Sun-Mar EXCEL Composting Toilet - Electric

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  • Tiny Houses Inside is a Sun-Mar Authorized Dealer

    - Mfr Direct! Shipping in 14 days or less! -

    Sun-Mar EXCEL Composting Toilet - Electric High-Capacity Composting Toilet

    The Sun-Mar EXCEL Composting Toilet is the best-selling unit in North America and for good reason. It's high-capacity and certification make it a clear choice for the Tiny House or Cabin bathroom. Available in colors White or Bone. Fan powered by AC. DC possible with conversion kit.

    NSF Certification NSF Certifiedand listed by the National Sanitation Foundation
    in accordance with Standard 41composting capability.

    The Sun-Mar Excel electric self-contained composting toilet sets the standard for water conservation and waste recycling. This waterless high-capacity commode saves thousands of gallons of water and incorporates a patented Bio-drum to facilitate quick, odorless decomposition. It has an electronically powered fan to expel odors and a thermostatically controlled heater to help evaporate liquids. Ease of operation, reliability and well-proven technology make this commode one of the stalwarts in the composting toilet category.


    • Ideal for a camp, barn, cabin, cottage, yurt, greenhouse or pool house
    • No sewer or water connection required (recycles waste into soil)
    • NSF Certified (first toilet in its class to merit this distinction)
    • Waterless operation conserves a natural resource, eliminates the need for water hookup and keeps utility bills down
    • Top-rear fan draws in air over evaporating chamber and up vent stack, which can run out through the wall and up the exterior
    • Need DC power? Requires the Sun-Mar AC/DC kit (sold separately)
    • Produces zero pollution and zero odors
    • Under normal use is capable of evaporating all liquids
    • Outfitted with 1/2 in. rear emergency drain
  • Specifications

    Bowl Height without Seat (in.) 
    Product Width (in.) 
    Product Depth (in.) 
    Total depth for installation (in.) 
    Product Height (in.) 
    Bowl Height 
    Comfort Height 
    Mount Location 
    Floor Mount 
    Bowl Shape 
    Part-time use capacity 
    Collection Name 
    Product Weight (lb.) 
    60.0 lb 
    Color Family 
    Commercial / Residential 
    Toilet Features 
    Complete Kit,Composting,Waterless 
    Full-time use capacity 
    Toilet Included Components 
    Certifications and Listings 
    No Certifications or Listings 
    Manufacturer Warranty 
    5 years on the fiberglass tank and 3 years parts replacement on all other parts 
  • Sun-Mar EXCEL Composting Toilet - Electric

  • Why buy from us and not some other store?

    We're Tiny House owners ourselves and know the unique challenges faced every day by Tiny House owners. We pre-screen the best products for your tiny house's needs, like power consumption, space requirements, and most importantly quality you can depend on.

    We are an authorized dealer for all of the brands we represent. Meaning, we have the complete support of the manufacturers and should something be less than perfect, we got your back!

    We offer the Best Price available for you, and if you happen to find a lower price elsewhere,  we guarantee a price match with our Best Price Guarantee!  Our pricing includes no-taxes (except CA - sorry, Uncle Sam wants to be paid too), Free Shipping and complete support from us and the manufacturer.

    We guarantee amazing service, support and dedication from our team and the people that make your Tiny House furnishings.

    Just because your house is tiny, doesn't mean the support you receive should be.

    Please let us know if you have any questions or need help choosing the right products for your Tiny House. 


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    Tiny Houses Inside

  • Order Confirmation:

    As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 14 business days), we will process the charges and submit the order for shipment.

    Order Shipment:

    If your order is stock and we process the charges to your credit card, it will ship within fourteen business days from the date of your order.  We will send tracking information to the e-mail you provide within 24 hours of your order leaving the warehouse.  If you do not receive tracking information from us within fifteen business days of your order, feel free to follow up with us at  help


    Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrived damaged, please send photos to  help and we will process an insurance claim on your behalf.

    Cancellations & Refunds:

    All orders cancelled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped.  If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.

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