r/OffGrid • u/Moist-Ant6720 • 3d ago
Water pump off grid
Looking for recommendations, I am putting 2 inc totes underground due to extreme Texas heats to keep the water cool it’s a temporary while my water well gets done, what pump do yall recommend ?
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u/Dadbod2343 2d ago
The Drummond one with the tank attached has worked well for me for several years.
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u/Thubabri 2d ago
Me also. Approaching year 5 and still working good. Use mine to pump pond water for irrigation.
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u/Longjumping-Cash3080 3d ago
I'm leaning towards the Grundfos scala2 in the near future for my off grid place
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u/ol-gormsby 3d ago
Be very cautious with the Grundfos. The guy who did my place - an industrial plumber, not your usual domestic guy - recommended a Grundfos - the exact model to get to meet my needs - a CMBE 5-62.
Turns out it's not the best pump for my needs. It needed to pump from storage to the header tank, and to power the fire suppression sprinklers on the roof, and it met all the head, pressure, and flow requirements. It was fine for almost 2 years and then started making screeching noises. When I described it to a Grundfos dealer, he said that was the symptom of a flogged-out impeller, and they were starting to see that more and more in that range of Grundfos pumps. $500 for a "wet end" kit - impeller, seals, etc. But it will flog out again, so I'm looking for a better pump.
It only got used about 30-45 minutes a week. Doesn't mean the Scala range isn't any good but I expect better for AUD$3000.
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u/jakewins 3d ago
Three things I’d look for if I bought a pump again:
- 2-phase helped reduce the load on my PV inverter vs 1-phase, would pick that again
- We bought cast iron, but we treat the water cistern ahead of the pump with chlorine and I think that’s the reason there’s a ton of corrosion just a few years in, would check for chlorine resistance
- I would kill for a self-priming pump, we have to drain the system when there’s a risk of frost, and it’s a pain to re-prime it down in the crawl space
These are probably very specific to our setup though (intermittent use cabin, off grid solar, rainwater cistern)
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u/MrMcFisticuffs 3d ago
It's probably overkill but the Gould J5S has been my lake intake pump for over 15 years. It's pumped water, air, and gravel without complaint.
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u/PumpNPumpAccessories 2d ago
The Drummond 1HP without the tank is fairly stout. I have one running my irrigation.
The Dab EasyBox Mini 3 is a great pump for this setup. Very efficient, variable speed like the Grundfos booster pumps, and lots of great features on the display and in the app (gallons consumed, power consumed, etc.).
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u/ou81aswell71 2d ago
Not to be a naysayer, but be careful that you don’t leave them empty if you get a lot of rain. I’ve read that a cistern will float out of the ground in heavy ground soaking rain.
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u/777MonkeyNuts 2d ago
Getting ready to start my off grid journey. Saving this post for later. Thanks!
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u/offthewallness 2d ago
I used the pump in your second picture for a couple years on my off grid property.
We had a 2500 gallon water tank, I built a small enclosure to the side of it for the pump, I also added a second, larger, residential pressure tank.
I also added tee’s, quick fittings and valves to my setup so the pump could fill my water tank. I’d haul water in, flip my valves around and the pump would empty the water tote on my trailer into my big tank. I’d disconnect, flip the valves around again and it’d be back in service.
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u/mega-husky 3d ago
I have a Seaflo 55 series. Good unit, great when you factor in the easier cost.
In the future I may get Grundfoss Scala 2
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u/Normal-Special-8694 3d ago
I run my well into a 500 gallon underground cistern, I had a jet pump coming from the cistern for about a year and then I had a situation where my line into the house froze so I had to bypass it with a shurflo industrial diaphragm pump, and it has been doing great chugging away for like 6 years now. It uses a lot less power, and it’s a lot quieter. I still use the jet pump for irrigation and an emergency fire sprinkler system but when this shurflo dies I’m replacing it with another one.