"Steve Scott" wrote in message
...
Measure the temp of the air going into the return grilles and the
return air temp at the furnace. There's often a big difference there
too.

On Sat, 06 Aug 2005 16:13:16 GMT, "FDR"
wrote:


"Steve Scott" wrote in message
. ..
California has estimated the average residential duct loss there to be
in the 30% range. Based on what we see in NY that seems reasonable to
me.

Sounds about right. In the winter in NY here the one side of the house
nearest the furnace blows out 120F while the other end of the house blows
out 90F.


--
Never mind the facts - I know what I know

The problem too is that the house is cold on one end and warm on the other
in the winter. The easiest thing seems to be adding a electric heater to
help a bit.