I performed a single system heating maintenance on a 2013 gas system. I checked amps, capacitor, filter, electrical, safeties, cleanliness, and air quality. I performed a dryer vent cleaning as well. System is performing within specifications. The air quality could be improved. I provided pricing to add an air scrubber. The indoor system is not protected by a surge protector, and the blower capacitor is on the bottom side of specs. I provided pricing for those items, also.