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Author Topic: should circulating pump be wired to run 24\7 or shut off and on?  (Read 17805 times)

RSI

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Re: should circulating pump be wired to run 24\7 or shut off and on?
« Reply #15 on: January 25, 2011, 10:31:48 PM »
Quote from: 1grnlwn on January 17, 2011, 06:58:39 AM
Has anyone done the calculation to see what this cost to run pumps 24/7 ?  I can see how it would be beneficial for DHW but seams like a waste.  I am a cheap 8*5&tadr and get upset when the fire is out and the draft fan is out there just blowing cold air into the stove.  JMO.
It isn't very hard to figure out. Just divide 1000 the wattage of the pump of the pump.
If you have an 85 watt pump you would do 1000 / 85 = 11.76 hours per KWH
So approximately 2 KWH per day. I think the average rate is $0.10 per KWH so $6 per month running continuous.
If you have a larger pump (taco 001, grundfos 26-96, etc) it is about $15 per month.
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