Re: Sizing a new pump
At $0.10 /kwh, it would take a standard VS about 130 months of 4 hour operation/day to become more cost effective than a two speed . If you are willing to go with a lower cost VS such as the MaxFlo, it would take about half that time. But if you are in a lightning prone area, which is why I asked about your location, it is even worse (~50% longer) because you have to factor in the cost of surge protection.
Mark
Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
Re: Sizing a new pump
We live in Central Virginia. We have a hurricane season.
~36,000g IG gunite -- 2Hp Pentair UltraFlow filter pump - replaced with 2 speed 1 1/2 HP ultraquite pump -- 3/4 HP vacuum booster pump -- DE filter --K-2006 test kit
Re: Sizing a new pump
You can use this map to determine your vulnerability.
http://www.vaisala.com/VaisalaImages...01997-2010.png
Mark
Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
Re: Sizing a new pump
Looks like we are in the 9-12 region.
~36,000g IG gunite -- 2Hp Pentair UltraFlow filter pump - replaced with 2 speed 1 1/2 HP ultraquite pump -- 3/4 HP vacuum booster pump -- DE filter --K-2006 test kit
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