The IKI heaters designed for communal use saunas are developed to withstand continuous heating and extensive use. All parts of the IKI heaters are made from stainless steel, which make them ideal for use in communal saunas in apartment buildings, spas and other shared saunas. Heaters made for commercial use have resistors made from an especially durable AISI 309 stainless steel.

A study carried out by the Lappeenranta University of Technology has determined that IKI heaters in commercial use preserve energy. Because the large mass of stones preserves heat effectively, electricity can be switched off periodically, while the heater continues to heat the sauna room and give out steam. This means less is used than with heaters that have a smaller stone capacity. IKI can be made to order, which means it can fit any space of any size.

The heater comes with a separate control panel.