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Planning a DIY sauna or researching how to build one? Our FAQ section answers the most common questions about sauna heaters, materials, ventilation, doors, accessories, and installation. Whether you're a homeowner, contractor, or sauna enthusiast, these quick guides will help you understand the key components needed to build a safe and high-performing sauna.
Wellendi supplies the essential products used in modern sauna construction—from heaters and stones to building components and accessories—making it easier to create your own sauna experience.
1. What size heater do I need for my sauna?
Sauna heaters are sized based on the volume of the sauna room. As a general guideline, you need about 1 kW of heater power for every 45–50 cubic feet of space. Factors such as glass doors, windows, and insulation can also affect heater size. Wellendi can help recommend the correct heater for your project.
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