Uponor Wirsbo celebrated its 20th year in the United States in 2004. Although the company traces its roots to 1620 in Sweden, Wirsbo became incorporated in the U.S. in 1984. Wirsbo is a leading manufacturer of crosslinked polyethylene (PEX) tubing used in plumbing, fire sprinkler and hydronic radiant floor heating systems. In addition to its role in making radiant floor heating the fastest growing segment in the heating industry, Wirsbo has created a range of solutions for both the residential and commercial markets, including turf conditioning, snow and ice melting, Radiant Ready™ for basements, AQUAPEX® for potable water systems, AQUASAFE™ multi-purpose plumbing and fire sprinkler systems.