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Question DetailsAsked on 3/7/2016

How much does a grinder pump cost?

I may need a grinder pump for my house. How much does one cost?

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1 Answer


Below are links to a couple of prior similar questions - the key is whether you need a sewage lift pump, to pump the low elevation (typically basement) sewage up to about ground level where it will go into a normal gravity sewer to flow by gravity out to the septic system or street, or a much more expensive grinder pump which grinds the sewage up and is typically designed for much higher pressure - enough to lift the sewage 10-30 feet vertically say to pump uphill to septic system or sewer, or to pressure pump it to a distant septic tank or street sewer (larfger ones can pump up to a mile or so), or even to a pressurized public sewer where it might need up to 50-100 psi or thereabout output pressure.

Note these two links were for replacements - for new install you are likely taking on the order of at least $500 and probably more in the $1000 ballpark ADDITIONAL for the initial installation of a low-head (say not over 10' hydrualic head) lift pump, and commonly $2-4,000 for a pressurized grinder pump, in addition to costs stated in the links. Also, if you need a high-powered pressure grinding pump or lift-station pump (so commonly 1 to 1-1/2 horsepower or more) and your household power system is not adequate for that, upgrading your service can commonly run $1-3,000 depending on how undersized your system is and on whether it is outdated or not.

Obviously, before going into this, get several bids - and go with a brandname pump, not a Home Depot chinese special. I can tell you from experience (fortunately not in my house) that a cheapo plastic grinding pump station makes QUITE a mess when it ruptures.

One other thought - if going in the basement or crawlspace and there is a chance of that area being flooded because you are in a low lying areas or floodplain or have high groundwater that will flood the basement if your sump pump fails, consider gettign a fully submersible unit which will not be hurt if it goes under water - otherwise you are looking at a good few hundred to potentially $2000 or so if it fries from going under water.

Answered 4 years ago by LCD

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