I’d double check that cost per hour calculation.Trying to wrap my head around all of this.
I have an 11,000 gallon Royal pool (new to me) and currently it has just a skimmer with about a 60' run back to the 1.25 HP pump in 1.5" PVC into a Hayward Proseries S-244T.
I'm reading poolpartstogo and it is confusing me on the size of the pump I should get.
Currently drawing almost 12 amps, so 1.44 kw at .12 cents a kw so costing me about 17.3 cents an hour.
I KNOW going variable will save me money, but budget is tight right now, so was wanting to run the numbers and see what the ROI would be and probably could sell it to the wife if the math maths.
Feet of head, flow rates, horse power, potential new pump to save money?
- Thread starter Gilligan8
- Start date
1.25 X 0.12 = $0.15 per hour.
= $3.60 per day or $108.00 per 30 days running 24/7.
0.20 X 0.12 = $0.024 per hour.
= $0.576 per day or $17.28 per 30 days running 24/7.
That is $90.72 saved per month or $544.32 saved for 6 months.
Assuming 6 months per year for 100 years, that is a savings of $54,432.00.
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I mean, I checked it with a clamp meter... it's almost 12 amps.
It's a 120v pump... so that's 1,440 Watts or 1.44kW.
.12 cents a kW so that's .12 * 1.44 = 0.1728 per hour.
If I run it 8 hours (turn over rate is estmated at 2.5h * 3 = 7.5, let's call that 8) then we are at $1.3824... 30 days = 41.472.
Running one at 300w 24/7 would work out to $25.92.
So that savings is now only $15.55 per month... Now we are talking about an ROI of just over 3 years... not as attractive if I'm not running my current single speed pump 24/7 which I don't need to.
- Jul 21, 2013
- 66,879
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
The need for daily pool tun rover is a myth. You should not be running your pump thinkong you are achieving a certain pool turnover since it is not achievable.
www.troublefreepool.com
Turnover of Pool Water - Further Reading
www.troublefreepool.com
I was more referring to the cents/KWh. Thats some pretty cheap power down there. Jealous.
It's a coop as well... so pretty nice deal, but in general rates are pretty decent down here.
This is before we turned on the pump and the weather was nice. LOL
And to rub it in your face a little more, this is a commercial space on the same power company.
Thanks for the link... that helped.The need for daily pool tun rover is a myth. You should not be running your pump thinkong you are achieving a certain pool turnover since it is not achievable.
Turnover of Pool Water - Further Reading
I wonder about being around two large oak trees (VERY close... like above it
) with all the pollen that comes off of them.Plus my kid and I are allergic to oak pollen... we are taking allergy treatments for this and are a few years into the treatment... but I'm REALLY curious as to how this will work out with so much oak around us and us swimming in it.
That's the Apparent power.
The "Real" Power is the Apparent power X the power factor, which is probably about 0.94.
115 X 11.5 X 0.94 = 1,243 watts.
In any case, the pump uses a lot of power.
A door/weir will help a lot.
And to rub it in your face a little more, this is a commercial space on the same power company.
View attachment 556955
Actually looks like whatever the “power cost adjustment” bumps up your total cost to double what I’m paying last month. I also used about 650kWh total so I’m sure that helps make it cheaper as well.
Nothing wrong, for some reason I may have been remembering my time living in CA where 12 cents would have been abnormally cheap. I just checked mine here 11.8/kWh and so it seems pretty reasonable now.
