Cleaner Air for Better Cardiac Biomarkers

Inclusion Criteria: * Participant is ≥18 years old * Participant and members of household are reported to be non-smokers (defined as no household members are currently known to smoke cigarettes or use other tobacco products including e-cigarettes) * Participant is to understand/speak English or Spanish * Participant can understand study procedures and give informed consent * Participant has stable hypertension: no medication changes in prior 30 days, systolic BP \<160 mm Hg and either ≥ 130 mm Hg without antihypertensive medications, or diagnosis of hypertension in medical records * Able to measure home blood pressure twice daily * Able to participate in video conference for home equipment setup * Able to visit clinic for blood draws before and after the study period * Do not intend to sleep anywhere outside of primary bedroom for more than 48 consecutive hours or a total of 7 days during the study period. * Ability to lift, or access to assistance with lifting, 20 lb to set up PAC in bedroom. Exclusion Criteria: * Participants who are unable to provide a minimum of at least one blood pressure measurement per day * Participants with average home blood pressure monitor readings of a systolic blood pressure (SBP) \>160 mmHg over any 10-day period during the study. This will be considered evidence of uncontrolled hypertension and will require study termination. * Participants with known coronary artery disease * Participants with known systemic inflammatory conditions (such a…