What do the Experts Say?

Research has found conclusive results: Trane CleanEffects™ is the world’s most effective whole-house air filtration system. Some of the industry’s leading experts, including Harvard professors Dr. Jack McCarthy and Dr. John Spengler, give proof to this claim after administering rigorous tests as part of a joint research project between the firm Environmental Health & Engineering and the Harvard School of Public Health.


In their own words


Watch what these Harvard professors have determined about the effectiveness of Trane CleanEffects™.

Expert Analysis

Researchers and engineers looking for more detailed information can download the full report.

Full Report



Expert bios


Dr. Jack F. McCarthy

Dr. John D. Spengler

  • Jack F. McCarthy, Sc.D., C.I.H.

    Dr. McCarthy holds an Sc.D. in environmental science and physiology from Harvard University and is President of Environmental Health & Engineering, Inc. He serves as a consultant to the Department of Environmental Health at the Harvard School of Public Health, the Energy Laboratory at the Massachusetts Institute of Technology, the National Institute for Occupational Safety and Health, the World Health Organization and the U.S. Environmental Protection Agency.

  • John D. Spengler, Ph.D.

    Dr. Spengler is a professor of environmental health and human habitation at Harvard University's School of Public Health. He serves as an advisor to the World Health Organization on indoor air pollution, personal exposure and air pollution epidemiology, and he has served as either a member or consultant on various U.S. EPA Science Advisory Board committees.

Test Test2