Can I retrofit a Coway water bidet to my existing toilet?

If you have ever wondered whether it is possible to upgrade your existing toilet by retrofitting a Coway water bidet, you are not alone. The prospect of enjoying the exceptional hygiene and comfort offered by a bidet without having to replace your entire toilet system is indeed enticing. In this article, we will explore whether it is feasible to retrofit a Coway water bidet to an existing toilet and discuss the advantages of integrated bidet toilets. So, let’s delve into the realm of bathroom upgrades and discover if retrofitting is an option for you.


In this article, we will explore the world of bidets and their benefits, specifically focusing on Coway bidets. We will discuss the advantages of installing a bidet in your bathroom, as well as whether a Coway bidet can be retrofitted to your existing toilet. Furthermore, we will delve into the compatibility of Coway bidets with different types of toilets, the requirements for retrofitting, and the installation process. Lastly, we will touch upon when it may be necessary to seek professional assistance and the advantages of opting for an integrated bidet toilet.


What is a bidet?

A bidet is a bathroom fixture that provides a convenient and hygienic approach to personal cleanliness. Originating in France in the 17th century, bidets have become increasingly popular worldwide. Traditionally, bidets are separate fixtures found next to the toilet and feature a water jet for cleansing purposes.

Types of bidets

Bidets come in various forms, each with its own features and functionalities. Some common types include standalone bidets, bidet attachments, handheld bidet sprayers, and integrated bidet toilets. Each type caters to different preferences and installation requirements.

Growing popularity of bidet toilets

In recent years, bidet toilets have gained significant popularity due to their convenience and enhanced cleanliness. Combining the features of a toilet and a bidet, these integrated systems offer a seamless and ergonomic solution for personal hygiene.

Benefits of a bidet

Improved hygiene

One of the primary benefits of using a bidet is improved hygiene. The use of water for cleansing helps to effectively remove bacteria and germs, leaving you feeling fresh and clean. Unlike traditional toilet paper, a bidet ensures thorough cleaning without causing any irritation or discomfort.

Reduced toilet paper usage

Another advantage of bidets is the substantial reduction in toilet paper usage. By relying on water for cleaning purposes, bidets significantly minimize the need for excessive paper consumption. This reduction not only saves money but also contributes to environmental sustainability by reducing paper waste.


Bidets are eco-friendly alternatives to traditional toilet paper use. With the increasing concern for environmental conservation, bidets offer an effective solution. By reducing the consumption of toilet paper, bidets help to conserve natural resources and decrease carbon emissions associated with production and waste management.

Soothing and comfortable cleaning experience

Not only do bidets improve hygiene and reduce paper usage, but they also provide a soothing and comfortable cleaning experience. The gentle water stream from a bidet offers a refreshing and hygienic sensation, ensuring utmost cleanliness and comfort.

Can a Coway bidet be retrofitted?

Compatibility with existing toilets

Coway bidets are specifically designed to be compatible with a wide range of toilets. Whether you have a standard toilet or a more unconventional design, there is a high chance that Coway bidets can be retrofitted. However, it is essential to assess your toilet’s compatibility before proceeding with the installation.

Requirements for retrofitting

To successfully retrofit a Coway bidet to your existing toilet, you must ensure a few prerequisites. Firstly, you need to have access to a water supply line near your toilet. This water supply will be used to operate the bidet’s cleansing function. Additionally, an electrical connection is required for the bidet’s control panel and other electronic features.

Installation process

The installation process of retrofitting a Coway bidet to your existing toilet typically involves a few steps. First, you need to remove the existing toilet seat and clean the area thoroughly. Then, the Coway bidet seat is installed, ensuring proper alignment with the toilet bowl. Finally, the water supply and electrical connections are established, and the bidet is tested for functionality.

Professional assistance

While retrofitting a Coway bidet can be a DIY project for some individuals, it may be advisable to seek professional assistance, especially if you are not well-versed in plumbing or electrical work. Enlisting the help of a qualified plumber ensures the installation is done correctly, reducing the risk of any issues or damage.

Compatibility with existing toilets

Types of toilets compatible with Coway bidets

Coway bidets are designed to be compatible with most standard toilets. Whether you have a one-piece or two-piece toilet, round or elongated bowl, there is a good chance that a Coway bidet can be retrofitted. It is important to verify the compatibility of your specific toilet model with the Coway bidet before proceeding with the installation.

Considerations for older or unconventional toilets

While Coway bidets generally offer compatibility with a wide variety of toilets, there might be certain limitations with older or unconventional toilet models. These may include non-standard dimensions, incompatible seat designs, or unique plumbing configurations. It is recommended to consult the manufacturer or a professional plumber to assess the feasibility of retrofitting a Coway bidet to such toilets.

Requirements for retrofitting

Water supply

To retrofit a Coway bidet, access to a water supply line near the toilet is crucial. This water supply will be responsible for providing the necessary water pressure and temperature for the bidet’s cleansing functions. It is important to ensure that the water supply is compatible with the bidet’s specifications and that it meets the necessary plumbing requirements.

Electrical connection

Alongside a water supply, an electrical connection is required for certain features of Coway bidets. These may include the control panel, heating elements for warm water, or other electronic functions. Ensure that your bathroom has an accessible electrical outlet nearby to facilitate the installation of the bidet.

Toilet seat compatibility

One essential consideration for retrofitting a Coway bidet is the compatibility of the bidet with your existing toilet seat. Coway bidets are typically designed to replace the existing seat, so it is important to ensure that the bidet seat aligns properly with the toilet bowl and is securely fastened.

Available space

Lastly, consider the available space in your bathroom for retrofitting a Coway bidet. While bidet attachments or handheld sprayers may require less space, integrated bidet toilets require additional clearance in front and on the sides of the toilet. Ensure that your bathroom can accommodate the necessary dimensions for a Coway bidet without compromising comfort or functionality.

Installation process

Step-by-step guide to retrofitting a Coway bidet

To retrofit a Coway bidet to your existing toilet, follow these steps:

  1. Turn off the water supply to the toilet and flush to drain any remaining water from the tank.
  2. Disconnect the water supply hose from the bottom of the toilet tank.
  3. Remove the existing toilet seat by unscrewing the bolts located at the back of the seat.
  4. Clean the toilet bowl and the area where the bidet seat will be installed.
  5. Position the Coway bidet seat over the toilet bowl, ensuring proper alignment with the mounting holes.
  6. Secure the bidet seat to the toilet bowl by attaching the bolts and tightening them securely.
  7. Attach the water supply hose to the bottom of the bidet seat, ensuring a tight connection.
  8. Connect the other end of the water supply hose to the water supply valve, ensuring proper alignment.
  9. Plug the bidet’s power cord into an electrical outlet, if applicable.
  10. Turn on the water supply valve, allowing water to flow into the bidet seat.
  11. Test the bidet’s functions and adjust the settings as desired.

Tools and materials required

To retrofit a Coway bidet, you may need the following tools and materials:

  • Adjustable wrench
  • Screwdriver
  • Water supply hose
  • Teflon tape (for ensuring watertight connections)

Precautions to take during installation

During the installation process, it is important to take a few precautions. Ensure that the water supply valve is turned off before beginning the installation to avoid any potential water leaks. Additionally, handle all electrical connections with caution and follow proper safety procedures. If you are unsure or uncomfortable with any aspect of the installation, it is best to seek professional assistance.

Professional assistance

When to seek professional help

While retrofitting a Coway bidet can be a relatively straightforward process, there are instances where seeking professional help is advisable. If you are unfamiliar with plumbing or electrical work, it is recommended to consult with a qualified plumber or electrician. Additionally, if you have an older or unconventional toilet that may require modifications, a professional can provide the necessary expertise and ensure the installation is done correctly.

Finding a qualified plumber

To find a qualified plumber for retrofitting a Coway bidet, consider seeking recommendations from friends, family, or trusted contractors. Local plumbing associations or online directories can also provide a list of licensed and experienced plumbers in your area. Be sure to inquire about the plumber’s experience with bidet installations and request references if necessary.

Benefits of professional installation

Opting for professional installation offers several benefits. Firstly, it ensures that the bidet is installed correctly, minimizing the risk of leaks or other issues. Additionally, professional plumbers possess the necessary knowledge and experience to handle any challenges that may arise during the installation process. Lastly, professional installation provides peace of mind, knowing that the retrofitting has been done by a trained and qualified individual.

Advantages of integrated bidet toilets

Seamless and ergonomic design

Integrated bidet toilets offer a seamless and ergonomic design, combining the functionalities of a toilet and a bidet into a single unit. With no separate fixture required, integrated bidet toilets provide a streamlined and aesthetically pleasing solution for any bathroom. The design allows for a comfortable and convenient cleaning experience, ensuring optimal hygiene.

Additional features

Integrated bidet toilets often come with a variety of additional features to enhance user comfort and convenience. These may include heated seats, adjustable water temperature and pressure settings, air drying functionality, built-in deodorizers, and even remote control operation. These added features provide a luxurious and personalized experience, catering to individual preferences.

Convenience and user-friendliness

One of the major advantages of integrated bidet toilets is the convenience and user-friendliness they offer. With integrated controls and settings, users can easily customize their cleaning experience without the need for additional accessories or adjustments. The intuitive design and easy-to-use functionality make integrated bidet toilets accessible to people of all ages and abilities.

In conclusion, bidets, specifically Coway bidets, offer numerous benefits in terms of improved hygiene, reduced toilet paper usage, eco-friendliness, and a soothing cleaning experience. While Coway bidets can be retrofitted to existing toilets, compatibility, requirements, and installation procedures should be carefully considered.

Seeking professional assistance ensures a seamless installation process and peace of mind. Integrated bidet toilets provide a holistic solution, combining functionality, convenience, and additional features for an elevated bathroom experience. Consider the advantages and compatibility of a bidet before deciding on the best option to enhance your bathroom and personal hygiene.