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    Certified Indoor Environmentalist (CIE)


    Additional information


    Data sheet

    Certification included

    To request more information, you can contact us via online chat, our website contact form, or toll free at 1-855-201-6910.

    Online courses are accessible 24/7/365 and self-paced, allowing you to progress at your own pace on your own schedule. They can be taken from anywhere in the world from the comfort of your own home. Classroom courses have a set schedule of the days and times the courses will be held, and you must attend during those specific times.

    Find out if online learning is right for you by contacting our team of registration advisers. Our team is available to answer any of your questions about taking an online course before you commit to enrolling. We will walk you through what to expect to ensure you are making the right decision. You can contact a registration adviser today via online chat, our website contact form, or toll free at 1-855-201-6910.

    No, you are not required to have a diploma or higher education degree to enroll in an online course. However, some occupations may require minimum educational thresholds for employment or certification. For more information on your desired career requirements, please contact us via online chat, our website contact form, or toll free at 1-855-201-6910.

    To take an online course, you will need to have access to an internet connection and an internet ready device such as a laptop, PC, or tablet. For course specific requirements, please visit the course page or contact a registration adviser today.

    Our courses are developed with multiple formats including text, audio, video, and interactivity. Our courses also include multiple resources and tools which can include flashcards, games, activities, and more.

    No, you can take the online courses from anywhere in the world.

    We participate in several financial assistance options including third party funding, both military and non-military. To request more information on the financial assistance options available and check your eligibility, contact us via online chat, our website contact form, or toll free at 1-855-201-6910.

    Duration is the amount of time you will receive access to your course. Durations vary by course and range between 1 month and 12 months. If you complete your course before your duration ends you will continue to have access to your course until the duration period ends.

    Many of our career training programs include certification vouchers. This means that at the successful completion of your course, at no additional charge, you will receive an exam voucher for the corresponding industry certification. This voucher will allow you to register and sit for the appropriate certification exam to obtain your industry credential.

    Our online courses are open enrollment, so you can start immediately. If you are using any third-party funding to cover your course tuition, your start date may be a future date determined by your funding program.

    Once enrolled, you will be assigned a client adviser who will provide you with customer and technical support. Your client adviser will supply you with your course access information, any needed materials, and be available to answer any questions you have during your training experience. They will regularly check-in with you to monitor your progress and assist you with staying on track. You will also be assigned to a course mentor who will provide curriculum support throughout your training. Your mentor is available to answer any questions you have on your course curriculum, will monitor your progress and understanding of the curriculum, and may give assignments or quizzes.

    If you experience any trouble accessing your course including technical issues or lost login credentials, please contact your client adviser at helpdesk@worldeducation.net.

    We strive to provide a fully online experience for students however some of our training courses include physical materials or equipment. Courses that have materials shipped directly to students will be shipped within 7 business days of registration. Some training courses have material for different sections and these courses may require multiple shipments as you completed stages of your course.

    Our goal for students is to successfully complete their training course and achieve their career goals. We understand that extenuating circumstances can interfere with your ability to complete your course in the duration given. Because of this we have free or low-cost extensions available for our courses upon request. To discuss or request an extension please contact your client adviser at helpdesk@worldeducation.net.

    Upon successful completion of your course and fulfillment of any outstanding financial obligations, you will receive your certificate of completion. Certificates are provided to you within 30 days of completion. Your certificate will validate the training course you completed with a stamp of completion.

    Students that successfully complete our career training programs are assigned a career development adviser who will coordinate placement at a local externship or hands on opportunity. These opportunities are optional and may vary based on availability and occupation. Your career development adviser will also provide job search services such as: resume building, mock interviews, job opportunity resources, and more. Our professional enrichment courses do not come with a career adviser or career services.

    Website Short Description

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

    We're all concerned about the air quality in their workplace, home or school. The Certified Indoor Environmentalist training program will help you determine if these clients do, in fact, have a problem. You'll learn the practical steps you should always follow in an indoor environmental assessment, how to take samples, and how to resolve common IAQ problems. You'll learn about HVAC, building science, and the major contaminants, including their health effects.

    Not only does our certified environmentalist training program teach you practical skills to assess indoor environments, it also prepares you for the CIE and CIEC certifications by the American Council for Accredited Certification (ACAC). All the pertinent topics covered on the certification exams, including a 100-question practice examination, are included in this program to prepare you for certification.

    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


    6 months



    Instructor Description

    This course provides students with certified, skilled facilitators to guide them through their learning experience. Facilitators who are well trained in a unique mastery methodology and provide one-on-one instruction to their students to ensure mastery of the course material. The course facilitator is available to answer any questions a learner may have including questions on course content, course material, certifications, and even industry questions. Facilitators also monitor the progress of learners to ensure training retention and program advancement. The facilitator for this course, Ian Cull, PE, CIEC, CMC, CIAQP, is the president of Indoor Sciences and was elected in 2006 and 2009 by the membership of the Indoor Air Quality Association (IAQA) to serve on its board of directors for three-year terms. Ian was elected as the organization's vice president in 2008 and 2009. He also served as a non-voting board member for the Indoor Environmental Standards Organization (IESO) from 2007-2009.

    Ian first started in the fields of indoor air quality and sustainability in 1995 when he joined Chelsea Group, Ltd., an IAQ and sustainability consulting firm. Ian has developed and taught numerous seminars, certification programs, and customized presentations, reaching well over 1,000 individuals in the U.S. and several other countries, including China and India. Ian is a master trainer for the IAQA and has taught their programs: Certified Indoor Environmentalist, Fundamentals of Indoor Air Quality and HVAC, Certified IAQ Manager, and Certified Microbial Investigator. His in-depth knowledge in all aspects of building science, IAQ, and sustainability make him a highly respected and commended teacher.

    Ian is a professional environmental engineer whose skill in the classroom is based on his vast experience managing a large number of projects focused on improved indoor environments and sustainability. He has completed assessments in offices, schools, homes, dormitories, condominiums, hospitals and health care facilities. Ian is proficient not only in finding problems, but also in offering appropriate solutions and recommendations to prevent future re-occurrences.

    Ian is also well known for developing three educational Web sites:


    These helpful tools allow professionals in the sustainability and IAQ fields to collaborate and share information. More than 2,000 unique visitors use these sites each month.

    Ian has a Bachelor's of Science degree in engineering from one of the country's top environmental engineering programs at University of Illinois, Champaign-Urbana. He is a licensed Professional Engineer (PE) in the state of Illinois, a Certified Indoor Environmental Consultant (CIEC), a Certified Microbial Consultant (CMC), and a Certified Indoor Air Quality Professional (CIAQP).

    Ian is a member of the IAQA, the Chicago Chapter of the U.S. Green Building Council, the International Society of Indoor Air Quality and Climate, and the American Society of Heating, Refrigerating, and Air-Conditioning Engineers.

    Ian is committed to seeing the fields of IAQ and sustainability grow in the right direction. To that end, he spends a great number of hours each week volunteering on committees and boards, including the following committees:

    •Chairman, IAQA's Futures Committee: 2007-present
    •Chairman, IAQAware subcommittee: 2005-present
    •Chairman, IAQA's Ad-Hoc Committee on Conflict of Interest: 2007, 2008
    •Chairman, IAQA's Ad-Hoc Web site Committee: 2009
    •IAQA's CIE subcommittee: 2003-present
    •IAQA's Education Committee: 2005-present
    •IAQA Nominating Committee: 2007, 2008

    Required Materials

    All required reference materials are provided with this program. Technical requirements:

    Internet Connection
    • Broadband or High-Speed (DSL, Cable, Wireless)
    Hardware Requirements
    • Processor - 2GHz Processor or Higher
    • Memory - 1 GB RAM Minimum Recommended

    Software Requirements
    • Operating Systems - Windows 7, 8 or 10; Mac OS x 10 or higher
    • Internet Browsers - Google Chrome is highly recommended
    • Cookies MUST be enabled
    • Pop-ups MUST be allowed (Pop-up Blocker disabled)


    I. IAQ CONTAMINANTS AND HEALTH EFFECTS a. IEQ b. Sick Building Syndrome c. Building Related Illness d. Dose Response e. Microns f. Taxonomy g. Ecology h. Mold i. Mold Spores j. Common Mold Types k. Health Effects of Mold l. Dampness and Health m. Bacteria n. Legionella o. Tuberculosis p. Viruses q. Allergens r. VOCs s. VOC Sources t. Common VOCs u. Reducing VOCs v. Multiple Chemical Sensitivity w. Radon x. Particulate y. Carbon Monoxide II. THE BUILT ENVIRONMENT a. IAQ Problems b. Controlling IAQ Problems c. Air Pressure d. Pressurization e. Causes of Pressurization f. Stack Effect g. Psychrometrics h. Air Infiltration i. Vapor Diffusion j. Condensation k. Building Security III. HVAC a. Intro to HVAC b. Control of Contaminants c. Problem Areas d. Air Distribution Systems e. VAV Problems f. Ductwork g. Humidity Control h. Ventilation i. Outdoor Air Intakes j. Ventilation Effectiveness k. Filtration l. Filter Efficiencies m. Filter Replacement n. Electronic Air Cleaners o. Gas Phase Filtration p. HVAC Maintenance q. HVAC Inspections IV. EQUIPMENT AND ASSESSMENTS a. Assessments b. Gathering Information c. Walk Through Inspections d. Instrumentation e. Indicator Measurements f. Assessing Ventilation g. CO2 and Ventilation h. Assessing Pressurization i. Assessing Surface Moisture j. Infrared Thermography k. Mold Sampling l. Air Sampling m. Viable Air Sampling n. Spore Trap Sampling o. Interpreting Air Samples p. Pump Calibration q. Surface Sampling r. Dust Sampling s. Other Mold Sampling t. Conditions During Sampling u. Assessing Particulate Matter v. Assessing VOCs V. GUIDELINES, REGULATIONS AND STANDARDS a. ASHRAE 62.1 Scope b. 62.1 Definitions c. 62.1 Acceptable IAQ d. 62.1 Ventilation Rate Procedure e. 62.1 IAQ Procedure f. 62.1 Outdoor Air Requirements g. 62.1 Equipment Requirements h. 62.1 Operations and Maintenance i. ASHRAE 55 j. 55 Air Speed k. 55 Measurements l. Exposure Guidelines m. MSDSs n. ACAC Code of Conduct VI. REMEDIATION a. Purpose of Mold Remediation b. Remediation Qualifications c. Communication d. Water Damage e. Structural Drying f. Engineering Controls g. Isolation h. Pressure Differential i. Air Changes j. Personal Protective Equipment k. Respirators l. Cleaning vs. Removal m. Hard Surfaces n. Porous Surfaces o. Disposal p. Controlling and Preventing Mold q. Antimicrobial Use vr. Antimicrobial Nomenclature s. Antimicrobials Precautions



    There are no prerequisites to taking the CIE Program.

    Technical Requirements

    All required reference materials are provided with this program. Technical requirements: Internet Connection • Broadband or High-Speed (DSL, Cable, Wireless) Hardware Requirements • Processor - 2GHz Processor or Higher • Memory - 1 GB RAM Minimum Recommended Software Requirements • Operating Systems - Windows 7, 8 or 10; Mac OS x 10 or higher • Internet Browsers - Google Chrome is highly recommended • Cookies MUST be enabled • Pop-ups MUST be allowed (Pop-up Blocker disabled)


    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. Each state may have additional licensing requirements, be sure to research your states requirements for employment by visiting your states occupation board.

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