Harvia Fenix FX45-U1-U3-XC Smart Sauna Control Unit
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Harvia | Connected control for your home sauna
Harvia Fenix FX45-U1-U3-XC Smart Sauna Control
The Harvia Fenix FX45-U1-U3-XC brings a refined 4.3-inch glass touchscreen to compatible electric sauna heaters. Designed for 240V single-phase or 208V three-phase installations, it combines intuitive sauna settings with supported lighting and ventilation control.
Wi-Fi connectivity supports MyHarvia monitoring. Remote control through the app or WebPortal is available with the MyHarvia Control Upgrade and the required installation setup, adding convenience to your home wellness routine.
Signature Features
High-Capacity Heater Support
Harvia lists capacities of up to 11 kW at 240V or 15 kW at 208V. Confirm the permitted connection configuration for your exact heater.
Wi-Fi and MyHarvia
Monitor sauna status through MyHarvia and add supported remote-control functions with the MyHarvia Control Upgrade.
Premium Glass Touchscreen
The 4.3-inch display provides a clear interface for temperature settings, sauna readiness, and supported auxiliary functions.
Adaptive Interface
The Fenix interface learns and adapts to your electric heater's performance to support everyday sauna operation.
Lighting and Ventilation
Manage compatible lighting and fan equipment connected according to the control unit's specifications.
Flexible Panel Mounting
Surface or recessed mounting lets the touchscreen fit your interior. Follow the panel's placement and temperature limits for installation inside or outside the sauna.
Technical Specifications
| Model | FX45-U1-U3-XC |
|---|---|
| Supported Equipment | Compatible electric sauna heaters and supported lighting and ventilation accessories |
| Electrical Supply | 240V single-phase or 208V three-phase |
| Published Heater Capacity | Up to 11 kW at 240V / 15 kW at 208V |
| Single-Group Connection Limit | 10.8 kW at 240V / 15 kW at 208V, per installation manual |
| Temperature Setting Range | 104 to 194 °F / 40 to 90 °C |
| Display | 4.3-inch glass touchscreen |
| Panel Dimensions (W × D × H) | 93 × 20 × 131 mm Approximately 3.66″ × 0.79″ × 5.16″ |
| Connectivity | Wi-Fi / MyHarvia monitoring; remote control requires MyHarvia Control Upgrade |
| Panel Installation | Surface or recessed mounting, within the panel's installation limits |
| Power Unit Installation | Wall-mounted outside the sauna in a suitable dry location |
| Optional Power Extension | LTY45-U1-U3, subject to heater compatibility and the prescribed wiring configuration |
| Warranty | Harvia limited warranty; see the linked document for applicable coverage and conditions. |
The permitted heater output depends on supply voltage and connection configuration. Have your installer confirm compatibility using the heater nameplate and control manual.
What's Included
- Fenix glass-touch control panel
- FX45 power unit
- 5 m RJ10 panel data cable
- Temperature sensor and 4 m cable
- Mounting screws and installation materials
- Installation and operation instructions
Confirm any separately required remote-operation safety device, optional sensors, and MyHarvia upgrade before ordering.
Warranty Coverage
Review Harvia's warranty document for coverage, eligibility, and exclusions applicable to your control system. Keep your purchase and installation records for future support.
Why Choose the Harvia Fenix FX45?
- A refined touchscreen interface for premium home wellness interiors.
- Coordinated control of your compatible heater, lighting, and ventilation.
- MyHarvia monitoring with an upgrade path to supported remote operation.
- Flexible panel placement for a clean, integrated appearance.
- Support for compatible higher-output heaters across two electrical configurations.
Product Manual and Warranty
Review heater compatibility, installation requirements, and warranty terms before ordering.
Plan Your Connected Sauna
Need help matching the FX45 to your heater, electrical supply, or MyHarvia features? Our sauna specialists can help you select the right control setup.
Why Buy From Us
Shop trusted wellness brands with authorized dealer support and help choosing the right equipment.
Help understanding coverage and coordinating warranty inquiries. Coverage and registration requirements vary by brand and product.
Personal guidance from My Luxury Home Spa before, during, and after your purchase.
Ordering & Product Support FAQs
Shipping & Delivery
Free standard shipping is available on eligible products and destinations. Large equipment generally ships by freight with curbside delivery unless another service is expressly included.
White-glove placement, assembly, or other upgraded services may be available for select products and locations at an additional cost. Availability, scope, and pricing must be confirmed before booking. Processing, transit, and delivery scheduling vary by product and destination.
Review our Shipping Policy, or contact us before ordering if you need placement assistance or delivery by a particular date.
Warranty
Manufacturer warranty coverage varies by brand, model, component, and intended use. Review the product’s warranty documentation for coverage periods, exclusions, and any registration requirements. Commercial use may have different terms.
For warranty assistance, contact My Luxury Home Spa with your order number, model, serial number, and a description of the issue. We can help coordinate the next steps with the manufacturer or supplier.
Returns
Return eligibility, deadlines, fees, and shipping responsibilities vary by product. Some products have shorter return windows or specific restrictions. Eligible change-of-mind returns generally require unused equipment in its original packaging and written authorization before shipment.
Review our Return & Refund Policy and any product-specific terms before purchasing. Contact us promptly about damaged, defective, or incorrect items; these are reviewed separately from change-of-mind returns.
Installation & Power
Electrical, assembly, foundation, ventilation, drainage, and clearance requirements vary by product. Check the exact model’s specifications and manufacturer instructions before ordering or preparing your space.
Use qualified professionals where required. Delivery or optional placement service does not include electrical wiring, plumbing, site preparation, or full installation unless expressly included in your written service scope. Contact us if you need help locating the appropriate product documentation.
