Went for a maintenance call today for heat for two systems. Tested for static pressure system is passing when in heat for both systems. All electrical components are passing for manufacture specifications for both systems.Did a combustion test is within range. Inspected heat exchanger no cracks/leaks were detected for both systems. Checked temp split and is passing. Did replace filter for customer that was provided for both systems. Cleaned flame sensor and pressure switch hose. Both system is up and running before departure. Thank you for choosing LBA services-Johann