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philosopher and statesmen
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8,605 Posts
Discussion Starter · #1 ·
Anyone have any experience with them or had troubles with a Grundfus booster pump??

We installed a grundfus booster pump in a tight area under a stairwell about
back in 2020 or maybe 2019 and the dam thing blew a gasket yesterday or
sometime earlier in the week....

When I installed the pump I went the extra mile and actually installed a water barrior
and half of a plastic cargo box to contain any future leaks.. and force them away from the
wood flooring nearby... ... If a water heater pan would have fit in this tight spot I might have
thrown one of them under this pump
I even used silicone to seal around the box and force the water to fall into the crawl space access inches away from
the pump....

But Instead of teh water falling into the crawl space like it should have done, it decided to go to the edje and
then walk back up the bottom side of the plastic barrior I installed and find its way into the wood work...

somethiing like what a dribble off a tub spout can do. go back up the spout and get behind the tile... o_O 😢

I went the extra mile to make this as fool proof as possible but I suppose this pump must have
really blew a gasket and was spraying before I ever got there...

told them it had a year warranty and to turn it into their homeowners to get the wood floors
repaired.....
I will probably have to install some other brand cause this should not have blown out so quickly



Camera accessory Cameras & optics Lens Font Composite material
 

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philosopher and statesmen
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8,605 Posts
Discussion Starter · #4 ·
Eww it looks very plastic. Never touched a booster pump honestly… we do a lot of pressure reducing valves tho.

Sucks to have to deal with the consequences of failed parts. At least you have the peace of mind that your workmanship wasn’t the cause.

this think must have sprayed all over the closet cause it was wet about 4 feet away
and it must have somehow fixed itself because it was only dripping out the bottom when I got there
I had installed a bypass so it was no big deal tonight but it certainly ruined their oak flooring so its gonna
be an insurance claim on their insurance....

I was told that these were the nuts but I had my mis-givings...
Gonna install another brand if they are willing to at least pay for the parts.....
I have installed about 5 of these over the past few years and never heard a word
back from anyone......


Wood Building Brickwork Brick Floor
 

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philosopher and statesmen
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8,605 Posts
Discussion Starter · #6 ·
I’m confused by this piping honestly. Is that tee or those tees directional like the old style boiler tees? Like is the tee with the st 90 a check valve I guess is better way to express my bewilderment?
They are just copper tees ....You have to install a bypass like on a water softener in case the unit goes down and you
need to isolate it... like I had to do with the ****/y grundful unit today

also I Installed a extra swing check valve on the incoming line just in case the internal check
valve were to fail--- Its just a basic line going into the unit from the incoming line and then out to the house
 

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Premium Member
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502 Posts
Anyone have any experience with them or had troubles with a Grundfus booster pump??

We installed a grundfus booster pump in a tight area under a stairwell about
back in 2020 or maybe 2019 and the dam thing blew a gasket yesterday or
sometime earlier in the week....

When I installed the pump I went the extra mile and actually installed a water barrior
and half of a plastic cargo box to contain any future leaks.. and force them away from the
wood flooring nearby... ... If a water heater pan would have fit in this tight spot I might have
thrown one of them under this pump
I even used silicone to seal around the box and force the water to fall into the crawl space access inches away from
the pump....

But Instead of teh water falling into the crawl space like it should have done, it decided to go to the edje and
then walk back up the bottom side of the plastic barrior I installed and find its way into the wood work...

somethiing like what a dribble off a tub spout can do. go back up the spout and get behind the tile... o_O 😢

I went the extra mile to make this as fool proof as possible but I suppose this pump must have
really blew a gasket and was spraying before I ever got there...

told them it had a year warranty and to turn it into their homeowners to get the wood floors
repaired.....
I will probably have to install some other brand cause this should not have blown out so quickly



View attachment 133668
Your trouble came from the fact that you didn't disassemble and blueprint the pump straight out of the box before you installed it. Are you kidding me you probably got hosed by probablity, if you've used them before with no trouble and done your normal diligence anyway. Nothing you can do about it and don't go changing mfr's to something new and not proven just because. Maybe if you did find something better.
 

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I hope they don't try to get back at you. This situation must be a nervous ordeal.

The pump in your first picture has plastic nipples? It doesn't seem very sturdy and if it circulates hot water I would be afraid of it's longevity.
 

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philosopher and statesmen
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8,605 Posts
Discussion Starter · #9 ·
Your trouble came from the fact that you didn't disassemble and blueprint the pump straight out of the box before you installed it. Are you kidding me you probably got hosed by probablity, if you've used them before with no trouble and done your normal diligence anyway. Nothing you can do about it and don't go changing mfr's to something new and not proven just because. Maybe if you did find something better.

So you like to disassemble a pump and then put it back together before you install one??
I would like to watch that....

As far as the pump goes you follow the instructions you are given and that is about their is to them..

In hindsight I should have used the other brand...
 

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Premium Member
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So you like to disassemble a pump and then put it back together before you install one??
I would like to watch that....

As far as the pump goes you follow the instructions you are given and that is about their is to them..

In hindsight I should have used the other brand...
I was using sarcasm to make the point.
We’re Not supposed to HAVE TO check the mfr’s work so we don’t. You put real ‘givadamn’ into that job and you still got called called back.
Sucks but that’s what insurance is for.
 

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philosopher and statesmen
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8,605 Posts
Discussion Starter · #11 ·
I was using sarcasm to make the point.
We’re Not supposed to HAVE TO check the mfr’s work so we don’t. You put real ‘givadamn’ into that job and you still got called called back.
Sucks but that’s what insurance is for.

It was done two summers ago so I am out of the lop but I probably will
take care of them once the carnage and drying out is over with...

I KNOW that I gave them a water alarm to place inside the pan I built for them but
they never got around to doing it... I never brought this up with them yet....and it would
probably hit a bad nerve at this time
 

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Anyone have any experience with them or had troubles with a Grundfus booster pump??

We installed a grundfus booster pump in a tight area under a stairwell about
back in 2020 or maybe 2019 and the dam thing blew a gasket yesterday or
sometime earlier in the week....

When I installed the pump I went the extra mile and actually installed a water barrior
and half of a plastic cargo box to contain any future leaks.. and force them away from the
wood flooring nearby... ... If a water heater pan would have fit in this tight spot I might have
thrown one of them under this pump
I even used silicone to seal around the box and force the water to fall into the crawl space access inches away from
the pump....

But Instead of teh water falling into the crawl space like it should have done, it decided to go to the edje and
then walk back up the bottom side of the plastic barrior I installed and find its way into the wood work...

somethiing like what a dribble off a tub spout can do. go back up the spout and get behind the tile... o_O 😢

I went the extra mile to make this as fool proof as possible but I suppose this pump must have
really blew a gasket and was spraying before I ever got there...

told them it had a year warranty and to turn it into their homeowners to get the wood floors
repaired.....
I will probably have to install some other brand cause this should not have blown out so quickly



View attachment 133668
I've heard bad things about grundfos booster pumps like the one you installed,average life span is 2yrs before major things start happening to them,look into installing a simer brand booster pump,they are more expensive and much better
 

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philosopher and statesmen
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Discussion Starter · #13 ·
I've heard bad things about grundfos booster pumps like the one you installed,average life span is 2yrs before major things start happening to them,look into installing a simmer brand booster pump,they are more expensive and much better
Well, that is good to know.... it appears I installed this unit before the pandemic
maybe in mid 2019 so I am off the hook as far as paying for damages......

I never heard of a simmmer pump
 

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Pornstar, Service Plumber
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We install the Grundfos boosters if we want constant pressure/lack space for water storage.

Otherwise just install a Goulds jet pump and a well tank.
 

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philosopher and statesmen
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Discussion Starter · #18 ·

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Mark same deal here, we have had an issue with a Grundfos booster pump that developed a pinhole in the pump housing twice, once under warranty, replaced pump and new one did the same a couple years later. Ours was in a commercial mechanical room, so not as big a deal. I would say there is an issue with the pump housing for sure...Don't appear to be the exact same pump, but same issue...
 

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Mark same deal here, we have had an issue with a Grundfos booster pump that developed a pinhole in the pump housing twice, once under warranty, replaced pump and new one did the same a couple years later. Ours was in a commercial mechanical room, so not as big a deal. I would say there is an issue with the pump housing for sure...Don't appear to be the exact same pump, but same issue...
They are pure junk
 
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