Craig
You got a hack job.
500 square foot per ton is used from Maine to Florida. It is not
anywhere as good as a real load calculation. I have used data loggers
to check cooling capacity and current draw on many units. You don't
get near rated efficiency for about 15 minutes of run time. So if your
unit cycles a lot, common with oversized units, your 10 SEER unit may
only get 7 or 8 SEER. Plus oversized equipment does not dehumidify
well. This is because a piston metering device like a Goodman does not
develope a maximum coldness at the indoor coil for 10 to 15 minutes.
Can you spel M-O-L-D? My 2000 square foot house in Myrtle Beach, SC
has a single 2-ton system that does just fine.

BTW Freon is a brand name, like Ford. There are dozens of different
refrigerants, many made by DuPont under the Freon brand. Equipment
using R-22 (your Freon), can only be manufactured for another 4 years.
R-22 can be made for service use for at another 10 years after that,
although cutbacks in production are required. There is also a fair
amount of used R-22 in storage that can be re-distilled. Prices of
R-22 are going up and prices of R-410a (Puron) are comming down, but
R-22 is cheaper right now.

A bigger unit will not move more air through an existing duct system.
To double the air flow as needed for a unit twice as big as the old one
without changing the duct system requires 8 times the blower horsepower
(the cube of the air flow increase according to the fan laws)

Goodman is a cheap unit. A good unit like Trane or Lennox will outlast
Goodman by about 5-years around here. It may be different where you
live, but will be similiar. Goodman is one of the noisiest units
around.

Does not sound like you got a good deal.

Please don't suggest to other people that they make the same mistake
that you did.



Stretch