Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE
Sun-Mar Composting Non-Electric Toilet Excel NE

Sun-Mar Composting Non-Electric Toilet Excel NE

Sale price
Regular price
$2,294.50 You save 21%
Unit price


Estimated Arrival: Between Jun 20 and Jun 30.
*ETA to USA Only

fast free shipping Fast Free Shipping. Free Shipping to lower 48 States. See our a Shipping and Returns Policy.

Shipping Logos

Price Match Guaranteed Lowest Price. We price match our competitors, so you're sure to get the lowest price here.

Customer Service Have a Question? Give us a call at 509-730-5520 or send us an e-mail at

Security Trust Badges

    1. This product is experiencing manufacturing delays. There is a backlog of orders being fulfilled. Please place your order to get in queue for this product and secure your pricing. Estimated manufacture time is currently 6-10 weeks from your purchase date.
    2. The Excel is Sun-Mar’s best selling unit in North America, and for good reason. It is a high capacity Bio-drum toilet that is simple to operate, features proven technology and is extremely reliable. The Excel NE brings the proven technology of the Excel with the convenience of non-electricity. The success of the Excel design meant that a three-chamber unit could be specifically designed for those with no access to continuous 110/220 volt supply. First launched in 1981, the Excel NE has long been the standard toilet for those living off the grid.
    3. One toilet has a rated capacity for 2 adults or a family of 3 for Residential/Continuous use. Or if used seasonally/Vacations, 1 toilet has a rated capacity of 5 adults or a family of 7.
    1. Need to ship to Hawaii? Please contact us for a quote.
    Sun-Mar Authorized Retailer
    1. There are no electrical components built into the Excel NE. There is an optional 12 volt 1.4 watt fan available for purchase. Please note that the 12 volt, 1.4 watt fan is not always required for the Excel NE. Please contact us for any questions.
    2. Like conventional toilets, all Sun-Mar products must be properly vented per the guidelines present in the unit’s owner’s manual.
    3. Vent Pipe 4" thin walled PVC Pipe.
      Drain 1" O.D.  Required for all installations.
    4. Dimensions: 31 1/2" Tall x 22 1/2" Wide x 31 1/2" Deep (shipping dimensions 28" by 36" by 36")
    5. Weight: 47 lbs (shipping weight is 81 lbs)
    1. Q:What is the warranty for Sun-Mar toilets?
      A:Sun-Mar’s warranty is 5 years for the tank, and 3 years for all other components of the toilet. Accessory parts are not included in this warranty, and they have a 90 day warranty period. For all warranty inquiries, the serial number will be required. Please click here for an electronic copy of Sun-Mar’s warranty, which can also be found on the back cover of your owner’s manual. Please note that, as this is a personal hygiene product, once the toilet has been used, there is a no return policy.

      Q:Is this NSF certified?
      A:Yes! Sun-Mar units are certified for cottage and residential use to NSF/ANSI Standard 41. The National Sanitation Foundation, NSF, is the only North American standard for composting toilets. Please click here to visit their website for more information

      Q:Is a permit required to install this toilet?
      A:All Sun-Mar composting toilets, are Certified by NSF (National Sanitation Foundation) to Standard 41. This is an Internationally recognized certification and Sun-Mar composting toilets are the only approved systems with this certification for both residential and seasonal/vacation applications. In North America, the NSF Certification to Standard 41 typically eliminates the need for permits, however in some regions (state and counties) a permit application is still required. We recommend contacting your local health department and/or building code regulator to request that information. Most states have a list of approved composting toilets which would include NSF Certified to Standard 41 at the forefront. Sun-Mar composting toilets are accepted and installed all over North America, so you should not have any issue moving forward.

      Q:Can toilet paper be used with Sun-Mar composting toilets?
      A:Absolutely, any type of toilet paper can be used in Sun-Mar units. It is a useful source of carbon for the compost.

      Q:How do I clean the toilet?
      A:For the outside shell or bowl liner of a self-contained toilet*, an ultra low-flush toilet, or an A/F Waterless toilet, Compost Quick and water, or a solution of vinegar and water, are the recommended cleaners. You do not need to clean the Bio-drum™ unless bleach or some other chemical has been added to the drum by accident. *For advice on cleaning the outside shells of electric self-contained or Central units, please call Sun-Mar’s customer service department at 1 888 341 0782. Power washing is not recommended as this will damage electrical components.

      Q:Will I have odor with my Sun-Mar toilet?
      A:No, if installed and maintained as per instruction. Any odor is a sign that something is not quite right with either the compost, or the installation. Contact our customer service team with your serial number and we’d be glad to go over what is happening and help to resolve it.

      Q:What chemicals need to be used with the toilet?
      A:None whatsoever. Chemicals such as bleach, essential oils, and common cleaners will disrupt, if not outright kill, the compost and are not recommended for use with Sun-Mar toilets. The only materials that should be used with any Sun-Mar toilet are the appropriate Compost Sure Green or Compost Sure Blue bulking materials, Compost Quick and Microbe Mix. Consult your owner’s manual for specific instructions, or contact Sun-Mar’s customer service department for more information.

      Q:Can the toilet be used in the winter?
      A:Yes. Composting may be affected, depending on the location and temperature where it is installed. If the self-contained toilet or Central unit is installed in a location with temperatures consistently below 50° F/15° C, the compost will go dormant and composting will stop, allowing the toilet to function as a holding tank. Removing compost from the drum to make room for some winter usage is recommended.

      Q:Will freezing affect the toilet?
      A:No. The Bio-drum™ is designed to withstand its contents freezing, so using the toilet in the winter is possible. However, do not rotate the drum when the compost is frozen, as this can damage it.

      Q:How often do I need to empty the Bio-drum™?
      A:You never need to empty the Bio-drum™ completely. The compost in the drum contains the microbe colony that aerobically breaks down waste.
      Typically in a seasonal installation, you would remove some compost to the finishing drawer to make room in the drum. The amount to be removed varies by unit and usage. In residential applications, where the toilet is being used every single day, finished compost will be taken out approximately once every three months. In weekend/vacation/seasonal applications, where the toilet is being used primarily on weekends and/or only during certain times of the year (spring, summer etc.), finished compost will be taken out approximately once, or at most, twice a year - so in both cases, not very often. The end product will be finished compost (or dirt, top soil, fertilizer etc.) which you can use on grass, trees, plants and flowers etc. All Sun-Mar self-contained toilets are emptied by reverse rotating the drum (using a handle that is recessed into the seat), a good indication for when it's time to do so is when the Bio-Drum is about and/or just above half full. Counter clockwise rotation will deposit some material into the bottom finishing drawer and then emptied by pulling out the finishing drawer, located at the bottom front of the toilet. Each toilet comes with a very thorough owner's manual and detailed instructions on how to use them. Very easy to maintain and operate a Sun-Mar toilet.

      Q:Can kitchen or garden waste, or greywater, be added to the toilet?
      A:No. We do not recommend adding food or garden scraps or greywater to the toilet as it will affect the composting process.

Customer Reviews

Based on 3 reviews
Ruffus R.
I have been using this for 18 years.

This is my second one I've purchased. I have been using this product for 18 years. This product is an excellent example of living off the grid and leaving a small and sustainable foot print. Sun Mar is the best. Now I will have 2 of them.

Charlie S.
Was worried about the smell

The toilet is easy to set up, use, and clean. I was worried that there would be a smell, but it doesn't! Great product. Thank you Toilet Oasis.

Sheila S.
odor-free Sunmar NE

We purchased our firs Sunmar NE 25 years ago, and it has been working great. We just purchased our 2nd Sunmar NE for our new house. There is no smell and easy to clean.. The mixer drum to extracts clean non-smelly compost every few months. The compost have been working great for our garden.