On 21/10/2019 21:59, Robert wrote:
On 21/10/2019 20:54, Rod Speed wrote:
Commander Kinsey wrote
Why can't I find a heat pump with a good SEER rating? The USA has a
law stating 13 minimum. Yet here in the UK, I looked at Panasonic and
they're all 7 to 11!

https://en.wikipedia.org/wiki/Season...ficiency_ratio
Which suggests that the seasonal weighting parameters used in the US ,
Europe and possibly UK are all different which will give very different
figures.
A quick skim read also suggests that there is a difference in units used.
in the States the ratios are based on BTU of cooling divided by
electrical power in WATTS
And in Europe WATTS divided by WATTS

I may be wrong though!