I arrived for a blue member fall tune up on a system we installed. I spoke with the homeowner and found only one issue with the flue for the furnace and water heater to be leaking water when it storms. I inspected the flue and sealed the roof jack. I then inspected the system and replaced all filters. I checked all electrical components gas pressures temperature rise and statistics pressures and found no issues with the system at this time. I recommended to flush the water heater and clean the burner compartment at this time. We decided to try and clean the water heat On the next service.