Roth Industries, manufacturer of environmentally-friendly products that produce distribute and store energy for the most efficient homes, added Hydronic Systems Canada Inc. as a new manufacturers representative. Hydronic Systems will represent Roth’s radiant/hydronic, double-wall oil storage tanks, solar, geothermal and plumbing products in Ontario. To contact Hydronic Systems Canada, call 416/675-7651, fax 416/675-9804 or