Ideal Plain

The Ideal Plain is Britain’s most iconic and widely recognised ‘school radiator,’ produced by the National Radiator Company (the European branch of the American Radiator Company) from around 1905 until the 1940s. It became synonymous with schools, libraries, and other public institutions across Britain and Europe, where durability and efficiency were paramount.

As the direct successor to the Peerless radiator—the first radiator specifically advertised for schools—the Ideal Plain built on its predecessor’s success. Its heavy cast iron construction, a hallmark of school radiators, allowed it to endure the wear and tear of high-traffic environments. The thickness of its castings made it even more durable than most residential radiators, withstanding decades of constant use. Today, its widespread survival is a testament to its robust design and popularity over the years.