Sun-Mar MOBILE 12V Composting Toilet - Electric DC | Tiny Houses Inside
Sun-Mar MOBILE 12V Composting Toilet - Electric DC | Tiny Houses Inside Sun-Mar MOBILE 12V Composting Toilet - Electric DC | Tiny Houses Inside Sun-Mar MOBILE 12V Composting Toilet - Electric DC | Tiny Houses Inside

Sun-Mar MOBILE 12V Composting Toilet - Electric DC

$ 1,890.00
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    Sun-Mar Mobile 12V Composting Toilet - Electric, Regular Capacity

    The Sun-Mar MOBILE 12 Volt Composting Toilet is a Medium capacity electric composting toilet for boaters and RV owners. Odor free operation. Rated for 1 adult or families of 2. Self contained. Measures 19.5W x 23D x 30H in.

    NSF CertificationNSF Certified and listed by the National Sanitation Foundation
    in accordance with Standard 41 composting capability.

    The original composting toilet for Mobile and Marine applications, no muss and no fuss, no changing containers, no pouring out urine. Self-contained and with a little maintenance works like a charm! The Sun-Mar Mobile was the first composting toilet specifically designed to recycle waste on boats and recreational vehicles. Less pump-outs! No more chemical toilets! Recycling brings freedom, with the ODOR-FREE operation of a Sun-Mar.

    Although the Sun-Mar Mobile uses Sun-Mar's tried and true three-chamber system, "marinizing" the unit led to some interesting adaptations. The need to be able to handle violent motion meant that the finishing drawer had to be gasketed so that no liquid could escape from the evaporating chamber. The air intakes face the same problem. These have to be located higher up and the air ducted down to the evaporating chamber. At the same time, a special drum locker ensures that the composting drum is held upright under all sea or road conditions. Space constraints mean that a fold-away foot rest is needed on the unit. This footrest has spring loaded legs, and a safety release mechanism to enable it to be removed periodically when access to the finishing drawer is required. To assist installation, strong mounting brackets are mounted at the base and rear of the unit. Electrically, the Sun-Mar Mobile units are quite different from other units because of the unique situation on many boats and RV's.

    A 4.0 Watt 12 Volt fan is installed in a fan box within the vent stack. This fan, (which is on its own circuit) is designed to operate continuously while the unit is in use.

    Carbon and Zeolite Filter

    While venting is optimal above deck level, some installations will require that the deck vent is flush with the deck. Sun-Mar has incorporated the use of activated carbon and zeolite filter materials in the fan box to "scrub" the air of fresh ammonia odors. This has proven successful, and ensure odor-free operation at deck level.

    Overflow Drain Required

    Evaporation capacity on Sun-Mar Mobile units is limited by the size of the heater, the surface area of the evaporation chamber, and the volume of air movement. Consequently, arrangements should be made to connect the Sun-Mar Mobile drains to a container or small holding tank for disposal in an approved manner.

    Seasonal capacity: 3 adults

    Residential use: 1 adult.

    Tiny Houses Inside is a Sun-Mar Authorized Dealer


    • No water or sewer connections required
    • No pollution
    • No odor
    • Certified and listed by ANSI/NSF
  • 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.) 
    45.0 lb 
    Color Family 
    Commercial / Residential 
    Toilet Features 
    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 MOBILE 12V Composting Toilet - Electric DC

  • 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


    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 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.