Performed A/C check up on both 2009 Trane Hp splits systems. Found both systems PSI levels reading low, check for signs of a leak or oil found no visible leak. Also recommend some repairs on each system. Advised homeowner that would be good to be proactive on replacing systems due to age and condition. Homeowner interested in estimates on new systems. Will schedule a tech flip for Comfort specialist once both homeowners can arrange time to both be present during appointment.