Intermatic traces its history to 1891, when the Pratt & Englund Company began manufacturing streetcar fare registers in Chicago. The business later became the International Register Company and introduced its first Inter-Matic time switch in 1945, establishing the foundation for decades of innovation in electrical controls and energy management.

Since then, Intermatic has grown into a global manufacturer serving residential, commercial, industrial and OEM markets. Its HVAC/R product portfolio includes timer controls, defrost timers, refrigeration controls, hour meters, surge protection and related accessories. Designed for dependable performance and straightforward installation, Intermatic solutions help professionals manage equipment operation, reduce energy waste and protect critical heating, cooling and refrigeration systems.

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