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Healthy Building Services • Diagnostic Services • Laboratory Services

Indoor Environmental Engineering (IEE) is a building science consulting firm with 43 years of experience diagnosing building air quality problems and designing healthy and energy efficient indoor environments. Our staff of professional engineers, building scientists, and industrial hygienists investigate ventilation and indoor air quality issues in a wide range of building occupancy types, including office, hospital, school, laboratory, and single and multi-family residential.

Our Services Include:

Healthy Building Services. IEE provides annual proactive IAQ CheckUps, building materials, furnishings, and equipment emissions testing/modeling, ventilation system performance assessments, construction & renovation practice plans, and indoor air quality management plans.

Diagnostic Services. To address occupant indoor air quality concerns IEE utilizes a hypothesis-based six step protocol to quickly diagnose the problem and prescribe an effective mitigation measures. Our experienced field staff uses state-of-the-art instrumentation to quickly determine the quality of the indoor air, locations of air indoor contaminants, and building ventilation system performance.

Laboratory Services. IEE has state-of-the-art laboratories for measuring chemical emission rates from material, furnishings, and equipment, ventilation system performance, and air cleaner contaminant removal efficiencies.


IEE is committed to the advancement of

healthy indoor environments that are both

energy efficient and sustainable.



GPS Law Suit Against IEE and Francis "Bud" Offermann is Dismissed

Read the court order granting joint stipulation of dismissal with prejudice and the settlement agreement.

Beware the COVID-19 Snake Oil Salesmen are Here

And they are out to sell you air cleaners that they promise will

eliminate the SARS-CoV-2 airborne virus that causes COVID-19.

Managing Indoor Concentrations of Wildfire Smoke in Classrooms During the COVID-19 Pandemic

The COVID-19 pandemic presents a unique challenge to building operators/engineers approach to controlling indoor concentrations of wildfire smoke.

Chemical Emissions From Spray Polyurethane Foam (SPF) Insulation

Improperly mixing, storage, or application of SPF chemicals can result in harmful indoor air concentrations that can persist for decades.

California Wildfire Smoke Protection

How much protection does your building provide you from the wildfire smoke? See how to calculate your Building Protection Factor.

Use With Adequate Ventilation ???

Paints, strippers, cleaners, and adhesives often contain toxic chemicals that when used can result in exposures that cause acute adverse health effects, including death. Manufacturers can and should provide users with how much ventilation (cfm) is adequate.

Laminate Flooring Formaldehyde

Laminate flooring from Lumber Liquidators has been found to emit large quantities of formaldehyde. How to test the air in your home and emissions from this flooring.

The Hazards of E-Cigarettes

E-cigarettes are marketed as only producing harmless water vapor. However published literature shows that e-cigarettes contain many chemicals, including some that are carcinogenic.

Diagnosing Odor Problems in Buildings

Diagnosing the source of an odor in a building can often be frustrating. Here are some helpful tips,

Building-Related Moisture

Do you have mold growing behind furniture or in a closet ?

Try this DIY diagnostics for building-related moisture.

Addressing Mold In Homes

The four steps for addressing mold in your home.

More Publications >>

Current & Recent Projects

Infectious Disease Aerosol Exposures With and Without Surge Control Ventilation System Modifications

Ventilation and Indoor Air Quality in Multi-Family Homes

More Projects >>

News & Events

Indoor Air 2018

The Triennial International Scientific Conference on Indoor Air Quality and Climate, June 17-22, Philadelphia

More Industry News >>

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