DALLAS–(BUSINESS WIRE)–The SEER Group, a collection of 40 residential and commercial HVAC, electrical, and plumbing businesses across 11 states, announced that Harish Ramalingam has been appointed Chief Executive Officer, effective April 30, 2026. He succeeds Justin Nagy, who is leaving for a CEO role outside the industry after helping build SEER’s national platform and expand its network of partner brands. Ramalingam joins SEER as the company continues its strong growth trajectory, building