Responded to no heat call for aging furnace (10+ years old) that was cycling on but blowing cold air due to pilot light repeatedly extinguishing. Inspected heat exchanger and identified suspicious areas of potential deterioration. Cleaned flame sensor which temporarily resolved the immediate issue, allowing furnace to maintain operation. Noted that system never displayed error codes during flame sensor cycling, suggesting possible control board malfunction as secondary contributing factor.
Performed annual tune-up on aging Goodman furnace. Service included cleaning heat exchanger fins, testing operational systems, and flushing condensate drain line. Advised customer on proper filter maintenance and discussed potential future issue with cold end header box, which is not currently leaking but is a known vulnerability with this model.
Performed annual tune-up on 2-year-old furnace. Verified proper operation with satisfactory temperature rise and gas pressure readings. Completed standard maintenance including electrical component inspection, air filter check, removal of debris from air intake, and condensate system cleaning. Tested condensate pump functionality. Customer requested quote for duct cleaning services.
Diagnosed 5-year-old HydroTherm boiler with no heat issue. Investigation revealed disconnected thermostat wire that wasn't properly secured in terminal. Repaired connection by properly inserting wire into terminal, restored signal path from thermostat to control system. Tested full system operation after repair, confirming proper ignition sequence and normal heating function.
