The following rep firms now represent E Instruments Group, which offers a line of HVAC instruments:

Edward R. Stephen Co. of Billerica, Mass. for the New England market;

Thompson-Withers LLC of Frederick, Md., for Maryland, District of Columbia, Virginia and Florida;

Quality Equipment Sales of Pottstown, Pa., for Pennsylvania, New Jersey and Delaware;

C&C Marketing of Vestal, N.Y., for the New York market.