I'm trying to determine what size pump to buy.
Below is a typical submersible water well pump chart that shows HP vs head and flow.
For my shop's well, I have a Red Jacket 1.5HP pump. My well depth is 66 feet. The well service guys I've talked to both tell me it's way oversized and said a 1HP is more than enough. The chart seems to echo this....the 1.5HP pump does not even begin to chart until a 120 foot depth.
But, I told one of the well guys I couldn't maintain very good water pressure if too many loads were on it at the same time - especially the outdoor sprinkler system. He said, "Oh well, in that case you should stick with a 1.5HP..."
The other guy told me if you oversized the pump, it would fail sooner as the thrust bearings did not have enough load on them. This sounds a little fishy but not 100% fishy.
Most of all, they both told me the average years of service you can expect out of a pump is 7. My pump is almost 23 years old and working perfectly. So the early bearing failure theory doesn't seem to hold much water, lol.
Anyone have any further insights? I have no concern over the added price or added electricity use of the larger pump....I just want what's 'best' but still not sure what that is.
Below is a typical submersible water well pump chart that shows HP vs head and flow.
For my shop's well, I have a Red Jacket 1.5HP pump. My well depth is 66 feet. The well service guys I've talked to both tell me it's way oversized and said a 1HP is more than enough. The chart seems to echo this....the 1.5HP pump does not even begin to chart until a 120 foot depth.
But, I told one of the well guys I couldn't maintain very good water pressure if too many loads were on it at the same time - especially the outdoor sprinkler system. He said, "Oh well, in that case you should stick with a 1.5HP..."
The other guy told me if you oversized the pump, it would fail sooner as the thrust bearings did not have enough load on them. This sounds a little fishy but not 100% fishy.
Most of all, they both told me the average years of service you can expect out of a pump is 7. My pump is almost 23 years old and working perfectly. So the early bearing failure theory doesn't seem to hold much water, lol.
Anyone have any further insights? I have no concern over the added price or added electricity use of the larger pump....I just want what's 'best' but still not sure what that is.