Portable air cleaners can provide additional protection against the spread of COVID-19 in small businesses, but it’s difficult for business owners to determine if an air cleaner will effectively ventilate their space. PACC is a web application based on research from air quality experts at Harvard University and University of Colorado Boulder that helps users find affordable and effective air cleaners. Sponsored by the Washington State Department of Commerce, our application lessens the burden on small businesses by providing a user-friendly website with a simplistic design. Our tool helps businesses operate safely and protects the health of employees and customers.