ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,834, issued on July 15, was assigned to Research Products Corp. (Madison, Wis.).
"System and method for HVAC fan control" was invented by Wade Ferkey (Madison, Wis.) and Stephen Moon (Madison, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An HVAC system includes a first air quality sensor and a second air quality sensor. The system contains a controller which calculates a differential between the first air quality sensor and the second air quality sensor. The differential is compared to a threshold. If the threshold is satisfied, a fan is engaged which may, reducing the air quality differential as sensed by the first and second air quality sen...