On Thu, 05 Jun 2014 06:12:10 -0400, Ed Pawlowski wrote:

On Wed, 4 Jun 2014 14:08:38 -0700 (PDT), wrote:

Return vents are never high on the wall.
Hi Ed,
Return vents for AC are often high on the wall. My house has vents
both high and low in each room. The lower vent can be closed. In the
winter, the lower vent is open providing a traditional cold air
return. In the summer, the lower vent is closed thereby providing a
high up hot air return for AC operation.
Pat