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Sun-Mar Excel Composting Toilet
$2,199.00
❗Receive a $50 rebate from Sun-Mar when you purchase a Sun-Mar Composting Toilet from Wild Oak Trail
🇺🇸 Best Selling Composting Toilet in North America!
💲 Free Shipping & No Tax!
🚛 Ships in 1-5 Business Days
- Description
- Sun-Mar Excel FAQ
- Best Price Guarantee!
- Why Buy From Us
Description
Excel Composting Toilet by Sun-Mar
The Sun-Mar Excel Composting Toilet is your all-in-one eco-friendly toilet solution for off-grid and sustainable living. The Sun-Mar Excel Composting Toilet is designed for simplicity and efficiency, this innovative composting toilet requires no water or plumbing, making it the ideal toilet solution for cabins, tiny homes, RVs, and remote locations.
The Sun-Mar Excel is the first self-contained composting toilet to be certified by the National Sanitation Foundation(NSF) which shows that you are not only purchasing a toilet but are purchasing a Waterless Self composting toilet that sets the standard in the world of composting toilet solutions. The Sun-Mar Composting Toilet is an excellent solution for anyone wanting to reduce their water usage and environmental impact.
Sun-Mar Excel Inclusions
- Excel Toilet
- Owner's Manual
- Warranty Card
- Bowl Liner
- Footrest
- Rake
- 2" ABS Vent Pipe 30"L (Qty:4)
- 4" Diffuser
- Hardware Kit
- 2" Pipe Insulation
- Compost Sure Green (1 Bag)
Sun-Mar Excel Composting Toilet Features
Three Chamber Technology.
Sun-Mar Excel Composting toilets feature a three-chamber technology. First, the Bio-Drum. This is where wastes are initially stored and effectively mixed for optimal aeration and moisture distribution. Second, the Evaporation Chamber. This is where Liquids are evaporated for an even better and effective composting process. Lastly, the Finishing Drawer, where the compost drops and stays Isolated and continues composting while drying out the waste.
Odor-Free Toilet Experience
Thanks to the Sun-Mar's three-chamber technology, you not only get a simple and easy toilet session but you also get an odor-free experience. During the overall process, you get an odor-free and safe clean compost.
User-Friendly
An overall effective and easy user experience is one of the key features of the Sun-Mar Excel Composting toilets. By pairing composting and waterless, you get a very straightforward toilet solution. Going waterless means you don't have to have a plumber to set up your Excel composting toilet, which is why anyone can set up this amazing waterless composting toilet. From Installation to daily use you get an effective and hassle-free experience!
Experience the convenience and sustainability of composting with the Sun-Mar Excel Composting Toilet where comfort meets conservation.
Sun-Mar Excel Composting Toilet Specs
Weight and Dimensions
- Height: 33 1/4″
- Width: 22 1/2″
- Depth: 33″
- Weight: 60 lbs
- Shipping weight 85 lbs
- Shipping dimensions 28″ by 36″ by 36″
Capacity
- Residential/Continuous - 3 adults or families of 5
- Seasonal/Vacation - 6 adults or families of 8
Electrical Specifications
Electricity must be connected while the unit is in use for proper operation.
- Maximum Amps (With Heater On) 2.4
- Fan Watts 35
- Heater Watts (When Thermostat switches it on) 250
- Average Power Use in Watts (Heater on 1/2 time) 150
Vent Pipes and Drains
- Vent Pipe 2″ Thin-wall PVC
- Drains 1″ OD - Optional for seasonal/vacation use. Required for residential/heavy use
Sun-Mar Excel Composting Toilet User and Installation Manual
Sun-Mar Excel FAQ
✅ Sun-Mar Excel Composting Toilet – Frequently Asked Questions
The Sun-Mar Excel is a self-contained composting toilet that uses no water. It separates liquid and solid waste and uses a patented Bio-Drum™ system to accelerate aerobic decomposition, turning waste into compost. It also features a fan and vent stack for odor-free operation and a heating element to aid evaporation and composting. Yes! The standard Excel model runs on 120V AC power, but Sun-Mar also offers the Excel NE (Non-Electric) model for 100% off-grid applications. There's also an Excel AC/DC model that can switch between grid and battery/solar power if needed. The Excel is rated for: The solids (compost) only need to be removed every few months, depending on usage. Liquid is evaporated or drained off via the optional drain. When used properly, you won’t need to empty it often, and it won’t smell. Nope! The Excel has a built-in vent fan that continuously draws air out through a vent stack, preventing odors from escaping into your home or cabin. When installed and maintained correctly, it’s completely odor-free. Composting toilets like the Excel are certified by NSF/ANSI Standard 41, which is accepted in many regions. However, we always recommend checking with your local building code or health authority before purchasing. Each Sun-Mar Excel toilet comes with: Yes, many customers install the Excel themselves! You’ll need basic tools and comfort with: The Excel stands out because: How does the Sun-Mar Excel work?
Is the Sun-Mar Excel completely off-grid?
How many people can use the Sun-Mar Excel?
• 3–4 people full-time, or
• 6–8 people part-time, such as weekends or vacation stays.
It’s one of the most popular models for cabins, tiny homes, and off-grid living. Do I need to empty the toilet often?
Does it smell?
Is it legal in my area?
What comes in the box?
• The complete toilet unit
• Vent stack components (usually 10–12 feet)
• Starter compost material
• Installation and maintenance manual
You may need to purchase additional vent pipe or a drain line depending on your installation. Can I install it myself?
• Securing a vent stack (vertical through the roof or wall)
• Possibly drilling a small drain hole if not evaporating liquids
• Connecting to power (for standard Excel)
We also recommend reading the manual or watching installation videos beforehand. How is it different from other composting toilets?
• It’s self-contained (no separate compost chamber)
• It has the patented Bio-Drum™ for faster, more complete composting
• It’s NSF-certified and used widely in North America
• It's low-maintenance and proven for off-grid use
Best Price Guarantee!
Best Price Guarantee
You'll get the best price available at Wild Oak Trail! We'll match anyone who has it lower!
We love to chat! Give us a call and we'll see what we can do to get you the best deal!
Conditions of our 100% Price Match Guarantee:
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Contact us to discuss the Price Match so we can look up the competitors price
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Buy one, get one free offers and Rebates are not eligible
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The item must be in stock on the competitors website
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The competitor must be an online store, not a retail location
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The website can't be a discounter or auction website ( such as eBay, overstock, etc.)
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The company must be an Authorized Retailer of the product in question
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The Price Match Guarantee is based on the final price of the product including shipping and taxes
Why Buy From Us
Why Buy From Wild Oak Trail?
We’re a family-run business. My Wife Hailey and I run this business with our small staff of 3 awesome people. When you shop with Wild Oak Trail, you're supporting real people, not a big corporation.
We truly care. We’re here before, during, and after your purchase. Good products and great service—that’s how we earn your trust. We see and celebrate EVERY sale that comes in!
We choose quality. If we wouldn’t use it ourselves, we won’t offer it. Our goal is to make you happy enough to tell your friends.
Thanks for supporting our family and being part of the Wild Oak Trail community!