I just traded in my 2007 CR-V for a 2013. So far I love it.
On the ride home from work, my wife said she was concerned about a sound she heard. The sound came on when we accelerated from a stop with the Air Conditioner on. To me, it sounded like the compressor was working extra hard while the engine was in lower gear.
Personally, it didn't bother me, but I do admit the air conditioning system on the 2013 does sound different than the system on the 2007.
I thought I would post and see what others had to say, to reassure my wife and myself.