Stormin Mormon wrote:

Window shakers come in assortment of efficiency. But, overall, I believe
that central AC is more efficient.

Please ask your installer for:
* Rotary compressor

If you're shopping for a central AC unit, do not ask for a rotary
compressor. You'll get a curious look from the salesman.
Most geo units and most window units come with rotary compressors,
central units no.
Did you mean *scroll*?

* TXV coil

Yes to this. Demand a TXV coil.


Expect to pay a couple dollars more than a piston compressor and orifice
coil. But, will pay for itself in efficiency.

hvacrmedic