The Clean Comfort of Preferred Air!

Things To Look For With Commercial Ventilation Problems


  • Check make-up air mix
  • Set make-up air at 15 cfm/occupant
  • closing make-up air is a mistake
  • Air to air heat exchanger
  • Positive pressure
  • Thermostat operating properly
  • Dampers open and operating
  • Air balanced not stagnating


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