Upon my arrival in Rosanky I performed a 6 month checkup on one heat pump system. During the evaluation I found a significant amount of bacterial growth inside the air handler. Completing the evaluation I found everything operating properly in both the performance and safety aspects of the system. I spoke with the customers about the bacterial growth and went over their different options to correct the issues. They chose to go with HH14C having a chemical cleaning performed and the installation of Solaris. Will need to reach out and schedule a return to perform repairs. Collected 10% down today.