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The Harvia Xenio LTY45 U1 U3 Power Extension Unit expands the output capacity of your Harvia control system so you can run larger or multiple electric sauna heaters from a single controller. Built in stainless steel for demanding use, it is ideal for commercial facilities or spacious custom saunas that require more than one heater or higher total kilowatt capacity.
| Model | LTY45 U1 U3 |
| Product type | Power extension unit for electric sauna heaters |
| Compatible controls | Harvia Xenio CX30 U1 U3, CX45 U1 U3, CX170 |
| Maximum total heater load | Up to 38 kW depending on control unit configuration |
| Supply voltage | 240 V |
| Phase | Single phase |
| Enclosure material | Stainless steel |
| Mounting | Wall mount |
| Dimensions | 14.3 in W x 2.9 in D x 10.5 in H |
| Weight | 6.1 lb |
| Location | Indoor dry equipment area |
The LTY45 U1 U3 is intended for larger electric saunas that use Harvia Xenio CX30, CX45, or CX170 controls and need additional heater capacity. Typical applications include Virta and Virta Pro heaters installed in large residential, commercial, or multi room facilities.
Mount the enclosure on a solid wall near the main control power unit and route heater circuits according to the Harvia wiring diagrams. All connections must follow local electrical code. Installation, wiring, and commissioning should be performed only by a qualified licensed electrician.
Use the product only with compatible sauna equipment and follow its manufacturer instructions. Keep accessories away from heating elements unless the manual explicitly allows direct heater placement. Allow hot items to cool before handling and keep them out of children's reach.










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Discover premium Harvia sauna heaters, controls, and accessories, backed by personalized product guidance, reliable delivery communication, and dedicated support from Sauna Luxuries.
Harvia heaters and accessories ship using the appropriate delivery method. Receive tracking information once available, with our team ready to assist.
With over 75 years of Finnish sauna expertise, Harvia combines trusted craftsmanship, innovative technology, and timeless design for an authentic sauna experience.
Get personalized assistance with Harvia heater sizing, controller compatibility, and installation requirements to confidently choose the right setup for your sauna.
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