Just finished up a Routine Maintenance & Tune Up on a 21yr old American Standard Natural Gas Furnace that we installed in the Northern Wilmington area in Delaware. Still kicking strong and producing heat like it should! A quick adjustment of the gas pressure and a good wipe down was all she needed to look brand new again. We love to see people get the most bang out of their buck with their furnace, especially when it comes from us! Thank you for allowing us in your home and enjoy the New Year!