I have a Kenmore furnace that was installed in May 1999, cracked heat exchanger March, 2010. Sears did the repair and it cracked again in De. 2010, repaired again by Sears. November 2012, had a Trane installed, there were big holes in the exchanger?
Would it be common for 4 heat exchangers to go bad in 13 years?
Thank you in advance,