Because that requires tremendous capital and labor costs, overhauling HVAC in every private and public building would take years, there aren’t enough electricia

Because that requires tremendous capital and labor costs, overhauling HVAC in every private and public building would take years, there aren’t enough electricians and tinners/pipefitters. HVAC equipment is also very expensive and most public institutions have already budgeted for capital costs. Who will pay for it all?