Trying to decide between Lennox XC and ACX series air condensers
I am putting a 3-ton air condenser on the roof of my city rowhouse. The roof location is right above the master bedroom so I am concerned about noise. I understand both types emit noise upwards but still. The XC (more expensive) is rated up to 70 dB and the ACX up to 76 dB. The difference in price is something around $500. Another concern is the energy efficiency. The house is 1800 sq ft and has a 3-T also Lennox air handler.
Please help me decide whether it is worth paying an extra $500 for the more expensive kind. I did online comparisons but would like some 2nd opinions.