Performed annual maintenance on 17-year-old Goodman furnace under Hurlburt maintenance agreement. Conducted flue gas analysis with Testo 310 II showing acceptable combustion readings (O2: 10.9%, CO: 16ppm, CO2: 6.62%). Cleaned flame sensor and inspected previously replaced components (draft motor, collector box, igniter). Discussed system age with customer, noting it has exceeded average lifespan of 15 years, and recommended consultation with comfort advisor.
