From the company's inception, our goal has been and continues to be "do the job right or don't do it at all."
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Serving New Jersey, New York, and Pennsylvania

CEI has pioneered the development of a retrofit process for exhaust systems in multi-family - mid and high-rise buildings. This includes turning the shaft into a sealed plenum, installing self-balancing dampers and/or fire dampers, and installing reduced HP fans. This was developed primarily to capture the energy savings by reducing the output of conditioned air to current code levels. This process also is the best insurance for balancing of exhaust systems to ensure IAQ and LL87 compliance for muli-family housing properties.


  • Apartment Buildings
  • Cooperative Buildings
  • Condominiums
  • Office Buildings
  • Medical Facilities
  • Penitentiaries
  • Schools
  • Manufacturing "Clean Rooms"
  • Hotels
  • Factories
  • Post Offices
  • Laboratories