When Alpha Energy Solutions technicians performed preventative maintenance at a multi-screen theater complex, they discovered that some aging heat exchangers were in perilous condition. The complex, built in the 1980s, contained 35 rooftop units. Close inspection by Alpha’s technicians revealed that eight of these units were beyond repair, that the metal parts had rusted completely through, creating a hazardous situation.  The units had suffered from routine wear and tear and would not likely have made it through another heating season. It…