Harvia Fenix FX45-U1-U3-XC Smart Sauna Control Unit
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The Smart Sauna Control Unit is built for serious luxury home wellness installations. Engineered for high-output electric sauna heaters (up to 11 kW at 240 V or 15 kW at 208 V), this all-in-one WiFi-enabled system combines a sleek 4.3″ glass-touch control panel with full mobile app integration via MyHarvia—putting precise control of temperature, lighting, ventilation and scheduling at your fingertips. Ideal for upscale residential saunas, premium wellness rooms, or builders who demand high-end wellness components, it delivers elevated function and refined aesthetics.
Signature Features
- High-Capacity Heater Support — Supports sauna heaters up to 11 kW at 240 V or 15 kW at 208 V, making it perfect for large scale or premium installations.
- WiFi Smart Control — Built-in connectivity lets you use the MyHarvia app (iOS & Android) to start, stop, schedule and monitor your sauna remotely.
- Premium Glass-Touch Interface — Stylish 4.3″ (approximate) glass panel designed to operate reliably in sauna environments and match high-end interiors.
- Intelligent Heating Curve Learning — The unit adapts to your heater’s performance to optimize warm-up time, consistency and efficiency.
- Comprehensive Sauna Climate Control — Manages heater, thermostat, lighting and ventilation/fan (depending on installation) for a fully integrated experience.
- Flexible Mounting — Panel can be surface- or flush-mounted, inside or outside the sauna room, allowing seamless integration into premium spaces.
Specifications
| Model | FX45-U1-U3-XC |
| Maximum Output | 11 kW at 240 V (1 phase) / 15 kW at 208 V (3 phase) |
| Temperature Adjustment Range | 104 °F–194 °F (40 °C–90 °C) |
| Timer / Pre-Setting Range | 0–12 hours (pre-setting) |
| Panel Dimensions | Approx. 3.4″ W × 1″ D × 4.4″ H (8.6 cm × 2.5 cm × 11.2 cm) |
| Connectivity | WiFi + MyHarvia mobile app support |
| Installation Location | Wall-mounted power unit, panel inside or outside sauna per install guidelines |
| Warranty | 1-Year Limited Warranty (Consumer / Commercial) |
What’s Included
- Fenix FX45-U1-U3-XC Control Unit (panel + power module)
- Panel data cable (typical length 5 m RJ10)
- Temperature sensor & cable (4 m)
- Mounting hardware & installation materials
- Installation & Operation Manual
- Warranty Documentation
Warranty Coverage
- 1-Year Limited Warranty — Coverage for manufacturing defects and consumer use as per manufacturer policy.
Warranty valid only for original purchaser with proper installation by a qualified professional; misuse, unauthorized modifications or wiring errors may void coverage.
Why Choose the Harvia Fenix FX45-U1-U3-XC?
- Designed for premium and large-format saunas up to 15 kW—ideal within high-end home wellness environments.
- Intuitive touchscreen plus full smart-app integration gives you control whether you’re onsite or remote.
- Sophisticated design with high-quality materials fits seamlessly into luxury spa interiors featured at MyLuxuryHomeSpa.com.
- Adaptive intelligent control means consistent performance and optimized warm-up cycles for an effortless sauna experience.
- Harvia heritage ensures reliability and support from one of the leading sauna systems manufacturers.
Pro Tip
Position the panel outside the hottest zone of the sauna—ideally on the outer wall or just adjacent to the sauna door—to ensure optimal sensor accuracy and comfortable operation. Use the mobile app scheduling feature to pre-heat your sauna during low-electricity-demand hours and sync ventilation start with the control panel’s schedule for a refined, ready-when-you-are experience.
Why Buy From Us
FAQs
Shipping & Delivery
Free curbside shipping on all orders. White-glove delivery/setup available at checkout in most areas. We’ll confirm your preferred date after purchase.
Warranty
Full manufacturer warranty, registered at purchase. Need help with a claim? Our U.S. support team handles it directly with the brand.
Returns
New, uninstalled items can be returned within the brand’s policy window. We’ll help coordinate pickup and any restocking requirements.
Installation & Power
Most saunas/hot tubs require dedicated circuits. We provide spec sheets and can recommend licensed installers in your area.
