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The storms in the afternoon dropped about 1/2". In general, we're about 20+ inches short this year. We've had maybe 2" since February. And the dry has made the temps higher.
I replaced my A/C condensors and so did some research to see the effect of the change. Part of my research was to calculate before and after effect on electric usage. I did a regression analysis of degree days per day vs. electric usage per day, before and after.
Something obvious thing showed up in the data. In August 2011 required 43% more cooling than 2010!
FWIW, changing the first A/C unit back in June reduced my cooling energy usage by 36%. I haven't had a full month with the second unit yet, I'm expecting that, combined, the reduction in cooling energy usage will be 50-70%. Before the change, cooling was about 50% of my energy usage over the entire year. I'm expecting it to drop to between 23%-33% of my usage. Even at $0.08/kwh, the payback should be aboout 2 years.
The aluminum fins on the condensors had started oxidizing and were turning to dust.
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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