What exactly is your definition of a furnace? I thought a furnace in a residence was only called a furnace when there was a pilot light and the furnace burned gas. Other guys in the trade are calling an electric air handler a furnace. I always called it an air handler, gas or electric. So whats the correct terminology to be using? Also what is the correct terminology for the condensor? Some in the field just say the "compressor". Thank you.