Having visitors in your home this winter? While opening windows can improve ventilation in your home during the visit, it might be too cold to do so comfortably. If possible, try cracking open a window for a little while. You can also take other steps to improve ventilation in your home, like upgrading your HVAC filter, running a HEPA purifier, and using your kitchen and bathroom exhaust fans. Taking steps to improve ventilation can reduce the number of COVID-19 particles in your home’s air. Check out the CDC’s new interactive tool to see how to prevent virus particles from accumulating in your home.