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Old 03-25-2020, 08:48 AM
starflyte1 starflyte1 is offline
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Thank you ! I will definitely check out the suggested website.


The heat pump that I have now requires that I manually set the pool pump to continually run when heat pump is on. Previous pool heater and pool pump worked together to start automatically .

I am happy that the pool heater seem to be working properly now, so have time to spend choosing the next one to buy.

Quote:
Originally Posted by lrvalley View Post
Older pools came with single speed pumps and two speed pumps. The single speed pumps run at 100% all the time. They use a ton of electricity and are noisy the entire time they run.

Two speed pumps have a high speed and low speed. High speed is typically used during priming and when a heater is running. Both gas and electric heaters require a minimum flow rate to kick on and heat - usually around 75%-85% of your pumps full speed. A two speed pump can only run at 100% and whatever it was designed to run at for low speed.

When running a VSP (Variable Speed Pump - most new pools should have one) the electricity savings if used properly can be tremendous - easily paying for the increased cost of the pump in a short time. Below is a chart showing the pricing if a 1.65hp VSP were run for 24x7 for a month using current SECO rates:

RPM % Watts Hours Daily Watts Monthly Kw $$/Kw $$/Month
600 17% 22 24 528 15,840 15.8 $0.12 $1.90
800 23% 41 24 984 29,520 29.5 $0.12 $3.54
1200 35% 112 24 2,688 80,640 80.6 $0.12 $9.68
1400 41% 168 24 4,032 120,960 121.0 $0.12 $14.52
1800 52% 332 24 7,968 239,040 239.0 $0.12 $28.68
2000 58% 445 24 10,680 320,400 320.4 $0.12 $38.45
2200 64% 585 24 14,040 421,200 421.2 $0.12 $50.54
2600 75% 959 24 23,016 690,480 690.5 $0.12 $82.86
2800 81% 1,197 24 28,728 861,840 861.8 $0.12 $103.42
3200 93% 1,800 24 43,200 1,296,000 1,296.0 $0.12 $155.52
3400 99% 2,214 24 53,136 1,594,080 1,594.1 $0.12 $191.29
3450 100% 2,315 24 55,560 1,666,800 1,666.8 $0.12 $200.02

As you can see, even running the pump at 80% save 50% in costs. Running the pump at 40% saves 93% in costs.

My pool is fully automated, so it always runs at 40% unless the heater is needed. Without the heater, my pool costs less than $20/month to run. With the heater, it is typically $30-$40/month to run as the only time I'm drawing a lot of electricity is when the pool is actually running.

Another advantage is that I can keep the pump running 24x7 for very little cost, my salt cell keeps the chlorine levels in the pool very steady - no ups and downs from only running 8-10 hours a day. This results in a far clearer pool and considerably less in chemical costs.

Hope this helps! If you're looking to learn more check out TroubleFreePool online - the site has a ton of great pool info!
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