The HUUM CORE ST electric sauna heater 9 kW is designed for sauna owners who want powerful heat and complete design freedom in one refined centerpiece. Its open, case-free design allows you to finish the exterior in materials that match your vision—whether warm wood, sleek tile, natural stone, or glass—creating a seamless, built-in look. The compact profile and minimal safety clearances make it easy to integrate into modern layouts, including embedding directly into a bench for a clean architectural appearance. Designed to heat medium to larger sauna rooms with steady, enveloping warmth, it responds beautifully when water is poured over the stones, producing soft, satisfying steam. When paired with a compatible HUUM UKU control (sold separately), you can start and manage your sauna from your mobile device for a personalized, ready-when-you-are experience.