Helo Cup STJ Electric Sauna Heater

About this Sauna Heater

Please note: The 9kw Helo Cup STJ is only suitable for three-phase connection. 

The wall-mounted Cup electric sauna heater by Helo is a classic choice in the electric heater range. The enduring popularity is in the model’s timeless appearance, durability and ease of use. With the Cup sauna heater’s basic functions, it is an ideal choice for small and standard sized sauna rooms between 5m3-14m3, depending on the required power rating.  

Cup Electric sauna heater has a stone capacity of 23 kg that offers a soft and gentle steam. We recommend the smaller Vulcanite Sauna Stones (<10cm). The heater body is lightweight and easy to mount on the wall of the sauna. The Cup STJ model has integrated controls and a timer in a 9-hour pre-selection range.  

Cup (STJ) electric sauna heater come in the following styles:  

• Graphite black 

SUFFICIENT AMOUNT OF STONES TO BE PURCHASED SEPARATELY

Click on the technical specification tab above, to learn more about the heater's safety distances, dimensions and required amount of stones. 

Warranty

Please find the warranty card in the "Downloadable Files" tab.

About our Electric Sauna Heater Supplier Helo

Helo has brought health and wellbeing to people all over the world for over 100 years. Founded in 1919, it was the first manufacturer of electric sauna heaters. With innovative technology, smart functionality and stylish design, Helo sauna products upgrade the everyday sauna experience.

Helo electric sauna heaters are made of high-quality materials and handcrafted in Hanko, Finland. True to their Finnish origin, the company is creating opportunities for everyone to experience the Nordic sauna no matter where you are in the world.

Helo is a part of the global Sauna360 group, creating top quality sauna products to be a part of everyday healthy living. The incorporated brands of Sauna360 represent traditional Nordic sauna, steam and infrared wellness experiences for a modern lifestyle.

If you want to browse our wider selection of the Helo Electric Sauna Heater, click on the following link: Helo Electric Sauna Heater Collection

Click on the technical specification tab to learn more on how to connect your Helo electric sauna heater in the UK.

To learn more about installing electrical heaters on domestic power supplies, see our "How to choose the right sauna heater" page.

This heater must be installed by a qualified electrician. 4.5kW, 6kW and 8kW models can be easily installed on both single phase 240V and three phase 400V power supplies. The 9kW model must be installed on a three phase supply.

Christmas and New Year's Delivery Notice

Please note the following changes to our pallet shipping and DPD delivery service on parcel orders over the Christmas period.

Our warehouse is fully closed for operation over the following days: Wednesday 24 December, Thursday 25 December, Friday 26 December, Wednesday 31 December and Thursday 1 January.

Orders requiring a pallet

The last dispatch date for orders requiring a pallet is Friday 19th December 2025. Pallet orders dispatched on this day must be booked and signed for with one of our sales team representatives latest by close of business on Friday 19th December 2025.

Please note:

• Pallets dispatched on 19th December will be delivered on either 22nd or 23rd December, depending on your postcode
• We strongly advise against booking deliveries to the Highlands or Channel Islands close to the 19th December, as these may be held at the hub over the festive period
• There may be limited availability for pallet shipping on this day and we cannot guarantee that available slots remain

We will commence our regular pallet shipping service on Monday 5th January 2026.

If you have any questions about your pallet order, please get in touch with our Sales team: +44 (0) 20 8050 2895 or email info@finnmarksauna.com

Small Parcel Orders

DPD will deliver as normal up to and including Tuesday 23rd December 2025. Orders for next day delivery must be placed latest by 3pm.

Limited dispatch service: We will dispatch DPD orders on Monday 29th December and Tuesday 30th December only during the festive closure period.

We will commence our regular delivery service on Monday 5th January 2026.

*Estimated delivery times are applicable to the UK mainland only (excludes Highlands and Islands). Additional delays and charges will be required for Non-UK Mainland and Highlands and Islands deliveries.