The Furnace; continued

Welcome! If you're just tuning in, this is Chapter Three of a serialized story. To read the story in sequence, scroll down September 28 and start there. Enjoy!

Chapter Three
The Specialist…

The following morning the friends were once again gathered to discus matters of most pressing concern.
“How is your furnace?”
“Well, the furnace specialist came and looked at our furnace. Most impressive! He wears a white coat and an instrument around his neck that he uses to listen to the inside of the furnace.”
“Most impressive indeed! Tell us more.”
“First he used the instrument to listen to the inside of the furnace. Then he shined a very expensive flashlight into certain parts of the furnace. After that he poked his finger into various furnace openings, and then he took samples of various furnace fluids so he could perform some very expensive tests.
Most of those gathered were quite impressed.
“OOOH!”
“AAAH!”
“Very impressive!”
“Yes, most impressive,” said the man with the furnace. “It seems our furnace is suffering from a condition known as, ‘Malfunctioning Furnace Syndrome.” The furnace specialist gave us several strong chemicals which he said will make our furnace as good as new.”
And again, most were quite impressed.
“OOOH!”
“AAAH!”
“Where would the world be without modern furnace specialists?”
One, of course, did not share the others’ enthusiasm. “Aren’t you afraid these strong chemicals might harm your furnace or other parts of your house? Wouldn’t it be a good idea to just check your circuit breakers first?”
“Of course not!” was the indignant reply. “This furnace specialist is very wise. He would never give our furnace anything that could cause harm. Besides, checking circuit breakers couldn’t possibly help anything with such an important sounding name as, ‘Malfunctioning Furnace Syndrome.’”

Will the furnace specialist solve all of our friend's problems? And what of this strange "circuit breaker" fellow? Find out tomorrow in Chapter Four; The Nut...