Home has two systems, both Trane and both original to the home construction in 2004. Both systems work well at this time and clients have no interest in replacing them. Performed tuneup on both systems. Cleared both drain lines. Both indoor units heavily contaminated with biological growth with severely impacted blower wheels. Both dual capacitors for the outdoor units original and failing. Provided recommendations to have both blowers removed and cleaned, both capacitors replaced, and installation of a Pure Air X UVC system into each indoor unit which client opted to move forward with for 2600. Paid with Visa. Both systems cooling well upon departure. Job complete.