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Frequently asked questions

Why do the digital display and thermometer show different readings?

Go by the digital readings on the controller or the interior display. The readings on the thermometer are analogue and therefore less accurate. For safety reasons, the temperature sensor is safeguarded against overheating and fitted on the cabin ceiling above the heater, which is usually the hottest place. This can lead to variations in temperature ranging from max. 10 to 15°C between the sensor and the cabin thermometer. The reading on the interior display and the digital readings on the controller are decisive for the cabin climate.

What safety measures are in place for pre- and remote selection?

Today’s saunas are high-tech. Since pre- and remote selection also come with certain risks, fire protection is extremely important. At Küng, all programmable sauna models feature a barely visible, smart magnetic door contact sensor as standard, which prevents the sauna programmes from starting unless the doors are closed. As soon as the sauna doors are opened, the programme will automatically deactivate. This prevents anyone from unintentionally leaving any objects that could potentially cause a fire in the sauna in the time between selecting the programme and the time it is set to start. Instantly deactivating the programme during the preheating phase prevents the worst from happening – giving you, the sauna owner, peace of mind in your absence.

Why is resin seeping out of the wood?

It can happen that resin seeps out of certain types of resinous wood at high temperatures. This can easily be scraped off once cooled. However, this will also remove the beneficial aroma of the resin. Note: a high amount of resin is often a strong indicator that the sauna is overheating.

What should I be aware of on using the sauna for the first time?

Before using for the first time, we recommend preheating the sauna to 70°C for around two hours. Temperatures above 80°C should initially be avoided.

Does the water container have to be full at all times?

The water container must be filled before taking a sauna. The sauna programme should only be started once the water container has been filled with warm water and placed on the hotplate. Ideally, it should be filled approx. 2/3 full. Too little or no water will cause the system’s dry-run protection to initiate. Once cool, we recommend emptying and cleaning the water container.

What is the average cost of running a sauna?

Naturally, that depends to a great extent on the size and design of the sauna. With an average output of 9 kW, the cost of a three-hour session in the sauna would be just under four euros (CHF 4.00).

Do I really need a heater guard?

A heater guard serves only to protect sauna bathers. Whether it is necessary depends on where the heater is placed, the sauna cabin conditions and who is using the sauna. If children are using the sauna, for example, we strictly advise you to purchase a heater guard.

How often should I change the stones?

This primarily depends on how often you use the sauna. The pouring of water on the sauna stones causes them to reach high temperatures before cooling down. This subjects them to a great deal of wear and tear (which may even cause them to crack). Unsightly residual lime and additives from sauna oils can also accumulate on the stones. It is therefore necessary to check the sauna stones regularly and replace them, if necessary.

What is the correct way to arrange the sauna stones?

Peridotite stones have an outstanding ability to store heat and are excellent heat conductors. To make sure this remains the case for as long as possible, the stones must be arranged loosely in the basket to ensure good air circulation. Insufficient air circulation will cause the temperature of the heating elements to drastically increase. This will increase energy consumption, due to prolonged preheating, and shorten the lifespan of the heating elements.

How long prior to taking a sauna should I switch on the sauna?

The heat radiated in a sauna doesn’t just come from the heater itself, but also from all wooden parts, i.e. the walls, benches and ceiling. The sauna cabin must therefore be preheated sufficiently to allow the wood to heat up, too – which takes longer to heat up than the surrounding air. Taking a sauna before the wood has adapted to the surrounding temperature and is radiating heat prevents the heat from being evenly dispersed over the body, thus reducing the full effects of the sauna. It takes between 25 and 60 minutes to preheat the sauna (depending on the selected programme and room conditions).