NATIONAL TUNE-UP DAYNational Tune-Up Day on September 25th reminds homeowners to prepare for the winter heating season. Heating and cooling specialists recommend that homeowners tune up their heating systems every year in advance of seasonal changes. These tune-ups ensure that the systems are operating as efficiently as possible. Tune up ,tune up and tune up ! It seems like a ringtone for a phone right ? It's cool ,I had many tune ups that might be the day related to saying something but my tune up is saying ohhh !!! Willow!!! about my day being late if I got late entries in all aspects of day routine life.