Performed heating maintenance on two 2016 Lennox 93% efficient single stage natural gas furnaces Smaller furnace is 70,000btu 3.5"wc 54⁰ temperature rise Larger furnace 110,000btu 3.5"wc 55⁰ temperature rise 16x25x1 and 20x25x1 filters are in good shape, left the ones we provide at the furnaces Pulled and cleaned flame sensors Checked Condensate lines Inspected vent piping Larger furnace does have some intake condensation evidence, burners may eventually need replaced Discussed adding an intake drain, declined for now Checked and adjusted gas pressures to factory spec Temperature rises within factory specs Blowers are a little dirty, but not to the point of affecting performance Intake screens are clear No signs of water leaks inside or around the furnaces No concerns found on today's visit
