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Harvia Xenio CX45-U1-U3-XW Digital Control w/WiFi For Sauna Heaters

by Harvia
Save $407.00 Save $407.00
Original price $1,699.00
Original price $1,699.00 - Original price $1,699.00
Original price $1,699.00
Current price $1,292.00
$1,292.00 - $1,292.00
Current price $1,292.00
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Harvia Xenio CX45-U1-U3-XW Digital Control w/WiFi for Club, Spirit, Cilindro, Virta, and Virta Pro Series Sauna Heaters

The Harvia Xenio CX45-U1-U3-XW is the higher-capacity Xenio control unit with built-in WiFi for the Club, Spirit, Cilindro, Virta, and Virta Pro series Harvia sauna heaters. It handles single-phase loads up to 17kW and three-phase loads up to 15kW - the correct control for Harvia's larger and commercial-grade heaters that exceed the CX30's capacity. The XW in the model name designates built-in WiFi: unlike the standard CX45 which requires the separate CX004WIFI panel to add app connectivity, the CX45-U1-U3-XW has WiFi integrated directly into the control unit. Touch panel control of temperature, time, lighting, and fan is available locally; the MyHarvia app on iOS or Android provides the same control remotely from anywhere. The CX45-U1-U3-XW is not compatible with Virta Combi heaters, KIP series, The Wall series, or Vega series heaters.

CX45 vs CX30 - higher load capacity for larger heaters

The Harvia Xenio control family has two capacity tiers. The CX30 handles heaters up to 10.5kW on single-phase and is the correct control for KIP, Spirit 6kW, Cilindro 6kW, and Virta 6kW installations. The CX45 handles heaters up to 17kW on single-phase and 15kW on three-phase - the correct control for Spirit 8kW, Cilindro 8/9/10.5kW, Virta 8/9/10.5/16/20kW, Club 10/12.5/15kW, and Virta Pro 16/20kW installations. Both the CX30 and CX45 use the same Xenio touch control panel interface and the same MyHarvia app; the power unit inside the CX45 is rated for the higher current draw of the larger heaters. Using a CX30 with a heater that requires a CX45 will result in incorrect operation and potential damage. Confirm the heater's required control unit before purchasing by checking the heater's installation manual or the compatibility note below.

Built-in WiFi and MyHarvia app - the XW advantage

The standard CX45 (without XW suffix) requires the CX004WIFI add-on panel to enable WiFi and MyHarvia app control. The CX45-U1-U3-XW has WiFi built in - no separate panel purchase, no additional mounting position. The same MyHarvia app functions available with the CX004WIFI are available directly through the CX45-U1-U3-XW: remote on/off, temperature control, lighting and fan management, timed start, week timer scheduling, live session monitoring, and FOTA automatic firmware updates over WiFi. The CX45-U1-U3-XW covers both single-phase (U1) and three-phase (U3) wiring configurations in a single unit, with the voltage and phase configuration set at installation.

Touch panel, surface or flush mount, inside or outside the sauna

The CX45-U1-U3-XW touch control panel measures 3.4"W x 1.0"D x 4.4"H and can be installed as a surface mount or embedded flush into the wall. It can be positioned inside the sauna room at the correct safety distance from the heater (maximum 1 meter / 39" from floor if inside the sauna), in the changing room, or in any adjacent room - the same installation flexibility as the CX30 and CX004WIFI panels. The touch panel operates in the 104-194°F (40-90°C) temperature range with a maximum humidity of 99% non-condensing, making it suitable for in-sauna installation at the specified safety distances. A data cable connects the control panel to the power unit, which mounts in the electrical service area outside the sauna room.

Higher-capacity Xenio digital control unit with built-in WiFi for Club, Spirit, Cilindro, Virta, and Virta Pro series Harvia heaters. Up to 17kW single-phase / 15kW three-phase. Built-in WiFi - no separate CX004WIFI panel needed. MyHarvia app - iOS and Android - remote on/off, temperature, lighting, fan, timed start, week timer, FOTA firmware updates. Touch control panel. Covers U1 (single-phase) and U3 (three-phase) installations. Surface or flush mount. Installs inside or outside sauna room. 3.4"W x 1.0"D x 4.4"H. Not compatible with Combi, KIP, The Wall, or Vega heaters. ETL Listed. 1-year warranty. Made by Harvia, Finland.
Built-in WiFi - no separate WiFi panel needed Up to 17kW single-phase / 15kW three-phase Club, Spirit, Cilindro, Virta, Virta Pro series Covers U1 (1PH) and U3 (3PH) installations MyHarvia app - iOS and Android Remote on/off and temperature control Timed start and week timer FOTA automatic firmware updates Touch control panel - 3.4" x 1.0" x 4.4" Surface or flush wall mount Inside or outside sauna room Not compatible with Combi, KIP, The Wall, or Vega ETL Listed 1-year warranty

Specifications

Electrical and capacity

Supply voltage 240V / 1-phase (U1) or 208V / 3-phase (U3)
Maximum load - single phase 17 kW
Maximum load - three phase 15 kW
Certification ETL Listed

Compatibility

Spirit series 8kW (CX45 required)
Cilindro series 8kW, 9kW, 10.5kW
Virta series 8kW, 9kW, 10.5kW, 16kW, 20kW
Club series 10kW, 12.5kW, 15kW
Virta Pro series 16kW, 20kW
NOT compatible with Combi (use CX30C), KIP (use CX30), The Wall (built-in), Vega (built-in/Xenio WiFi)

Physical

Dimensions (W x D x H) 3.4" x 1.0" x 4.4" (86 x 25 x 112 mm)
Installation options Surface mount or flush wall mount
Location Inside sauna (max 39"/1m from floor) or outside
Operating temperature 104-194°F (40-90°C)
Max humidity 99% non-condensing

MyHarvia app functions

App availability iOS (App Store) and Android (Google Play) - free
Heater control Remote on/off
Temperature range 104-194°F (40-90°C)
Lighting and fan control Yes - on/off from app
Timed start Schedule sauna to be ready at a specific time
Week timer Regular recurring sauna schedule
Status monitoring Temperature, heating time, heater state
Firmware updates FOTA - automatic over WiFi

CX30 vs CX45 - which do I need?

CX30 (up to 10.5kW / 1PH) Spirit 6kW, Cilindro 6kW, Virta 6kW, KIP series
CX45 (up to 17kW / 1PH) Spirit 8kW, Cilindro 8-10.5kW, Virta 8-20kW, Club 10-15kW, Virta Pro 16-20kW
CX30C (Combi) Virta Combi HL80SA, HL90SA, HL110SA only

Warranty

Warranty period 1 year from date of purchase
SKU CX45-U1-U3-XW
Origin Harvia - Finland

What's included

Xenio CX45-U1-U3-XW digital control panel with built-in WiFi
Power unit
Data cable
Temperature sensor
Installation and operation manual

Free: MyHarvia mobile app - download from App Store or Google Play. Requires: Compatible Harvia heater (Club, Spirit, Cilindro, Virta, or Virta Pro series - not included). A licensed electrician is required for all electrical connections.


Why the Harvia Xenio CX45-U1-U3-XW stands out

Built-in WiFi - complete in one unit

The XW suffix means WiFi is integrated directly into the CX45 control unit. The standard CX45 requires the separate CX004WIFI panel to add app control, adding cost and an additional mounting position. The CX45-U1-U3-XW delivers the full MyHarvia app experience - remote preheat, scheduling, monitoring, and FOTA updates - without any additional hardware purchase.

Up to 17kW - the high-capacity Xenio

The CX45 handles single-phase loads up to 17kW and three-phase loads up to 15kW - the power tier required for Cilindro 8-10.5kW, Virta 8-20kW, Club 10-15kW, and Virta Pro 16-20kW installations. The CX30 maxes out at 10.5kW; any Harvia heater above this requires the CX45. Using the wrong capacity control unit risks incorrect operation and potential warranty issues.

Covers U1 and U3 in one SKU

The CX45-U1-U3-XW covers both single-phase (U1, 240V) and three-phase (U3, 208V) wiring configurations. For commercial sauna installations on three-phase power, the same control unit is used with the appropriate three-phase wiring configuration as described in the IOM. No separate U3-specific SKU is needed.

Remote preheat from anywhere

Turn the sauna on from the MyHarvia app before leaving the office or from the couch. Schedule timed starts for regular sauna sessions, or set a week timer to have the sauna ready every Saturday morning automatically. For commercial installations, the remote monitoring capability lets a facility manager check sauna status across multiple units without physically visiting each room.

FOTA automatic firmware updates

The CX45-U1-U3-XW receives firmware updates automatically over WiFi when connected to the MyHarvia network. No manual update process or USB connections. The control software stays current with the latest Harvia improvements as they are released, without any action required from the owner or facility manager.

Inside or outside sauna room

The 3.4"W x 1.0"D x 4.4"H panel installs as a surface mount or flush-mount and can be positioned inside the sauna room at the correct safety distance from the heater (maximum 1m from floor), in the changing room, or in any adjacent room. The touch panel operates across the full sauna temperature and humidity range at the correct safety distances.


About Harvia

Harvia Xenio CX45-U1-U3-XW digital sauna control panel with built-in WiFi for Club Spirit Cilindro Virta and Virta Pro series heaters
Harvia - Finland - ETL Listed

Harvia Xenio CX45-U1-U3-XW. Higher-capacity Xenio with built-in WiFi for the Club, Spirit, Cilindro, Virta, and Virta Pro series.

Harvia is a Finnish sauna and spa company with over 70 years of manufacturing history. The CX45-U1-U3-XW is the higher-load capacity Xenio control with integrated WiFi - the correct choice for Harvia heaters from 8kW through 20kW in the Club, Spirit, Cilindro, Virta, and Virta Pro series. The built-in WiFi eliminates the need for a separate CX004WIFI add-on panel, providing the complete MyHarvia app experience in a single control unit purchase. Verify the required control for the specific heater model using the heater's installation manual before ordering. We are an authorized Harvia dealer.

  • Built-in WiFi - no separate CX004WIFI panel needed
  • Up to 17kW/1PH or 15kW/3PH - for larger Harvia heater series
  • Compatible: Club, Spirit 8kW, Cilindro 8-10.5kW, Virta 8-20kW, Virta Pro
  • Not compatible: Combi (CX30C required), KIP, The Wall, Vega
  • MyHarvia app - remote preheat, scheduling, FOTA - ETL Listed - 1-year warranty

Manuals and Documents

Installation and Operation Manual
Harvia-Xenio-Control-CX30-and-CX45-IOM.pdf

Warranty

1-year limited warranty

The Harvia Xenio CX45-U1-U3-XW is covered by a 1-year limited warranty from the date of purchase. The warranty covers defects in manufacturing and materials under normal use conditions. The warranty does not cover damage caused by improper installation, use with non-compatible heaters, or failure to follow the installation guidelines in the IOM. A licensed electrician is required for all electrical connections. Proof of purchase from an authorized Harvia dealer is required for warranty claims. We are an authorized Harvia dealer.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. Restock fees will be deducted in amounts ranging from 15% to 25% of the value of the item being returned. The minimum restock fee on lower-value orders will be $15.
To start a return, you can contact us at support@mediriser.com

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Requesting Your Partial Refund

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Email us at support@mediriser.com with links to the product on both our website and the other dealer's website where you found the price difference.

Ensure that you make this request within 14 days from the date of your order.

We will process the credit accordingly and ensure that you receive the best deal possible.

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While we are committed to providing competitive pricing, our Price Match Guarantee does come with certain limitations:

You must purchase the item from our website before requesting the Price Match Guarantee.

Promotions such as rebates, holiday sales, and "buy one, get one free" offers do not qualify.

The item must be in stock on the competitor's website and be sold as brand new.

The competitor must be an online store and may not have a physical retail location.

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The competitor must be an Authorized Retailer of the product.

Our Price Match Guarantee includes both the item price and shipping charges but excludes sales tax.

Contact Us for Price Match Inquiries at support@mediriser.com

If you have any questions or wish to confirm whether we can price match a product before making your purchase, please reach out to us. We are here to assist you in securing the best deals on the products you need. Your satisfaction and savings are our top priorities at Mediriser.

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