Southern California Edison has a $125 rebate for its customers when a new Quiet Cool Whole house fan is installed.
For the complete details please see the link below:
https://www.sce.com/wps/wcm/connect/050acdae-eb9c-4e4a-bde7-6cbdd4c63699/2018+HEER+Rebate+Pkg_Whole+House+Fan_WCAG.pdf?MOD=AJPERES&attachment=false&id=15270224713