My furnace stopped working. An HVAC guy changed the flame rollout switch because it kept popping and needed to be reset. He discovered the heat exchanger was cracked. We've had the unit for about 10 years. What is your warranty on the heat exchangPost created: 2012-10-09 Type of Equipment: Furnace Views: 33This question was created on the page: http://www.furnacecompare.com/furnaces/payne/pg9.html. I've owned the furnace 10 years. The problem began several days ago. We had the flame rollout switch replaced, and our technician diagnosed the issue as being a crack in the heat exchanger. What is your warranty on the part and/or the furnace? Thanks Your Answer |