Kitchen · Free DIY guide

Fix a Leaking Dishwasher Hose

A practical homeowner guide to replacing a dishwasher drain hose. Follow the safety checks, confirm the exact part or model, and test your work before considering the repair complete.

ModerateNo signupUSA homeowner guide

Before you start

Safety checkpoint: Stop if leak reaches electrical wiring or floor is damaged. Follow applicable local codes and the manufacturer's instructions.

Measure and photograph the existing installation before buying replacement parts. Confirm dimensions, model numbers, and compatibility rather than assuming that parts are universal.

Tools and supplies

Towels
flashlight
replacement hose

Tools & Materials for This Project

Choose a retailer to check current product options. Product cards are generated from the central FixCostCheck catalog.

Discounts & coupons: We are working toward verified retailer partnerships. No active coupon is available yet.

Retailer links are currently ordinary links. After affiliate approval, links and licensed product images can be updated once in the central catalog and reused across all guides.

Also prepare eye protection, a clean workspace, and any product-specific tools or fittings listed in the installation manual.

Step-by-step: Replacing a dishwasher drain hose

Read the entire procedure before starting. Use the product manual and local code requirements where they are more specific.

Turn off the dishwasher circuit breaker and close the water supply if you need to move the machine.
Consult the exact dishwasher installation guide for hose routing, clamps and whether a high loop or air gap is required by local code.
Place towels and a shallow pan under the sink connection; disconnect the drain hose at the disposal or branch tailpiece.
If the dishwasher must slide out, protect the floor and check for short electrical, water and drain connections before moving it.
Remove the old hose clamps, route a compatible new hose without kinks or pinch points, and secure it away from sharp edges.
Reconnect to the approved dishwasher inlet; on a new disposal, verify the dishwasher knockout plug was removed before attaching the hose.
Run a drain cycle and inspect the entire visible route for drips and proper draining.

Stop and hire a qualified professional if you discover hidden leaks, damaged wiring, unsafe access, structural damage, or a condition beyond this guide.

Common mistakes to avoid

Do not bypass a required air gap or manufacturer-specified high loop.
Do not pull the dishwasher against attached wiring or plumbing.
An incorrect hose size or loose clamp can cause hidden cabinet damage.

Helpful video tutorials

Watch a relevant demonstration before starting. Check the model, safety steps and local code requirements for your project.

Video tutorials for this repair are being reviewed. No unverified video links are displayed.

How to Fix a Leaking Dishwasher Hose Under the Sink

HomeMembership — YouTube candidate; playback and content not independently reviewed.

Watch video ↗

Replace whirlpool dishwasher drain hose - DIY

DIY with Michael Borders — YouTube candidate; playback and content not independently reviewed.

Watch video ↗

How to Replace the Drain Hose on a Dishwasher

eSpares — YouTube candidate; playback and content not independently reviewed.

Watch video ↗

Direct links are identified as such. Search cards are not reviewed videos. Videos are hosted by their respective creators.

DIY or hire a professional?

Get a second opinion if the work exposes hidden damage, requires a permit, or goes beyond your experience. A professional quote should explain labor, materials, disposal, warranty, site conditions and any permits. Compare identical scopes, not just total prices.

Check your quote →

Our current quote checker uses illustrative figures; ZIP-specific pricing has not been validated.

← Browse all 100 guide topics