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. Did inspect blower wheel does have dust on the blower and would recommend a cleaning as well a uv light to help sanitize.Checked temp split and is passing for specifications. Did replace filter for customer that was provided. Cleaned flame sensor and pressure switch hose. System is up and running before departure. Thank you for choosing LBA services-Johann