Performed combo tuneup on a Comfort Pro system. Heating temperature split is 35 degrees. Flame sensor had light wear, it was cleaned and reinstalled. Ignitor is reading in range. Primary blower wheel had a piece of insulation stuck in the fins that I cleaned out today. Combustion blower is amping good. Duct runs are sealed and free from obstruction. A/C unit cooling split is good at 22 degrees. Refrigerant levels are in range. Condensate lines are clear. Compressor start and run amps are in range at this time. Both systems are not protected. System was cycled before departure.