Technician arrived early which was to my benefit. Promptly performed the usual summer check-up and found a couple of issues with aging components. We discussed the issues and options to my satisfaction. I understand a bit about the system and components and felt confident that replacement would soon need to be done; especially before winter. I have been a customer for approximately 10 years or so and have maintained a service contract. All considered, the entire team has provided excellent service over this time period.