Pearson and Wirsbo get new administrators.

Pearson Engineering Associates, Inc., a mechanical, plumbing and electrical engineering firm in Phoenix, has hired Gordon Sanders as field inspector/project manager.

Wirsbo Company, manufacturer of PEX tubing used in radiant floor heating and plumbing systems, has named Jim Bjork as managing director in charge of all operations for Wirsbo U.S. Wirsbo has also added Jackie Sharrock to its sales and marketing team. As regional sales manager for the Northwest region, she will be in charge of radiant floor heating and AQUAPEXR sales in Alaska, Colorado, Idaho, Montana, Nebraska, Nevada, Oregon, Utah, Washington and Wyoming.