plumber installing a dishwasher

Do You Need A Plumber To Install A Dishwasher?

Installing a dishwasher can be an exciting addition to any home, but it can also be a daunting task for those who are not familiar with plumbing and electrical work. One of the most common questions that homeowners ask is “Do you need a plumber to install a dishwasher?“.

Despite the confidence some homeowners might have to tackle dishwasher installation themselves, experts usually advise hiring a licensed plumber. Such professionals ensure safety and correct execution, particularly when pre-installation requires any plumbing or electrical work.

It’s usually a good call to hire a plumber or let the retailer manage the installation. This step ensures proper fittings and connection, saving you from future plumbing or electrical mishaps.

Understanding Dishwasher Installation

The installation of a dishwasher might seem straightforward to those with the necessary skills and tools. However, you must follow certain rules and guidelines to ensure safe and compliant installation.

Plumbing and Electrical Requirements

In Queensland, licensed professionals must handle most plumbing and electrical work. So, if your dishwasher installation demands any new plumbing or electrical wiring, you should hire a licensed plumber and electrician.

Cabinet Void Requirements

When installing a dishwasher, you need to confirm that the cabinet void aligns with specified requirements. For instance, the Queensland building code prohibits installing plumbing fittings and electrical appliances within the same cabinet void.

This stipulation calls for the installation of the power points and supply and drainage pipes inside the next cabinet. The dishwasher’s cables and pipes must run through a hole of approximately 150mm x 100mm, and cut through the cabinet into the dishwasher void. It is also advisable to seal benches to protect them from steam damage.

Warranty Considerations

Many dishwasher warranties require professional installation by a licensed plumber. Not adhering to this requirement could void your warranty.

Incorrect installations can damage the dishwasher or other appliances in your home. Therefore, it’s vital to ensure that a qualified and experienced professional carry out the installation.

What the QBCC Says about Installing a Dishwasher

According to the Queensland Building and Construction Commission (QBCC), replacing an existing dishwasher can be done by the property owner as long as there are no alterations to the existing plumbing setup.

However, installing a new dishwasher when there previously was not one installed requires a licensed plumber and electrician. This is because most plumbing work undertaken in Queensland is regulated.

It is important to note that even if the installation of a new dishwasher appears to be a simple task, it still needs to meet the minimum standards of work under the legislation. Therefore, it is recommended to hire a licensed plumber to ensure that your dishwasher installation remains compliant.

If you are unsure whether your dishwasher installation requires a licensed plumber, you can refer to the QBCC’s DIY plumbing guide. This guide outlines the requirements for different categories of regulated plumbing work and helps you identify which work is notifiable work.

Potential Risks of DIY Dishwasher Installation

Some homeowners might feel tempted to install a dishwasher themselves to reduce costs. However, DIY installation carries potential risks that you should consider.

Water Damage

One of the main risks of DIY dishwasher installation is causing water damage to your home. If the water supply and drainage lines are not connected correctly, it can lead to leaks and potential flooding, resulting in expensive repairs or structural damage to your home.

Incorrect Installation

Another risk of DIY installation is incorrect setup. An improperly installed dishwasher may not function well and even become a safety threat. For instance, if the dishwasher isn’t level, it could leak or fail to clean dishes effectively.

Benefits of Hiring a Plumber to Install Your Dishwasher

Hiring a professional plumber to install your dishwasher offers various benefits and guarantees the job is done correctly and safely. Here are some of the advantages of hiring a plumber for your dishwasher installation.


One of the greatest advantages of hiring a plumber for your dishwasher installation is their expertise. Professional plumbers possess the experience and knowledge to successfully and safely install dishwashers. They understand local plumbing codes and regulations and can ensure your installation complies. They can also spot potential issues that could develop during the installation process and address them.

Time Efficiency

Another benefit of hiring a qualified plumber for your dishwasher installation is time efficiency. While it may seem simple, dishwasher installation can prove time-consuming and frustrating for those unfamiliar with plumbing. A professional plumber can conduct your dishwasher installation quickly and efficiently, saving you time and stress.

Warranty and Insurance

The peace of mind that comes with warranty and insurance is another benefit of hiring a plumber for dishwasher installation. Many dishwashers have warranties that demand a professional installation to remain valid. Hiring a plumber means your warranty won’t be voided due to improper installation.

Choosing the Right Plumber to Install Your Dishwasher

When planning to install a dishwasher, selecting the right plumber is crucial to ensure a successful job. Here are a few considerations when choosing a plumber for your dishwasher installation.


The plumber’s experience is one of the most crucial factors to consider when making your selection. At Full Flow Plumbing and Drainage, we have over 10 years of plumbing experience. We ensure that your dishwasher installation is compliant, efficient, and affordable.

Licenses and Certifications

Always choose a QBCC-licensed plumber for your dishwasher installation. Full Flow Plumbing and Drainage are also members of the Master Plumbers Association Queensland. You can rely on our expertise and professionalism.

Reviews and Ratings

Check out our 5-star reviews, and our commitment to turning up on time, getting the job done quickly and quality of work.

Frequently Asked Questions

Can I install a dishwasher myself or do I need a plumber?

Installing a dishwasher requires plumbing and electrical work, so it is highly recommended to hire a licensed plumber and electrician to ensure proper installation. If you are replacing an existing dishwasher, without any changes to the existing plumbing, you can install this yourself.

What are the plumbing requirements for installing a dishwasher?

The plumbing requirements for installing a dishwasher include a hot water supply line, a drain line, and an electrical outlet. The hot water supply line should be connected to the dishwasher’s water inlet valve, while the drain line should be connected to the dishwasher’s drain pump. The electrical outlet should be located near the dishwasher and meet the required voltage and amperage specifications.

Is it easy to replace an old dishwasher with a new one?

Replacing an old dishwasher with a new one can be relatively easy if the plumbing and electrical connections are compatible with the new dishwasher. However, if the new dishwasher requires different connections or modifications, it may require professional installation.

What are the common mistakes to avoid when installing a dishwasher?

Some common mistakes to avoid when installing a dishwasher include improper electrical connections, incorrect placement of the dishwasher, and improper installation of the drain line. It’s important to follow the manufacturer’s instructions and consult with a licensed plumber and electrician to ensure proper installation.


Ready to Book Your Dishwasher Installation?


While some individuals may feel confident in their ability to install a dishwasher themselves, it is important to consider the potential risks and complications that can arise. Hiring a professional plumber provides peace of mind and ensures that the job is done right the first time.

The benefits of hiring a professional plumber for dishwasher installation far outweigh any cost savings that may be achieved by attempting to install a dishwasher yourself. It is always better to err on the side of caution and hire a licensed professional to ensure a safe and efficient installation.