I have replaced the blower motor on my Trane Heat Pump system 4 times
in as many years. This was a new home system and the first motor went
out about 6 months after install. The technician said it was a fluke
and since it was under warranty, I was not very concerned. A little
over a year latter, it went out again. I called the original
installation company and asked why this was happening. They said it
was probably due to a dirty air filter. I assured them that this was
not the case as the filters are changed regularly. Since now the unit
was out of warranty, it would cost me $500 to replace the motor. I
replaced it myself with a slightly more powerful motor (from ½ to ¾
horse) and that motor lasted almost 2 years. Well now I'm on my 4th
motor. The air coming from the registers is very loud; much louder
than anyone else's home I've been in. I don't know if this is
related or not. What could be going on here? Thanks for any help.