The HUUM CLIFF 9 is a premium ultra-slim sauna heater engineered for maximum performance in tight spaces. Its narrow footprint and remarkably small safety clearances make it ideal for modern sauna designs where efficiency, layout flexibility, and clean aesthetics matter most. Designed for sauna rooms between 283 and 460 cubic feet, the CLIFF 9 delivers powerful, consistent heat within a compact form factor.
Despite its slim dimensions, the CLIFF 9 houses an impressive 165-lb stone capacity, enabling a soft, rich, and naturally stable heat. With more exposed stone surface than most heaters in its class, the CLIFF excels at producing smoother temperatures and deeply satisfying steam bursts.
The heater’s internal air duct accelerates warm-up times by up to 25%, while the removable rib structure allows precise stone stacking for optimized airflow and heating efficiency. Made from premium stainless steel and crafted in Estonia, the CLIFF series blends Scandinavian minimalism with industry-leading engineering.
Pair it with any HUUM UKU Control System, including Wi-Fi options that let you preheat your sauna directly from your smartphone. If you want a powerful heater with a compact footprint and world-class performance, the CLIFF 9 is the perfect choice.
