How to Replace a Dishwasher Drain Hose (Step-by-Step, 2026)
Replacing a dishwasher drain hose is the easiest major repair on a dishwasher: it takes 30 to 45 minutes, costs $15 to $40 for the part, and requires nothing more than a screwdriver and pliers. The hose connects the drain pump to either a garbage disposal or a standpipe under the sink. When it’s cracked, blocked, or kinked, water stays in the tub. Before ordering a new hose, run the 10-minute inspection below to confirm the hose is the problem and not the pump or filter.
For the full drainage component picture, see Dishwasher Drain Components: Parts Guide (2026).
Quick answer
Replace the drain hose if you observe:
- Visible cracks, splits, or brittle hardened sections on the hose body
- Water leaking from either hose connection point
- A permanent kink that cannot be straightened and stays kinked after repositioning
- A confirmed blockage you cannot clear by flushing (uncommon in a plain corrugated hose, but happens)
Do NOT replace the hose for a simple kink. A kinked hose can be repositioned and secured to prevent re-kinking. Replacement is only needed for structural failure. A kink fix takes 5 minutes and costs nothing; see Dishwasher Drain Hose Kinked? How to Fix It (2026) for that procedure.
What this component does and how it fails
The drain hose is a corrugated flexible tube (typically 5/8-inch interior diameter) that runs from the drain pump outlet, under the sink cabinet, and connects to either:
- A garbage disposal’s dishwasher inlet port
- A standpipe (direct drain to household drain line)
- An air gap fitting on the countertop (in states requiring one)
Standard hose length is 6 to 10 feet. Hoses longer than 10 feet create backpressure against the pump and increase the risk of drainage failure. For routing options, see Why Is My Dishwasher Not Draining? Quick Fixes (2026).
How it fails:
- Kinking: Most common failure mode. The hose bends sharply during installation or when someone moves items under the sink. Water flow partially or fully blocks.
- Cracking/hardening: The corrugated plastic becomes brittle over 8 to 12 years and develops small cracks. These cause slow leaks rather than full drainage failure.
- Connection failure: The hose clamp at either end loosens or the fitting cracks. Water drips or sprays at the connection point.
- Blockage: Food debris, grease, or mineral buildup inside the hose. Less common than filter clogs, but possible in hoses with multiple bends.
How to test it (tools + 10 min)
Test 1: Visual inspection (5 min, no tools)
- Open the cabinet under the sink
- Locate the corrugated drain hose connecting the dishwasher to the disposal or standpipe
- Trace the hose along its full length; look for kinks, sharp bends, or visible cracks
- Check both connection points for signs of water damage (white mineral deposits, rust, stains)
- A kinked hose is visible immediately; a cracked hose may require running a cycle to see water seeping out
Test 2: Flow test (5 min)
- Disconnect the drain hose at the disposal or standpipe end (loosen the hose clamp)
- Place the open end in a bucket
- Start a drain cycle (press Cancel/Drain for 3 to 5 seconds on Whirlpool-family brands)
- If water flows freely from the open hose end: the hose is clear, and the drainage problem is at the disposal/standpipe connection or further downstream
- If no water exits or flow is weak: the blockage is in the hose or pump
Test 3: Blow test (2 min)
- Disconnect the hose at both ends
- Blow through the hose end-to-end
- Clear airflow: hose is open; structural condition check still needed
- Blocked airflow: clear the blockage before deciding on replacement
Step-by-step replacement (30-45 min)
Tools: Phillips screwdriver, pliers or nut driver, hose clamp driver or flathead, towels, bucket, flashlight
Time: 30 to 45 minutes
Step 1: Prep (5 min)
- Turn off power at the circuit breaker
- Turn off the water supply valve under the sink (not strictly required for hose replacement, but good practice)
- Remove the lower dish rack from the dishwasher
- Place towels under the sink cabinet to catch drips
Step 2: Disconnect the old hose at the sink end (5 min)
- Locate the drain hose where it connects to the garbage disposal or standpipe
- Loosen the hose clamp with a flathead screwdriver (counterclockwise) or a nut driver if it’s a worm gear clamp
- Pull the hose off the fitting; have a bucket ready (1 to 2 cups of water may drain out)
- If connected to an air gap, disconnect at the air gap fitting first, then at the disposal
Step 3: Disconnect the old hose at the pump end (10 min)
- Open the dishwasher and remove the kick panel (two screws at the bottom front)
- The drain hose connects to the pump outlet at the bottom of the dishwasher
- On most models, this connection is accessible from the front with the kick panel removed
- Loosen the hose clamp and pull the hose off the pump outlet
- Pull the entire old hose out through the cabinet
Step 4: Route the new hose (5 min)
- Feed the new hose through the same path as the old hose
- The hose must form a high loop: route the hose up along the underside of the counter, secure it at the highest point with a cable tie or hose clip, and then route it down to the connection point
- The highest point of the loop must be at least 20 inches above the floor (measure before securing)
- If an air gap is required by your local code, route through the air gap fitting
Step 5: Connect at the pump end (5 min)
- Push the hose onto the pump outlet fitting until it seats fully (usually 1 to 1.5 inches)
- Slide the hose clamp over the connection point and tighten securely
- Do not overtighten spring clamps: they snap at full compression; stop when the hose is firmly gripped
Step 6: Connect at the sink end (5 min)
- Push the hose onto the disposal inlet or standpipe fitting until it seats
- Tighten the hose clamp
- For garbage disposal connections: verify the disposal’s dishwasher knockout plug was removed before connecting
Step 7: Test (10 min)
- Restore power
- Turn on water supply
- Run a short wash cycle (Quick Wash setting)
- Watch the drain phase for water exiting properly
- Check under the sink during and after the cycle for any leaks at both connection points
See also Dishwasher Drain Pump Replacement: Cost + DIY Guide (2026) if you found the pump failing during this diagnosis. And Dishwasher Check Valve: Testing + Replacement Guide (2026) if water drains but then returns to the tub.
Part numbers and prices by brand
Most dishwasher drain hoses use standard 5/8-inch ID corrugated plastic construction. Universal replacement hoses ($12 to $20 at hardware stores) fit most brands. OEM hoses are more expensive but guaranteed to fit.
| Brand | OEM hose part number | OEM cost | Universal alternative |
|---|---|---|---|
| Whirlpool | W10542302 | $22-$30 | 5/8” corrugated, 6-7 ft |
| Maytag | W10542302 | $22-$30 | Same as Whirlpool |
| Samsung | DD97-00236A | $20-$35 | 5/8” corrugated, 6-7 ft |
| Bosch | 00422010 | $25-$45 | 5/8” corrugated, 6-7 ft |
| GE | WD24X10064 | $20-$35 | 5/8” corrugated, 6-7 ft |
| Frigidaire | 5303280829 | $18-$30 | 5/8” corrugated, 6-7 ft |
| LG | 5214DD2001A | $20-$35 | 5/8” corrugated, 6-7 ft |
For OEM parts, search your model number on AppliancePartsPros or RepairClinic. The model number is on the label inside the door, on the left side.
DIY vs. pro cost comparison
| Approach | Part cost | Labor | Total |
|---|---|---|---|
| DIY (universal hose) | $12-$20 | $0 | $12-$20 |
| DIY (OEM hose) | $18-$45 | $0 | $18-$45 |
| Professional | $18-$45 | $50-$100 | $68-$145 |
The national average for hose replacement done professionally is $50 to $100 in labor, per 2026 Fixr data. Total professional cost is $68 to $145 depending on brand and access difficulty. This is one of the most affordable dishwasher repairs available. For context, a full drain pump replacement runs $150 to $400 professionally. If both the hose and pump are failing, consider replacing both at once to avoid paying a service call fee twice.
For the full connection to the disposal, see Dishwasher to Garbage Disposal Connection: How-To (2026) for routing requirements and knockout plug verification.
Frequently asked questions
How do I know if my dishwasher drain hose needs replacing?
Replace the drain hose if you see visible cracks, brittleness, or hardening in the hose material; if the connection fittings have cracked or separated; or if the hose leaks at the junction points during the drain cycle. A simple kink does not require replacement: reposition the hose and secure the high loop. Hoses that are still structurally sound but have debris blockages can be cleared by disconnecting and flushing, not replacement.
How long does a dishwasher drain hose last?
A dishwasher drain hose typically lasts 8 to 12 years before showing brittleness or cracking. Hoses that are repeatedly kinked due to poor routing or movement under the sink may fail earlier. The connection clamps often show wear before the hose body does: inspect the clamp points annually for mineral deposits or rust.
Can I use a universal drain hose on any dishwasher?
Yes, in most cases. Standard dishwasher drain hoses have 5/8-inch interior diameter fittings that fit standard hose clamps and connection points. Universal hoses ($12 to $20 at hardware stores) fit most Whirlpool-family, GE, Samsung, LG, and Frigidaire models. For Bosch and Miele, we recommend OEM hoses because the connection angles and corrugation pitch may differ.
Does the drain hose need a high loop?
Yes. Without a high loop (or an air gap), dirty drain water can siphon back into the dishwasher tub. The high loop routes the drain hose up to the underside of the counter (at least 20 inches above the floor) before routing it down to the connection point. This physical barrier prevents backflow. California and a few other states require an air gap instead of a high loop; check your local plumbing code.
What size is a standard dishwasher drain hose?
Most residential dishwashers use drain hoses with a 5/8-inch (0.625-inch) interior diameter. Some models use 1/2-inch or 3/4-inch connections at specific ends; when buying a replacement, verify both connection ends of the old hose before ordering. Universal hoses sold at hardware stores are typically 6 to 8 feet long and accommodate 5/8-inch connections at both ends.