Savne Štrus Air Premium Indoor Sauna Espe STS4 15x120mm

1. minimum distances for ventilationThe following guide values apply for sufficient ventilation and to avoid moisture damage:

• to interior walls: approx. 5-10 cm
• to exterior walls: min. 10 cm
• to the ceiling: min. 10 cm

Some insulated premium systems manage with smaller distances.

2. space for use and maintenance

• in front of the sauna door: approx. 60 cm free space
• Control and maintenance points must remain accessible

3. space requirement in the interior

• approx. 1-1.5 m² per person
• 2 Persons: approx. 2-3 m²
• 4 Persons: approx. 4-6 m²

An inside length of approx. 200 cm is recommended for loungers.

4. room height & floor

• recommended room height: at least 10 to 15 cm higher than the sauna height
• Floor: flat and waterproof (e.g. tiles, stone)

Dry indoor spaces such as cellars, bathrooms, living rooms or attics are suitable. The decisive factors are adequate ventilation, compliance with wall clearances and a suitable power connection. A window is not required.

Yes, many Indoor Saunas can be dismantled and are suitable for rental apartments. The prerequisites are suitable power connections, adequate spacing and ventilation. The consent of the landlord is recommended.

Power connection

• Sauna heaters over 3 kW require a 400 V power supply
• Connection exclusively by an authorized specialist company

Rule of thumb oven performance

• approx. 1 kW per 1 m³ sauna volume
• additional approx. +1 kW per m² glass surface
• for solid wood saunas approx. +10-15 %

With correct ventilation, sufficient wall spacing and regular airing after the sauna, no harmful moisture is produced. With proper planning, Indoor Saunas are not considered critical for living spaces.

Indoor Saunas work almost silently. The heater itself is silent, only the control unit or fan in bio/combi heaters are slightly audible. The volume is suitable for living rooms.

• Heating time: approx. 30-45 minutes, for complete warming approx. 45-60 minutes
• Power consumption: approx. 6-9 kWh per sauna session

The actual costs depend on the heater performance, insulation and service life.

• Finnish sauna: approx. 80-100 °C, dry heat
• Bio-Sauna: approx. 50-60 °C, higher humidity
• Combination sauna: flexible between dry & wet
• Infrared: mild deep heat

Combination saunas are considered to be particularly versatile and beginner-friendly.

Typical causes are

• Oven output too low
• Dirty or saturated sauna stones
• Insufficient ventilation
• Technical defects (e.g. heating elements)

Many problems can be solved without replacing the heater.

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.

We accept the following payment methods:

• PayPal
• Store Pay
• Visa
• Mastercard
• American Express
• Maestro
• UnionPay
• Apple Pay
• Google Pay
• USDC
• Bancontact
• EPS
• iDEAL
• Klarna

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.

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.

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.

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.

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

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.

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.