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Posted by Abby Normal on June 28, 2007, 9:00 am
> I know what the two are, my question however is this,
>
> What actually effects the ratings the most?
>
> I'm under the impression its in this order:
>
> Condenser size
> Evap efficiency
> Compressor designs
>
> I really don't think for A.C and Heat pumps that the compressors have
> changed that much, have they? I'm speaking of course of r-22 units. What
> has really changed from lets say 10 seer to a 12 seer? I see a larger coils
> and due to that a smaller compressor, but did the compressors actually
> change any?
>
> Rich
Coils are getting bigger, compressors a little more efficient and
smaller.
SST is rising, CT dropping. Compressor capacity increases with suction
pressure
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