Performed preventative maintenance for gas furnace. Customer wasn’t interested in having maintenance done for the mini split system due to it being replaced in September 2022. Inspected all the electrical components. Confirmed proper high and low voltages. Cleaned the flame sensor and burners. Replaced the #201 media air filter. Inspected all electrical components. Cleared out the inducer port to pressure switch. Performed combustion analysis. System is operating at 84% efficiency with a CO level of 14ppm. System is operating properly at this time. Model #G60UH-36B-090-09 Serial #5909B16999