In a year, air leakages can cost you a lot of money*. A 1/16 inch leak may cost you $523 (6.49 CFM) A 1/8 inch leak may cost you $2095 (26 CFM) A 1/4 inch leak may cost you $ 8382 (104 CFM) *Assumes $0.05 per kWh, constant operation, 100 psig. Legenda.