Important notes to get you started

Colder air mass will always try to move downwards. So, room temperature air in the sauna will sink down to the floor level unless it can be circulated properly.

To achieve the “natural draw effect” and to pull fresh air through the sauna room, here is how you should position your vents:

• In-vent: place directly under the heater so that the heat of the rocks, accompanied by Finnleo’s open air heater design, can properly pull new air into the sauna room.
• Exhaust vent: place opposite your heater in-vent (as closely as possible, ideally 2′ above the floor) to maximize air exchange and optimize the level of the out-vent. 

The goal is to avoid heat loss, while still keeping it high enough to achieve adequate air exchange.

Good heater stones for an electrical heater must exhibit the following characteristics:

• Able to withstand high temperatures and significant heat fluctuations.
• Do NOT create dust or discharge any odors.
• Sufficiently deliver heat, grab water, and prevent excess dripping of water. (In other words, an uneven surface is preferable to an even one.)
• Large enough so that the air can circulate well between the stones so that the elements operate efficiently.
• Hold heat well. Once the room reaches temperature, a rock that holds the heat well will use less energy to stay hot, yet produce wonderful steam.

All sauna heater stones should be recommended and tested by the heater manufacturer. The Finnleo Vulkanite stones are fully tested heater stones that contain no harmful VOCs (volatile organic compounds).