The Excel is the best-selling composting toilet in North America and for good reason. It is a high capacity Bio-drum toilet that is very simple to operate, features well proven technology and is extremely reliable.
The Excel was the first ever self-contained composting toilet to be certified by the National Sanitation Foundation (NSF). So, when you purchase an Excel, you are literally purchasing a composting toilet that sets the standard. Installations include, but are not limited to: cabins, cottages, homes, businesses, resorts, camps, treehouses and workshops.
To simulate residential use, the Excel was tested by the National Sanitation Foundation (NSF) at maximum capacity for 6 continuous months, during which the Excel produced no odor and produced a clean, safe compost. Only Sun-Mar self-contained units are listed for residential and cottage use by NSF, whose Standard #41 is the toughest composting performance standard in the world.
The 2″ vent is attached at the top back of the Excel and can be installed invisibly by running it through the wall and up the outside wall. For comfort the Excel has a sturdy detachable footrest which can be removed to pull out the finishing drawer.
In normal use the Excel can normally evaporate all liquids, however a 1″ emergency drain is fitted at the rear and this should be connected if the unit is to be used residentially or heavily, or if prolonged power outages are expected. This system can be converted to an AC/DC system using the AC/DC kit, purchased separately.
The Excel is certified to Standard 41 with the National Sanitation Foundation. Click here to view a list of Sun-Mar’s NSF certified products.
To learn more about the Excel, check out our video on Youtube!
Available in white
White: CSEL-01001W
Wondering if the Excel will fit in your space? Here’s what you need to know:
Overall Dimensions: 31.5″ tall x 22.5″ wide x 33.5″ deep
Weight: 50 lbs
Clearance for Drawer Removal: Allow at least 46″ of depth to slide out the finishing drawer with ease
These measurements make the Excel an easy fit for most residential, cottage, or barn settings.
What’s Included with Your Excel Composting Toilet
When you purchase an Excel composting toilet, everything you need for setup and operation is in the box. Here’s what you’ll find:
- The Excel composting toilet unit
- Detailed owner’s manual to guide you through installation and use
- Warranty card for peace of mind
- Removable bowl liner for easy cleaning
- Detachable footrest for added comfort
- Rake for managing compost inside the drum
- Three 31″ sections of 4″ ABS vent pipe, plus a 6″ diffuser to properly vent the system
- Comprehensive hardware kit
- 8-foot flexible drain hose (1″ diameter) for emergency drainage if required
- One starter bag of Compost Sure Green mix to get your system going right away
With these components included, you’ll be ready for a straightforward installation and confident operation, whether your Excel is destined for a home, cottage, or anywhere off the beaten path.
Please note: Due to the weight of this product, we cannot offer a shipping quote through our online shopping cart. Please proceed with the order and Sun-Mar will contact you with a freight quote. Alternatively, you can contact the Sun-Mar sales department toll free at 1888-341-0782, option 1 to purchase this product.
California residents – WARNING: Cancer and reproductive harm – www.P65Warnings.ca.gov.
All Sun-Mar composting toilets have a 3 year warranty on parts. For information on Sun-Mar’s warranty, visit here to view a copy of Sun-Mar’s warranty card.
Check out reviews from our customers!
This is the 2nd one I've owned
The first one lasted 22 years and I was still able to sell it to someone else. I’ve seen negative reviews about this product that I can tell you from experience are all attributed to operator errors. Read the directions and you’ll be fine. All compost toilets take maintenance. I use this in an airbnb and people are very impressed with it. No complaints. (Verified HomeDepot.com review)
compost toilet
toilet works great, unfortunately HD does not stock the compost and it takes two weeks to get it. (Verified Home Depot Canada review)
We have enjoyed the unit from day one
It is cost efficient and is the answer to our dilemma (solid bedrock ground and land slopes to the lake; impossible for septic and lagoon). Your product took us from an outside privy to indoor leisure and comfort and besides, we are saving the environment.
Being on the Minas Basin, with the world’s highest tides (yes! the earth actually tilts at high tide) we have to cope with coastal erosion
Old septic systems can be a problem because of leaching into the seawater. Sun-Mar toilets are a great environmental choice and great too for cold-weather visits to our cottage. My ornamental shrubs enjoy a spring perk-up when we spread our clean compost in May.
Get one, you’ll love it!
We built another shed to house this unit and put it to work. Installation was extremely easy as well as the set up. We were surprised at the lack of smell from the unit (the main point) as well as the easy of maintaining it. Since we only use it on weekends in the summer and a few weekends in winter, it requires very very little in the way of maintenance. Keeping it clean using the supplied solution, rotating the drum at the end of the weekend and periodical cleaning of the composting chamber is all that is required. Now the finished composted waste looks, feels, and smells like rich loam earth. We would recommend this product to anyone who is looking for a low cost, environmental solution to their waste problem. No septic tanks to be pumped out. No worry about environmental impact of an out house. And surprisingly…no flies, which one might think you would get.
