Bidets are becoming increasingly popular in American bathrooms, adding to hygiene and peace of mind. They also have an economical benefit in that they reduce needed toilet paper. In the video above, This Old House plumbing expert Richard Trethewey demonstrates bidet retrofit options.
Bidet Retrofits
Bidet retrofits are a more budget-friendly alternative to expensive toilet-bidet combination units. There are two main types of bidet retrofit available: nonelectric and electric models. Nonelectric models are the simplest and most affordable option. They typically use cold water from the toilet’s existing water supply and don’t offer additional features such as heated water or air drying. We looked at several retailers, such as Amazon and the Home Depot, and found that these models are usually priced between $40 and $130.
Electric models require a nearby electrical outlet and are generally more expensive, starting at around $200 and going as high as $850 for high-end models. These models are more advanced and offer a range of luxury features, such as the following:
- Heated water
- Warm air drying
- Adjustable water pressure
- Multiple spray patterns
- Heated seats
- Remote controls
Pro Tip: Richard Trethewey, This Old House plumbing and heating expert, notes that traditional standalone bidets never caught on in the U.S. because “they took up a lot more space” and “you need to have a proper drain and vent and hot and cold water to them.” Retrofit bidet seats solve this problem by fitting onto your existing toilet, eliminating the need for extra plumbing and floor space.
How To Install a Bidet
Installing a bidet retrofit is relatively straightforward and can often be done without professional help. The general process involves removing the existing toilet seat and attaching a mounting bracket to the toilet. You’ll then connect the bidet to the water supply and secure the new bidet seat to the mounting bracket.
Most bidet retrofits come with adjustable adapters to fit various toilet models properly. Before purchasing a bidet retrofit, measure your toilet and check compatibility.
Pro Tip: One thing to plan for that isn’t always obvious: most advanced bidet seats require electricity to power heated seats, warm water, and air-drying features. As noted during a This Old House bidet installation segment, “The only thing you do have to add is electricity. So you gotta find a way to get an electric” outlet near your toilet. If your bathroom doesn’t already have a receptacle beside the toilet, you may need an electrician to add one before installation.
Installation Detail: As demonstrated on This Old House, the process starts by removing the existing toilet seat — typically held on by just a couple of basic screws — and then attaching a universal adapter bracket. The adapter is designed with a keyway in the back that allows the new bidet seat to slide securely into place once the bracket is squared to the back of the toilet.
Features To Consider When Selecting a Bidet
Several features can enhance your comfort, cleanliness, and cost when choosing a bidet retrofit. Below are some of the big features to keep in mind.
Water Temperature Control
While the standard nonelectric model only uses cold water, electric bidets typically come with adjustable water temperature settings. This feature can significantly improve the experience, especially on a cold morning. Warm water is also more effective at promoting hygiene.
Spray Options
Many bidet retrofits have multiple spray patterns and adjustable water pressure. These options can include both rear and front cleaning, oscillating sprays versus pulsating sprays, and adjustable nozzle positions that impact the water stream.
Seat Heating
Electric bidets often include the option of heated seating. It’s purely a comfort feature, so you can skip the cost if it’s not a priority for you.
Air Drying
Some high-end models feature warm air dryers, which reduce or potentially eliminate the need for toilet paper. The air temperature is usually adjustable to your preference. This feature can add quite a bit to the cost, but the return on investment may be worth it both financially and environmentally if you can significantly reduce toilet paper use.
Remote Control
Luxury bidet retrofits often come with remote controls, allowing users to adjust settings and activate features without reaching for the side of the toilet. You may see this as an unnecessary cost, but not having to touch bidet buttons on the toilet keeps your hands cleaner.
Night Light
A built-in night light is a convenient feature, illuminating the toilet bowl for easier use during nighttime visits to the bathroom. This can be especially helpful for seniors or those with kids.
Automatic Functions
Top-of-the-line models may include automatic functions such as the following:
- Lid opening and closing
- Seat raising and lowering
- Self-cleaning nozzles
- Deodorizers
These keep both your bidet and hands cleaner.
Pro Tip: Richard Trethewey, This Old House plumbing and heating expert, has seen these automatic features firsthand. As he described one top-of-the-line model: “This thing washes you, it dries you, it washes itself and it also has a thing for odors to take care of it. And when you’re done…it will actually flush itself and close the lid.”
Choosing the Right Bidet for You
When selecting a bidet retrofit, weigh your budget, desired features, and bathroom setup.
Electrical Requirements
If you’re considering an electric bidet, confirm that you have a ground-fault circuit interrupter (GFCI) outlet within reach of your toilet. If not, you may need to install one or opt for a nonelectric model.
Toilet Compatibility
Most bidet retrofits fit standard toilets, but check your toilet’s shape, be it round or elongated, and measurements before purchasing.
Water Pressure
When selecting a bidet, evaluate your home’s water pressure. Some models may require a minimum water pressure to function correctly.
User Preferences
Think about who will be using the bidet and their needs and comfort level. For example, if elderly family members or young kids will use it, features such as heated seats and gentle spray options may make them more likely to use the bidet as intended instead of resorting to toilet paper.
Maintenance
Realistically think about how much maintenance you’re willing to keep up with. Some models come with self-cleaning nozzles, which can save time and effort.
Water Efficiency
Water efficiency is an environmental concern. Some bidets use less water while still providing an effective cleaning through pressure versus volume. Check for models with adjustable water pressure settings to control water usage according to your needs.
Installation Support
While many bidet retrofits are marketed as DIY-friendly, having access to customer support or detailed installation guides can make the process smoother. We recommend a brand with thorough customer service, including video tutorials, comprehensive manuals, and responsive helplines.
Health Benefits of Using a Bidet
In addition to comfort and convenience, using a bidet can provide various health benefits.
Improved Hygiene
Bidets provide a more thorough cleaning than toilet paper alone. The water spray can reach areas that paper might miss, leading to a cleaner and more hygienic bathroom experience.
Reduced Skin Irritation
Toilet paper can be abrasive, causing skin irritation, especially for those with sensitive skin or hemorrhoids. Bidets offer a gentler alternative that can help reduce irritation and promote healing.
Easier Mobility
Bidets can be especially useful for individuals with mobility issues or disabilities. Features such as remote controls, adjustable nozzles, and automated functions make it easier for those with limited movement to maintain personal hygiene independently.
Accessibility Advantage: On a recent This Old House project, Richard Trethewey installed a combination toilet and bidet with a touch-button control panel and noted: “For anybody with mobility issues, this is really a way to extend your independence for a longer period of time.” He added that the technology is “terrific for anybody actually,” making bidet-equipped toilets a smart upgrade for aging-in-place renovations and universal design bathrooms alike.
Our Conclusion
Bidet retrofits are a helpful way to upgrade your bathroom experience without extensive remodeling. From basic nonelectric attachments to luxury seats with all the bells and whistles, there’s a bidet option for every budget and preference. Whether you’re looking for a simple attachment or a high-end model, the right bidet can reduce toilet paper use, improve hygiene, and add a touch of luxury to your daily routine.
