Arrived onsite to customers request of having furnace looked at due to it not working. Found 30 year old furnace not working, provided pricing for replacement and diagnostic, customer approved diagnostic over the phone. Found a bad igniter. Customer approved work. Changed igniter, pulled out second filter as it was very dirty and not necessary. Changed main air filter 16x20x1. Supply air temperature is 90 degrees. Return air temperature is 60 degrees. No carbon monoxide is present in duct stream, furnace is safe to operate. No additional issues were found. Inducer motor amperage, is within normal range 0.53 amps. Blower motor is within range as well 3.6 amps. Flame sensor reads 2.3 micro amps dc. Gas pressure is 7.5 inches wc. Thank you for choosing CPI Plumbing and Heating Inc,