lukomuko

the ANA1 is rated at 70db, the ANA7 at 72db..

I have to admit I am a little warry about these manufacturer sound ratings.

Basically with these two models, the sound difference between the two models should be indistinguishable except to the very sensitive ear..

Here is a link that might be useful: Carrier AC Infinity Site

Tigerdunes, thanks for your replay.
I have oredered today an Infinity ANA1. Will se how it quetly works in reality.

P.S. I you look to the waighted noise level table you will see totally different scenario.
ANA1 72/73 dB and ANA7 69/70dB.
I do not trust those noise level numers which are given by Carrier.

P.S. #2. I am a little bit upset, did not have big enoug budged for the most quiet system - IQ Drive by Nordyne.