If you ever purchased a sauna kit, then the one person you need to call is Vadim Zadara.
W. M., San Jose · Google review
We had an outdoor prefab sauna assembled at our home and couldn’t be happier with the result!
Jay Y., Foster City · Google review
Harvia
Harvia Fenix FX45-U1-U3-XC Digital WiFi Control for Club, Spirit, Cilindro, Virta & Virta Pro Sauna Heaters
$1,568MSRP $1,742.22Save $174.22
Total$1,568
Shipping is quoted after the order. A sauna moves on a pallet and the price depends on the address. We call you with it before anything ships.
Harvia Fenix FX45-U1-U3-XC
Digital WiFi Control for Club, Spirit, Cilindro, Virta & Virta Pro Sauna Heaters
Smart, Powerful Control for High-Performance Sauna Systems
Transform the way you manage your sauna with the Harvia Fenix FX45-U1-U3-XC, an advanced WiFi-enabled digital control unit designed for Harvia’s most popular heater lines — including Club, Spirit, Cilindro, Virta, and Virta Pro Series. Built for both residential and commercial use, this intelligent controller delivers precision, convenience, and total customization for a superior sauna experience.
Featuring a sleek glass touchscreen, the FX45 allows you to easily adjust temperature, lighting, ventilation, and session duration with just a tap. Its built-in WiFi connectivity enables full remote operation through your smartphone or tablet, ensuring your sauna is ready exactly when you want it.
The system uses AI-driven performance learning, adapting to the heating characteristics of your sauna to optimize warm-up times and overall energy efficiency. Designed for versatility, it supports both surface and flush-mounted installation, and can be placed inside or outside the sauna for maximum layout flexibility.
Features
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Full control of sauna heater, lighting, and ventilation
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AI-powered interface adapts to heater performance for optimized heating
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Premium glass touchscreen panel with intuitive, modern design
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WiFi connectivity for remote control and monitoring
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Temperature control range: 104–194°F
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Pre-set session timer: 0–12 hours
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Designed for surface or flush installation
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Installs inside or outside the sauna room
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Compact size: 3.4"W × 1"D × 4.4"H
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1-year limited warranty (consumer + commercial)
Includes
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Harvia Fenix FX45 Control Panel
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Temperature Sensor
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Note: If your heater includes a sensor, follow the heater’s installation instructions
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Power Unit
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Data Cable
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Installation Materials
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Installation & Operation Manual
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1-Year Limited Warranty (Consumer & Commercial)
Specifications
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Model: FX45-U1-U3-XC
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Maximum Output Rating: 10.8 kW / 15 kW
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Voltage: 240 / 208
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Phase: 1 / 3
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Temperature Range: 104–194°F
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Pre-set Time Range: 0–12 hours
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Dimensions:
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Width: 3.4" (8.6 cm)
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Depth: 1" (2.5 cm)
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Height: 4.4" (11.2 cm)
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Resources
Installation and Operational Manual