wrote


SEER factor for overall energy efficency. most companies sell a variety
of SEER efficencys. years ago a 8 was very good. Now I hear 12 is norm,
up to 20 for a super high efficency unit.

If you are talking about split systems:

12 SEER is obsolete. You may find a few brands out there that still have
some 10 and 12 SEER units, but once they are gone, that's it.13 is the
required minimum now. Carrier and some other manufacturers actually have 21
SEER models.


the higher the seer the more the energy savings, but upfront cost can
be brutal. super high seer might be worth it in southern florida, but
marginal at best in maine, where the number of AC days is low.

its always good to check the energy labels on appliances