The Willis Immersion Heater

Third generation, Jack Willis, Fred Willis’ son, invented probably the best known of all the Willis inventions, the Willis Immersion Heater.

At one time there was hardly a household in Northern Ireland that did not have a Willis Immersion Heater, and a high proportion still have. As our history shows, the Willis name has always been associated with innovation, quality, service and performance. This remains true of the Company today.

Our success and reputation has ensured repeat business and negotiated orders since 1887, an unrivalled record which speaks for itself.