Helo
Helo Cup STJ Electric Sauna Heater
Helo Cup STJ Electric Sauna Heater
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Description
Description
The Cup STJ by Helo is the classic of the electric heater range: a wall-mounted heater whose enduring popularity rests on timeless looks, durability and simple controls. Integrated dials give you a thermostat and a 9-hour pre-selection timer, and the 23 kg stone capacity of the larger models delivers a soft, gentle steam. Three outputs are available in graphite black: 4.5 kW for saunas of 3 to 6 m³, 6 kW for 5 to 9 m³ and 8 kW for 8 to 13 m³, each suitable for single-phase or three-phase supplies. Sauna stones are sold separately; we recommend smaller Vulcanite stones under 10 cm. Handcrafted in Hanko, Finland by Helo, the first maker of electric sauna heaters.
Features
Technical Specification
| Model data (from the Helo installation manual, Table 1) | |
| Colour | Graphite black |
| Mounting | Wall-mounted |
| Controls | Integrated thermostat and 9-hour pre-selection timer |
| Sauna volume, 4.5 kW | 3 to 6 m³ |
| Sauna volume, 6 kW | 5 to 9 m³ |
| Sauna volume, 8 kW | 8 to 13 m³ |
| Dimensions (W × H × D), 6 kW | 410 × 580 × 280 mm |
| Dimensions (W × H × D), 8 kW | 410 × 580 × 300 mm |
| Weight without stones (6 / 8 kW) | 12.5 kg |
| Stone capacity, 4.5 kW | Approx. 15 kg |
| Stone capacity, 6 kW and 8 kW | Approx. 23 kg |
| Recommended stones | Vulcanite, smaller than 10 cm (sold separately) |
| Minimum sauna ceiling height | 1900 mm |
| Safety clearances (minimums to combustible materials) | |
| Side wall, 4.5 / 6 / 8 kW | 50 / 70 / 100 mm |
| In front, 4.5 / 6 / 8 kW | 80 / 100 / 150 mm |
| To ceiling, 4.5 / 6 / 8 kW | 1200 / 1250 / 1250 mm |
| To floor (all models) | 120 mm |
| Electrical | |
| Supply | Single-phase 240 V or three-phase 400 V |
| Installation | Must be installed by a qualified electrician |
| Fuse and cable sizing | See Table 2 of the installation manual in Downloads |
Installation
The mounting base must be reinforced with timber behind the sauna panel; thin panel alone is not suitable. The minimum clearances above apply even where wall materials are incombustible. The full installation manual, user guide and warranty card are in the Downloads section on this page.
Sizing
Uninsulated or masonry surfaces extend preheating: each square metre of plastered ceiling or wall adds 1.2 m³ to the effective sauna volume. To learn more about choosing outputs and connecting a heater on a UK domestic supply, see our guide at How to choose the right sauna heater.
Brand
Helo, founded in 1919, was the first manufacturer of electric sauna heaters. Its heaters are made of high-quality materials, handcrafted in Hanko, Finland, and Helo is part of the global Sauna360 group.
Warranty & Ordering
The warranty card is in the Downloads section. A 9 kW Cup STJ for three-phase supplies only is listed separately. If you are unsure which output suits your sauna, contact support@finnmarksauna.com before ordering.
Downloads
Delivery & Returns
Delivery
We offer fast and reliable delivery to customers across the UK and beyond. For full details on shipping times and costs, please review our delivery policy.
Returns
We offer hassle-free returns within 30 days of purchase, so you can shop with complete confidence. For details, see our returns policy.
Warranty & Quality Promise
We are committed to delivering products of the highest quality, for details surrounding warranty please contact us.
Description
The Cup STJ by Helo is the classic of the electric heater range: a wall-mounted heater whose enduring popularity rests on timeless looks, durability and simple controls. Integrated dials give you a thermostat and a 9-hour pre-selection timer, and the 23 kg stone capacity of the larger models delivers a soft, gentle steam. Three outputs are available in graphite black: 4.5 kW for saunas of 3 to 6 m³, 6 kW for 5 to 9 m³ and 8 kW for 8 to 13 m³, each suitable for single-phase or three-phase supplies. Sauna stones are sold separately; we recommend smaller Vulcanite stones under 10 cm. Handcrafted in Hanko, Finland by Helo, the first maker of electric sauna heaters.
Features
| Model data (from the Helo installation manual, Table 1) | |
| Colour | Graphite black |
| Mounting | Wall-mounted |
| Controls | Integrated thermostat and 9-hour pre-selection timer |
| Sauna volume, 4.5 kW | 3 to 6 m³ |
| Sauna volume, 6 kW | 5 to 9 m³ |
| Sauna volume, 8 kW | 8 to 13 m³ |
| Dimensions (W × H × D), 6 kW | 410 × 580 × 280 mm |
| Dimensions (W × H × D), 8 kW | 410 × 580 × 300 mm |
| Weight without stones (6 / 8 kW) | 12.5 kg |
| Stone capacity, 4.5 kW | Approx. 15 kg |
| Stone capacity, 6 kW and 8 kW | Approx. 23 kg |
| Recommended stones | Vulcanite, smaller than 10 cm (sold separately) |
| Minimum sauna ceiling height | 1900 mm |
| Safety clearances (minimums to combustible materials) | |
| Side wall, 4.5 / 6 / 8 kW | 50 / 70 / 100 mm |
| In front, 4.5 / 6 / 8 kW | 80 / 100 / 150 mm |
| To ceiling, 4.5 / 6 / 8 kW | 1200 / 1250 / 1250 mm |
| To floor (all models) | 120 mm |
| Electrical | |
| Supply | Single-phase 240 V or three-phase 400 V |
| Installation | Must be installed by a qualified electrician |
| Fuse and cable sizing | See Table 2 of the installation manual in Downloads |
Installation
The mounting base must be reinforced with timber behind the sauna panel; thin panel alone is not suitable. The minimum clearances above apply even where wall materials are incombustible. The full installation manual, user guide and warranty card are in the Downloads section on this page.
Sizing
Uninsulated or masonry surfaces extend preheating: each square metre of plastered ceiling or wall adds 1.2 m³ to the effective sauna volume. To learn more about choosing outputs and connecting a heater on a UK domestic supply, see our guide at How to choose the right sauna heater.
Brand
Helo, founded in 1919, was the first manufacturer of electric sauna heaters. Its heaters are made of high-quality materials, handcrafted in Hanko, Finland, and Helo is part of the global Sauna360 group.
Warranty & Ordering
The warranty card is in the Downloads section. A 9 kW Cup STJ for three-phase supplies only is listed separately. If you are unsure which output suits your sauna, contact support@finnmarksauna.com before ordering.
Delivery
We offer fast and reliable delivery to customers across the UK and beyond. For full details on shipping times and costs, please review our delivery policy.
Returns
We offer hassle-free returns within 30 days of purchase, so you can shop with complete confidence. For details, see our returns policy.
Warranty & Quality Promise
We are committed to delivering products of the highest quality, for details surrounding warranty please contact us.
