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Displaying 16 - 23 of 23 results

• What is Upper-Room Ultraviolet Germicidal Irradiation (UVGI)? What is HVAC UVGI? Can either be used to disinfect the air and help protect myself from COVID?

  A professionally designed system of ultraviolet germicidal irradiation (UVGI) that is well installed and maintained can effectively kill the virus that causes COVID-19 and help protect people from the disease indoors. Typically, UVGI systems are installed near a room ceiling (upper-room UVGI) or inside the HVAC system of a building…

  • Last published: December 5, 2024

• Is ventilation important for indoor air quality when cleaning and/or sanitizing for COVID-19 indoors?

  When cleaning and disinfecting for COVID-19, ventilation is important. Using EPA-registered cleaning and disinfecting products according to their label instructions is the best way to ensure that any indoor air pollution risks are reduced while still maintaining the effectiveness of the disinfecting product. In particular, follow any label precautions that…

  • Last published: May 6, 2024

• What is a DIY air cleaner, and can it help protect homes from COVID-19?

  Do-it-yourself (DIY) air cleaners are indoor air cleaners that can be assembled from box fans and square HVAC (or furnace) filters. A variety of designs exist, using a single fan and one to five air filters. In its simplest form, a single filter is attached to the front or back…

  • Last published: May 6, 2024

• What are the Units of Road Grade in the Links Table?

  See More Frequent Questions about MOVES and Related Models . The field road grade in the Links table should be entered as a percentage rather than a decimal fraction. In other words, a road grade of 4% should be entered in MOVES as 4, rather than 0.04.

  • Last published: July 10, 2024

• Is there HVAC guidance that building and maintenance professionals can follow to help protect from COVID-19?

  The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has developed proactive guidance to help address coronavirus disease 2019 (COVID-19) concerns with respect to the operation and maintenance of heating, ventilating and air-conditioning systems. Read ASHRAE guidance . The Centers for Disease Control and Prevention have also developed guidelines…

  • Last published: December 5, 2024

• Will running a window air conditioner help protect me and my family from COVID-19?

  Window air conditioners (AC) are used to cool specific indoor spaces and some may help in reducing airborne viruses if they have an outdoor air intake and/or a MERV-13 or better filter. Note that AC units that have outdoor air intakes are not common. If your window air conditioner has…

  • Last published: May 6, 2024

• What kind of filter should I use in my home HVAC system to help protect my family from COVID-19?

  Minimum Efficiency Reporting Values, or MERV, reports a filter's ability to capture particles. Filters with MERV-13 or higher ratings can trap smaller particles, including viruses. Many home HVAC systems will have a MERV-8 filter installed as the default. Upgrading to a MERV-13 rated filter, or the highest-rated filter that your…

  • Last published: August 27, 2024

• Can I measure carbon dioxide (CO2) indoors to get information on ventilation?

  Good ventilation is important to help protect people from COVID-19 and for healthy indoor environments in general. Carbon dioxide concentrations indoors can provide information about ventilation but need to be interpreted carefully. Additional Information: See CDC Ventilation FAQs for more information. See the ASHRAE Position Document on Indoor Carbon Dioxide…

  • Last published: December 5, 2024