The Top 5 Composting Toilets Reviewed

composting toilet reviewsMany of those who have heard of composting toilets are usually happy campers who are out in the wilderness and setting up their next adventure. They are a type of toilet that does not use much – if any – water to flush waste. Instead, the waste is mixed with sawdust and left to turn into fertilizer – nifty! The material is composted, and the modern composting toilets such as the ones we’re going to review for you below are those that are designed for you to have the minimum effort with the maximum environmental impact. They’re not just used by campers, but those who live in areas where there is a distinct lack of water supply and zero drainage system to use.

For those of you in a hurry, our choice for the Best Composting Toilet is the Nature’s Head Self Contained Composting Toilet.

Types Of Composting Toilets

There are two basic types of composting toilets on the market today:

  • Self-contained units, where the main composting unit is a part of a toilet
  • Toilets, where the composting unit is set to one side away from the toilet.

You need a power supply to operate a fan, which removes the excess odors and gases associated with toilet use.

Benefits Of A Composting Toilet

There are tons of benefits to owning a composting toilet, especially if you are on the road or on a boat much of the time. Our favorites are:

  • They’re perfect for when you aren’t near a water source
  • Low power consumption means that they are cheap to run
  • Self-contained systems are ideal for transporting waste
  • Kitchen waste can also be disposed of here

With all of that in mind, let’s take a look at five products that you can choose from for your composting toilet.

Preview
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
Nature's Head Dry Composting Toilet with Standard Crank Handle
Villa 9215 AC/DC
Sun-Mar Excel Non-Electric Self-Contained Composting Toilet, Model# Excel-NE
Sun-Mar Compact Self-Contained Composting Toilet, Model# Compact
Manufacturer
Nature's Head
Nature's Head
Separett
Sun-Mar
Sun-Mar
Electric
No
No
Yes
No
Yes
Reviews
Price
$960.00
$960.00
$998.00
$2,210.80
from $2,481.60
Preview
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
Manufacturer
Nature's Head
Electric
No
Reviews
Price
$960.00
More Information
Preview
Nature's Head Dry Composting Toilet with Standard Crank Handle
Manufacturer
Nature's Head
Electric
No
Reviews
Price
$960.00
More Information
Preview
Villa 9215 AC/DC
Manufacturer
Separett
Electric
Yes
Reviews
Price
$998.00
More Information
Preview
Sun-Mar Excel Non-Electric Self-Contained Composting Toilet, Model# Excel-NE
Manufacturer
Sun-Mar
Electric
No
Reviews
Price
$2,210.80
More Information
Preview
Sun-Mar Compact Self-Contained Composting Toilet, Model# Compact
Manufacturer
Sun-Mar
Electric
Yes
Reviews
Price
from $2,481.60
More Information

The Best Composting Toilets

1. Nature’s Head Self Contained Composting Toilet

Nature's Head Self Contained Composting Toilet review

The Nature’s Head Self Contained Composting Toilet

One of the best-rated models on the market for composting toilets is the Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design. Not only does it have an excellent Amazon rating, but it’s also one of the cheaper options on the market. Don’t be concerned: reasonable in price doesn’t equal low quality, not when it comes to this composting toilet!

There is an innovative, space-saving design that makes it the perfect option when you require a toilet in a tight space. It doesn’t need either a water supply or a sewage connection so that you can rely on an easy installation. It’s perfect for a boat or RV, as it was made to fit the smaller spaces and with it being one of the most durable models on the market, you get something that works for everyone.

To empty, just pop open the clips either side of the liquids tank, and you can pull the whole unit up by the handle. The solid waste container that comes with this model can withstand around 90 uses before it needs emptying, and this is due to the peat moss starter that will help with waste decomposition.

Pros:

  • There is a fan and vent hose included with Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
  • Very easy to disassemble
  • Made in the USA
  • Stainless hardware used
  • Full-size elongated seat

Cons:

  • Some reviews show that there could be the difficulty with the side latches
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
165 Reviews
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
  • Proudly made in the USA
  • All stainless hardware
  • Full size elongated seat for comfort
  • Disassembles in seconds for emptying
  • Vent hose and fan included

2. Nature’s Head Dry Composting Toilet

Nature's Head Dry Composting Toilet review

The Nature’s Head Dry Composting Toilet

Another fantastic option from Nature’s Head, the Nature’s Head Dry Composting Toilet with Standard Crank Handle has the most innovative design available. There is no compromise on the value from this brand, as this model is entirely self-contained and urine diverting. There is a waterless operation with this model, and this means that the user can take full advantage of this toilet in multiple places. Lightweight and compact, this Nature’s Head Dry Composting Toilet with Standard Crank Handle will be perfect for you whether for the home, a boat, workshop, remote cabin or RV.

The hardware for this model is all entirely stainless steel, meaning that it looks fantastic as well as being capable of withstanding harsh conditions outdoors. The Nature’s Head Dry Composting Toilet has a hand crank agitator at the very bottom of the product for extra fast composting. It’s easy to install, easy to clean and comes with the necessary accessories for a smooth installation. This includes the 5-inch vent hose and a 12V power plug which gets your toilet up and running where you would like it to be.

The agitator handle differentiates this model from the other Nature’s Head composting toilets, and it has the use of an electric fan should you wish, which is very useful for the ventilation shaft.

Pros:

  • Easy to install
  • Much faster composting
  • The molded design gives it a better look
  • Self-contained
  • All accessories included

Cons:

  • Does not come with a guide on installation of the vent
Nature's Head Dry Composting Toilet with Standard Crank Handle
97 Reviews
Nature's Head Dry Composting Toilet with Standard Crank Handle
  • Hand crank agitator in base for fast composting
  • User friendly
  • Easy installation
  • Features a molded design
  • Includes 5' vent hose, bottle cap, 12v power plug

3. Villa 9215 AC/DC

Villa 9215 AC/DC review

The Villa 9215 AC/DC

Released in 2018, the Villa 9215 was designed to replace all of the older Villa styles of composting toilets. There are more advanced technologies included with this model, as well as some exciting new discoveries when it comes to waste management. Whether you are living on the grid or off of it, this is an ideal choice and perfect for urine diversion and going waterless. You can run the Villa 9215 on both battery and solar power, so it’s instead a diverse model.

The Villa 9215 comes with a single speed fan to support up to 20ft of venting. For both drain and direct vein application, this comes with everything that you need to make it happen, including ten compostable bags and a waste container with a lid. This product comes with a 5-year manufacturer guarantee, and this is comforting for you to know as the buyer. It means that there is a great deal of confidence in the model. On top of the 5-year guarantee, there is a separate guarantee of 3 years on the fan alone, which gives you the maximum protection against manufacturing defects.

The Villa 9215 comes with a different design for the toilet bowl, which means that the urine is redirected to a holding tank and solid waste is in a compostable and lined bag for the proper storage.

Pros:

  • Everything included for smooth installation
  • Intertec ETL Certified
  • Long guarantee
  • Sleek design
  • Compact size

Cons:

  • The higher price may not appeal to all
Villa 9215 AC/DC
9 Reviews
Villa 9215 AC/DC
  • Composting,Waterless,Urine diverting, off-grid, toilet

4. Sun-Mar Excel

Sun-Mar Excel review

The Sun-Mar Excel

For those with epileptic power supply, this product suits perfectly. Those who live off the grid will love the features of this product, though this self-contained composting toilet does not have either a fan or a heater. The odorless operation works with just 4-inches of a vent which was mounted at the unit’s top rear. If you install the vent vertically about 3 feet above the peak of the roof, you’ll have the best air circulation possible. There is also a 12V fan – totally optional for you – and this has to be installed if the toilet is installed with any bends.

This toilet is perfect both in residential areas or locations that are more remote. It can work for up to seven people on vacation or three people in a residential setting. One of the other awesome perks of the Sun-Mar Excel is the sturdy and detachable footrest. The whole design of this product has been made for your total comfort.

Pros:

  • Not an electric model (saves more energy!)
  • Certified by NSF
  • Excellent guarantees
  • Odor free

Cons:

  • Complaints have been logged about debris being clogged into the toilet
Sun-Mar Excel Non-Electric Self-Contained Composting Toilet, Model# Excel-NE
12 Reviews
Sun-Mar Excel Non-Electric Self-Contained Composting Toilet, Model# Excel-NE
  • Non-electric model; ideal for applications off the grid
  • Low profile unit complements any bathroom
  • Uses no water
  • 100% non-polluting
  • Includes variable diameter bio-drum with recessed handle for processing compost

5. Sun-Mar Compact

Sun-Mar Compact review

The Sun-Mar Compact

One of the best features about the Sun-Mar Compact composting toilet is that it has an elegant and low profile design. This enables it to squeeze into spaces of all sizes, and there is a patented Sun-Mar Bio-Drum, which is what makes this composting toilet smaller. It’s got a smaller front and a more comprehensive back panel, and there is one single agitator handle that is used to stir the drum properly. The front operating handle is there to make the smaller design easy, and it’s one of the shortest composting toilets on the market today that remains one of the most popular.

The Sun-Mar compact model has a high capacity tank system, and it means that you can complete the installation of this composting toilet anywhere! Whether you are working commercially in a small portable office or you’re on the sea on a boat, this is the perfect model for any space.

The best bit? The Sun-Mar compact model can convert human waste into manure, which is safe to use and is going to improve the fertility of your soil without the smell. There is no water needed for this toilet, so if you are on the road and away from a steady water supply, you’ll be using the right product.

Pros:

  • Waterless operation
  • NSF Certified
  • Bio-Drum technology to process the compost
  • Vent kit comes with the product

Cons:

  • Risk of decomposition in the winter months

How Does A Composting Toilet Work?

Here is a great YouTube video explaining how composting toilets work: