On Mon, 13 Aug 2012 16:38:41 -0700 (PDT), "
wrote:

On Aug 13, 6:29*pm, "Stormin Mormon"
wrote:
The often neglected aspect of low air flow, is return air ducts. Often under
sized.



All that is good, but if there is very limited air coming
out of most of the registers, not just very little cold
air, but very little air period, then I don't see how anything
maintenance related is going to do squat. It has an
electrostatic type filter and it's clean.




But, as Chris points out, if the inlet is restricted, the outlet won't
have an air to move. Do check that part if you have not already.