series |
| Temperature range | 104 to 194 °F (40 to 90 °C) |
| Humidity range | 20 to 95% rH |
| Timer delay | 0 to 12 h |
| Functions | Heater, steamer, lighting and fan control |
| Connectivity | WiFi for remote control and monitoring |
| Control panel size | 3.35 in W x 4.33 in H x 0.94 in D |
| Power unit | Separate power unit, wall mounted |
| Certification | ETL |
Specifications from the manufacturer. Dimensions are approximate.
Shipping
We ship to the 48 contiguous U.S. states and Washington, DC. Your shipping cost is calculated at checkout and shown before you pay.
You will get an order confirmation right away and tracking by email when your order ships. Questions about timing for a specific item? Call (945) 280-3243 or email support@restoresuite.com before you order.
Delivery
Large items such as saunas, hot tubs and cold plunge tubs usually ship by freight. The carrier contacts you to schedule delivery. Please check the packaging and note any damage on the delivery receipt before you sign, then tell us within 48 hours so we can resolve it for you.
Before delivery day, measure doorways and hallways along the path to the install spot, and confirm the electrical requirement on the Specifications tab.
Warranty
2-year Harvia manufacturer warranty for residential use, plus 1 additional year when registered with Harvia within 30 days of purchase.
If this item has a manufacturing defect within 30 days of purchase, contact us with your order number and a photo or video of the issue and we will make it right.
Reviews
What delivery looks like


Why this heater
WiFi touch control for Harvia Virta Combi heaters: sets temperature and humidity, up to 10.8 kW at 208V 3-phase
- Built for Harvia Virta Combi heaters with steamer
- Heater and steamer controlled independently
- WiFi for remote control and monitoring
- 10.8 kW max load at 208V 3-phase, ETL certified

Key specs at a glance
The numbers to check before you order. Full details are on the Specifications tab.
- Temperature range
- 104 to 194 °F (40 to 90 °C)
- Control panel size
- 3.35 in W x 4.33 in H x 0.94 in D
- Power unit
- Separate power unit, wall mounted
Before you buy: what to know
Based on the manufacturer's specs, manuals and our research.
- This is the 208V 3-phase version of the Xenio Combi control.
- Confirm your heater model is a Harvia Virta Combi before ordering.
Not sure this is the right fit? Ask us or call (945) 280-3243.
Compare Harvia models
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| Model |
Harvia Xenio Combi CX30C WiFi Sauna Control
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Harvia Xenio Combi CX30C WiFi Sauna Control
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Harvia Xenio CX45 WiFi Sauna Heater Control
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Common questions
Which heaters does the CX30C-U3-XW work with?
Is this for 240V single-phase homes?
Does it need an electrician?
What else do I need?
Choosing the right setup can be tricky. We are here to help.
Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.
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