Brand Details
Amtrol was founded in 1946 on the idea that innovation, quality and service will be rewarded with customer loyalty and support. In 1954, we revolutionized the hydronic industry when they introduced Extrol, the world’s first pre-pressurized diaphragm expansion tank. This was followed by the invention of the first pre-pressurezed well tank in 1967 with the invention of the refrigerant gas cylinder. Amtrol went on to invent the indirect fired water heater in 1980 and the thermal expansion tank in 1991.