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ClinicalTrials.gov public records Last synced Sep 12, 2026, 1:14 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Air Filter Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Bronchiolitis Recovery and the Use of High Efficiency Particulate Air (HEPA) Filters

NCT05615870
View directory record Official record
Conditions
Bronchiolitis
Interventions
Winix 5500-2 HEPA filtration units
Other
Lead sponsor
IDeA States Pediatric Clinical Trials Network
Network
Eligibility
1 Week to 12 Months
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
17
States / cities
Anchorage, Alaska • Little Rock, Arkansas • Honolulu, Hawaii + 14 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Sep 12, 2026, 1:14 AM EDT
Active, not recruiting Not applicable Interventional

Operating Room Air Filtration/Sterilization

NCT04610294
View directory record Official record
Conditions
Surgery
Interventions
Functioning Aerus air filtration/sterilization, Deactivated Aerus air filtration/sterilization
Device
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
66,273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Wood Stove Interventions and Child Respiratory Health

NCT02240134
View directory record Official record
Conditions
Lower Tract Respiratory Infection
Interventions
Education Intervention (Tx1), Air Filtration Unit Treatment (Tx2), Placebo Intervention (Tx3)
Behavioral · Device
Lead sponsor
University of Montana
Other
Eligibility
Up to 5 Years
Enrollment
523 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Jun 21, 2022 · Synced Sep 12, 2026, 1:14 AM EDT
Active, not recruiting Not applicable Interventional

Air Filtration for COPD in VA Population of Veterans

NCT05913765
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Air cleaner
Device
Lead sponsor
Illinois Institute of Technology
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 22, 2024 · Synced Sep 12, 2026, 1:14 AM EDT
Recruiting Not applicable Interventional

Action Towards Health Equity and Improved Air Quality in the Duwamish Valley: A Multilevel Asthma Intervention

NCT06552013
View directory record Official record
Conditions
Asthma in Children
Interventions
MERV 13 filter, Sham filter
Other
Lead sponsor
University of Washington
Other
Eligibility
6 Years to 17 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced Sep 12, 2026, 1:14 AM EDT
Not listed Not applicable Interventional

WoundVac in Obese Patients Undergoing Lumbar Surgery

NCT03688438
View directory record Official record
Conditions
Obesity, Lumbar Spine Surgery
Interventions
Closed-Incision Negative-Pressure Therapy
Device
Lead sponsor
Norton Leatherman Spine Center
Other
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 27, 2018 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Particulate Matter-associated Cardiovascular Health Effects for Seniors

NCT04103346
View directory record Official record
Conditions
Cardiometabolic Health
Interventions
air filtration with air purifier with hepa filter, sham
Other
Lead sponsor
University of Michigan
Other
Eligibility
60 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Recruiting Phase 3 Interventional

Multi-Center Clean Air Randomized Controlled Trial in COPD

NCT06376994
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Air cleaner, Sham air cleaner
Device
Lead sponsor
JHSPH Center for Clinical Trials
Other
Eligibility
40 Years and older
Enrollment
770 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
11
States / cities
Birmingham, Alabama • Los Angeles, California • Iowa City, Iowa + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional

Clinical Trial of Air Cleaners to Improve Indoor Air Quality and COPD Health

NCT02236858
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
HEPA Air Cleaner, Sham HEPA Air Cleaner
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
40 Years and older
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 13, 2021 · Synced Sep 12, 2026, 1:14 AM EDT
Recruiting Not applicable Interventional

Cost Effective Air Filtration Intervention in Low-Income Housing to Reduce Asthma Morbidity

NCT07116460
View directory record Official record
Conditions
Asthma Attack, Lung Function, Airway Inflammation
Interventions
Austin Air Cleaner
Device
Lead sponsor
Columbia University
Other
Eligibility
7 Years to 18 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Randomized Clinical Trial of the Application of TrachPhone HME and the Impact on Patient Satisfaction for Tracheostomized Head and Neck Cancer Patients

NCT07798414
View directory record Official record
Conditions
Patient Satisfaction, Pulmonary Rehabilitation
Interventions
TrachPhone Heat Moisture Exchange, Trach Collar
Device
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Wood Smoke Interventions in Native American Populations

NCT02240069
View directory record Official record
Conditions
Respiratory; Disorder, Functional, Impaired, Respiratory Infection Other
Interventions
Education (Tx1), Air Filtration Unit Treatment (Tx2), Placebo Intervention (Tx3)
Behavioral · Device
Lead sponsor
University of Montana
Other
Eligibility
55 Years and older
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Sep 12, 2026, 1:14 AM EDT
Not listed Not applicable Interventional

Indoor Air Quality Asthma Study: The Effect of Indoor Air Quality and Mitigation of Same on Persistent Asthma

NCT05843045
View directory record Official record
Conditions
Persistent Asthma
Interventions
Indoor Air Quality Mitigation
Device
Lead sponsor
Dayton Children's Hospital
Other
Eligibility
5 Years to 15 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 7, 2024 · Synced Sep 12, 2026, 1:14 AM EDT
Recruiting Not applicable Interventional

Reducing AIR Pollution Exposure to Lower Blood PRESSURE Among New York City Public Housing Residents

NCT05874479
View directory record Official record
Conditions
Blood Pressure
Interventions
Active PAC, Sham PAC
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
440 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Clean Air Study: HEPA Purifiers to Improve Indoor Air Quality and Health in Rural Alaska Homes

NCT06534385
View directory record Official record
Conditions
Air Pollution, Indoor
Interventions
Air purifier
Device
Lead sponsor
Alaska Native Tribal Health Consortium
Other
Eligibility
Up to 5 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Bethel, Alaska
Source: ClinicalTrials.gov public record
Updated Feb 26, 2025 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Environmental Intervention to Reduce Allergens in Urban Schools and Childhood Asthma

NCT01913795
View directory record Official record
Conditions
Asthma
Interventions
integrated pest management, air purifier, Sham air purifier
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 15 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 6, 2022 · Synced Sep 12, 2026, 1:14 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Aerodynamic Measurements in the Pediatric Population

NCT06975046
View directory record Official record
Conditions
Normal Voice
Interventions
Complete airflow interruption, Incomplete airflow interruption, Airflow redirection
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years to 65 Years
Enrollment
365 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
2
States / cities
Iowa City, Iowa • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Results available

Residential Cleaning of Indoor Air to Protect COPD Patients

NCT03750292
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
HEPAirX air filter, control air filter
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 31, 2022 · Synced Sep 12, 2026, 1:14 AM EDT
Not yet recruiting Phase 4 Interventional

The INTERvening for LUNG Health Trial

NCT07540000
View directory record Official record
Conditions
Spirometry
Interventions
Community health worker-delivered multi-component respiratory health intervention
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
9 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional

Indoor Air Pollution and Children With Asthma: An Intervention Trial

NCT02258893
View directory record Official record
Conditions
Asthma
Interventions
NO2 Scrubber, HEPA filter, Control
Other
Lead sponsor
Yale University
Other
Eligibility
5 Years to 11 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 22, 2020 · Synced Sep 12, 2026, 1:14 AM EDT
Terminated Not applicable Interventional Results available

Electronic Nose Identification of Fasting and Non-fasting Breath Profiles

NCT02419976
View directory record Official record
Conditions
Fasting
Interventions
a breath analysis using the Aeonose, Aeonose
Other · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
879 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Do Terpenes Play a Role in the Stress-reducing Effects of a Forest Bathing Intervention?

NCT05316597
View directory record Official record
Conditions
Monoterpene Exposure During a Forest Bathing Intervention
Interventions
Forest bathing
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Eatonville, Washington
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Results available

Cleaner Air for Better Cardiac Biomarkers

NCT05379400
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Portable air cleaner (PAC), Sham Portable air cleaner (PAC)
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Sep 12, 2026, 1:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

DRIIVE (Data and Research on Interventions to Improve the Vehicular Environment)

NCT02381626
View directory record Official record
Conditions
Vehicular Environment
Interventions
HEPA air purifier, questionnaires, Log-book, Urine sample
Device · Behavioral · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years to 90 Years · Male only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 4, 2021 · Synced Sep 12, 2026, 1:14 AM EDT