Performed a complete heating system maintenance and inspection. 2017 heat pump Inspected and tested all electrical components and safety controls on the indoor unit; all components tested within manufacturer specifications. Inspected ducts and blower wheel. I found dust/debris on both the return ducts and blower wheel. Verified system temperatures: return air temperature measured at 76°F; supply air temperature measured at 102°F and rising. Confirmed air filter was recently replaced by client; filter size is 20” x 23” x 4”. Inspected and tested all electrical components on the outdoor unit; all components tested within manufacturer specifications. Except for the start amps were testing on the higher side. By installing a hard start kit we can help the compressor last longer and by bringing the start amps down. Confirmed system was operating properly and heating upon departure. System Status: Operating normally at time of service.