2023 Fall Check Up PCSA New No heat. Cause of the issue was a dirty flame sensor. Cleaned flame sensor. Checked wiring. Burners are a little dirty but operating normally. Condensate pan gasket is beginning to leak and could present problems in the future. Replaced filter. No CO detected inside the house. System is operating normally at this time. Customer may want a price on a new system and some duct work in the near future.