Ventilation and filtration provided by heating, ventilating, and air-conditioning (HVAC) systems can reduce the airborne concentration of the virus that causes COVID-19 (SARS-CoV-2), which can reduce the risk of transmission through the air.

• Check to be sure your HVAC filter is correctly in place and consider upgrading the filter to the highest-rated filter that your system can accommodate (consult your HVAC manual or an HVAC professional for details).
• HVAC systems only filter the air when the fan is running, so run the system fan for longer times, or continuously. Many systems can be set to run the fan even when no heating or cooling is taking place.
• When used properly, air purifiers can help reduce airborne contaminants, including viruses, in a home or confined space.
• Improve ventilation with outside air to improve indoor air quality:
  • Open the windows, or screened doors, if possible.
  • Open the outdoor air intake or vent of your window air conditioner when in operation.
  • Operate a bathroom fan when the bathroom is in use or continuously, if possible.
  • Avoid these actions when outdoor air pollution is high or when it makes your home too cold, hot, or humid.
• Care should be taken with portable ventilation equipment such as fans, to minimize air blowing from one person directly at another person to reduce the potential spread of any airborne or aerosolized viruses.
• Running your HVAC system, using an air purifier or a portable air cleaner, and increasing ventilation are not enough to protect yourself and your family from COVID-19. Continue to follow other prevention guidelines.
• Use of ozone generators in occupied spaces is not recommended. They do not effectively remove viruses, bacteria, mold, or other biological pollutants when operated at concentrations within public health standards.

Bedroom and bathroom

Keep a separate bedroom and bathroom for a person who is sick

Keep a separate bedroom and bathroom for a person who is sick (if possible).

• The person who is sick should stay separated from other people in the home (as much as possible).
• If you have a separate bedroom and bathroom: Wear disposable gloves and only clean the area around the person who is sick when needed, such as when the area is soiled. This will help limit your contact with the person who is sick.
• If you don’t have a separate bedroom and bathroom: The person who is sick should clean and disinfect after each use. If this is not possible, the caregiver should wait as long as possible before cleaning and disinfecting.
• See precautions for household members and caregivers for more information.

Trash

Use disposable gloves when handling and disposing of trash

• Dedicated, lined trash can: If possible, dedicate a lined trash can for the person who is sick. Use disposable gloves when removing garbage bags, and handling and disposing of trash. Wash hands afterwards.

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Source: https://tools.cdc.gov/api/embed/downloader/download.asp?m=404952&c=415298