What does it cost and how do I register?

Who should get the CIE certification?

Do you work in the field of indoor air quality (IAQ)? The Council- certified Indoor Environmentalist (CIE) is the most popular indoor air quality certification. If you investigate air quality problems such as mold, VOCs, allergens, dampness, poor ventilation and sick building syndrome, the CIE is great certification to substantiate your knowledge and experience.

The CIE certification will demonstrate to your clients that you:

  • Excel at diagnosing, resolving and preventing common IAQ problems
  • Understand how a building’s HVAC system can control (and cause) IAQ problems
  • Incorporate the full spectrum of contaminants into your IAQ assessments, which may include mold, bacteria, VOCs, carbon monoxide, radon, triggers to asthma & allergies and more
  • Apply current industry guidelines
  • Comprehend the fundamentals of building science
  • Use IAQ instruments and equipment to measure contaminants

The certification is designed for environmental consultants, HVAC professionals, property inspectors, industrial hygienists, restoration contractors and others working in fields related to indoor air quality.

What is your course?

Indoor Sciences teaches a class to prepare you for the CIE certification.  Our class has gone through a rigorous review process and has been approved by the Indoor Air Quality Association (IAQA).  Although most refer to this class as the “CIE Course”, its official title is the IAQA Indoor Environmentalist Course.

What are the prerequisites for getting CIE certified?

Just attending our CIE preparatory course does not make you certified, although you will receive a certificate of completion from the Indoor Air Quality Association.  To actually become certified as a CIE, you must first meet certain experience requirements and pass an examination offered  through the independent certifying body, American Council for Accredited Certification (ACAC).

Before you are allowed to take the ACAC’s CIE examination, you must first fill out an application that describes your experience in the field of indoor air quality.  If you are new to the field and don’t have any experience, consider taking the CRIE: Council- Certified Residential Indoor Environmentalist.   CIE applicants must possess one of the following combinations of two (2) years education and relevant field experience:

  • No degree, with at least two (2) years of documented field experience conducting indoor air quality investigations. (High school diploma or GED required.)
  • A 2-year post-secondary degree or its equivalent (15 credit hours) in engineering, science, architecture, industrial hygiene or related field of science with a minimum of one (1) year of documented field experience conducting indoor air quality investigations.

If you have significantly more experience, you may want to consider the CIEC.

Is this an online course, or an on-site course?

Both! You can either take the class online, or face-to-face at one of our on-site courses scheduled throughout the US.

The online class consists of videos that you watch at your own pace.  It takes about 32 hours to complete the online course.  Online students get access to the videos for 90 days and indefinitely keep the course manual for future reference.  Extensions can be purchased for a fee.

Our face-to-face, on-site courses are condensed down into two 8 hour days for a fast-paced format.  The following are upcoming class dates:

  • February 12-13, 2019 in Orlando
    • Courtyard by Marriott Maitland, 1750 Pembrook Drive, Orlando, FL 32810
  • May 14-15, 2019 in Chicago
    • Hampton Inn Naperville, 1087 E Diehl Rd, Naperville, IL 60563
  • September 10-11, 2019 in Richmond
    • 1551 Oakbridge Dr. Suite B Powhatan, Va 23139
  • November 6-7, 2019 in Irvine, CA
    • 17461 Derian Ave #100, Irvine, CA 92614
  • (also available as an online course!)


What does it cost and how do I register?

The cost of the course is $795, whether taken online or on-site. IAQA members get a $100 discount.

To sign up for the ONLINE class, click this link: CIE Online Registration or give us a call at (312) 920-9393.

To sign up for an ON-SITE class, click this link: CIE On-site Registration or give us a call at (312) 920-9393.

The classes above include our CIE practice exam.  If you would like to take our practice exam by itself, the cost is $199.  To sign up, click this link: CIE Practice Exam.  Please note that the practice exam does not explain why the correct answers are correct and the wrong answers are wrong.

Is the exam difficult?

Many consider the CIE exam to be difficult. The ACAC published their 2011 pass ratios and the CIE’s was listed at only 51%. Don’t fret! Indoor Sciences has put together a class that is designed to prepare you for success.

You take the CIE exam at a proctored testing location.  You can find a proctored testing location by clicking this link: Testing Locations

The following are important details related to the CIE examination:

  • All multiple choice questions with four possible answers
  • 100 total questions
  • Passing grade is 75%
  • Duration: 3 hours (You can leave if you finish early)
  • Closed-book exam (You cannot bring any personal belongings with you, or they will be stored outside the exam room)

How is the CIE different from the CIEC and CRIE?

These three certifications cover a similar body of knowledge. Therefore, we have one single class that prepares students for all three of these certifications equally. Through the years, our course has been equally successful at preparing students for all three designations.

Why should I take a class from Indoor Sciences?

We guarantee that you’ll pass!  If you complete our course and score a 90% or higher on any attempt on our practice exam, we’ll pay for your retest fee.  If you fail your retest, we’ll refund your entire registration fee!

Why are we so confident you will pass?  We carefully explain how to arrive at the right answer to over 150 questions similar to ones found on the CIE examination.  Register for this class and stop worrying about passing!

Need more reasons to take the class?  Gather all your complex questions, because our classes are taught by an internationally recognized expert on indoor air quality, Ian Cull, PE, CIH.  You can trust that the course’s technical information is based on sound science.  Indoor Sciences doesn’t sell products, nor do we push or promote any one technology, device manufacturer or laboratory.  We have no ulterior motives!  Finally, this course has been peer reviewed and approved by the Education Committee of the Indoor Air Quality Association (IAQA).

What is the cancellation and refund policy?

Need to cancel a class?  Click on the following link: Cancellation and Refund Policy.

What topics are covered?

The CIE course covers a wide range of topics related to IAQ contaminants, health effects, building science, HVAC, equipment, assessments, standards, and remediation.  To view a comprehensive list of topics covered, see below:


  • IEQ
  • Sick Building Syndrome
  • Building Related Illness
  • Dose Response
  • Microns
  • Taxonomy
  • Ecology
  • Mold
  • Mold Spores
  • Common Mold Types
  • Health Effects of Mold
  • Dampness and Health
  • Bacteria
  • Legionella
  • Tuberculosis
  • Viruses
  • Allergens
  • VOCs
  • VOC Sources
  • Common VOCs
  • Reducing VOCs
  • Multiple Chemical Sensitivity
  • Radon
  • Particulate
  • Carbon Monoxide


  • IAQ Problems
  • Controlling IAQ Problems
  • Air Pressure
  • Pressurization
  • Causes of Pressurization
  • Stack Effect
  • Psychrometrics
  • Air Infiltration
  • Vapor Diffusion
  • Condensation
  • Building Security


  • Intro to HVAC
  • Control of Contaminants
  • Problem Areas
  • Air Distribution Systems
  • VAV Problems
  • Ductwork
  • Humidity Control
  • Ventilation
  • Outdoor Air Intakes
  • Ventilation Effectiveness
  • Filtration
  • Filter Efficiencies
  • Filter Replacement
  • Electronic Air Cleaners
  • Gas Phase Filtration
  • HVAC Maintenance
  • HVAC Inspections


  • Assessments
  • Gathering Information
  • Walk Through Inspections
  • Instrumentation
  • Indicator Measurements
  • Assessing Ventilation
  • CO2 and Ventilation
  • Assessing Pressurization
  • Assessing Surface Moisture
  • Infrared Thermography
  • Mold Sampling
  • Air Sampling
  • Viable Air Sampling
  • Spore Trap Sampling
  • Interpreting Air Samples
  • Pump Calibration
  • Surface Sampling
  • Dust Sampling
  • Other Mold Sampling
  • Conditions During Sampling
  • Assessing Particulate Matter
  • Assessing VOCs


  • ASHRAE 62.1 Scope
  • 62.1 Definitions
  • 62.1 Acceptable IAQ
  • 62.1 Ventilation Rate Procedure
  • 62.1 IAQ Procedure
  • 62.1 Outdoor Air Requirements
  • 62.1 Equipment Requirements
  • 62.1 Operations and Maintenance
  • ASHRAE 55
  • 55 Air Speed
  • 55 Measurements
  • Exposure Guidelines
  • MSDSs
  • ACAC Code of Conduct


  • Purpose of Mold Remediation
  • Remediation Qualifications
  • Communication
  • Water Damage
  • Structural Drying
  • Engineering Controls
  • Isolation
  • Pressure Differential
  • Air Changes
  • Personal Protective Equipment
  • Respirators
  • Cleaning vs. Removal
  • Hard Surfaces
  • Porous Surfaces
  • Disposal
  • Controlling and Preventing Mold
  • Antimicrobial Use
  • Antimicrobial Nomenclature
  • Antimicrobials Precautions

To register for the class, give us a call at (312) 920-9393 or click one of the following links: CIE Online, CIE On-site.

It is your responsibility to notify us in writing if you would like us to report your continuing education directly to a state licensing agency (e.g. FL Dept. of Professional Regulation) or professional organization.