How to Add a New Dishwasher to a Kitchen

Introduction

Adding a new dishwasher to your kitchen can be a great way to make cleaning up after meals much easier. However, installing a dishwasher does require some planning and preparation. This comprehensive guide will walk you through all the steps needed to successfully add a new dishwasher to your kitchen.

Choose the Right Dishwasher Model

The first step is selecting the right dishwasher model for your needs and kitchen layout. Here are some key factors to consider:

Dishwasher Type

There are two main types of dishwashers:

Freestanding – This is a standalone unit with finished exterior sides that can be slotted into place under the counter. It needs to be connected to plumbing and electricity.
Built-in – This type is designed to fit flush within your cabinetry and match the rest of the kitchen decor. It has unfinished sides that will be hidden by cabinet panels once installed.

Size and Capacity

Make sure to choose the right size dishwasher for your household. Standard sizes are 24 inches wide or 18 inches wide for small spaces. The interior capacity is measured by place settings, usually ranging from 6 to 16 place settings. Considering how many dishes you typically have to wash will help determine the right capacity.

Wash Cycles

Look for the wash cycles you need. Popular cycles include normal, heavy, light, rinse only, pots and pans, and sanitizing. Some dishwashers also have quick wash options.

Energy Efficiency

Check the Energy Star rating to find the most water and energy efficient dishwasher models. This can save a lot on utility bills over time.

Special Features

High-end dishwashers can come with extra features like smart technology to monitor cycles, ultra-quiet operation, hidden touch controls, adjustable racks, and stainless steel interiors. Decide if any special features are worth the extra cost.

Budget

Dishwasher prices range from about $300 on the low end to $2,000 or more for high-end models. Set a budget before shopping so you can narrow down the options.

Measure Your Space

Once you’ve picked out some dishwashers you’re interested in, it’s crucial to measure your existing space to ensure the new dishwasher will actually fit.

Here are the key measurements you need:

Height – Standard counter height is 36 inches. Measure from the floor to the underside of the counter to confirm. The dishwasher height must be less than this measurement.
Width – Standard dishwashers are either 24 inches or 18 inches wide. Double check the width of the space in your cabinetry or under the counter where you plan to install the dishwasher.
Depth – Dishwasher depths range from about 22 to 26 inches. Carefully measure how far back the space extends from the front of the cabinets to the wall.
Door opening – Measure the maximum width of the opening that the dishwasher door will need to fully open. This is usually the distance from the edge of the countertop to the nearest adjacent cabinet or wall. Standard door opening width is 15 inches.

Also check for plumbing, wiring, and other obstructions in the space that could impact installation.

Gather Tools and Materials

Once you know the new dishwasher will fit, gather the necessary tools and materials for installation:

Tools

Tape measure
Level
Adjustable wrench
Screwdriver
Pliers
Wire stripper
Utility knife
Flashlight
Bucket
Safety gloves and eye protection

Materials

Dishwasher
Dishwasher hookup kit (water line, drain line, 90° elbow, hose clamps)
Electrical cable or power cord
Shut-off valve for water line
Pipe sealant or Teflon tape
Possible cabinet brackets or mounting hardware

Turn Off Water and Power Supply

Before beginning installation, you need to turn off the water supply line and power supply to the dishwasher area.

Locate the shut-off valve for the hot water line that will connect to the dishwasher. Turn the valve clockwise to shut off the water.

Next, turn off electrical power at the circuit breaker for the kitchen. Make sure power is off by testing with a non-contact voltage tester.

Shutting off water and power is an important safety precaution when working with electrical and plumbing connections.

Disconnect Old Dishwasher

If you’re replacing an existing dishwasher, the next step is disconnecting it.

Start by detaching the old water and drain lines. Place a bucket under the lines to catch any remaining water.

Unplug the electrical cord or disconnect the wiring from the junction box.

Finally, remove any brackets or screws holding the old dishwasher in place. Carefully pull it out from the cabinet.

Prepare Electrical and Water Lines

With the old dishwasher removed, the space should be prepped for the new electrical and water connections.

For the electrical:

Extend the electrical cable or power cord through the access hole in the back of the cabinet. Leave at least 18 inches of wire to allow connections.
Make sure the wiring will reach the junction box on the dishwasher once it’s installed.

For the water line:

Install a shut-off valve on the hot water supply line.
Attach the 90° elbow fitting.
Connect one end of the new water supply line to the elbow.
Run the free end through the cabinet access hole, leaving some extra length.

Position Dishwasher

Bring the new dishwasher into position, lining it up inside the cabinet space. Don’t push it fully back yet.

Make sure the door opens freely without hitting adjacent cabinets.

Use a level on top of the dishwasher to ensure it sits level side-to-side and front-to-back. Adjust the leveling feet under the dishwasher if needed.

Connect Water Line

With the dishwasher positioned correctly, connect the water supply line:

Apply pipe sealant or Teflon tape to the free end of the water line to prevent leaks.
Attach the water line to the inlet valve on the back of the dishwasher. Tighten securely with pliers.
Slowly turn on the shut-off valve and check for leaks. Tighten any connections if needed.

Connect Drain Hose

The dishwasher drain hose needs to connect to the sink drain pipe or garbage disposal:

Locate the drain port on the side or back of the dishwasher. Remove any shipping plugs.
Attach the provided drain hose to the port. Tighten the clamp securely.
Run the free end of the hose to the sink drain pipe. Use hose clamps to securely fasten in place.
Arrange the hose with a high loop to prevent backflow into the dishwasher.

Connect Power Supply

Next, make the electrical connections:

Insert the cable or cord through the junction box access hole.
Attach the black hot wire to the black lead in the box.
Connect the white neutral wire to the white lead.
Ground the green or bare copper wire to the green grounding screw.
Secure the cable clamp.
Check that all wire nuts are tight and no bare wire is exposed.

Secure Dishwasher

It’s now time to secure the dishwasher into its final position:

Slide the dishwasher back fully so the edges are flush with the surrounding cabinetry. Don’t pinch or crimp any hoses/cords.
If needed, install mounting brackets into the adjacent cabinets.
Insert screws through the dishwasher brackets into the cabinet brackets to lock everything securely in place.

Test Operation

Before sliding the dishwasher back into place, it’s important to test that it is functioning properly:

Turn on the hot water supply and power.
Open the dishwasher door and remove any packing material.
Select a wash cycle and start it to verify the dishwasher fills, washes, and drains correctly.
Check for leaks at all connections. Tighten if needed.
Confirm the detergent dispenser opens and closes properly.
Run through all the wash cycles to ensure proper operation.

Attach Panel

For built-in models, a custom cabinet door panel will need to be attached to the dishwasher front:

Remove the existing door by taking out the screws or release latches. Lift off carefully.
Hold your custom panel up to the brackets on the dishwasher front.
Attach with screws from inside the dishwasher tub. Don’t overtighten.
Adjust so the panel is centered and flush with no gaps.

Conclusion

Adding a new dishwasher can make cleaning up daily dishes a total breeze. Just follow this process to ensure proper installation:

Select an appropriately sized model for your space and needs.
Gather all necessary tools and materials for the install.
Shut off water and power to the area first as a safety precaution.
Disconnect and remove an old dishwasher if replacing.
Connect the new electrical, water, and drain lines securely.
Position, level, and mount the dishwasher into place.
Test operation thoroughly before sliding into the cabinet.
Attach any front custom panels for a built-in look.

Your new dishwasher will be ready to tackle piles of dirty dishes with no trouble at all! Let this comprehensive guide make the installation process smooth and successful.

Frequently Asked Questions About Adding a New Dishwasher to a Kitchen

Q: What are the main types of dishwashers?

A: The two main types are freestanding, which is a standalone unit, and built-in, which is designed to integrate seamlessly with surrounding cabinetry.

Q: How do I determine the right size dishwasher for my space?

A: Carefully measure the height, width, and depth of the area the dishwasher will be installed. Also check that you have adequate room for the door to fully open.

Q: Do I need any special tools to install a dishwasher?

A: Basic tools like wrenches, screwdrivers, pliers and wire cutters are needed. For connecting water lines, pipe sealant and tools like a utility knife help.

Q: How difficult is it to install a dishwasher on your own?

A: With some basic DIY skills, installing a dishwasher is very manageable. The electrical, plumbing and mounting steps are straightforward but do require attention to detail. Consider having a second person to assist.

Q: What connections need to be made when installing a dishwasher?

A: New dishwasher installations require hooking up the water supply line, drain line, and electrical connections. Shut-off valves and junction boxes facilitate these connections.

Q: Should I install a garbage disposal before or after the dishwasher?

A: It’s best to have the garbage disposal in place first so that the dishwasher drain hose can be connected to it directly.

Q: How do I attach a custom cover panel to a built-in dishwasher?

A: Remove the existing door first, then hold your panel flush to the front brackets. Attach securely using screws through the interior tub brackets.

Q: What should I do if my new dishwasher won’t turn on?

A: First check that the power supply is live and connected properly. Also verify the water line shut-off valve is open to allow water flow. If issues persist, contact the manufacturer.

How to Add a New Dishwasher to a Kitchen – Step-by-Step Instructions

Adding a dishwasher to your kitchen can help save hours of time washing dishes by hand. With some planning and preparation, you can successfully install a new dishwasher on your own. Here is a step-by-step guide walking through the entire process:

Step 1: Turn Off Water and Power

The first step is to turn off the water supply and power source to the area under the sink where you’ll be installing the new dishwasher. Locate the shut-off valve for the hot water line and turn it clockwise to shut off water flow. Also, go to your electrical panel and flip the circuit breaker for the kitchen to turn off power.

Step 2: Detach Old Dishwasher

If there is an existing dishwasher you’ll be replacing, start by disconnecting it. Detach the old drain line from the sink plumbing. Unscrew brackets securing the dishwasher in place. Unplug the electrical cord or wiring connections. Carefully pull out the old unit.

Step 3: Prep Electrical and Water Hookups

Run new electrical cable and water line through the access holes in the cabinet. Leave plenty of extra length for connections. Install a shut-off valve on the hot water line. Connect a 90° elbow fitting to the valve.

Step 4: Position New Dishwasher

Bring the new dishwasher into place, aligned inside the cabinet. Don’t push fully back yet. Confirm the door opens freely and the unit sits level. Adjust the leveling feet underneath if needed.

Step 5: Connect Water Supply

Attach the water supply line from the elbow to the inlet valve on the dishwasher. Make sure to use pipe sealant on threads to prevent leaks. Slowly turn on the shut-off valve and check for any drips. Tighten if needed.

Step 6: Connect Drain Hose

Attach the provided drain hose to the dishwasher drain port. Run the hose to the sink plumbing. Use hose clamps to secure in place. Arrange a high loop in the hose to prevent backflow.

Step 7: Connect Electrical Wires

Insert the new electrical cable through the dishwasher’s junction box. Connect the matching colored wires: black to black, white to white. Attach the ground wire. Secure the connections and cable clamps.

Step 8: Mount Dishwasher

Slide the dishwasher fully back into the cabinet space. Install mounting brackets into adjacent cabinets if needed. Insert screws through dishwasher brackets into cabinet brackets to lock in place.

Step 9: Test Dishwasher

With water and power on, select a wash cycle and start the dishwasher. Verify it fills, washes, and drains properly. Check for leaks. Run through all cycles to ensure the dishwasher is functioning correctly before finishing the install.

Step 10: Attach Front Panel

For built-in models, remove the existing door. Hold your custom panel against the front brackets and attach screws securely through the interior tub panel. Adjust so the panel sits flush.

Following these steps carefully will ensure your new dishwasher is properly installed and ready to use!

Tips for Choosing a New Dishwasher

Selecting the right dishwasher model for your kitchen and household needs is an important first step in the installation process. Consider the following tips:

Take measurements of the installation space so you choose a properly sized unit. Standard widths are 18 or 24 inches.
Decide if you want a freestanding or built-in look. Freestanding units function as standalone appliances with finished exteriors.
Determine the wash cycles and special features you need. Popular cycles include pots and pans, sanitizing, quick wash. Upgrade options include ultra-quiet operation, WiFi connectivity, adjustable racks, stainless steel interiors.
Check the Energy Star rating and estimated yearly energy cost to find the most efficient dishwasher models. This can save a lot on utility bills over time.
Choose a reputable brand known for reliability and positive reviews, like Bosch, KitchenAid, Miele, etc. Read reviews and complaints thoroughly.
Set a budget for the purchase price. Dishwasher prices range from about $300 on the low end to over $2000 for high-end models. Find the best value for your budget.
Estimate if professional installation may be needed. If you have limited DIY experience, complex hookups, or a custom cabinet front, you may want to hire assistance.

Carefully weighing these factors will help you select the ideal new dishwasher that meets your space requirements, budget, and functionality needs.

Safety Tips for Dishwasher Installation

Proper safety precautions need to be taken when installing a dishwasher due to the electrical and plumbing work involved:

Always turn off the hot water supply and power source to the area before beginning. Use a non-contact voltage tester to confirm power is off.
Wear protective gloves, eye wear, and non-slip shoes during installation. Have a first aid kit available.
Use extreme care when handling electrical connections. Confirm all wiring is correct and properly secured.
Take time making watertight plumbing connections. Improper installation can lead to leaks and water damage over time.
Ensure the legs are adjusted so the dishwasher sits level. Unlevel appliances can shift or tip.
Take care when lifting and moving the dishwasher into place. Use an appliance dolly and get a helper if needed.
Watch for sharp edges and brackets. Wear long sleeves and pants to avoid cuts and scratches.
Don’t attempt installation if you have any doubts about connecting wiring or plumbing properly. Consider hiring a professional to avoid safety risks.
Verify all connections are tight and properly mounted before re-energizing the power and water.
Keep children and pets away from the work area during the entire installation process.

Following good safety practices is crucial when adding any major appliance. Take your time, be cautious, and call in help if needed.

Troubleshooting Common Dishwasher Installation Problems

Despite best efforts, some issues can pop up when installing a new dishwasher. Here are troubleshooting tips for common problems:

Dishwasher won’t turn on:

Verify the circuit breaker and dishwasher power connection are energized. Reset