(1-5 REQ) COD. Spoke with Steve. He said that he feels his furnace blowing out room temp air. The t-stat says that his heater is supposed to be coming on, but he doesn't hear anything coming on and the air isn't getting warmer. The unit is 22 yrs old, our install, we are unable to pull the invoice due to how old it is. Located in the house inside a closet. He is aware of the $158 diagnostic fee.