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Is it ok to reinstall a garbage disposal that has been sitting unused for a year?

Asked January 28, 2019 by a homeowner in Plumbing (Deepak Phadnis)

I have a garbage disposal that has been sitting in my garage unused for a year. It was removed during a kitchen remodel and the contractor insisted upon installing a new one. The reason stated was the original was sitting usused for a month or so and the contractor's plumber indicated that he had seen lots of garbage disposals fail in those situations.

Ironically, the new disposal he installed has started leaking, with both the washer and the putty around the strainer pretty degraded. I don't know if that's why it case loose, or because of the vibration from operation.

Anyway, I need to reinstall the disposal and I am wondering if it is better to install my original one. It is a higher end model with several years of warranty left over. However, it has been sitting dry in my garage for more than a year.

Is there a high chance of failure if I reinstall that disposal? Is there anything I can do to prevent that or to reduce the risk?

Thanks,

Deepak

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    VNOC Handy ServicesContractorAugust 26, 2026

    Reinstalling a garbage disposal that has been sitting unused for a year can be done, but there are several factors to consider to minimize the risk of failure. First, inspect the disposal thoroughly for any signs of wear or damage, particularly the rubber seals and blades. If they appear dry or cracked, it’s likely best to replace the unit.

    Before reinstalling, you can try running some water through it and turning it on briefly to check for any unusual noises or leaks. If everything seems fine, you can proceed with the installation. However, if you notice any issues, it might be wise to invest in a new disposal, especially since you mentioned the new one has already developed leaks.

    In terms of costs, hiring a licensed plumber for installation can range from $100 to $250 depending on your location. This ensures that the installation is done properly and can help prevent future issues.

    As a next step, I recommend getting 2–3 local quotes on Handyman.com for both reinstallation of your original unit and potential new models. This will give you a clearer picture of your options and help you make the best decision.

    — Assisted answer

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