Performed heat tune up on 11 year old amana furnace located in attic. Washed 2 heavily impacted filters. Cleaned all furnace components. Tested all electrical components and tightened connections. Adjusted gas pressure back down to manufactures specs. System is operational and heating at this time. Honored $25 discount coupon. Signed homeowner up for 1year of superhero club membership. Will have 2 more visits after today