I performed a single system heating maintenance on a heat pump system. The indoor is from 2021 and the outdoor is from 2024. I checked amps, capacitors, filter, electrical, cleanliness, and safeties. I discovered the capacitor is beginning to lose its charge. I provided an option to address it now before it gets worse. System has surge protection, hard start kit, u/v stick, and Apco-x. System is heating upon departure.