Its a close call. The life span of the furnace however is in 15 to 20 year range. The furnace itself is worth about $1,290 wholesale, a new motor will run very near that amount.. when you add in the printed circuit card you will be spending more on the furnace than the furnace is worth.
However if the the technician had been a bit more skilled, he would not have mis diagnosed the problem. So he owes you so to speak.
Tell him that in light of the situation that caused you to waste money on a printed circuit card. that you didn't need .....you are now in a tough spot, ask him if he can give you a real good deal on a new furnace to make up for it, so that you will not feel that you wasted all that money on repairs.
A good deal on replacing that furnace with an equivalent high efficiency furnace would be under $3,000... that would be a good deal. The company most likely tries to sell those for $4,000 or more.
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