TRIO Plus from Field Controls reduces viruses, bacteria, mold, and fungi to clean the air in a room up to 1,650 square feet, a 24’ x 44’ classroom, in 30 minutes.
Find K-12 funding at these links:
Leasing is available to qualified applicants!
The TRIO Plus air purifier combines Three state of the art air treatment processes into One powerful portable system. The TRIO Plus is quiet and efficient. The airflow of this 3-stage portable system boasts a remarkable Clean Air Delivery Rate (CADR) of 295 CFM. True HEPA filtration, high intensity UVC germicidal sterilization and PRO-Cell™ toxic gas reduction technologies combine to make the TRIO Plus a complete purification system for homes, schools, and added protection in any workplace.




Take the time to learn more by clicking here as many technologies being promoted are not 3rd Party Tested and some produce Ozone, which when inhaled can damage the lungs.
- Guidance for Schools – ASHRAE ,https://www.ashrae.org/file%20library/technical%20resources/covid-19/ashrae-reopening-schools-and-universities-c19-guidance.pdf
- Guidance for Building Operations During the COVID-19 Pandemic. https://www.ashrae.org/news/ashraejournal/guidance-for-building-operations-during-the-covid-19-pandemic


balfrey & johnston, inc. Serving the Construction Industry since 1959
Main Office: 13050 Northend Ave Oak Park, MI 48237 Phone: 313.864.2800
Satellite Offices in Grand Rapids – Mount Pleasant – Kalamazoo