Well, the HVAC unit is toast.  We definitely killed it with the fire.  We are waiting now to see what the repairmen have to say.  Luckily, we have the home insurance that "should" replace the HVAC - we'll see.  It would be very nice to get something new and more energy efficient for the house, especially with the new solar energy system we just put in.  We aren't live with the new solar system yet either.....one of these days.