Performed Platinum Comfort Club Membership Tune-Up on Heating System Checked amp draws, gas pressure, and heat rise. Reduced gas pressure from 4.1 down to 3.4 inwg. Capacitor tested good. Wiped system down and brush off cat hair. Filters are in good shape. Carbon monoxide detector in home is 20 years old and needs replaced. Customer prefers smoke and co detection combo so they will replace themselves. Recommended surge protection for furnace.