Do All RV Toilets Fit the Same? A Comprehensive Guide

So, you just bought a brand spanking new RV and you’re excited to hit the road and start living your best life. You’ve got the fridge stocked with cold ones, the pantry filled with your favorite snacks, and your playlists prepped and curated to perfection. But there’s just one thing that’s nagging at the back of your mind – do all RV toilets fit the same?

It’s a valid question and one that’s often overlooked by new RV owners. After all, who wants to think about the intricate details of their waste management system when there’s so much adventure and fun to be had? But trust me, having a functional and efficient toilet is going to make all the difference to your road-tripping experience.

So, whether you’re the proud owner of a Class A, B, or C RV, it’s time to take a closer look at the plumbing and figure out if your toilet is up to par. The good news is that there are plenty of options out there to suit your unique needs and preferences. From composting toilets to macerating toilets, let’s break down the ins and outs of these essential appliances that are often taken for granted.

Types of RV Toilets

When it comes to RV toilets, there are a few different options to choose from. Each type of toilet has its own set of features and benefits, depending on your preferences and needs. Here are the most common types of RV toilets:

  • Fixed Toilet
  • Cassette Toilet
  • Portable Toilet

Fixed toilets are the most common type of RV toilet and are typically found in larger, more luxurious RVs. These toilets are permanently installed in the RV and are connected to the onboard black water tank. Fixed toilets are known for their comfort and convenience, but they do require a bit more maintenance than other types of RV toilets.

Cassette toilets are a popular choice for smaller RVs and campervans. These toilets are portable and can be easily removed from the RV for emptying. Cassette toilets have a removable waste tank that can be emptied in any RV dump station or toilet. They are easy to use and require minimal maintenance.

Portable toilets are the most basic and affordable type of RV toilet. These toilets are perfect for those who are on a tight budget or who only use their RV occasionally. Portable toilets are not connected to the onboard black water tank, so they require more frequent emptying and cleaning than other types of RV toilets.

How to Measure for an RV Toilet

When it comes to purchasing a new RV toilet, it’s important to make sure it fits properly in your RV’s bathroom. Here’s how to measure for an RV toilet:

  • Step 1: Measure the distance between the back wall and the center of the flange (the bolt caps where the toilet connects to the floor). This measurement should be between 10 and 12 inches for a standard RV toilet.
  • Step 2: Measure the distance between the side walls of your RV’s bathroom to make sure there’s enough space for the toilet. Keep in mind that the size of the toilet bowl will also affect the overall dimensions.
  • Step 3: Check the height of your existing toilet’s seat and compare it to the height of the new toilet you’re considering. You want to make sure the new toilet is at a comfortable height for you and your family.

It’s important to note that not all RV toilets are the same size. While standard RV toilets typically have a 10 to 12-inch rough-in, some newer RVs may have a 14-inch rough-in or may require a different size altogether. Be sure to check your RV’s owner’s manual or consult with a professional to ensure you’re purchasing the correct size.

Here’s a handy table to help you determine the proper toilet size for your RV:

Rough-In Distance RV Type
10-12 inches Most standard RVs
14 inches Newer RV models
Other sizes Custom or specialty RVs

By following these steps and taking into account your RV’s specific needs, you’ll be well on your way to finding the perfect RV toilet for your home on wheels.

Benefits of upgrading RV toilet

If you own an RV, you know that it comes equipped with a standard toilet. While it gets the job done, there are some clear benefits to upgrading your RV’s toilet.

One of the main reasons you might consider upgrading your RV toilet is for increased comfort and convenience. While many RV toilets are functional, they may not be as comfortable as toilets you are used to using in your home. Upgrading your toilet can provide a more comfortable experience, especially if you plan on using your RV for extended periods of time.

Another benefit of upgrading your RV toilet is water conservation. Many newer toilets are designed to use less water per flush, which can be important if you plan on boondocking or using your RV in areas with limited water supplies. Not only does using less water allow you to stay longer in one location without having to refill your water tanks, but it can also save you money in the long run.

Finally, upgrading your RV toilet can increase the value of your RV. A new and improved toilet can be a selling point for potential buyers if you decide to sell your RV in the future. It can also make your RV more comfortable and enjoyable for you and your loved ones, which is always a plus.

Factors to Consider When Upgrading Your RV Toilet

  • Budget: Your budget will be an important factor to consider when upgrading your RV toilet. Consider how much you are willing to spend and what features are most important to you.
  • Size and Shape: RV toilets come in a variety of sizes and shapes. Make sure to measure your current toilet and find a replacement that will fit in the same space.
  • Flush System: There are several different flush systems available, such as gravity flush, macerating flush, and vacuum flush. Research which system would be best for your needs.

Types of RV Toilets

There are several different types of RV toilets available on the market. The type you choose will depend on your personal preferences and budget.

Some popular options include:

Type of Toilet Description
Gravity Flush This type of toilet works by using gravity to flush waste into the RV’s holding tank.
Macerating Flush A macerating toilet uses a special grinder to break down waste before flushing it into the holding tank.
Vacuum Flush These toilets use a vacuum system to suck waste into the holding tank.
Composting Toilet A composting toilet separates liquids from solids and uses natural processes to break down waste, making it an eco-friendly option.

Consider your needs and the features of each type of toilet before making a final decision.

Popular Brands of RV Toilets

If you are in the market for an RV toilet, you may be wondering which brands are the most popular and why. Here are some of the top brands of RV toilets:

  • Thetford: Thetford is one of the leading brands of RV toilets and has been in the business for over 50 years. They offer a wide range of toilets to fit any size or style of RV.
  • Dometic: Dometic is another well-known brand of RV toilets. Their toilets are known for their durability and easy maintenance.
  • SeaLand: SeaLand is a brand of RV toilets that is known for its innovative designs and high-quality materials. They offer a variety of toilets to fit any RV bathroom size and layout.

Each of these brands has its own unique features and benefits, so it’s important to do your research and choose the one that best fits your needs and budget.

Key Features to Look For

When shopping for an RV toilet, there are some key features to look for to ensure you get the best possible product. Here are a few things to keep in mind:

  • Size and shape: Make sure the toilet you choose fits the dimensions of your RV bathroom and is comfortable for you to use.
  • Flush system: Look for a flush system that uses minimal water and is easy to operate.
  • Durability: Choose a toilet made of sturdy materials that can withstand the bumps and vibrations of road travel.
  • Easy maintenance: Look for a toilet that is easy to clean and repair when necessary.

By keeping these features in mind, you can narrow down your search and find the perfect RV toilet for your needs.

Comparison Table

If you want to compare different RV toilet models and brands side-by-side, a comparison table can be a very useful tool. Here is an example of what a comparison table might look like:

Brand/Model Size Flush System Durability Price
Thetford Aqua-Magic V 18-1/2″ x 16-1/2″ x 18″ Single-pedal flush system Sturdy plastic construction $150
Dometic 310 Series 19-3/4″ x 15″ x 20-1/2″ Gravity-flush system Ceramic bowl and easy-to-clean design $225
SeaLand 711-M28 30-3/4″ x 23-3/4″ x 26-1/8″ Vacuum-flush system High-quality china bowl and durable construction $900

By using a comparison table like this, you can quickly and easily see how different RV toilet models stack up against one another and make an informed decision about which one to purchase.

How to Install an RV Toilet

If you are looking to replace or install a new RV toilet, there are a few things to consider to ensure the installation process goes smoothly. Here are five key steps to help you install an RV toilet:

  • Remove the old toilet – Before installing a new toilet, you need to remove the old one first. Turn off the water supply and disconnect the water line from the toilet. Then, detach the mounting bolts and lift the toilet off the flange.
  • Clean the flange and area – Once the old toilet is removed, clean the flange and surrounding area thoroughly. This will ensure a proper seal once the new toilet is installed.
  • Install the new floor flange – If you are replacing your toilet, you may need to install a new floor flange. This can be done with a closet flange kit and will help to secure the toilet to the floor.
  • Position and secure the new toilet – Place the new toilet on the flange and align the mounting bolts with the holes in the base of the toilet. Tighten the bolts, being careful not to overtighten and crack the porcelain. Reconnect the water line and turn the water supply back on.
  • Test for leaks – After the new toilet is installed, check for leaks by running water into the toilet and flushing it several times. Look for any signs of water leaking around the base of the toilet or from the water connection.

Types of RV Toilets

It is important to note that not all RV toilets are created equal. There are two main types of RV toilets – gravity flush and macerating. Gravity flush toilets rely on gravity to move waste out of the bowl and into the holding tank, while macerating toilets use a blade and pump to break down waste before sending it to the holding tank.

Choosing the Right RV Toilet

When selecting a new RV toilet, there are a few key factors to consider:

Factor Considerations
Comfort Look for a toilet with a comfortable height and seat size. Many RV toilets also offer ergonomic designs for added comfort.
Water usage Consider low-flow or water-saving options to help conserve water while on the road.
Power source If you choose a macerating toilet, be sure to consider the power source (battery or electric) and any potential limitations or requirements.

By following these steps and considering your options, you can successfully install a new RV toilet and enjoy a comfortable and efficient travel experience.

How to maintain an RV toilet

Keeping an RV toilet clean and well-maintained is crucial for a comfortable and stress-free trip. Proper maintenance helps prevent clogs, unpleasant odors, and the need for major repairs. Here are some tips to maintain your RV toilet:

Regular cleaning

  • Use RV-specific toilet paper that is designed to break down quickly and won’t clog pipes. Avoid using regular toilet paper or facial tissue, as they may cause blockages.
  • Clean the bowl and seat regularly with a mild cleanser, and scrub the underside of the rim to remove any buildup of mineral deposits or bacteria.
  • Use an all-in-one RV holding tank treatment that will help break down waste and prevent odors. This should be used regularly, preferably after each use of the toilet.

Preventative measures

Preventative measures are a great way to keep your RV toilet functioning properly and avoiding costly repairs. These include:

  • Regularly inspect all the connections and seals in your RV’s toilet system to ensure they are tight and free of cracks or leaks.
  • Never flush anything other than RV toilet paper down the toilet. This includes wipes, feminine products, and other items, which can cause a clog.
  • Use a toilet seat cover to protect the bowl from scratches and stains.

Deep cleaning

Sometimes your RV toilet may need a deep cleaning to prevent odors and buildup. A deep cleaning can easily be done using household items:

  • Mix equal parts of white vinegar and water into a spray bottle.
  • Spray the mixture generously in the bowl, seat, and rim.
  • Let the solution sit for at least 30 minutes before scrubbing the bowl with a toilet brush.
  • After scrubbing the bowl, flush the toilet several times to remove any residue.

Holding tank maintenance

The holding tank is an integral part of the RV toilet system and requires proper maintenance. Here are some tips to keep your holding tank in good condition:

Holding Tank Maintenance
Empty the tank when it is two-thirds full to avoid overfilling and leaking.
Use a specific type of RV toilet paper that is biodegradable and won’t clog pipes.
Do not leave water in the holding tank for long periods of time, as this can cause the buildup of bacteria and odors.
Use a holding tank treatment regularly to help break down waste and prevent odors.

In conclusion, maintaining an RV toilet requires regular cleaning, preventative measures, and deep cleaning occasionally. Do not neglect the maintenance of your holding tank, and follow these tips to keep your RV toilet functioning properly throughout your trip.

Common issues with RV toilets

RV toilets are a vital component of your RV’s plumbing system. Just like any other fixture in your RV, toilets can also pose issues if not installed or maintained properly. Here are some common issues that RV owners may encounter with their toilets:

  • Clogging: RV toilets are susceptible to clogging due to the limited water supply and the smaller diameter of waste pipes. Using too much toilet paper or flushing foreign objects down the toilet can cause clogging and lead to serious plumbing problems.
  • Leaks: Leaking toilets can create a mess and also cause damage to your RV’s flooring. Common causes of leaks include a damaged seal, worn-out parts, or an incorrectly installed toilet.
  • Odors: Holding tanks that are not cleaned regularly or are not properly vented can emit foul odors. These odors can also seep through the toilet bowl, and give your RV an unpleasant smell.
  • Incorrect installation: Not installing the toilet correctly can cause a host of problems. An improperly installed toilet can leak or become unstable while in use. Make sure to follow the manufacturer’s instructions or hire a professional to install your RV toilet.
  • Poor flushing: Low water pressure, clogs, or a broken flush valve can lead to poor flushing. This can cause waste to remain in the bowl, leading to odors and clogs.
  • Cracks: RV toilets made of plastic material can develop cracks due to excessive usage or accidental damage. Cracks can lead to leaks and will require you to replace the entire toilet.
  • Noise: If your RV toilet makes a lot of noise during flushing or when not in use, it could be a sign of a malfunctioning water pump, clogged pipes, or a worn-out fill valve.

Tips to avoid common RV toilet issues

To avoid common issues with your RV toilet, it’s important to establish a regular cleaning and maintenance routine. Here are some tips:

  • Use only RV-specific toilet paper that’s designed to dissolve in water quickly and completely. Don’t flush any other foreign objects down the toilet.
  • Regularly clean your holding tank and toilet bowl using an RV-specific cleaner.
  • Check for leaks around the base and connections periodically. Replace any worn-out gaskets or seals.
  • Make sure to properly vent your holding tank to avoid odors building up inside your RV.
  • If you’re not confident about installing or repairing your RV toilet, hire a professional to do it for you.


Knowing the common issues with RV toilets can help you prevent them and avoid costly repairs. Make sure to maintain your RV toilet properly, and it’ll provide you with many years of trouble-free use. Remember to use only RV-specific toilet paper, keep your holding tank clean, check for leaks regularly, and vent your tank properly to avoid odors. Follow these tips, and you’ll have a happy and healthy toilet that will serve you well for years to come.

FAQs: Do all RV Toilets Fit the Same?

1. Can I replace my RV toilet with any other toilet?

No, you cannot replace your RV toilet with any other toilet. RV toilets are designed to fit specific RV models, as they have a smaller size than regular toilets.

2. How can I find the right RV toilet for my RV model?

You can check your RV manual or speak to a professional about the specific toilet requirements for your RV model.

3. Are all RV toilets portable?

No, not all RV toilets are portable. Some RV toilets are fixed, while others are portable and can be moved outside for disposal.

4. Can I install a regular home toilet in my RV?

No, regular home toilets are not suitable for RVs. They are too big and heavy, and they require a larger tank and more water pressure than an RV’s plumbing system can accommodate.

5. Can a professional install an RV toilet for me?

Yes, a professional can help you install an RV toilet. It’s important to note that a professional installation can ensure that the toilet is installed correctly and safely.

6. Can I buy an RV toilet online?

Yes, you can buy an RV toilet online. However, it’s important to ensure that the toilet is the right size and model for your RV before purchasing.

7. How often should I replace my RV toilet?

The frequency of RV toilet replacement depends on how often you use it and how well you maintain it. It’s important to regularly check the toilet for signs of wear and tear and replace it if necessary.

Closing Note: Thanks for Reading!

We hope this article on “do all RV toilets fit the same?” has been helpful in answering your questions. Remember, it’s crucial to ensure that you choose the right RV toilet for your specific RV model to avoid installation and performance issues. If you have any other questions or concerns, be sure to consult a professional. Thanks for reading, and we hope to see you again soon!