I performed a single system heating maintenance on a 2018 unit. I checked amps, filter, electrical, cleanliness, sequence of operation, and safeties. From a mechanical standpoint, the unit is performing good. The system has a reasonable amount of dust build up present. This adds stress to the mechanical components of the system. Dust build up will cause efficiency and part life expectancy to be reduced. I provided some options to remove the dust build up to alleviate stress on the components.