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LABOR DAY SALE$250 off orders over $2,500

Code SAUNA250 · Ends September 10

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Harvia Fenix FX45 is a sauna control unit equipped with a 4.3-inch glass touchscreen control panel and support for remote operation through the MyHarvia app. It is designed to control electric sauna heaters up to 11 kW at 240 V or up to 15 kW at 208 V, as well as compatible functions such as lighting and ventilation.

The glass touchscreen control panel can be surface-mounted or recessed and installed inside the sauna, in a bathroom, or in another indoor location such as a living area. The user interface matches the MyHarvia app, allowing you to monitor sauna status and manage settings both locally and remotely.

  • MyHarvia App Support – Remote sauna control via WiFi using the MyHarvia app
  • 4.3" Touchscreen Panel – Glass touchscreen designed for sauna heat and humidity
  • Unified User Interface – Interface matches the MyHarvia app for consistent operation
  • Preset & Custom Profiles – Supports predefined and user-created control profiles
  • Full Sauna Control – Controls heater, temperature, humidity, ventilation, and lighting
  • Adaptive Heater Logic – System adjusts based on heater performance over time
  • Ready-Time Scheduling – Set the time when the sauna should be ready
  • Combi Heater Compatibility – Supports humidity control with compatible Combi heaters
  • WiFi & OTA Updates – WLAN-enabled with Over-the-Air software updates
  • Safety Features – Includes child lock and door sensor support
  • Flexible Installation – Surface-mounted or recessed installation inside or outside the sauna
  • Guided Setup – Built-in setup wizard for installation and configuration
  • UL Certified – Harvia Fenix control products are UL certified for the U.S. market, ensuring compliance and reliability
  • Compatible Models: FX30-U1-U3, FX45-U1-U3, CX30-U1-U3, CX45-U1-U3 (XC / XW variants)
  • Operating Voltage: 240V 1-phase / 208V 3-phase
  • Frequency: 60 Hz
  • Maximum Breaker: 30 A (FX30) / 45 A (FX45)
  • Minimum Supply Wire: 10 AWG (240V) / 8 AWG (208V)
  • Minimum Ground Wire: 6 AWG
  • Protection Rating: IPX3
  • Operating Temperature: 14–104°F
  • Storage Temperature: 32–122°F
  • Temperature Setting Range: 104–194°F
  • Heater Sensor: SP232 / SP232M (included)
  • Optional Bench Sensor: SP325
  • Maximum Sensor Cable Length: 33 ft
  • Mounting Type: Wall-mounted (outside sauna)
  • Minimum Clearance: 15.8 × 13.8 in
  • Dimensions (H × W × D): 10.5 × 14.3 × 2.9 in
  • Weight: 7 lbs
  • Certification: UL Certified for the U.S. market (per Harvia Group)
5.0
Rated 5.0 out of 5 stars
2 Reviews

Control unit Harvia Fenix FX45  208 V/240 V WiFi

SKU: HAR-FX45-U1-U3-XC
Regular price $1,551.00
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Harvia Fenix FX45 is a sauna control unit equipped with a 4.3-inch glass touchscreen control panel and support for remote operation through the MyHarvia app. It is designed to control electric sauna heaters up to 11 kW at 240 V or up to 15 kW at 208 V, as well as compatible functions such as lighting and ventilation.

The glass touchscreen control panel can be surface-mounted or recessed and installed inside the sauna, in a bathroom, or in another indoor location such as a living area. The user interface matches the MyHarvia app, allowing you to monitor sauna status and manage settings both locally and remotely.

  • MyHarvia App Support – Remote sauna control via WiFi using the MyHarvia app
  • 4.3" Touchscreen Panel – Glass touchscreen designed for sauna heat and humidity
  • Unified User Interface – Interface matches the MyHarvia app for consistent operation
  • Preset & Custom Profiles – Supports predefined and user-created control profiles
  • Full Sauna Control – Controls heater, temperature, humidity, ventilation, and lighting
  • Adaptive Heater Logic – System adjusts based on heater performance over time
  • Ready-Time Scheduling – Set the time when the sauna should be ready
  • Combi Heater Compatibility – Supports humidity control with compatible Combi heaters
  • WiFi & OTA Updates – WLAN-enabled with Over-the-Air software updates
  • Safety Features – Includes child lock and door sensor support
  • Flexible Installation – Surface-mounted or recessed installation inside or outside the sauna
  • Guided Setup – Built-in setup wizard for installation and configuration
  • UL Certified – Harvia Fenix control products are UL certified for the U.S. market, ensuring compliance and reliability
  • Compatible Models: FX30-U1-U3, FX45-U1-U3, CX30-U1-U3, CX45-U1-U3 (XC / XW variants)
  • Operating Voltage: 240V 1-phase / 208V 3-phase
  • Frequency: 60 Hz
  • Maximum Breaker: 30 A (FX30) / 45 A (FX45)
  • Minimum Supply Wire: 10 AWG (240V) / 8 AWG (208V)
  • Minimum Ground Wire: 6 AWG
  • Protection Rating: IPX3
  • Operating Temperature: 14–104°F
  • Storage Temperature: 32–122°F
  • Temperature Setting Range: 104–194°F
  • Heater Sensor: SP232 / SP232M (included)
  • Optional Bench Sensor: SP325
  • Maximum Sensor Cable Length: 33 ft
  • Mounting Type: Wall-mounted (outside sauna)
  • Minimum Clearance: 15.8 × 13.8 in
  • Dimensions (H × W × D): 10.5 × 14.3 × 2.9 in
  • Weight: 7 lbs
  • Certification: UL Certified for the U.S. market (per Harvia Group)
LABOR DAY SALE$250 off orders over $2,500

Code SAUNA250 · Ends September 10

5.0
Rated 5.0 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 2
Total 4 star reviews: 0
Total 3 star reviews: 0
Total 2 star reviews: 0
Total 1 star reviews: 0
2 reviews
  • JM
    Jared M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 hours ago
    Fenix controller on our new cilindro

    The Fenix controller works seamlessly in our new sauna. It's well worth the upgrade if you're between a Fenix and Xenio to simply have the wireless control. Being able to heat the sauna up while on the way home from work or the gym adds such an ease to everyday life. Definitely recommend!

    Video coming soon - waiting on drywall tape&texture to be completed tomorow.

  • SL Profile picture for Santiago L.facebook logo
    Santiago L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 weeks ago
    Out with the old and in with the new.

    We have a 496 cu ft custom sauna built in our basement from 2006. The sauna heater was a Finnleo Pikkontuntu with the Digi Ii controller. But the last few years garble information started to appear on the controller requiring a reset. And the Digi Ii controller was discontinued in 2022.

    Now that we plan to sell the house, I wanted the next owner to enjoy the sauna as much as we did but without any issues. I shopped around for replacement 9kw tower heater that would sit in the corner embedded into the benches. The Finnleo Himalaya was too expensive and then I came across a similar Harvia Cilindro model. Along with the Fenix Wifi touchscreen controller. The electricians did a fabulous job installing it and after a quick test, the 3 elements heated the new rocks quickly which feels hotter than the old sauna heater. I also like the 3 heat shields that protect the walls and benches.

    What is also different is a new control box that sits perfectly in a closet behind our sauna. Since it has clear glass fuses, I no longer need the disconnect box with dual large fuses. I also like the Fenix high tech touchscreen controller. Very intuitive and easy to increase or decrease the temperature or use pre-built temperature settings.

    We will definitely utilize the sauna often till we move to our new home next Spring. And definitely look to using Harvia products when we have another sauna built.