The first url says submersible last longer, and the second url says
the pedestal pumps last longer!!!
Submersible - .... They are more expensive than the pedestal pumps
but are quieter and tend to have a longer life because their sealed,
oil-cooled motors are protected from moisture and dust.
But pedestal pumps are less expensive and last longer. Because
submersibles sit in water a good deal of the time, they have a life
span of from 5 to 15 years.
It doesn't matter. They both have switches and switches go bad.
However, submersibles are a little quieter, but, that could be a bad
thing because you may not hear it running.
Anything can fail, flip a coin.
Submersible are quiet, I have 7 commercial grade pedistals from maybe
the 50s, I can repair anything and put on a new motor if needed but
today they cost new near 400$ , they are not the 49.99 HD stuff which
is plastic. Get a good submirsable like Zoeller, HD stuff is probably
cheapo made, you do get what you pay for.
Better yet, get two pumps and set them up so that one has a higher
turn-on point than the other. That way, when the first pump fails you
will not have a flood. They all fail, it's just a matter of what you
do when it happens. I have owned both types, and it is 99% sure that
the switch will fail before the pump. EIther type is subject to this
problem. The arcing when the switch turns off the highly inductive
load of the pump causes the switch contacts to arc and that eventually
pits the surface. Then, either the switch sticks closed and the pump
runs continuously which will destroy the motor, or the contacts close
but do not make electrical contact and the motor does not turn on.
Either way you have a flood if you do not notice what is going on. I
seem to have a sixth sense about hearing feeling the pumps in my
houses going on. I have awakened in the middle of the night and
sensed something was not right, gone down into the basement and found
One 'pulls' the water and may need priming especially of the foot valve
The other 'pushes' the water and never needs priming. You can push a lot
more water than you can pull. The deeper wells work better with
submersibles. I think it's nicer not to have to listen to it working.
The pedestals I've seen also require 2 pipes where submersibles only
need one. I don't know, that may be old technology with the 2 pipes as
my parents had.
All the pedestal pumps that I have ever seen or used have the pump
below the water, only the motor is above the water and the motor
drives the pump at the bottom of a long vertical shaft. The switch is
part of a float assembly that mounts on the vertical pump shaft
You've seen odd pedestals. The ones for sumps have the entire pump
section under water and "push" just like submersibles. The hook up the
same as submersibles too. One vertical oriented female pipe thread.
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