Installation of 13HPD heat pump and CB26UH air handler completed
yesterday. The air handler motor has the expected hum but somewhere in
the system is a higher pitched noise. I'm thinking possibly fan bearing
or maybe resonance in the ductwork. Installer said noises were normal,
but the high pitched noise is so irritating that I shut the system down
last night and went back to using the space heaters so I could get some
sleep. Is the Lennox an inherently noisier system than others? After
spending $6000, I'm not entirely happy with the system. Installer says
it's not his problem. Should I contact Lennox or is this as good as it
gets with this type of system?

Bob