Indoor Air Quality (IAQ) has been receiving much attention in densely populated cities like Hong Kong where many habitants spend much of their times in high-rise apartments and enclosed buildings. Studies have clearly shown that poor indoor air quality associates with higher potential health risk. Air impurities could readily lead to various skin irritations, whereas longer term ailments related to respiratory or cardiovascular disease and cancer could result from regular exposure to harmful chemicals such as formaldehyde. Poor indoor air quality does not only pose dangers to our health, it also carries extra economic burden to our society with loss of productivity and additional medical attention required. PolyU has long been active in Indoor Air Quality research and offering of related services under the broad aspect of Indoor Environmental Quality (IEQ) that evaluates the overall building environmental performance (e.g., BEAM assessment). To promote community awareness for improved indoor environment, Prof. Daniel W.T. Chan of Department of Building Services Engineering has invented an affordable all-in-one Indoor Environmental Quality Logger to measure air quality, thermal comfort, visual comfort and aural comfort. The physical measurements of over 10 parameters together with user-feedbacks on environmental comfort level will help determine optimal indoor environmental settings for typical habitants without resolving to professional analysis. Commercially, the IEQ Logger will best assist property management companies to enhance tenants and their customers' indoor comfort level. For the technical minded, the assessment results can facilitate building services engineers, management service providers to readily assess the various comfort-related conditions on site for immediate actions of improvement. Supported by various laboratories and research centres, our consultants from related engineering departments offer a wide range of sophisticated consultancy services such as energy resources studies and audits, building automation and intelligence, electrical installations and systems, building facilities and safety engineering, etc. For additional information and inquiries please feel free to contact Miss Kit Chan via phone at (852) 3400-2713 or via e-mail at ptec@inet.polyu.edu.hk.