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udarrell
 
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Those posting for tech opinions need to give a lot more information, or quit
asking for advice!
If your local contractors' were communicating effectively and doing their
jobs properly you wouldn't need outside advice.
In the other NG you asked:
Do we need air returns higher on the walls upstairs on the second story to
make AC more effective? (Rheem Guy is right.)

YES! Drawing the Return air from near the ceiling well help put more of a
heat-load on the evaporator coil and provide better distribution of the air
in the rooms.
The supply air is probably at the floor level(?) (You should have told us!)

First, make all the changes you can to reduce the heat load/heat
loss, --insulation, etc.
Then have a complete room-by-room Manual J heat load/loss calculation done
on the house to insure correct sizing of the unit, and a Manual D for
correct sizing of the Main and Branch Ducts. Make sure the ducts are
properly insulated and that there are no leaks.

Who knows, the 2.5-ton could be bigger than you need. All the companies you
had out to bid are leaving you stumbling around in the dark! A good company
and tech will do the tell you what you need to know and do before they do
the Manual J and D.

Read and learn. Wise up! Why pay $1400 dollars more for very possibly,
oversized equipment and variable speed.
In my opinion Rheem equipment is as good as Carrier. Ten SEER is the lowest!
What is your climate like? Where do you live? What large city do you live
near?
--
Air Conditioning - The Air Side of Air Conditioning
http://www.udarrell.com/external_sta..._readings.html
==========================================
"WhyKnot" wrote in message
...
In your opinions, what are your thoughts on (regarding a furnace and

central
air conditioner):

Rheem Weather King 80% (Not a variable speed) and a 2.5 ton Rheem AC unit
vs.
Carrier WeatherMaker 58CVA , also 80% (Variable Speed) and 3 ton Carrier
38TKB AC unit

I have to choose between the two for my house and I don't know which to go
with. I don't have any information on either of the two installers that
would help me pick which one was a better installer...both are personally
involved with the installation.

The second quote was more money than first, given it's a variable speed
furnace and a slightly bigger AC.