ONYX: Rointe’s next-generation storage heaters

As energy efficiency and intelligent control continue to reshape electric heating, Rointe introduces ONYX, a new generation of high heat retention (HHR) storage heaters combining advanced design, connectivity, and real energy savings.
Developed for the next era of efficient home heating, ONYX features 60% heat retention and up to 37% energy savings compared to conventional storage systems.
Its unique magnetite stone cells store heat efficiently for up to 16 hours, providing steady warmth through