Tech arrived to problem call for entire home. System is approximately 15 years old located in attic servicing entire home. Inspected system system. Found indoor unit running with electric heat, but no indication of outdoor unit. System lacks adequate water protection. Checked outdoor unit. Unit was not operational. System was out on low pressure lockout. Used nitrogen to determine where leak was because system was flat and refrigerant oil was visible near distributor lines on condenser. With nitrogen was able to determine that two distributor lines had rubbed through letting out refrigerant. Spoke to homeowner about repair options. Customer agreed to have install supervisor come out and speak to them about replacement options. System is off at disconnect. Thank you for letting TE CERTIFIED service your home.