The main difference between the two types is the way your body is heated. In the case of a Finnish sauna, the heat from the sauna furnaces spreads through moisture and air. The air heated in this way then spreads throughout the sauna and subsequently heats your skin. In the infrared sauna, the principle is different. Infrared radiation, which is produced by infrared emitters in the sauna, is used here. In this case, the surrounding air heats up much less and therefore your body heats up much more deeply when it comes into contact with this infrared radiation.
Another big difference is the temperature to which both types of saunas will raise the ambient air. In the case of a Finnish sauna, these values are around 100 ° C. This is mainly because the air is heated to a sufficient temperature and can effectively heat your skin. In the case of an infrared sauna, we are talking about a range between 30 - 60 ° C. This is the result of minimal heating of the air by infrared radiation. For this reason, this radiation also has a greater efficiency in heating your body. Due to the lower air temperatures in the infrared sauna, this type is suitable for people with cardiovascular problems or simply for those who have trouble breathing in a classic Finnish sauna.
While the classic Finnish sauna of course only works in a closed space specially prepared for this purpose, this does not have to be the case with the infrared sauna. If you do not close the space in a classic sauna, you will miss a lot of warm air, which is, however, absolutely essential for the proper functioning of a Finnish sauna, because the heat spreads through the air. However, with an infrared sauna, you can only ensure that your muscles are overheated and you will not sweat. Just ventilate the infrared sauna. The surrounding air will be completely normal, but your muscles will constantly overheat. So if you don't want to sweat, but just warm up your muscles, you can achieve that with an infrared sauna.
Thanks to the infrared emitters, the infrared sauna preheats to the operating temperature much faster than the classic sauna. For an infrared sauna, it takes approximately 5-10 minutes, for a Finnish sauna, it takes around an hour. Also, in terms of operating costs, the infrared sauna is better.