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Subject:Re: Rooftop A/C Experiences 12 volt ac more seriously-Note
From:David Beierl
Date:Sun, 15 May 2011 15:51:19 -0400

At 02:11 PM 5/15/2011, Jeff Schwaia wrote:
>Don't know about the Thermo King, but the Red Dot that I linked to is all
>electric as well.  Also, it only uses 33 amps (@ 12V) as opposed to the DC
>Airco's 50 amps.

Also, Jeff, 16,000 BTU/hr with 400 watts consumption is an EER of 40
which is completely out of sight.  The DC Airco  8500 (~50
amp)-17,000 (~100 amp) BTU/hr units seem to be running EER about
14-15 which is well over the 10.7 EER required for an Energy Star
rating for a window A/C and somewhat below the 16 required for a
whole-house unit - since these are window-size machines that's
excellent efficiency.*

*Probably not directly comparable since the Energy Star and EER
ratings are based on AHAM (?American Heating and Air Conditioning
Mfrs Ass'n?) specs and these aren't; but the "EER" or energy
efficiency rating as such is a bastard unit: BTU/hr divided by watts.

Yrs,
d