Based in Denmark, Grundfos is the largest manufacturer of pumps in the world. The Grundfos Pumps range from Circulator pumps to centrifugal and submersible pumps. With the annual production of over 10 million pumps, the company supplies about half of the world’s demand. The products are used for HVAC related needs both commerically and residentual. the company operates on 5 continets with brances in dozens of countries.