1.5 HP well pump [RE-wrenches]

[Doug Pratt]

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In a message dated 8/9/2005 7:27:33 PM Pacific Standard Time, 
toddcory at finestplanet.com writes:

On another note, does anyone else run into gigantic well pumps on off 
grid systems?



Well drillers really like to sell big pumps. 1.5 hp is probably about
average. They make more money on bigger pumps, and they'll never get a
callback even after the homeowner installs his 5-acre automated watering
system.

I'm surprised nobody's mentioned efficiency yet. Multi-stage AC pumps
usually manage a miserable 10-20% efficiency. The helical-rotor pumps (like
the Grundfos SQ Flex or the Lorentz) hit almost 50% efficiency. That
standard AC pump might be a lot cheaper at time of installation, but when
you've gotta throw 3 to 4 times as much energy down the hole...you'll pay
for it sooner or later! 

Cheers,
Doug Pratt

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