Some sauna heaters are defined by technology, others by tradition—the Helo CUP STJ electric wall-mounted heater with integrated controls combines both with uncompromising simplicity. Valued for years for its reliability, it transforms even small sauna rooms into spaces of concentrated heat. A heater that doesn’t promise more than it delivers—and that’s exactly why it’s so impressive.
What Makes the Helo CUP STJ Electric Wall-Mounted Heater with Integrated Controls a Classic
The Helo CUP STJ electric wall-mounted heater with integrated controls—4.5 / 6 / 8 / 9 kW—is one of the most popular electric sauna heaters in our Finnish product line. It owes its popularity to its robust construction, straightforward operation, and consistently functional design. The STJ models operate completely independently: a thermostat and mechanical timer are built directly into the unit, eliminating the need for an external control unit. Available in four power settings, it accommodates sauna rooms ranging from 3 to 14 m³, making it suitable for private cabins as well as medium-sized sauna areas.
Graphite-inspired aesthetics and robust construction of the Helo CUP STJ electric wall-mounted heater
The sturdy metal housing of the Helo CUP STJ electric wall-mounted heater with integrated controls—4.5 / 6 / 8 / 9 kW—features a subtle graphite finish that blends discreetly into a variety of sauna interiors. The deliberately minimalist design complements the room’s architecture rather than drawing attention to itself. Designed to withstand continuous thermal stress, the construction ensures a long service life even with intensive use. The compact wall-mounted design emphasizes its space-saving nature and keeps the sauna floor completely clear.
Integrated controls and a wide range of features in Helo CUP STJ electric wall-mounted heater
Four power settings—4.5, 6.0, 8.0, and 9.0 kW—make the Helo CUP STJ electric wall-mounted heater with integrated control system versatile enough for saunas ranging from 3 to 14 m³. The integrated STJ control system combines a thermostat with a mechanical timer that allows for up to 9 hours of preset time and a heating duration of 0 to 3 hours. This system enables precise temperature control and delayed preheating without additional electronics. Depending on the power setting, the heater holds 15 to 23 kg of vulcanite sauna stones, which ensure a gentle, even steam environment. All models are CE-certified and manufactured in Finland.
Space-saving installation and intuitive operation with the Helo CUP STJ electric wall-mounted heater
Thanks to its wall-mounted design, the Helo CUP STJ electric wall-mounted heater with integrated controls—4.5 / 6 / 8 / 9 kW—takes up no floor space and is ideal for small to medium-sized cabins. Its lightweight construction—between 10.5 and 12.5 kg depending on the model—makes installation much easier. The unit is operated directly via a thermostat and timer built into the device, without the need for external control panels. This makes your sauna session hassle-free: set the start time, select the temperature, and enjoy the moment.
A consistent sauna environment and long-lasting effects thanks to the Helo CUP STJ electric wall-mounted heater
The Helo CUP STJ electric wall-mounted sauna heater with integrated controls—4.5 / 6 / 8 / 9 kW—creates a classic, dry sauna atmosphere with stable temperature control. The combination of direct radiant heat and up to 23 kg of high-quality volcanic stones promotes gentle, pleasant steam with every infusion. Regular sauna sessions improve blood circulation, relieve muscle tension, and enhance overall well-being. Durable technology rooted in Finnish sauna tradition forms the foundation for reliable wellness experiences in the comfort of your own home.
Special features
Click or tap on the icons to learn more.
Wall oven – Space-saving & classic
Compact Installation with traditional heat distribution.
Wall-mounted heaters are designed to save space and can be installed directly on the sauna wall. This type of installation creates more interior space, promotes even air convection, and preserves the classic sauna heat in its original form.
High-quality sauna stones included
Optimal heat storage for classic sauna enjoyment
All models come with carefully selected sauna stones that store heat and release it evenly. The stones support rich, gentle heat development and ensure long-lasting infusion comfort—for an intense, traditional sauna experience.
Robust construction & durable materials
Quality for long-lasting use.
Sauna heaters made from high-quality materials are designed for high temperatures and regular use. Their solid construction ensures safety, reliability, and a long service life—even with intensive use.
Reliable temperature stability
Constant sauna climate for maximum comfort.
A high-quality Sauna Heater ensures a consistent temperature throughout the entire sauna session. The stable heat generation creates a pleasant, controlled sauna climate and increases comfort with every use.
Integrated control system
Direct operation on Sauna Heater.
The integrated control system allows for simple and intuitive operation directly on Sauna Heater. Temperature and running time can be easily adjusted without additional controls. Ideal for anyone who prefers a compact solution with clear functionality.
Scope of delivery
Everything at a glance – this is what's included!
Helo CUP STJ Electric Wall-Mounted Heater (Graphite) at the selected power setting
Integrated control system (thermostat + mechanical timer)
Pre-loaded sauna stones (15 kg for 4.5 kW / 23 kg for 6.0, 8.0, and 9.0 kW)
Installation Materials
Installation and Operating Instructions
Specifications
Model
Helo CUP STJ Graphite
Product Type
Electric Sauna Heater (Wall-Mounted)
Heating System
Electric
Performance Levels
4.5 / 6.0 / 8.0 / 9.0 kW
Total sauna volume
3–14 m³
Color
Graphite
Control System
Integrated (STJ) – Thermostat + Mechanical Timer
Timer preset range
Up to 9 hours
Heating Duration
0–3 hours
Installation
Wall-mounted
Certification
CE
Country of Manufacture
Finland
CUP 45 STJ – 4.5 kW
Sauna Size
3–6 m³
Dimensions (W × H × D)
410 × 580 × 280 mm
Weight
10.5 kg
Amount of stone
15 kg
Rear Safety Distance
0 mm
Safety margin at the top
1200 mm
Safety clearance on the side
50 mm
Front safety clearance
80 mm
CUP 60 STJ – 6.0 kW
Sauna Size
5–9 m³
Dimensions (W × H × D)
410 × 580 × 280 mm
Weight
11.5 kg
Amount of stone
23 kg
Rear Safety Distance
0 mm
Safety margin at the top
1250 mm
Safety clearance on the side
70 mm
Front safety clearance
100 mm
CUP 80 STJ – 8.0 kW
Sauna Size
8–13 m³
Dimensions (W × H × D)
410 × 580 × 300 mm
Weight
12.0 kg
Amount of stone
23 kg
Rear Safety Distance
0 mm
Safety margin at the top
1250 mm
Safety clearance on the side
100 mm
Front safety clearance
150 mm
CUP 90 STJ – 9.0 kW
Sauna Size
9–14 m³
Dimensions (W × H × D)
410 × 580 × 300 mm
Weight
12.5 kg
Amount of stone
23 kg
Rear Safety Distance
0 mm
Safety margin at the top
1250 mm
Safety clearance on the side
100 mm
Front safety clearance
200 mm
Get the Helo CUP STJ Electric Wall-Mounted Heater for Your Sauna Now
Choose the Helo CUP STJ electric wall-mounted heater with integrated controls in the power level that suits your needs and bring Finnish sauna warmth into your space—compact, reliable, and ready to use right away.
Questions & Answers (FAQs)
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What should I look out for before ordering?
Please check all relevant information about the product (dimensions, technical requirements, power/water connections, space requirements, delivery conditions) before ordering. If you have any questions, we recommend a consultation before purchasing, especially for larger wellness products.
Which payment methods are accepted?
We accept the following payment methods:
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When is the load applied?
The amount is debited at the time the order is completed or according to the selected payment method. For payment services such as Klarna, the respective payment terms of the provider also apply.
Can I change or cancel my order at a later date?
Changes or cancelations are possible as long as the order is not yet in production, commissioning or shipping. Please contact us immediately after placing your order.
Are there any restrictions on the right of withdrawal?
Yes, custom-made products, special designs and individually configured goods are excluded from the statutory right of withdrawal. We will clarify transparently whether a product falls under this before or at the latest when the order is placed.
How long does the delivery take and will I be informed?
The delivery time is indicated directly with the respective product. These are valid as long as the item is in stock. Deviating, individually agreed delivery times have priority. We will actively inform you in the event of delays. You will receive ongoing information on the shipping status.
How does delivery by forwarding agent work?
Delivery is standard free curbside. This means that the goods are delivered to the nearest point that can be reached by truck.
Important:
Access for trucks must be possible
Sufficient clearance width and height required
The customer is responsible for transportation from the curb
If required, additional services (e.g. delivery to the installation site) can be arranged in advance
Can I set a preferred delivery date?
Delivery date requests will be considered if possible. The shipping company will usually contact you one to two days before delivery to arrange an appointment. Fixed dates or times cannot be guaranteed. Express deliveries with exact delivery dates are possible on request.
What applies in the event of damage, missing parts or subsequent defects?
Please check the goods immediately upon delivery. Transport damage or missing parts must be documented and reported immediately with photos/videos.
The statutory warranty of 2 years applies to defects. We examine every case and take care of repair, replacement or an appropriate solution.
