One system heat tune-up in Lawrenceville. Arrived on site, changed filter and cleared barometric ports, checked ignition systems, electrical connections, amp draw and capacitance. Found dirty blower assembly and a warn flame sensor. Recommended pulling and cleaning the blower motor assembly and replacing flame sensor. Also found that the duel run capacitor in the outdoor unit is still within spec, but it is on the lower end of good and should be replaced in near future to reduce any stress being put on compressor. Recommended installing surge protection to both pieces of equipment, as well as a compressor assist kit to the outdoor unit