Ac maintenance Change filter homeowner changes filter Check capacitor 45/10 reading 44/9.8 Check compressor amps 13.7 rated for 23 Check fan amps .88 rated for .9 Tighten cores and king valves tight Check blower motor amps 4.5 Clean condenser coil in and out Check static pressure .2s .4 r Homeowner described a noise when the unit turns on. I stood on the back porch and could hear what sounded like a rattle. The rattle sounded like it was coming from the breaker panel. I’m not sure exactly where the noise is coming from. Homeowner had an electrician come out and he could not figure out where the noise was coming from either. All of the numbers on the compressor and fan motor look fine. Cleaned unit and could not hear noise from unit, only outside near panel. Registers reading 52 degrees with home at 74 degrees. Unit cooling and functional upon departure.