{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HEPA+Air+Filtration",
    "query": {
      "intervention": "HEPA Air Filtration"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 18,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HEPA+Air+Filtration&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-14T21:37:31.169Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT07116460",
      "title": "Cost Effective Air Filtration Intervention in Low-Income Housing to Reduce Asthma Morbidity",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma Attack",
        "Lung Function",
        "Airway Inflammation"
      ],
      "interventions": [
        {
          "name": "Austin Air Cleaner",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "7 Years to 18 Years"
      },
      "enrollment_count": 55,
      "start_date": "2026-01-30",
      "completion_date": "2028-04",
      "has_results": false,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07116460"
    },
    {
      "nct_id": "NCT04279249",
      "title": "Home Air Filtration for Traffic-Related Air Pollution",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Risk Factor",
        "Blood Pressure"
      ],
      "interventions": [
        {
          "name": "HEPA Air Filtration",
          "type": "OTHER"
        },
        {
          "name": "Sham HEPA Air Filtration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "UConn Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 156,
      "start_date": "2020-11-15",
      "completion_date": "2024-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-11-01",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "Farmington, Connecticut",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04279249"
    },
    {
      "nct_id": "NCT05718245",
      "title": "HEPA, PM2.5, and Cardiometabolic Health",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Air Pollution",
        "Cardiometabolic Health"
      ],
      "interventions": [
        {
          "name": "HEPA filter",
          "type": "DEVICE"
        },
        {
          "name": "Sham filter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "65 Years to 84 Years"
      },
      "enrollment_count": 52,
      "start_date": "2023-03-15",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-01",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05718245"
    },
    {
      "nct_id": "NCT04013256",
      "title": "Controlled Exposure of Healthy Nonsmokers to Secondhand and Thirdhand Cigarette Smoke",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pollution; Exposure",
        "Smoke Inhalation",
        "Exposure to Pollution"
      ],
      "interventions": [
        {
          "name": "Cigarette Smoke",
          "type": "OTHER"
        },
        {
          "name": "Clean Air and Clean Clothing/Sham exposure",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 66,
      "start_date": "2020-01-20",
      "completion_date": "2024-10-31",
      "has_results": false,
      "last_update_posted_date": "2023-08-28",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04013256"
    },
    {
      "nct_id": "NCT05379400",
      "title": "Cleaner Air for Better Cardiac Biomarkers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Portable air cleaner (PAC)",
          "type": "OTHER"
        },
        {
          "name": "Sham Portable air cleaner (PAC)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 48,
      "start_date": "2022-08-11",
      "completion_date": "2023-08-24",
      "has_results": true,
      "last_update_posted_date": "2024-12-06",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05379400"
    },
    {
      "nct_id": "NCT05953233",
      "title": "School Inner City Air Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Viral Infection"
      ],
      "interventions": [
        {
          "name": "Active classroom HEPA cleaner",
          "type": "OTHER"
        },
        {
          "name": "Sham classroom HEPA cleaner",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "6 Years to 90 Years"
      },
      "enrollment_count": 200,
      "start_date": "2024-09-15",
      "completion_date": "2030-08",
      "has_results": false,
      "last_update_posted_date": "2025-12-11",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05953233"
    },
    {
      "nct_id": "NCT04252235",
      "title": "Home Air Purification for Eosinophilic COPD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COPD",
        "Eosinophilia"
      ],
      "interventions": [
        {
          "name": "Air purifier",
          "type": "DEVICE"
        },
        {
          "name": "Sham air purifier",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Beth Israel Deaconess Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 178,
      "start_date": "2021-03-15",
      "completion_date": "2026-02-28",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04252235"
    },
    {
      "nct_id": "NCT05913765",
      "title": "Air Filtration for COPD in VA Population of Veterans",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "Air cleaner",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Illinois Institute of Technology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2023-01-11",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-10-23",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05913765"
    },
    {
      "nct_id": "NCT00839046",
      "title": "A Community-based Participatory Research (CBPR) Intervention for Childhood Asthma Using Air Filters and Air Conditioners",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Childhood Asthma"
      ],
      "interventions": [
        {
          "name": "Community Health Worker Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Air Filter",
          "type": "OTHER"
        },
        {
          "name": "Air Filter and Air Conditioner",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "6 Years to 12 Years"
      },
      "enrollment_count": 126,
      "start_date": "2007-08",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2017-07-24",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00839046"
    },
    {
      "nct_id": "NCT07196436",
      "title": "Asthma Intervention With Residential Ventilation and Air Cleaner (AIRVAC) Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma Control",
        "Pulmonary Function",
        "Quality of Life",
        "Stress",
        "Sleep Quality"
      ],
      "interventions": [
        {
          "name": "Energy Recovery Ventilator",
          "type": "DEVICE"
        },
        {
          "name": "Portable Air Cleaner",
          "type": "DEVICE"
        },
        {
          "name": "Energy Recovery Ventilator (Sham)",
          "type": "DEVICE"
        },
        {
          "name": "Portable Air Cleaner (Sham)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "The University of Texas at Arlington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2025-10-10",
      "completion_date": "2028-02-28",
      "has_results": false,
      "last_update_posted_date": "2025-10-29",
      "last_synced_at": "2026-09-14T21:37:31.169Z",
      "location_count": 2,
      "location_summary": "Arlington, Texas • Plano, Texas",
      "locations": [
        {
          "city": "Arlington",
          "state": "Texas"
        },
        {
          "city": "Plano",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07196436"
    }
  ]
}