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ClinicalTrials.gov public records Last synced Oct 21, 2026, 1:47 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 50 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Air Filter Clear all
Not yet recruiting Not applicable Interventional

Evaluation of a Novel Indoor Air Pollution Intervention Among Older Adults

NCT07539987
View directory record Official record
Conditions
Cardiovascular Diseases, Blood Pressure, Glycated Hemoglobin (HbA1c), Cholesterol, Cholesterol, HDL, Cholesterol, LDL, Indoor Air Quality, Particulate Matter, Health Behavior
Interventions
Air Improvement and Real-time Monitoring for Wellness through Interactive Strategies and Education (AIRWISE), Portable Air Cleaner (PAC) Control
Behavioral · Other
Lead sponsor
University of Montana
Other
Eligibility
55 Years to 79 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Oct 21, 2026, 1:47 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

HEPA, PM2.5, and Cardiometabolic Health

NCT05718245
View directory record Official record
Conditions
Air Pollution, Cardiometabolic Health
Interventions
HEPA filter, Sham filter
Device
Lead sponsor
University of Southern California
Other
Eligibility
65 Years to 84 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional Results available

Motivational Interviewing and Air Cleaners for Smokers With COPD (MOVE COPD)

NCT03658538
View directory record Official record
Conditions
COPD, Chronic Obstructive Pulmonary Disease
Interventions
Active HEPA Air Cleaner, Motivational interviewing, Sham Air Cleaner
Device · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
40 Years and older
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Traffic Pollution Exposure Improves Blood Pressure

NCT04029129
View directory record Official record
Conditions
Air Pollution
Interventions
Air filtration and building envelop modifications
Other
Lead sponsor
UConn Health
Other
Eligibility
40 Years to 75 Years
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional

Indoor Air Quality and Respiratory Symptoms in Former Smokers

NCT02956213
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
HEPA portable air filter, Sham Control/Active Comparator
Other
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
40 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 13, 2019 · Synced Oct 21, 2026, 1:47 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 26, 2026 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional

Developing and Evaluating an Indoor Air Pollution Intervention Among Cardiovascular Patients: the AIRWISE Study

NCT06384625
View directory record Official record
Conditions
Coronary Heart Disease, Cardiovascular Diseases, Environmental Exposure
Interventions
AIRWISE
Other
Lead sponsor
University of Montana
Other
Eligibility
55 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

School Inner-City Asthma Intervention Study (SICAS-2)

NCT02291302
View directory record Official record
Conditions
Asthma
Interventions
integrated pest management, air purifier, No intervention (control)
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 15 Years
Enrollment
236 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced Oct 21, 2026, 1:47 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 23, 2020 · Synced Oct 21, 2026, 1:47 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

ASPIRE Health Tulare County

NCT05944770
View directory record Official record
Conditions
Respiratory Tract Diseases, Cardiovascular Diseases
Interventions
DIY portable air cleaner with a highly effective filter, DIY portable air cleaner with sham filtration
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Oct 27, 2023 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional

Home Air Purification for Eosinophilic COPD

NCT04252235
View directory record Official record
Conditions
COPD, Eosinophilia
Interventions
Air purifier, Sham air purifier
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
40 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Oct 21, 2026, 1:47 AM EDT
Active, not recruiting Not applicable Interventional

AIRWEIGHS: Investigating Obesity as a Susceptibility Factor for Air Pollution in Childhood Asthma

NCT02763917
View directory record Official record
Conditions
Asthma
Interventions
Active Air Purifier, Placebo Air Purifier
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
8 Years to 17 Years
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 3, 2025 · Synced Oct 21, 2026, 1:47 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 Sep 1, 2026 · Synced Oct 21, 2026, 1:47 AM EDT
Recruiting Not applicable Interventional

Project 4: ACHIEVE PATHFINDER

NCT06070428
View directory record Official record
Conditions
Heart Failure
Interventions
PAC provision at hospital discharge, Control non-intervention; PAC without filter
Other
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional

Home Air Filtration for Traffic-Related Air Pollution

NCT04279249
View directory record Official record
Conditions
Cardiovascular Risk Factor, Blood Pressure
Interventions
HEPA Air Filtration, Sham HEPA Air Filtration
Other
Lead sponsor
UConn Health
Other
Eligibility
30 Years and older
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 1, 2024 · Synced Oct 21, 2026, 1:47 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 27, 2025 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Phase 3 Interventional

Indoor Woodsmoke PM and Asthma

NCT00807183
View directory record Official record
Conditions
Asthma
Interventions
woodstove, inactive air filter, Active air filter
Other
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
10 Years to 17 Years
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced Oct 21, 2026, 1:47 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 6, 2024 · Synced Oct 21, 2026, 1:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Commute Traffic on Vascular Function

NCT05454930
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Filtered Air
Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 49 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Oct 21, 2026, 1:47 AM EDT
Recruiting Not applicable Interventional

The Airports, Air Quality, and Asthma (AAA) Study

NCT07047430
View directory record Official record
Conditions
Pediatric Asthma
Interventions
Portable air cleaner with HEPA filter, Less effective portable air cleaner (no HEPA)
Device
Lead sponsor
University of Washington
Other
Eligibility
6 Years to 12 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Oct 21, 2026, 1:47 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 Jun 1, 2022 · Synced Oct 21, 2026, 1:47 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 22, 2022 · Synced Oct 21, 2026, 1:47 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 16, 2026 · Synced Oct 21, 2026, 1:47 AM EDT
Terminated Not applicable Interventional Results available

Pediatric Helmet CPAP Pilot Study

NCT04764929
View directory record Official record
Conditions
Bronchiolitis, Viral, Pneumonia, Viral, Pneumonia, Bacterial
Interventions
Helmet CPAP
Device
Lead sponsor
Columbia University
Other
Eligibility
1 Month to 5 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2024 · Synced Oct 21, 2026, 1:47 AM EDT