In 2018 QuietCool announced a new line of whole house fans. The top performer is the ES-7000, said to pull 6,878 CFM at 727 watts. However, that number is in error according to the California Energy Commission. The CEC put out a mandate in late 2017 that caused all the suppliers in the US to report their true HVI-916 test results. All suppliers are now doing this but QuietCool is the only supplier of rafter mounted fans to continue to publish a higher value. However you now know that others like Triangle publish even more exaggerated performance.