Want to create an interactive transcript for this episode?
Podcast: HVAC School - For Techs, By Techs
Episode: Heat Exchanger Crack Comment - Short #280
Description: In this short podcast episode, Bryan responds to a comment we received about cracked heat exchangers and how they were characterized in a recent combustion safety podcast episode. In reality, heat exchanger cracks counter the effects of the inducer motor. The inducer pulls air through the heat exchanger, but a crack causes the inducer to pull the air from elsewhere, especially once the blower motor comes on. That is a cause of flame rollout and a higher CO measurement. Induced draft (80%) furnace venting is under negative pressure near the equipment (WRT the air in the r...