HETI helps clients find effective solutions to their indoor air quality (IAQ) problems – using a practical and professional approach that blends environmental health, engineering, industrial hygiene, and risk management expertise. We offer a wide range of IAQ services including: investigation and assessment of indoor air for chemical and biological contaminants, such as microbial matter, odors, etc.; air monitoring and sampling strategies; remedial design, recommendations, and oversight; regulatory support; and training.