Sauna Heaters Collection FAQs
Sauna heater size depends on the volume of your sauna room and the level of insulation. A general rule is 1 kW of power per 1.5 - 2m³ of space. The second consideration is insulation of the sauna. If you have uninsulated surfaces in your sauna such as glass windows, add an additional 1.5m³ for each square metre of other uninsulated surfaces. These adjustments account for heat loss through materials that are less efficient at retaining heat.
It’s better to choose a slightly oversized sauna heater than one that’s too small for the space. A larger heater can easily be adjusted to run at lower output when needed, but an undersized unit will constantly struggle to reach and maintain the right temperature. This not only reduces efficiency but can also make your sauna sessions less enjoyable due to slower heating times and inconsistent warmth.
When a heater is continuously operating at its maximum capacity, its components - especially the heating elements are placed under greater strain. Over time, this can accelerate wear and tear, leading to a shorter lifespan, potential breakdowns, and higher maintenance or replacement costs.
An underpowered heater can also affect the sauna’s overall performance. If the air doesn’t reach the proper temperature, the stones may not get hot enough to produce quality löyly (the soft, soothing steam created when water is poured over the stones). This diminishes the authentic sauna experience.
Use our Free Sauna Size Calculator to help you choose the right heater size for your sauna.
For your safety when using most sauna heaters, we recommend you either design a safety railing into the sauna or purchase and install a compatible safety railing.
This is important to consider particularly for smaller saunas, where the risk of contact with the heater is higher.
Embedding flanges also enhance the usability of the sauna.
General Store FAQs
If you have any questions please get in touch and we will give you friendly expert advice.
