Dr. Jeffrey Siegel

Dr. Jeffrey Siegel

Principal Investigator

Jeffrey Siegel, Ph.D., is Professor of Civil Engineering and the Bahen/Tanenbaum Chair in Civil Engineering. He holds joint appointments at the Dalla Lana School of Public Health and the Department of Physical & Environmental Sciences.  He holds an M.S. and Ph.D. in Mechanical Engineering from the University of California, Berkeley as well as a B.Sc. from Swarthmore College.  He is fellow of ASHRAE and a member of the Academy of Fellows of ISIAQ.  His research interests include healthy and sustainable buildings, ventilation and indoor air quality in residential and commercial buildings, control of indoor particulate matter, the indoor microbiome, and moisture interactions with indoor chemistry and biology.  Dr. Siegel is an active member of ISIAQ and ASHRAE and was an associate editor for the journal Building and Environment from 2014-2018.  He teaches courses in indoor air quality, sustainable buildings, and sustainable energy systems. Prior to his position at the University of Toronto, Dr. Siegel was an Associate Professor at the University of Texas.


Identifying Factors that Impact Portable Air Cleaner Performance

Identifying Factors that Impact Portable Air Cleaner Performance

This project examines how people and the environment can impact the performance of portable air cleaners through a literature review, modelling, and an intervention study.

Health and comfort
Particle Filter System Control

Particle Filter System Control

This project uses novel simulation techniques to evaluate how different control strategies for central filtration systems and portable air cleaners to optimize health outcomes while reducing energy usage.

Health and comfort Resilience Energy and GHG emissions
In-situ testing of portable air cleaners.

In-situ testing of portable air cleaners.

Portable air cleaners are commonly used to reduce the concentrations of particulate matter (PM) and other airborne pollutants in indoor environments. This project evaluates the in-situ performance of three portable air cleaners in residential sites, classrooms, and office environments using low-cost sensors.

Health and comfort
Assessing and improving ventilation system performance in Canadian multi-unit residential buildings

Assessing and improving ventilation system performance in Canadian multi-unit residential buildings

Assess performance of the centralized pressurized corridor ventilation system vs. decentralized ERV system in two architecturally similar side-by-side high-rise MURBs in Toronto and investigate methods to improve performance through coupled energy and airflow simulations.

Health and comfort Energy and GHG emissions
Estimating Indoor Airborne Concentrations of SARS-CoV-2

Estimating Indoor Airborne Concentrations of SARS-CoV-2

Using the quantitative filter forensics equation and metadata, along with RT-qPCR data from dust vacuumed off of portable air cleaner filters, I estimated indoor airborne concentrations of SARS-CoV-2 in covid-positive homes and in the community.

Health and comfort


Journal Publications
Journal Publications

Hoskin Z, Siegel JA, Haines S. 2024. Estimating indoor airborne concentrations of SARS-CoV-2 RNA using quantitative filter forensics. Building and Environment, 259, 111632. DOI: 10.1016/j.buildenv.2024.111632 | Summary | Filter Forensics

Katz A, Li T, James L, Siegel JA, O'Campo P. 2023. Systematically omitting indoor air quality: sub-standard guidance for shelters, group homes and long-term care in Ontario during the COVID-19 pandemic. Critical Public Health, 33(5), 683Ð696. DOI: 10.1080/09581596.2023.2262736 | Summary | IEQ and COVID-19

Tang M, Siegel JA, Corsi RL, Novoselac A. 2023. Impacts of usage conditions on performance of ozone removal devices in ventilation systems. Building and Environment, 241, 110460. DOI: 10.1016/j.buildenv.2023.110460 | Summary | Filtration Performance

Du B, Siegel JA. 2023. Estimating indoor pollutant loss using mass balances and unsupervised clustering to recognize decays. Environmental Science and Technology, 57, 10030–10038. DOI: 10.1021/acs.est.3c00756 | Summary | Machine Learning and IEQ

Persily AK, Siegel JA. 2022. Improving ventilation performance in response to the pandemic. The Bridge, 52(3), 45296. DOI: 10.17226/885 | IEQ and COVID-19

Mendell A, Olson A, Siegel JA. 2022. Evaluation of fixed and adaptive concentration thresholds for particle filter systems. Indoor Air, 32(10), e13134. DOI: 10.1111/ina.13134 | Summary | Machine Learning and IEQ

Tang M, Siegel JA, Corsi RL, Novoselac A. 2022. Evaluation of ozone removal devices applied in ventilation systems. Building and Environment, 225, 109582. DOI: 10.1016/j.buildenv.2022.109582 | Summary | Filtration Performance

Kvasnicka J, Cohen Hubal EA, Siegel JA, Scott JA, Diamond ML. 2022. Modeling clothing as a vector for transporting airborne particles and pathogens across indoor microenvironments. Environmental Science and Technology, 56(9), 5641Ð5652. DOI: 10.1021/acs.est.1c08342 | Summary | IEQ and COVID-19

Wan Y, Diamond ML, Siegel JA. 2022. Quantitative filter forensics for semi-volatile organic compounds (SVOCs) in social housing apartments. Indoor Air, 32(2), e12994. DOI: 10.1111/ina.12994 | Summary | IEQ in Social Housing

Mendell A, Mahdavi A, Siegel JA. 2022. Particulate matter concentrations in social housing. Sustainable Cities & Society, 76, 103503. DOI: 10.1016/j.scs.2021.103503 | Summary | IEQ in Social Housing

Li T, Siegel JA. 2021. The impact of control strategies on filtration performance. Energy & Buildings, 251, 111378. DOI: 10.1016/j.enbuild.2021.111378 | Summary | Filtration Performance

Du B, Schwartz-Narbonne H, Tandoc M, Heffernan EM, Mack ML, Siegel JA. 2021. The impact of emissions from an essential oil diffuser on cognitive performance. Indoor Air, 32, e12919. DOI: 10.1111/ina.12919 | Summary | IEQ and Cognitive Function

Schwartz-Narbonne H, Abbatt J, DeCarlo PF, Farmer DK, Mattila J, Wang C, Donaldson DJ, Siegel JA. 2021. Modelling the removal of water-soluble trace gases from indoor air via air conditioner condensate. Environmental Science and Technology, 55, 10987-10993. DOI: 10.1021/acs.est.1c02053 | Summary | Indoor Chemistry

Schwartz-Narbonne H, Du B, Siegel JA. 2021. Volatile organic compound and particulate matter emissions from an ultrasonic essential oil diffuser. Indoor Air, 31(6), 1982-1992. DOI: 10.1111/ina.12845 | Summary | Indoor Chemistry

Vakalis D, Diaz Lozano Patiño E, Opher T, Touchie M, Burrows K, MacLean HL, Siegel JA. 2021. Quantifying thermal comfort and carbon savings from energy-retrofits in social housing. Energy & Buildings, 241, 110950. DOI: 10.1016/j.enbuild.2021.110950 | Summary | Building Energy

Maestre JP, Jarma D, Yu J-R F, Siegel JA, Horner S, Kinney KA. 2021. Distribution of SARS-CoV-2 RNA signal in a home with COVID-19 positive occupants. Science of the Total Environment, 778, 106201. DOI: 10.1016/j.scitotenv.2021.146201 | Summary | IEQ and COVID-19

Givehchi R, Du B, Razavi M, Tan Z, Siegel JA. 2021. Performance of nanofibrous media in portable air cleaners. Aerosol Science and Technology, 55(7), 805-816. DOI: 10.1080/02786826.2021.1901846 | Summary | Filtration Performance

Wan Y, North ML, Navaranjan G, Ellis AK, Siegel JA, Diamond ML. 2021. Indoor exposure to phthalates and polycyclic aromatic hydrocarbons (PAHs) to Canadian children: The Kingston allergy birth cohort. Journal of Exposure Science and Environmental Epidemiology, 32, 69-81. DOI: 10.1038/s41370-021-00310-y | Summary | Indoor Chemistry

Mahdavi A, Dingle J, Chan AWH, Siegel JA. 2021. HVAC filtration of particles and trace metals: Airborne measurements and the evaluation of quantitative filter forensics. Environmental Pollution, 271, 116388. DOI: 10.1016/j.envpol.2020.116388 | Summary | Filter Forensics

Mahdavi A, Siegel JA. 2021. Quantitative filter forensics: Size distribution and particulate matter concentrations in residential buildings. Indoor Air, 31(4), 1050-1060. DOI: 10.1111/ina.12782 | Summary | Filter Forensics

Li T, Siegel JA. 2021. Assessing the impact of filtration systems in indoor environments with effectiveness. Building and Environment, 87, 107389. DOI: 10.1016/j.buildenv.2020.107389 | Summary | Residential HVAC Systems

Vakalis D, Lepine C, MacLean HL, Siegel JA. 2021. Can green schools influence academic performance? Critical Reviews in Environmental Science and Technology, 51(13), 1354Ð1396. DOI: 10.1080/10643389.2020.1753631 | Summary | IEQ and School Performance

Rajagopalan S, Brauer B, Bhatnagar A, Bhatt DL, Brook JR, Huang W, MŸnzel T, Newby D, Siegel JA, Brook RD. 2020. Personal-level protective actions against particulate matter air pollution exposure: A scientific statement from the American heart association. Circulation, 142(23), e411-431. DOI: 10.1161/CIR.0000000000000931 | Summary | Indoor Air Quality

Newman et al. (23 authors). 2020. Cardiopulmonary impact of particulate air pollution in high-risk populations. Journal of the American College of Cardiology, 26, 2878-2894. DOI: 10.1016/j.jacc.2020.10.020 | Summary | Indoor Air Quality

Afshari A, Ekberg L, Forejt L, Mo J, Rahimi S, Siegel J, Chen W, Wargocki P, Zurami S, Zhang J. 2020. Electrostatic precipitators as an indoor air cleaner Ð A literature review. Sustainability, 12(21), 8774. DOI: 10.3390/su12218774 | Summary | Filtration Performance

Matava C, Collard V, Siegel J, Denning S, Li T, Du B, Fiadjoe J, Fiset P, Engelhardt T. 2020. Use of a high-flow extractor to reduce aerosol exposure in tracheal intubation. British Journal of Anaesthesia, 125, E363-366. DOI: 10.1016/j.bja.2020.07.014 | Summary | Operating Room Ventilation

Du B, Tandoc M, Mack M, Siegel JA. 2020. Indoor CO2 concentrations and cognitive function: A critical review. Indoor Air, 30(6), 1067-1082. DOI: 10.1111/ina.12706 | Summary | IEQ and Cognitive Function

Mahdavi A, Siegel JA. 2020. Extraction of dust collected in HVAC filters for quantitative filter forensics. Aerosol Science and Technology, 54(11), 1282-1292. DOI: 10.1111/ina.12782 | Summary | Filter Forensics

Zhang Y, Li T, Siegel JA. 2020. Investigating the impact of filters on long-term particle concentration measurements in residences (RP-1649). Science and Technology for the Built Environment, 26(8), 1037-1047. DOI: 10.1080/23744731.2020.1778402 | Summary | Filtration Performance

Haines SR, Siegel JA, Dannemiller KC. 2020. Modeling microbial growth in carpet dust exposed to diurnal variations in relative humidity using the "time-of-wetness". Indoor Air, 30(5), 978-992. DOI: 10.1111/ina.12686 | Summary | Indoor Microbiome

Wan Y, Diamond ML, Siegel JA. 2020. Elevated concentrations of semivolatile organic compounds in social housing multiunit residential building apartments. ES&T Letters, 7(3), 191-197. DOI: 10.1021/acs.estlett.0c00068 | Summary | IEQ in Social Housing

Li T, Siegel JA. 2020. Laboratory performance of new and used residential HVAC filters: Comparison to field results (RP-1649). Science and Technology for the Built Environment, 26(6), 844-855. DOI: 10.1080/23744731.2020.1738871 | Summary | Filtration Performance

Bakker A, Siegel JA, Mendell MJ, Prussin A, Marr L, Peccia J. 2020. Bacterial and fungal ecology on air conditioning cooling coils is influenced by climate and building factors. Indoor Air, 30(3), 326-334. DOI: 10.1111/ina.12632 | Summary | Indoor Microbiome

Li T, Siegel JA. 2020. In-situ efficiency of filters in residential central HVAC systems. Indoor Air, 30(2), 315-325. DOI: 10.1111/ina.12633 | Summary | Filtration Performance

Alavy M, Li T, Siegel JA. 2020. Energy use in residential buildings: Analyses of high-efficiency filters and HVAC fans. Energy & Buildings, 209, Article 109697. DOI: 10.1016/j.enbuild.2019.109697 | Summary | Residential HVAC Systems

Alavy M, Siegel JA. 2020. In-situ effectiveness of residential HVAC filters. Indoor Air, 30(1), 156-166. DOI: 10.1111/ina.12617 | Summary | Filtration Performance

Young CJ, Zhou S, Siegel JA, Kahan T. 2019. Illuminating the dark side of indoor oxidants. Environmental Science: Processes & Impacts, 21, 1229-1239. DOI: 10.1039/C9EM00111E | Summary | Indoor Chemistry

Hems R, Wang C, Collins D, Zhou S, Borduas-Dedekind N, Siegel JA, Abbatt J. 2019. Sources of isocyanic acid (HNCO) indoors: A focus on cigarette smoke. Environmental Science: Processes & Impacts, 21, 1334-1341. DOI: 10.1039/C9EM00107G | Summary | Indoor Chemistry

Li T, Alavy M, Siegel JA. 2019. Measurement of residential HVAC runtime. Building and Environment, 150, 99-107. DOI: 10.1016/j.buildenv.2019.01.004 | Summary | Residential HVAC Systems

Vakalis D, Touchie M, Tzekova E, MacLean HL, Siegel JA. 2019. Indoor environmental quality perceptions of social housing residents. Building and Environment, 150, 135-143. DOI: 10.1016/j.buildenv.2018.12.062 | Summary | IEQ in Social Housing

Givehchi R, Maestre JP, Bi C, Wylie G, Xu Y, Kinney K, Siegel JA. 2019. Quantitative filter forensics with residential HVAC filters to assess indoor concentrations. Indoor Air, 29(3), 390-402. DOI: 10.1111/ina.12536 | Summary | Filter Forensics

Alavy M, Siegel JA. 2019. IAQ and energy implications of high efficiency filters in residential buildings: A review (RP-1649). Science and Technology for the Built Environment, 25(3), 261-271. DOI: 10.1080/23744731.2018.1526012 | Summary | Filtration Performance

Alavy M, Li T, Siegel JA. 2019. Exploration of a long-term measurement approach for air exchange rate. Building and Environment, 144, 474-481. DOI: 10.1016/j.buildenv.2018.08.051 | Summary | Signal Processing and Ventilation

Bi C, Maestre JP, Li H, Zhang G, Givehchi R, Mahdavi A, Kinney K, Siegel JA, Horner S, Xu Y. 2018. Phthalates and organophosphates in settled dust and HVAC filter dust of U.S. low-income homes: Association with season, building characteristics, and childhood asthma. Environment International, 121, 916-930. DOI: 10.1016/j.envint.2018.09.013 | Summary | Filter Forensics

Collins D, Hems R, Zhou S, Alavy M, Siegel JA, Abbatt J. 2018. Evidence for gas-surface equilibrium control of indoor nitrous acid. Environmental Science & Technology, 52(21), 12419-12427. DOI: 10.1021/acs.est.8b04512 | Summary | Indoor Chemistry

Diaz Lozano Patiño E, Vakalis D, Touchie M, Tzekova E, Siegel JA. 2018. Thermal comfort in multi-unit social housing buildings. Building and Environment, 144, 230-237. DOI: 10.1016/j.buildenv.2018.08.024 | Summary | IEQ in Social Housing

Touchie M, Siegel JA. 2018. Residential HVAC runtime from smart thermostats: Characterization, comparison, and impacts. Indoor Air, 28(6), 905-915. DOI: 10.1111/ina.12496 | Summary | Residential HVAC Systems

Bakker A, Siegel JA, Mendell MJ, Peccia J. 2018. Building and environmental factors that influence bacterial and fungal loading on air conditioning cooling coils. Indoor Air, 28(5), 689-696. DOI: 10.1111/ina.12474 | Summary | Indoor Microbiome

Diaz Lozano Patiño E, Siegel JA. 2018. Indoor environmental quality in social housing: A literature review. Building and Environment, 131, 231-241. DOI: 10.1016/j.buildenv.2018.01.013 | Summary | IEQ in Social Housing

Maestre JP, Jennings W, Wylie G, Horner S, Siegel JA, Kinney K. 2018. Filter forensics: Microbiome recovery from residential HVAC filters. Microbiome, 6, 22. DOI: 10.1186/s40168-018-0407-6 | Summary | Filter Forensics

Thompson et al. and The Earth Microbiome Project Consortium (Siegel, J., member). 2017. A communal catalogue reveals earth's multiscale microbial diversity. Nature, 551, 457-463. DOI: 10.1038/nature24621 | Indoor Microbiome

Lax et al. (21 authors). 2017. Bacterial colonization and succession in a newly opened hospital. Science Translational Medicine, 9(391), 1-11. DOI: 10.1126/scitranslmed.aah6500 | Summary | Indoor Microbiome

Haaland D, Siegel JA. 2017. Quantitative filter forensics for indoor particle sampling. Indoor Air, 27(2), 364-376. DOI: 10.1111/ina.12319 | Summary | Filter Forensics

Adams R, Bhangar B, Dannemiller K, Eisen J, Fierer N, Gilbert J, Green J, Marr L, Miller S, Siegel JA, Stephens BR, Waring MS, Bibby K. 2016. Ten questions concerning the microbiomes of buildings. Building and Environment, 109, 224-234. DOI: 10.1016/j.buildenv.2016.09.001 | Summary | Indoor Microbiome

Chase J, Fouquier J, Zare M, Sonderegger D, Knight R, Kelley S, Siegel JA, Caporaso, JG. 2016. Geography and location are the primary drivers of office microbiome composition. mSystems, 1(2), e00022-16. DOI: 10.1128/mSystems.00022-16 | Summary | Indoor Microbiome

Zaatari M, Novoselac A, Siegel JA. 2016. Impact of ventilation and filtration strategies on energy consumption and exposures in retail stores. Building and Environment, 100, 186-196. DOI: 10.1016/j.buildenv.2016.01.026 | Summary | Filtration Performance

Siegel JA. 2016. Keynote: Primary and secondary consequences of indoor air cleaners. Indoor Air, 26(1), 88-96. DOI: 10.1111/ina.12194 | Summary | Filtration Performance

Aldred J, Darling E, Morrison GC, Siegel JA, Corsi RL. 2016. Analysis of the cost effectiveness of combined particle and activated carbon filters for indoor ozone removal in buildings (RP-1491). Science and Technology for the Built Environment, 22(2), 227-236. DOI: 10.1080/23744731.2016.1122500 | Summary | Filtration Performance

Hoisington A, Maestre JP, Kinney KA, Siegel JA. 2016. Characterizing the bacterial communities in retail stores in the United States. Indoor Air, 26(6), 857-868. DOI: 10.1111/ina.12273 | Summary | Indoor Microbiome

Khurshid S, Siegel JA, Kinney KA. 2016. Particulate reactive oxygen species on total suspended particles - Measurements in residences in Austin, Texas. Indoor Air, 26(6), 953-963. DOI: 10.1111/ina.12269 | Summary | Indoor Chemistry

Aldred J, Darling E, Morrison GC, Siegel JA, Corsi RL. 2016. Benefit-cost analysis of commercially available activated carbon filters for indoor ozone removal in single-family homes. Indoor Air, 26(3), 501-512. DOI: 10.1111/ina.12220 | Summary | Filtration Performance

Dedesko S, Siegel JA. 2015. Moisture parameters and fungal communities associated with gypsum drywall in buildings. Microbiome, 3, 71. DOI: 10.1186/s40168-015-0137-y | Summary | Indoor Microbiome

Dedesko S, Stephens BR, Gilbert JA, Siegel JA. 2015. Methods to assess human occupancy and occupant activity in hospital patient rooms. Building and Environment, 90, 136-145. DOI: 10.1016/j.buildenv.2015.03.029 | Summary | Indoor Air Quality

Gall E, Siegel JA, Corsi RL. 2015. Modeling ozone removal to indoor materials, including the effects of porosity, pore diameter, and thickness. Environmental Science and Technology, 49, 4398-4406. DOI: 10.1021/acs.est.5b00023 | Indoor Chemistry

Ramos T, Dedesko S, Siegel JA, Gilbert JA, Stephens BR. 2015. Spatial and temporal variations in indoor environmental conditions, human occupancy, and operational characteristics in a new hospital environment. PLoS ONE, 10(3), e0118207. DOI: 10.1371/journal.pone.0118207 | Indoor Air Quality

Xu Y, Liang Y, Urquidi J, Siegel JA. 2015. Semi-volatile organic compounds in HVAC filter dust in retail stores. Indoor Air, 25(1), 79-92. DOI: 10.1111/ina.12123 | Filter Forensics

Nirlo E, Crain N, Corsi RL, Siegel JA. 2015. Field evaluation of five VOC measurement techniques: Implications for green building decision making. Science and Technology for the Built Environment, 21(1), 67-79. DOI: 10.1080/10789669.2014.969172 | Indoor Air Quality

Khurshid S, Siegel JA, Kinney KA. 2014. Technical note: Particulate reactive oxygen species concentrations and their association with environmental conditions in an urban, subtropical climate. Atmospheric Chemistry and Physics, 14(13), 6777-6784. DOI: 10.5194/acp-14-6777-2014 | Indoor Chemistry

Hoisington A, Maestre JP, Siegel JA, Kinney KA. 2014. Impact of sampler selection on the characterization of the indoor microbiome via high-throughput sequencing. Building and Environment, 80, 274-282. DOI: 10.1016/j.buildenv.2014.04.021 | Indoor Microbiome

Khurshid S, Siegel JA, Kinney KA. 2014. Indoor particulate reactive oxygen species concentrations. Environmental Research, 132, 46-53. DOI: 10.1016/j.envres.2014.03.026 | Indoor Chemistry

Gall ET, Corsi RL, Siegel JA. 2014. Impact of physical properties on ozone removal to several porous materials. Environmental Science and Technology, 48(7), 3682-3690. DOI: 10.1021/es4051956 | Indoor Chemistry

Xu Y, Liang Y, Urquidi J, Siegel JA. 2014. Phthalates and polybrominated diphenyl ethers in retail stores. Atmospheric Environment, 87, 53-64. DOI: 10.1016/j.atmosenv.2014.01.019 | Indoor Air Quality

Nirlo E, Crain N, Corsi RL, Siegel JA. 2014. Volatile organic compounds in fourteen U.S. retail stores. Indoor Air, 24(5), 484-494. DOI: 10.1111/ina.12101 | Indoor Air Quality

Zaatari M, Novoselac A, Siegel JA. 2014. The relationship between filter pressure drop, indoor air quality, and energy consumption in rooftop HVAC units. Building and Environment, 73, 151-161. DOI: 10.1016/j.buildenv.2013.12.010 | Filtration Performance

Zaatari M, Siegel JA. 2014. Particle characterization in retail environments: Concentrations, sources, and removal mechanisms. Indoor Air, 24(4), 350-361. DOI: 10.1111/ina.12088 | Indoor Air Quality

Zaatari M, Nirlo E, Jareemit D, Crain N, Srebric J, Siegel JA. 2014. Ventilation and indoor air quality in retail stores: A critical review (RP-1596). HVAC&R Research, 20(2), 276-294. DOI: 10.1080/10789669.2013.869126 | Indoor Air Quality

Hoisington A, Maestre JP, Siegel JA, Kinney, KA. 2014. Exploring the microbiome of the built environment: A primer on four biological methods available to building professionals. HVAC&R Research, 20(1), 167-175. DOI: 10.1080/10789669.2013.840524 | Indoor Microbiome

Taylor-Lange S, Juenger M, Siegel JA. 2014. Radon emanation fractions from concretes containing fly ash and metakaolin. Science of the Total Environment, 466-467, 1060-1065. DOI: 10.1016/j.scitotenv.2013.08.005 | Indoor Air Quality

Shogan B, Smith D, Packman A, Kelley S, Landon E, Bhangar S, Vora G, Jones R, Keegan K, Stephens BR, Ramos T, Kirkup B, Levin H, Rosenthal M, Foxman B, Chang E, Siegel JA, Cobey S, An G, Alverdy J, Olsiewski P, Martin M, Marrs R, Hernandez M, Christley S, Morowitz M, Weber S. 2013. The hospital microbiome project: Meeting report for the 2nd hospital microbiome project, Chicago, USA, January 15th, 2013. Standards in Genomic Sciences, 8(3), 571-579. DOI: www.ncbi.nlm.nih.gov/pmc/articles/PMC3910697/ | Indoor Microbiome

Gall, E, Darling E, Siegel JA, Morrison GC, Corsi, RL. 2013. Evaluation of several green building materials for ozone removal, primary and secondary emissions. Atmospheric Environment, 77, 910-918. DOI: 10.1016/j.atmosenv.2013.06.014 | Indoor Chemistry

Waring MS, Siegel JA. 2013. Secondary organic aerosol formation from reactions between ozone and surface-sorbed d-limonene. Environmental Science and Technology, 47(12), 6341-6348. DOI: 10.1021/es400846d | Indoor Chemistry

Stephens BR, Siegel JA. 2013. Ultrafine particle removal by residential HVAC filters. Indoor Air, 23(6), 488-497. DOI: 10.1111/ina.12045 | Filtration Performance

Boor B, Siegel JA, Novoselac A. 2013. Wind tunnel study on aerodynamic particle resuspension from monolayer and multilayer deposits on indoor surfaces. Aerosol Science and Technology, 47(8), 848-857. DOI: 10.1080/02786826.2013.794929 | Indoor Air Quality

Boor B, Siegel JA, Novoselac A. 2013. Monolayer and multilayer particle deposits on hard surfaces: Literature review and implications for particle resuspension in the indoor environment. Aerosol Science and Technology, 47(8), 831-847. DOI: 10.1080/02786826.2013.794928 | Indoor Air Quality

Taylor-Lange S, Juenger MCG, Siegel JA. 2013. Technical note: Impact of cement renders on airborne ozone and carbon dioxide concentrations Atmospheric Environment, 70, 263-266. DOI: 10.1016/j.atmosenv.2013.01.034 | Indoor Air Quality

Smith D, Alverdy J, Gilbert J, Coleman M, Garcia-Houchins S, Green J, Keegan K, Kelley S, Kirkup B, Kociolek L, Levin H, Landon E, Olsiewski P, Knight R, Siegel JA Weber S, Gilbert JA. 2013. The hospital microbiome project: Meeting report for the 1st hospital microbiome project workshop on sampling design and building science measurements, Chicago, USA, June 7th-8th 2012. Standards in Genomic Sciences, 8(1), 112-117. DOI: www.ncbi.nlm.nih.gov/pmc/articles/PMC3739179/ | Indoor Microbiome

Stephens BR, Siegel JA. 2012. Penetration of ambient submicron particles into single-family residences: Associations with building characteristics. Indoor Air, 22(6), 501-513. DOI: 10.1111/j.1600-0668.2012.00779.x | Indoor Air Quality

Taylor-Lange S, Stewart J, Juenger MCG, Siegel JA. 2012. The contribution of fly ash toward indoor radon pollution from concrete. Building and Environment, 56, 276-282. DOI: 10.1016/j.buildenv.2012.03.009 | Indoor Air Quality

Cros C, Morrison GC, Siegel JA, Corsi RL. 2012. Long-term performance of passive materials for removal of ozone from indoor air. Indoor Air, 22(1), 45-53. DOI: 10.1111/j.1600-0668.2011.00734.x | Indoor Chemistry

Stephens BR, Gall ET, Siegel JA. 2012. Measuring the penetration of ambient ozone into residential buildings. Environmental Science and Technology, 46(2), 929-936. DOI: 10.1021/es2028795 | Indoor Chemistry

Stephens BR, Siegel JA. 2012. Comparison of test methods for determining particle removal efficiency of filters in residential and light-commercial central HVAC systems. Aerosol Science and Technology, 46(5), 504-513. DOI: 10.1080/02786826.2011.642825 | Filtration Performance

Stephens BR, Novoselac A, Siegel JA. 2011. Operation characteristics of residential and light-commercial air-conditioning systems in a hot and humid climate zone. Building and Environment, 46(10), 1972-1983. DOI: 10.1016/j.buildenv.2011.04.005 | Residential HVAC Systems

Hun DE, Corsi RL, Morandi MT, Siegel JA. 2011. Automobile proximity and indoor residential concentrations of BTEX and MTBE. Building and Environment, 46(1), 45-53. DOI: 10.1016/j.buildenv.2010.06.015 | Indoor Air Quality

Waring MS, Wells, JR, Siegel JA. 2011. Secondary organic aerosol formation from ozone reactions with single terpenoids and terpenoid mixtures. Atmospheric Environment, 45(25), 4235-4242. DOI: 10.1016/j.atmosenv.2011.05.001 | Indoor Chemistry

Waring MS, Siegel JA. 2011. Indoor air quality implications of using ion generators in residences. Indoor Air, 21(4), 267-276. DOI: 10.1111/j.1600-0668.2010.00696.x | Indoor Chemistry

Gall ET, Corsi R, Siegel JA. 2011. Barriers and opportunities for passive removal of indoor ozone. Atmospheric Environment, 45(19), 3338-3341. DOI: 10.1016/j.atmosenv.2011.03.032 | Filtration Performance

Noris F, Siegel JA, Kinney KA. 2011. Evaluation of HVAC filters as a sampling mechanism for indoor microbial communities. Atmospheric Environment, 45(2), 338-346. DOI: 10.1016/j.atmosenv.2010.10.017 | Filter Forensics

Peschiera G, Taylor JT, Siegel JA. 2010. Response-relapse patterns of building occupant electricity consumption following exposure to personal, contextualized and occupant peer network utilization data. Energy and Buildings, 12(8), 1329-1336. DOI: 10.1016/j.enbuild.2010.03.001 | Building Energy

Waring MS, Siegel JA. 2010. The influence of HVAC systems on indoor secondary organic aerosol formation. ASHRAE Transactions, 116(1), 556-571. | Indoor Chemistry

Hun DE, Corsi RL, Morandi MT, Siegel JA. 2010. Formaldehyde in residences: Long-term indoor concentrations and influencing factors. Indoor Air, 20(3), 196-203. | Indoor Air Quality

Stephens BR, Novoselac A, Siegel JA. 2010. Energy implications of filters in residential and light-commercial buildings. ASHRAE Transactions, 116(1), 346-357. | Filtration Performance

Stephens BR, Novoselac A, Siegel JA. 2010. The effects of filtration on pressure drop and energy consumption in residential HVAC systems. HVAC&R Research, 16(3), 273-294. | Filtration Performance

Kunkel DA, Gall ET, Siegel JA, Novoselac A, Morrison GC, Corsi RL. 2010. Passive reduction of human exposure to indoor ozone. Building and Environment, 45(2), 445-452. DOI: 10.1016/j.buildenv.2009.06.024 | Indoor Chemistry

Hun DE, Siegel JA, Morandi MT, Stock TH, Corsi RL. 2009. Cancer risk disparities between Hispanic and non-Hispanic white populations: The role of exposure to indoor air pollution. Environmental Health Perspectives, 117(12), 1925-1931. DOI: 10.1289/ehp.0900925 | Indoor Air Quality

Noris, F, Siegel JA, Kinney KA. 2009. Biological and chemical contaminants in HVAC filter dust. ASHRAE Transactions, 115(2), 484-491. | Filter Forensics

Mukai, C, Siegel JA, Novoselac A. 2009. Impact of airflow characteristics on particle resuspension from indoor surfaces. Aerosol Science and Technology, 43(10), 1022-1032. DOI: 10.1080/02786820903131073 | Indoor Air Quality

Novoselac A, Siegel JA. 2009. Impact of placement of portable air cleaning devices in multizone residential environments. Building and Environment, 44(12), 2348-2356. DOI: 10.1016/j.buildenv.2009.03.023 | Filtration Performance

Chojnowski DB, Nigro PJ, Siegel JA, Kosar DA. 2009. Laboratory measurements to quantify the effect of bypass on filtration efficiency. ASHRAE Transactions, 115(1), 191-198. | Filtration Performance

VerShaw JR, Siegel JA, Chojnowski DB, Nigro PJ. 2009. Implications of filter bypass. ASHRAE Transactions, 115(1), 199-207. | Filtration Performance

Rim D, Siegel JA, Spinhirine J, Webb A, McDonald-Buller E. 2008. Characteristics of cabin air quality in school buses in central Texas. Atmospheric Environment, 42(26), 6453-6464. DOI: 10.1016/j.atmosenv.2008.04.030 | Indoor Air Quality

Waring MS, Siegel JA, Corsi RL. 2008. Ultrafine particle removal and generation by portable air cleaners. Atmospheric Environment, 42(20), 5003-5014. DOI: 10.1016/j.atmosenv.2008.02.011 | Filtration Performance

Waring MS, Siegel JA. 2008. Particle loading rates for HVAC filters, heat exchangers, and ducts. Indoor Air, 18(3), 209-224. DOI: 10.1111/j.1600-0668.2008.00518.x | Filtration Performance

Corsi RL, Siegel JA, Chiang C. 2008. Particle resuspension during the use of vacuum cleaners on residential carpet. Journal of Occupational and Environmental Hygiene, 5(4), 232-238. DOI: 10.1080/15459620801901165 | Indoor Air Quality

Waring MS, Siegel JA. 2007. An evaluation of the indoor air quality in bars before and after a smoking ban in Austin, TX. Journal of Exposure Analysis and Environmental Epidemiology, 17, 260-268. DOI: 10.1038/sj.jes.7500513 | Indoor Air Quality

Zhao P, Siegel JA, Corsi, RL. 2007. Ozone removal by HVAC filters. Atmospheric Environment, 41(15), 3151-3160. DOI: 10.1016/j.atmosenv.2006.06.059 | Indoor Chemistry

Corsi RL, Siegel JA, Karamalegos A, Simon H, Morrison GC. 2007. Personal reactive clouds: Introducing the concept of near head chemistry. Atmospheric Environment, 41(15), 3161-3165. DOI: 10.1016/j.atmosenv.2006.07.054 | Indoor Chemistry

Francisco P, Siegel JA, Palmiter L, Davis B. 2006. Measuring residential duct efficiency with the short-term coheat test methodology. Energy and Buildings, 38(9), 1076-1083. DOI: 10.1016/j.enbuild.2005.12.008 | Building Energy

Ward M, Siegel JA, Corsi RL. 2005. The effectiveness of stand alone air cleaners for shelter-in-place. Indoor Air, 15(2), 127-134. DOI: 10.1111/j.1600-0668.2004.00326.x | Filtration Performance

Ward M, Siegel JA. 2005. Filter bypass: Implications for filter efficiency. ASHRAE Transactions, 111(2), 1091-1100. | Filtration Performance

Siegel JA, Nazaroff WW. 2003. Predicting particle deposition on HVAC heat exchangers. Atmospheric Environment, 37(39-40), 5587-5596. DOI: 10.1016/j.atmosenv.2003.09.033 | Indoor Air Quality

Siegel JA, McWilliams J, Walker I. 2003. Comparison between predicted duct effectiveness from proposed ASHRAE Standard 152P and measured field data for residential forced air cooling systems. ASHRAE Transactions, 109(1), 503-512. | Building Energy

Siegel JA, Wray CP. 2002. An evaluation of refrigerant charge diagnostics for commissioning residential cooling systems. ASHRAE Transactions, 108(2), 965-975. | Building Energy

Courses Taught