How to replace a broken garbage disposal yourself
This guide explains how to replace a broken garbage disposal yourself, offering step-by-step instructions for St. Louis residents.

A broken garbage disposal can disrupt your kitchen routine, but replacing it yourself is a feasible task. With the right tools and guidance, you can replace your garbage disposal in a few hours, restoring functionality to your kitchen.
This article outlines the process of replacing a garbage disposal, including signs that indicate a need for replacement, necessary tools, and a step-by-step guide tailored for homeowners in St. Louis.
Understanding Garbage Disposals
A garbage disposal is an appliance that shreds food waste into small pieces, allowing it to be washed away through the plumbing system. These devices are essential for maintaining a clean and odor-free kitchen.
Signs Your Garbage Disposal Needs Replacement
Several signs may indicate that your garbage disposal needs replacement rather than just repair. If you experience persistent clogs, unusual noises, or leaks, it may be time to consider a replacement.
- Persistent Clogs: If your disposal frequently clogs despite proper use, it may be failing.
- Unusual Noises: Grinding or rattling sounds can indicate internal damage.
- Leaks: Water pooling under the disposal suggests a broken seal or crack.
In St. Louis, older homes may frequently face these issues due to outdated plumbing systems.
Tools and Materials Needed
Before you begin replacing your garbage disposal, gather the following tools and materials:
- Screwdriver (flathead and Phillips)
- Pliers
- Bucket
- New garbage disposal unit
- Plumber's putty
- Safety goggles
Having these tools ready will streamline the process and ensure you are prepared for any challenges.
Step-by-Step Replacement Process
Follow these steps to replace your garbage disposal:
- Turn Off the Power: Ensure the power to the garbage disposal is turned off at the circuit breaker.
- Disconnect the Drain: Use a bucket to catch any water and disconnect the drain pipe from the disposal.
- Remove the Disposal: Unscrew the mounting assembly and detach the disposal from the sink.
- Install the New Disposal: Follow the manufacturer's instructions to install the new disposal, applying plumber's putty where necessary.
- Reconnect the Drain and Power: Reattach the drain pipe and restore power to the unit.
For those in St. Louis, consider the local plumbing codes when performing this installation, as they can vary.
Common Mistakes to Avoid
When replacing a garbage disposal, avoid these common mistakes:
- Neglecting Safety: Always turn off the power before starting the replacement.
- Skipping the Manual: Each model has specific installation requirements; always refer to the manual.
- Improper Sealing: Ensure all seals are tight to prevent leaks.
When to Call a Professional
Some situations warrant professional assistance. If you encounter complex plumbing issues or if the electrical connections seem beyond your expertise, calling a professional like garbage disposal repair experts can save you time and potential headaches.
APPLIANCE REPAIR PROS offers reliable service in St. Louis for those who prefer expert help. Our technicians can troubleshoot and resolve any issues with your garbage disposal efficiently.
Frequently Asked Questions
1. How much does it cost to replace a garbage disposal in St. Louis? The typical cost for replacing a garbage disposal ranges from $150 to $300, depending on the model and labor costs.
2. Can I install a garbage disposal myself? Yes, many homeowners can install a garbage disposal themselves with the right tools and instructions.
3. How long does it take to replace a garbage disposal? Replacing a garbage disposal usually takes about 1 to 2 hours for someone with basic DIY skills.
4. What if my new garbage disposal still doesn't work? If the new unit doesn't function, check the power supply and connections. If issues persist, consult a professional.
5. Are there any maintenance tips for garbage disposals? Regularly running cold water during use and avoiding fibrous or starchy foods can help maintain your disposal's performance.
Get Help with APPLIANCE REPAIR in St. Louis
If you need assistance with your garbage disposal or any other appliance, contact APPLIANCE REPAIR PROS. We provide expert service to residents in St. Louis, ensuring your home runs smoothly. Call us at 8448331208 for help today.