Went for a tune up call today for heat. All electrical components are passing for manufacture specifications. Did a combustion test is within range. Inspected heat exchanger no cracks/leaks were detected. However did find rust on eyelids did show customer finding.Temp split and is passing for specifications on furnace. Cleaned flame sensor and pressure switch hose. System is up and running before departure. As well removed humidifier per customer request and collected payment. Thank you for choosing LBA services-Johann