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Air Quality Improvement Grants

The first round of applications closed on September 10th and award information was sent via email on October 1st. We are currently working on Grant Agreements and are aiming to distribute them the second week of November.

Per SB21-202, the Public School Capital Construction Assistance Board (CCAB) is authorized to award grants for acquisition, repair, maintenance or upgrading of portable high-efficiency particulate air (HEPA) fans or filtration systems for classrooms made on or after April 1, 2021. Funding is available for public school facilities, including school districts, charter schools, institute charter schools, boards of cooperative educational services, and the Colorado School for the Deaf and the Blind.

Air Quality Improvement (AQI) Grant Reimbursements: Now Being Accepted

Submit Reimbursement Request 

  • Districts and authorizers can now submit reimbursement requests for eligible items purchased on or after April 1, 2021
    • As a reminder, authorizers must submit reimbursement requests on behalf of their charter schools. Funds will be paid to the authorizer and then distributed to the charter school.
  • Reimbursements will be compiled by CDE’s Office of Capital Construction on the 10th of each month, beginning in November
  • The district is responsible for purchasing units or filters in accordance with the Grant Award Letter. Receipts are not required to be submitted.
  • All fund requests must be submitted by June 10, 2022 to be reimbursed prior to June 30, 2022
  • ​​​ Air Quality Improvement Grant Guidance (PDF)

Grant Guidance

Maximum grant awards were established using $700 per number of classrooms as applied for in the original application, unless otherwise decreased. Requests for filters only was funded in full. Districts may have been awarded more or less than their original request based on this calculation. Therefore the number and type of HEPA units or filters can shift from what was submitted in the original application, as long as they remain an eligible purchase as outlined in the grant agreement and reimbursement requests do not exceed the maximum grant award.

Eligible Purchases

Eligible expenses include the items listed below if purchased on or after April 1, 2021.

  • Portable HEPA filtration systems

  • Replacement filters for portable HEPA filtration systems

Ineligible Purchases

  • Units with ionizers are not eligible to be purchased with this grant

Additional Resources

CDC Guidance

Considerations Prior to Purchase

Portable HEPA fans and filtration systems remove at least 99.97% of dust, pollen, mold, bacteria, and any airborne particles with a size of 0.3 microns (µm), but is not a complete solution to mitigating risk of disease transmission. These should be used in conjunction with other mitigation efforts, such as masking, social distancing, hand washing and improved building ventilation systems.

  • Certification: Look for units with HEPA filters and ASHRAE certification
  • Sizing: Ensure the unit(s) you purchase is adequate for the square footage of each classroom. Larger spaces may need more than one unit. Use the calculator below to help determine needs.
  • Delivery Rate: Look for units with a clean air delivery rate of (CADR) 350-425 cubic feet per minute and AHAM verification
  • Noise: Look for quieter versions for less classroom disruption, such as units with a radial intake of air
  • Filter Replacement and Maintenance: Units include a filter that should be replaced and other maintenance may be required per the manufacturer’s recommendations.
  • Not Eligible: Units with ionizers are not eligible to be purchased with this grant

Estimation Tools

These tools are intended to simplify decision-making around portable air cleaners in schools for airborne transmission control.


For questions contact or 303-866-2153