High SEER capacity derating at 100F

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Old 08-01-2012, 11:20 PM   #1
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High SEER capacity derating at 100F

I have seen some DOE reports with data that would suggesxt that the new high SEER( over 16) units do suffer a larger drop off in actual cooling due to the undersized compressors they must use to get that high rating at the 82F SEER test.

Since I live in a place where almost the entire summer is 100F plus this is relevant to me.

So if I have an older SEER 10 or 12 unit will it cool better at 100F than a newer SER 16 to 18 at the same 100F?

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Old 08-07-2012, 08:45 PM   #2
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Re: High SEER capacity derating at 100F

Compare the manufactures extended data on both systems and you tell us.
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Old 08-13-2012, 04:33 AM   #3
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Re: High SEER capacity derating at 100F

It is essential to understand why the local weather environment dictates what SEER level air conditioning equipment you should choose.!
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Old 09-18-2012, 09:43 PM   #4
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Re: High SEER capacity derating at 100F

Originally Posted by doggone View Post
So if I have an older SEER 10 or 12 unit will it cool better at 100F than a newer SER 16 to 18 at the same 100F?
Not really. R410A does have much capacity/efficiency loss, until condensing temp reaches 135F.
How many times must one fix something before it is fixed?
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