Harvia Onni Sienna One infrared sauna

Onni Sienna One offers flexible infrared comfort that is ready when you are. The heating elements deliver warmth almost immediately. A full-spectrum radiator behind the back works together with carbon panels at the sides, under the calves and under the feet. This layered configuration ensures balanced, even infrared warmth across the body. The mahogany exterior features a warm, natural tone that gives the cabin a grounded and inviting appearance. Inside, the combination of mahogany and hemlock creates a balanced atmosphere with a smooth, comfortable surface. The open glass front maintains a clear and calm design. The large touch screen allows intuitive control of temperature and lighting. Chromotherapy lighting and integrated Bluetooth audio add flexibility to each session. The cabin is delivered in structured elements with integrated technology, allowing installation within a few hours and dependable everyday performance. Onni Sienna One is your personal infrared retreat — natural in character, balanced in performance, and designed for long-term daily comfort.