Well if your furnace requires a 3/4 hp motor and he has a 1/3 hp in there, and I can see from here he has it running on the lowest speed in heat mode "red" your in trouble.
“Experience is a hard teacher because she gives the test first, the lesson afterwards". -Vernon Law-
"Never let success go to your head, and never let failure go to your heart". - Unknown
"To face tragedy is the greatest challenge; to overcome tragedy is the greatest success" -Ranal Currie-