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SKU: HVE454XEMWIFI

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Manufacturer's Warranty Included

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Two year warranty

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£999.00
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2-Year Warranty

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  • package overview

Harvia Moderna is the royalty of electric sauna heaters. Moderna will heat up your sauna quickly – and thanks to the digital control, to the exact temperature you want, to the accuracy of a single degree. A separate electronic sensor maintains a steady temperature for as long as you need. 

 

Moderna’s digital Xenio XE control panel makes it extremely easy to use. All the functions are integrated directly to the Moderna heater, enabling easy installation whether you are building a new sauna or putting in a new heater in your old sauna. The buttons on the Xenio control panel are illuminated for ease of use in dimly lit saunas. Use the control panel to adjust the temperature, lighting and timers. With the timer, you can have the sauna ready whenever it suits you. 

 

The control panel can be placed inside the sauna, doubling as a digital thermometer. The XE model can be started remotely, and the safety equipment can be integrated directly into the heater.

 

Digital Design Sauna Heater

  • The stylish Moderna XE with digital control, mounted on the wall, will heat up your sauna quickly.
  • The Moderna XE electric sauna heater a range of features and it is easy to install in a new or old sauna. It does not require a separate control unit installed in a dry room. All connections, such as the control panel, door sensor and temperature sensor and connected directly to the heater.
  • The Xenio control panel is equipped with illuminated touch keys and a digital display.
  • Use the Xenio XE control panel to switch on the heater at any time to reach the desired temperature, to adjust the lighting and to monitor the temperature.
  • The Moderna XE model is easy to update to be compatible with MyHarvia with the Xenio WiFi accessory, enabling you to control your sauna functions with your phone. Learn my about the MyHarvia application at www.myharvia.com.
  • The safety equipment, such as door sensor and safety switch, which are required for remote use at home, can be connected directly into the heater. In remote use, the door sensor function can be activated directly from the Xenio control panel.
  • Thanks to its digital control and short safety distances, the Moderna electric sauna heater is particularly suitable for embedding into the benches.

 

The modern and stylish Harvia Xenio WiFi is a sauna control panel with illuminated buttons and door sensor that can be operated remotely with a mobile device. The control panel can be connected to a wireless LAN. The MyHarvia mobile application enables the remote control of functions on the control panel, such as temperature and humidity control, lighting and air ventilation, temperature calibration, memory function in case of power outages, timed starting and use of the week timer. The features vary depending on the devices attached to the system. 

 

Harvia Xenio WiFi enables a variety of installation options, and can also be installed afterwards. We recommend that you place the control panel near the sauna door as a surface installation or embedded into the wall. Your sauna experience is made more relaxed and safe by the control panel’s inbuilt remote starting security function which recognizes, for example if the sauna door has been left open or someone is inside the sauna once the safe status has been activated. 

 

The control panel enables easy and clear sauna control. You can start and adjust the temperature with the control panel buttons. The illuminated buttons on the display make it easy to use even in poor light. 

 

Follow your sauna’s status with the MyHarvia mobile application or on the control panel’s digital display. The door sensor of the sauna’s remote starting status can be activated straight from the control panel.

Delivery & Installation

Delivery

We offer Free UK delivery on all our products. This includes delivery costs as well as customs and import taxes. We estimate delivery times to be 6-8 working days after manufacuring has completed as all saunas are made to order. In stock heaters will take 6-8 working days.

 

Installation

We advise you to have a qualified electrician install your heater to avoid potential injury and/ or damages.

Returns & Refunds

At SaunaSupply, we offer a 30-day return window. This means you may request a return within 30 days of receiving your item. Please note that certain products are exempt from no-fault returns; any such exceptions will be clearly noted on the respective product pages.


All SaunaSupply saunas are custom-built to order, individually manufactured according to each buyer’s confirmed design, dimensions, and finish.
Because these products are bespoke and cannot be resold, returns or cancellations are not accepted once fabrication has begun, except where a genuine manufacturing defect makes the sauna unusable.

 

To find out more information, please visit our Returns & Refunds page by clicking here.

Warranty

At SaunaSupply, we stand behind the quality of our products. That’s why we offer a 2-year warranty on all SaunaSupply saunas. Full warranty details can be found in the product manuals, but the key terms are outlined below:

 

What the Warranty Covers

All saunas are covered by a 24-month manufacturer’s warranty against defects in materials or workmanship.
If a problem occurs, SaunaSupply will always attempt to repair and/ or replace parts under this warranty first. A refund will be considered only if repair or replacement is not possible within a reasonable time or causes undue inconvenience, in accordance with the Consumer Rights Act 2015.

 

Conditions and Exclusions

The warranty is void if the sauna is not assembled by a qualified professional.

 

Different warranty periods may apply to saunas mounted on trailers and products used in commercial settings.

 

The warranty does not cover natural characteristics of wood, such as:

- Discolouration

- Cracking

- Dimensional changes caused by fluctuating or high humidity.

- Normal wear and tear from regular use is not covered.

- Improper installation, misuse, or user-caused damage are excluded from coverage.

- Weather-related damage, including lightning or storm damage, is not covered.

- Installation errors by the customer will invalidate the warranty.

- Any unauthorised repairs or modifications will void the warranty.

- Incorrect storage or exposure to unsuitable environmental conditions will also void the warranty.

 

Making a Warranty Claim

To activate warranty support, any faults or defects must be reported within 48 hours of discovery.

Please contact us at info@saunasupply.co.uk for all warranty-related queries or to submit a claim.

Electrical Supply

The electrical supply you need depends on the kW rating of your sauna heater. We strongly recommend speaking with a qualified electrician before starting any installation.

Most home saunas in the UK use a dedicated power supply, similar to what’s used for an electric shower or cooker. Domestic sauna heaters typically run on a single-phase 230V supply.

To work out the electrical current (Amps), use this formula:

Watts ÷ Volts = Amps

Example:
6kW (6000W) ÷ 230V = approximately 26 Amps


Typical Guide for Domestic Sauna Heaters

Heater Power Current Draw Suggested Cable Size (Single-Phase)
2.3 kW10 Amps1.5 mm²
3.0 kW13 Amps2.5 mm²
3.6 kW15 Amps2.5 mm²
4.5 kW19 Amps2.5–4.0 mm²
6.0 kW26 Amps4.0 mm²
8.0 kW35 Amps6.0 mm²
9.0 kW40 Amps6.0 mm² (or larger, depending on distance)

Important Notes

  • Cable size depends on cable length, installation method, and other on-site factors.
  • Always follow the advice of a qualified electrician.
  • All installations must comply with current UK wiring standards (BS 7671).

Sauna Health Benefits

Experience restorative and regenerative wellness benefits

- available now from SaunaSupply

Weight loss & metabolism

Heart health

Stress & fatigue reduction

Muscle aches & joint pain

Detoxification

Skin conidtion

Immunity system support

Skin health & cellulite

Need help? 
Contact our team today.

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If you need immediate help, please use our live chat option in the bottom right corner and a member of our team will be glad to help or call us.

Q. Can I assemble the sauna myself?

Technically, yes — you can assemble the sauna yourself. However, we strongly recommend having a qualified carpenter or joiner assist you, especially if you don’t have prior experience with woodwork or construction.

 

The assembly manual is comprehensive and user-friendly for those familiar with building, but without that background, the process can be challenging and time-consuming. Most customers choose professional installation for peace of mind and to ensure the sauna is assembled correctly.

 

Important: Incorrect assembly or not following the manual may void your warranty. If you’re unsure, we recommend professional installation.

Q. What type of base do I need?

Your sauna base must meet two key requirements:

 

It must be completely level.

It must support the full weight of the sauna and users.

 

Most saunas bases must be able to withstand twice the weight og the sauna itself. For example, when laying a base for saunas weighing above 400 kg, plan for an additional 400 kg for occupants — a total of around 1,000 kg+. Suitable base materials include concrete, patio decking, tiles, or asphalt — as long as the surface is flat and stable.

 

Check out our guide on different sauna bases here and we strongly advise you to hire a professional.

 

Avoid installing the sauna on a slope or in an area prone to water pooling.

Q. What maintenance is required after assembly?

After assembly, the sauna should be treated both inside and out as soon as possible. This protects the wood and is required to validate your warranty.

 

Painting the sauna bench is optional but recommended. Use a breathable, oil-based treatment such as Tikkurila Supi Sauna Finish.


If Tikkurila products are unavailable, Osmo Oil is an excellent alternative. Both can be ordered from B&Q.

Q. What are the running costs?

A traditional home sauna usually uses a 3 to 9 kW electric heater and costs around £0.10 to £0.30 per kWh in the UK. This means running costs range from about £0.30 per hour for a 3 kW heater to £0.90 per hour for a 9 kW heater. Preheating typically takes 30 to 45 minutes, which adds to the overall cost depending on how often and how long the sauna is used.

 

Infrared saunas are highly energy-efficient. On average, running a SaunaSupply sauna costs between £0.08 to £0.40 per hour, depending on the model size, local electricity rates, and how often it's used. For example, a standard 2-person sauna using a 1.5–2.0 kW heater may cost around £2 to £4 per month if used 3–4 times per week. This makes it a very economical option for regular at-home wellness.

Q. What maintenance is required if I buy a pre-assembled sauna?

None. Pre-assembled saunas are fully treated at the factory before shipping.

Q. Can I paint the sauna a different colour?

Yes. You can paint your sauna any colour, as long as you use a breathable wood treatment.

Q. Do I need a three-phase power supply?

No, a three-phase supply is not required.


However, a qualified electrician must connect your heater to your power supply, and an isolator switch is required at minimum.

Discover Our Range

All our saunas are handcrafted in Estonia so you'll receive the best craftsmanship possible. Enjoy home wellness today.

Electric Sauna Heater Harvia Moderna V45XE 4,5 kW Black - With Controls + WiFi Remote

£999.00