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Old 08-11-2019, 05:10 PM   #1
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Mini-Split Consumption

Anyone have any consumption numbers on a 12BTU Mini-Split system?

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Old 08-11-2019, 05:15 PM   #2
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Marc, more info required... per day .. per year.. what temperature...and so on.


Later

J
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Old 08-11-2019, 05:28 PM   #3
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Marc, more info required... per day .. per year.. what temperature...and so on.


Later

J
How do you plan a system with no knowledge of requirements? I know what my fridge uses when compressor kicks on and what it uses over a span pf time. Surely someone with a 12BTU unit can ballpark KWH used and useage when kicking on.
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Old 08-11-2019, 06:41 PM   #4
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I just measured mine 553 Kwh 12500 btu, about 85 degrees sitting in the sun.
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Old 08-11-2019, 07:12 PM   #5
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I just measured mine 553 Kwh 12500 btu, about 85 degrees sitting in the sun.
Over what period of time?
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Old 08-11-2019, 07:29 PM   #6
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An hour.....
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Old 08-11-2019, 07:53 PM   #7
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I just measured mine 553 Kwh 12500 btu, about 85 degrees sitting in the sun.
That does not look right.

Residential A/C units have SEER ratings between 14 and 25.
That is the ratio of BTUs cooling divided by the Watt hours consumed. It is typically averaged over the entire season but it can be calculated for one hour and should be in the ballpark.

Your unit would have a SEER of .023 with the numbers you provided.

It is more likely that your hour of operation consumed 553 Wh (1 kWh = 1000 Wh).
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Old 08-11-2019, 08:25 PM   #8
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When running at maximum cooling mine use about 1200 watts/1.2 KWH per hour. That translates to about 100 amps from my battery bank. They only run flat out in extreme conditions. About half of the above numbers is more common. In heat mode it goes up by maybe 25% IIRC.
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Old 08-11-2019, 08:45 PM   #9
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That does not look right.

Residential A/C units have SEER ratings between 14 and 25.
That is the ratio of BTUs cooling divided by the Watt hours consumed. It is typically averaged over the entire season but it can be calculated for one hour and should be in the ballpark.

Your unit would have a SEER of .023 with the numbers you provided.

It is more likely that your hour of operation consumed 553 Wh (1 kWh = 1000 Wh).
You're right, my bad. It was 553 Wh. I measured it with a kil a watt for an hour. Don't know why I put that K in there.
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