Abstract: The present disclosure provides systems and methods for collecting distributed information regarding air quality and air management system performance, and providing recommendations for affecting the air quality, the air management system, or individuals subject to or in control of either the air quality or the air management system.

Abstract: A method of monitoring the condition of an air filter installed in an HVAC system of a building unit. The method involves two-way wireless communication between a sensing unit that is mounted within the HVAC system and a geofencing-enabled app that is resident on a mobile device. Wireless signals between the sensing unit and the mobile device pass through an interior passage of ducting of the HVAC system with the interior passage of the ducting acting as a waveguide. The geofencing-enabled app is configured so that the app is triggered to open communication with the sensing unit upon the mobile device entering a geofencing boundary that is at least generally coincident with lateral boundaries of the building unit.

Abstract: Devices, systems and methods for obtaining data associated with air filter media of an air filter, and for using such data to generate an air filter recommendation, such as an indication of the air filter media condition to a user, an indication that the filter needs replacing, and/or a recommendation to use a different type of filter.