Are you thinking about upgrading your dishwasher? You’re not alone. Learning how to replace a dishwasher is one of the most common DIY kitchen projects for homeowners.
Whether your old one has given up or you just want a newer, quieter, more efficient model, replacing it yourself can save hundreds in labor costs.
While the process is surprisingly straightforward, it does require a bit of care, a few basic tools, and a good step-by-step plan.
In this article, we’ll guide you through the dishwasher removal and installation process, covering how to safely manage water and electrical connections, properly level your new unit, and avoid common installation mistakes. We’ll also recommend some of the best dishwasher replacements currently available.
What You’ll Need Before You Begin Installation
Before you dive in, make sure you have all the dishwasher replacement tools needed and parts ready to go. Most of these can be found in a standard homeowner’s toolkit:
- Adjustable wrench or channel-lock pliers
- Phillips and flathead screwdrivers
- Level
- Bucket or towel (to catch water drips)
- Plumber’s tape or thread sealant
- Hose clamps
- New water supply line and drain hose (if not reusing the old ones)
- Power cord (if your dishwasher doesn’t come with one)
It’s always smart to review your manufacturer’s installation manual before starting, especially if you’re working with a model that has specific under-counter dishwasher installation steps or unique fittings.
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How to Remove the Old Dishwasher
Removing the old dishwasher takes about 30 minutes. Here’s how to do it safely and cleanly as part of your dishwasher removal and installation process.
- Turn off the power at the circuit breaker. You’re working with water and electricity, so safety comes first.
- Shut off the water supply. This is usually located under the sink.
- Disconnect the drain hose from the garbage disposal or sink drain. Keep a towel or small bucket ready for water left in the line.
- Unscrew the mounting brackets holding the dishwasher to the underside of your counter.
- Gently slide the dishwasher out from under the counter. Don’t be afraid to tilt it slightly if necessary to clear the legs.
Once removed, inspect the area for leaks, water damage, or corrosion before proceeding.
➜ Learn More: Standard Dishwasher Dimensions - Size Guide
Installing the New Dishwasher
Now for the fun part: getting your new dishwasher in place. Follow these under-counter dishwasher installation steps for a smooth install.
- Attach the water supply line. Connect the new braided stainless steel hose to the dishwasher’s inlet valve, ensuring a watertight seal by using plumber’s tape.
- Connect the power. Either plug in the power cord (for plug-in models) or hardwire according to the manufacturer’s instructions.
- Attach the drain hose. Route it through the cabinet opening to your disposal or drain connection.
- Slide the dishwasher into place. Carefully guide it under the countertop, making sure hoses and cords don’t kink or pinch.
- Secure the mounting brackets. Anchor the unit to the countertop or cabinet sides to keep it stable.
If you’re replacing a dishwasher of the same size, installation should take about two hours from start to finish.
➜ Learn More: The Hidden Value of Replacing Your Dishwasher and Disposal Together
How to Connect the Water Supply and Drain Lines Properly
Proper water and drain connections are essential to avoid leaks and flooding. Here’s how to connect water and drain lines for new dishwasher models safely:
- Water Supply: Connect the hot water line securely, but don’t over-tighten. Over-tightening can crack fittings or damage threads.
- Drain Line: Make sure the drain hose runs uphill from the dishwasher to a “high loop” or air gap near the sink to prevent backflow.
- Seal Connections: Use plumber’s tape on threaded joints and test for drips before pushing the dishwasher fully back into place.
Taking a few extra minutes here ensures years of trouble-free operation.
➜ Learn More: The Best Time to Buy a Dishwasher: Shopping Tips for Savings
How to Level and Secure Your Dishwasher for Proper Performance
A dishwasher that’s not level can cause leaks, uneven cleaning, and noisy operation. Learning how to level a dishwasher when installing it is a simple but crucial step.
- Place a carpenter’s level on the top front edge of the dishwasher.
- Adjust the leveling legs (usually located underneath the front kickplate) until the bubble on the level is centered.
- Tighten the lock nuts on the legs once the unit is perfectly balanced.
Finally, double-check that the door opens and closes smoothly and that the tub doesn’t shift. If your countertop is stone or another hard surface, side-mounting brackets can be used instead of top screws.
Common Mistakes to Avoid
Even confident DIYers make missteps during dishwasher removal and installation. Here are a few dishwasher replacement mistakes to avoid for a smoother experience:
- Forgetting to shut off power or water before starting.
- Skipping the drain hose “high loop”, this can cause dirty water backflow.
- Over-tightening fittings or using the wrong thread tape type.
- Pushing the dishwasher back without checking for kinks in hoses or cords.
- Forgetting to test for leaks before fully securing the unit.
A quick visual inspection and a short test run can save you hours of frustration later.
Final Checks: Ensuring Your Dishwasher Works Properly
Before declaring victory, it’s time for the final test. Here’s how to test a new dishwasher after installation properly:
- Run a quick wash cycle with no dishes inside.
- Check for leaks under the dishwasher and around all hose connections.
- Listen for unusual noises like rattling or water hammering.
- Ensure proper draining; water should flow smoothly into the disposal or drain line.
- Verify heating and drying by checking if the tub feels warm at the end of the cycle.
If everything checks out, reinstall the kickplate, wipe up any water, and you’re done.
Should You Replace a Dishwasher Yourself or Hire a Pro?
If you’re handy with tools and comfortable around plumbing and wiring, DIY installation can save $150–$300 in labor. Still, it’s worth comparing both approaches:
| Approach | Pros | Cons |
|---|---|---|
| DIY | Lower cost, flexible schedule, and the satisfaction of completing the project yourself | Requires basic plumbing or electrical knowledge and may take longer to complete |
| Professional Install | Fast, safe installation that is often backed by a workmanship guarantee | Higher upfront cost and the need to schedule an appointment |
A DIY dishwasher replacement cost estimate typically ranges from $25 to $50 for supplies if you already have tools. As for how long replacing a dishwasher takes, expect 1–3 hours, depending on experience.
Best New Dishwashers for Easy Installation and Top Performance
We found the top models that combine easy installation with powerful cleaning performance, making kitchen cleanup a breeze.
GE 24” Fingerprint-Resistant Stainless Steel Built-In Dishwasher
Shop GE 24” Built-In Dishwasher
This GE dishwasher combines quiet operation with effortless installation. Its front-control design and easy-mount brackets make it ideal for first-time installers.
The fingerprint-resistant stainless steel finish helps keep the exterior looking clean and polished with minimal maintenance, while the Steam + Sani cycle delivers a deeper, more hygienic clean for tough messes.
Top Features
- Fingerprint-resistant stainless finish
- Steam + Sani cycle for deep cleaning
- Energy Star® certified
LG 24” Stainless Steel Built-In Dishwasher
Shop LG 24” Built-In Dishwasher
The LG’s sleek design and powerful QuadWash system make it a great fit for any kitchen. It’s one of the easiest models to install under-counter, thanks to adjustable legs and a flexible drain setup.
With LoDecibel quiet performance, the LG dishwasher runs smoothly without disrupting your home, while SmartDiagnosis makes troubleshooting quick and stress-free if issues arise.
Top Features
- QuadWash for complete coverage
- SmartDiagnosis for quick troubleshooting
- LoDecibel quiet performance
KitchenAid 24” PrintShield Stainless Steel Built-In Dishwasher
Shop Nw KitchenAid 24” Built-In Dishwasher
KitchenAid’s PrintShield finish resists smudges and fingerprints, while the FreeFlex third rack adds flexible loading options.
Ideal for anyone who values top-tier build quality and smooth installation. The ProWash adaptive cleaning technology automatically adjusts settings for optimal results, ensuring consistently spotless dishes.
A durable stainless steel interior enhances drying performance while standing up to years of everyday use.
Top Features
- FreeFlex third rack
- ProWash adaptive cleaning technology
- Stainless steel interior
Maytag 24” Fingerprint-Resistant Stainless Steel Built-In Dishwasher
Shop Maytag 24” Built-In Dishwasher
Built with a powerful motor and rugged design, this Maytag dishwasher is made to last. Homeowners also appreciate its easy hookup process and reliable connections that help prevent leaks.
The Dual Power Filtration system helps break down food residue for cleaner dishes without pre-rinsing, while the Heated Dry option ensures dishes come out ready to use.
Top Features
- Dual Power Filtration system
- Heated Dry option
- Leak-detect sensor
Bosch 100 Series 24” Stainless Steel Front-Control Built-In Dishwasher
Shop Bosch 24" Front Control Built In Dishwasher
Known for quiet operation and meticulous engineering, Bosch delivers reliable performance, while the QuickConnect™ system helps ensure a fast and hassle-free installation.
With PrecisionWash smart sensors, the dishwasher automatically adjusts each cycle for optimal cleaning, while the EcoSilence motor delivers powerful performance with exceptional energy efficiency.
Top Features
- 50 dBA quiet performance
- PrecisionWash™ smart sensors
- EcoSilence™ motor system
Wrapping Up: Your Dishwasher Replacement Made Easy
Learning how to replace a dishwasher yourself isn’t as intimidating as it seems. With a few tools, some patience, and careful attention to details like leveling and leak testing, you can handle your own dishwasher removal and installation in just a couple of hours.
You’ll save money, gain confidence, and enjoy the satisfaction of a job well done, all while getting to know your new appliance inside and out.
For expert advice, excellent deals, and installation support, visit East Coast Appliance to explore today’s best dishwashers.
Frequently Asked Questions
You’ll need an adjustable wrench, screwdrivers, a level, plumber’s tape, a bucket, hose clamps, and possibly a new drain or water line. Always check your model’s installation guide for specific hardware.
Turn off power and water, disconnect lines, remove mounting screws, and slide out the old unit. Then connect the new dishwasher’s water, drain, and power before securing it and testing for leaks.
Use a carpenter's level to make sure the unit's legs are even. Run a test cycle to check for leaks and proper drainage before tightening all mounts.
Most DIY installs take 1–3 hours depending on your comfort level and whether you need to modify the connections.
You can if they’re in good condition and fit your new model, but it’s often safer to replace them with new hoses to prevent leaks.
DIY replacement typically costs $25–$50 for supplies, while professional installation can run $150–$300 depending on the complexity.
Why Trust East Coast Appliance?
Locally owned and operated since 1988, East Coast Appliance is the largest independent appliance dealer in Virginia. We sell it ALL — from new name-brand appliances to scratch-and-dent appliances to our very own refurbished appliances. Aside from our huge selection of every major brand and everyday low prices, what sets us apart from our competitors is that we service what we sell and that we are locally owned and operated with factory-trained associates. And if you’re a local, great news: East Coast Appliance is committed to providing the absolute lowest prices on the same available brand and model — simply bring in the ad of the local retail competitor while the lower price is in effect, and you'll receive your price match.
Shop Dishwashers at East Coast
There is a reason we are dubbed “The Discount King” — for unbeatable deals, shop dishwashers online at East Coast Appliance. Our friendly associates are always happy to help you find the best dishwasher for your kitchen, whether you call us or use our online chat feature. Better yet, stop by one of our showrooms to see why we are the best appliance store in Virginia. Visit us today!