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Here we compare the Dometic 320 vs 510 to see which RV toilet is better for you and your type of RV. Well, at least which one is best for your needs.
We will compare the size, flush, and installation of these toilets. We will compare the value they are for the money and finish up with the pros and cons of each.
We’ll start by discussing the similarities between the Dometic 320 and Dometic 510 toilet.
Dometic 320 vs 510 – Similarities
Quick Glance




The Warranty
They both come with a limited two-year warranty.
Rim shape
The are both elongated bowls.
Now let’s take a closer look at how these two Dometic toilets differ.
Differences Between Dometic 320 and Dometic 510
Installation
The Dometic 320 has a 2-bolt installation system and the Dometic 510 has a 4-bolt installation system.
Appearance
Dometic 320
It’s smaller than the 510 measuring 22 x 14.8 x 19.8 inches.
It is also, significantly lighter weighing 37 pounds.
It is elongated and has a rim around the edge to prevent spills.
Dometic 510
The design has the flush pedal on the left-hand side (as you are facing it).
It is measures 26.3 x 20.87 x 25.16 inches and weighs 50 pounds.
It has a long lasting high-gloss china finish that resists scratches and stains.
The Winner Is – A tie!
The Flush
The flushes are different between these 2 models.
Dometic 320
You will also have a gravity flush, but there is no 360º vortex flush pattern.
It also has low flush technology, so it only requires 1 pint (.473 liters) of water per flush.
Dometic 510
This is a gravity flush that uses about a pint of water per flush.
The Winner Is – The 320!
The Flush Pedal
Both pedals work slightly different on these two models.
Dometic 320
If you only press the flush half-way down, you will add water to the bowl.
This is only needed when flushing down solids.
If you push the pedal all the way down, you will get a full flush.
We like this feature as it saves water.
Dometic 510
If you only press the flush half-way up, you will add water to the bowl.
This is only needed when flushing down solids.
If you push the pedal all the way down, you will get a full flush.
We like this feature as it also saves water.
The Winner Is – It’s a tie!
Value for Money
The price for RV toilets range anywhere from $100 to over $300.
They vary primarily because of the materials that are used.
Dometic 320
Cheaper but good quality toilet.
Dometic 510
It is about $50 more than the 320, so it is on the expensive side of the RV toilet price spectrum.
Overall, it is a more solid and larger but there is not much more to justify the price.
The Winner Is – The Dometic 320
Pros and Cons
Before we give our final verdict, here we will list some of the pros and cons of these Dometic toilets.
Dometic 320
Pros:
- The elongated shape for added comfort
- This wooden seat is a higher quality than plastic seats
- It hugs the wall and used less floor space in front
Cons:
- An 11-inch clearance is required from the flange so it may not fit in all RVs
The Final Verdict
Today’s winner was going to be the Dometic 320! (You saw that coming. Right?) The superior wooden seat, the low flush technology and the cheaper price put this model over the top.
The size and height of the Dometic 510 is suited for the larger RV or mariner traveler. So if you are traveling with the basketball team, this will be your toilet!
That would be the only reason that we would consider recommending the 510 over the 320 in this case alone.
Happy traveling!
The 320 model installation manual
The 510 model operation manual
The 510 model warranty request contact
Amazon’s Best Selling RV Toilets
- INNOVATIVE DESIGN: The Dometic 310 toilet is a full-size and lightweight model, which is ideal for modern RVs. It has a simplified design, which makes it easy to operate and maintain.
- EFFICIENT FLUSHING SYSTEM: This toilet uses a pressure-enhanced "PowerFlush" rim wash system that clears the bowl quickly and effectively. It can flush with as little as 1 pint of water, making it more water-efficient than many other toilets on the market.
- SLOW-CLOSE SEAT COVER: The Dometic 310 toilet comes with a new Slow Close seat cover that provides a gentle and quiet closing motion, preventing slamming and reducing wear and tear.
- COMFORTABLE FEATURES: This toilet is designed with user comfort in mind. It has an ergonomic seat height and bowl shape that provide a more comfortable sitting experience. The one-direction pedal allows for easy and convenient operation.
- VERSATILE AND UNIVERSAL FIT: The Dometic 310 toilet has a universal fit that allows it to be installed on most RVs. It is available in white color and features a wood, ceramic, and plastic construction, making it durable and long-lasting.
- Stylish, contemporary and home-like
- Vigorous flush with 100% bowl coverage
- Incorporates a new mechanism design that wipes clean with every flush
- Easy to clean
- China bowl, yet lightweight
- COMPLETE WASTE REMOVAL: The Dometic 300 series gravity-flush RV toilet features a powerful triple-jet action flush that ensures complete waste removal with each use, keeping your RV clean and odor-free.
- EFFICIENT OPERATION: The efficient foot pedal operation with adjustable water level makes it easy to use and control water usage. You can customize the water level to match your needs, helping you conserve water during extended trips.
- RESIDENTIAL STYLE: This toilet offers a residential-style design, providing you with the comfort and familiarity of home while on the road. The elongated seat and full-size height make it easy to use and comfortable, even for extended periods.
- DURABLE CONSTRUCTION: The Dometic 300 is constructed using high-quality materials that ensure durability and longevity. It is built to withstand the harsh RV environment and can provide reliable service for years to come.
- EASY TO INSTALL: This toilet is designed to be easy to install, making it an ideal choice for RVers looking to upgrade their existing toilet. The simple installation process can be completed in just a few hours, and all the necessary hardware is included in the package.
- Does not include hand sprayer
- Improved mounting bolt slots specifically designed for easy installation
- Residential sized SloClose seat and cover
- Pressing pedal halfway adds water, full activation flushes
- Provides the deepest toilet bowl available for RVs
- Gravity flush RV toilet - ideal for motorhome, caravan and more
- 20" taller seating height - more comfortable
- Foot pedal flush - half way adds water, full activation provides a full-bowl coverage flush
- Lightweight for flexible installation; Easy to install; Made of HDPE - durable and can be used for more than 5 years
- Overall Dimension (LxWxH): 19" x 15-1/2" x 20" (48.5 x 39.5 x 51cm)
- COMFORTABLE AND FULL-SIZED: The elongated, deep ceramic bowl and full-size enameled wood seat of the Dometic 320 series RV toilet offer unmatched comfort, unlike most smaller RV toilets.
- EFFECTIVE FLUSHING: The pressurized full-rim flush ensures a thorough bowl-clearing rinse every time, so you don't have to worry about any lingering odors or debris.
- DURABLE AND EFFICIENT: Made with 100% vitreous ceramic bowl, the Dometic 320 is built to last and withstand wear and tear. It is also designed to conserve water, using only one pint per flush to reduce water waste.
- EASY TO USE: The ergonomic foot pedal allows for easy operation. Press it partially to add water and fully to flush.
- FUNCTIONAL RIM DESIGN: The Dometic 320 toilet comes with a rim design that effectively prevents spills. This ensures that you can have a hassle-free toilet experience in your RV without worrying about making a mess.
- INNOVATIVE DESIGN: The Dometic 310 toilet is a full-size and lightweight model, which is ideal for modern RVs. It has a simplified design, which makes it easy to operate and maintain.
- EFFICIENT FLUSHING SYSTEM: This toilet uses a pressure-enhanced "PowerFlush" rim wash system that clears the bowl quickly and effectively. It can flush with as little as 1 pint of water, making it more water-efficient than many other toilets on the market.
- SLOW-CLOSE SEAT COVER: The Dometic 310 toilet comes with a new Slow Close seat cover that provides a gentle and quiet closing motion, preventing slamming and reducing wear and tear.
- COMFORTABLE FEATURES: This toilet is designed with user comfort in mind. It has an ergonomic seat height and bowl shape that provide a more comfortable sitting experience. The one-direction pedal allows for easy and convenient operation.
- VERSATILE AND UNIVERSAL FIT: The Dometic 310 toilet has a universal fit that allows it to be installed on most RVs. It is available in white color and features a wood, ceramic, and plastic construction, making it durable and long-lasting.
Last update on 2023-05-29 / Affiliate links / Images from Amazon Product Advertising API