Controllers
A sauna controller is matched to the brand and the heater model. HUUM heaters take the UKU, local or Wi-Fi. Harvia heaters take a Xenio or the newer Fenix. Saunum heaters take the AirIQ. Wi-Fi lets you heat the room before you walk out to it. A HUUM heater rated 12 kW or more also needs the UKU Extension Box, so put it on the same order. Your heater’s page lists the controller it takes.
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Harvia Xenio CX30C-U1-XW Wi-Fi Combi Sauna Control | Virta Combi, 240 V Single-Phase to 12.7 kW
$1,183.00The CX30C is the Xenio control built for combi heaters, the ones with a water tank and a steamer alongside the rocks. It switches the heater elements and the steamer, and it takes a WX325 humidity sensor alongside the temperature sensor, so you can set a humidity target instead of ladling water and hoping. Rated 12.7 kW at 240 V single-phase with two supply wires between heater and power unit. The -XW panel is the Wi-Fi panel.
Harvia Xenio CX30-U1-U3-XW
$973.00Harvia Xenio is a sauna control unit with a touch control panel. Xenio provides a modern and subtly stylish user interface for controlling the heart of the sauna, the heater. The stylishly small yet clear touch control panel is easy to install where you want it: in the sauna, the shower room, the dressing room, or even the living room. The control panel enables you to see with just one look when your sauna is at the right temperature for you.
Harvia Xenio LTY45
$600.00Harvia power extension unit LTY45 is used for the control of additional electric sauna heaters in large saunas. By using the power extension unit LTY45 the maximum load range can be increased up to 38 kW (the maximum load depends on the type of the control unit).
HUUM UKU Extension Box
$773.00The UKU Extension Box works with the UKU control system on the specified higher-output heater installation. Full-size HIVE 12, 15 and 18 kW require it. It does not replace the UKU controller or main module.
Choosing the heater too? Start with HUUM HIVE to size the heater and choose the rest of your package.
Harvia Xenio CX45 Wi-Fi Control System
$1,292.00Wi-Fi digital control system for larger Harvia electric sauna heaters, rated up to 17 kW. Single- or three-phase.
Saunum AirIQ Wi-Fi Control System
$1,295.00The best time to plan AirIQ is before the sauna wall is closed. This is the Wi-Fi touchscreen control system for compatible U.S. Saunum Air, Air L, and Air Perfect heaters. It manages 104–194°F temperatures, three saved sauna profiles, weekly scheduling, three fan speeds, ready alerts, and remote control through the Saunum app. AirIQ uses 2.4 GHz Wi-Fi, requires licensed-electrician installation, and the panel belongs outside the sauna room. Heater sold separately; contact us before a retrofit so we can verify the exact model and cable plan.
Harvia Xenio CX170 Wi-Fi Control System
$1,035.00Wi-Fi control for compatible Harvia electric heaters. Set the temperature, schedule a session, and start the room from your phone.
Saunum AirIQ Fan Button Set
$273.28Wood button accessory for the Saunum AirIQ control. Mounts on a sauna wall or bench and lets you turn the ventilation fan on or off from inside the sauna. Includes cable and installation instructions. Saunum part number AUTOOO020000480.
Harvia Fenix Upgraded Sauna Controller
Price range: $595.80 through $1,551.00Harvia Fenix Control series offers Wi‑Fi enabled 4.3″ touchscreen controls for Harvia sauna heaters and Virta Combi units. Models FX30‑U1‑U3‑XC (7 kW at 240 V/10.5 kW at 208 V), FX45‑U1‑U3‑XC (11 kW at 240 V/15 kW at 208 V), FX30C‑U1‑XC (10.8 kW combi) and FX30C‑U3‑XC (12.7 kW combi) provide remote control via the MyHarvia app; combi versions also manage the integrated steamer.4 variations
Harvia WX237 Temperature Sensor Cable | 30 ft Extension
$57.00The cable that comes in the box is fine until the control panel ends up on the far side of the changing room. This is the 30 foot Harvia sensor extension: colour-coded conductors so an electrician can land them without guessing, and an outer jacket built for the run between a hot room and a dry-side panel. Order it with the heater. Discovering you are eight feet short on install day is a wasted trip for somebody.
HUUM UKU 4.2 Sauna Control | Local & Wi-Fi Packages
Price range: $1,062.00 through $1,987.00Latest UKU 4.2 guaranteed. Every new complete UKU controller ordered from Sauna Marketplace ships as 4.2, separately or with a HUUM heater package. Get the new bench temperature/humidity sensor, a separate safety sensor, heat-resistant cabling and updated door-sensor kit. Choose Local for wall-panel control or Wi-Fi for HUUM app control.
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