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Question DetailsAsked on 8/5/2017

How much should it cost to replace grinder pump blade?

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Voted Best Answer

Depends on the make/model - some (mostly economy low-lift basement pumps lifting to the first floor only) are closed units that cannot be take apart and fixed - the case are glued shut at assembly, so replacement is the only option - $500 minimum and commonly closer to $1000 for economy or low-lift, more if higher head or high volume.

For repairable ones, many the cutter assembly is readily replaced - not much tougher than replacing a mower blade except for the removal from the canister and cleanup needed first, so around $250 range plus or minus $100 would probably handle it. Others require the entire unit be removed to a workbench and the motor housing at least partly disassembled (sometimes the wholelower housing comes off as a unit with blade attached, replaced as a unit) so in that case more labor and the part more difficult to come by, so probably more in the $400-600 range. Obviously, if certain the cutter/blade is the problem (rather than plugged piping or slipping blade or whatever) then if you can get the part that will save on the plumber's labor, because only rarely would they have the part in stock, and then onluy if they carry that brand. Most likely will have to be picked up from a plumbing supply house or ordered to be shipped from manufacturer, so most likely 2 trips by the plumber if you do not already have the part.

For this reason, commonly the cheaper units are just replaced right off rather than repaired - ends up about same cost and you end up with a totally new unit which hopefully will last around 10 years.

FYI - here are a couple of previous responses on total pump replacement, if needed:

Answered 3 years ago by LCD

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