Performed Platinum Comfort Club Membership Tune-Up on Heating System Heat pump (4tons Bryan) Customer expressed that their electric bill is up to $500 dollars. System has only 700CFM of return with static pressure of 6.1”WC. On the return. System needs at least 700CFM more. In order to diagnose any issues with over charge or anything of that nature on the heat pump we need to address the airflow problem first. The repairs for additional return, new filter rack and better filtration ranges from 1,900 to 2,200. Customer has expressed that for now they will take no further specs toward repairs.