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    SKU: SM-CPT
    Compact 240 — low-profile self-contained Bio-drum™ composting toilet for light residential or holiday use where you want a smaller powered unit with a more bathroom-friendly form.

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    Extend your soft connection leachate drainpipe to reach your hard connection leachate drainpipe or soak-pit/trench.

    Soft connections allow for flexible placement of the composting tank in relation to a hard connection or drain.

    The system is packed with 1 meter of 25mm leachate drainpipe as a standard.

    Extend your leachate drain via in-ground hard connection to reach your soak-pit/trench (soak-away).

    Most soak-aways should be installed 3 meters away from the foundations of the structure but this remains circumstantial to the site.

    Run your leachate drain into a soak pit (vertical soak-away) or into a trench (horizontal soak-away).

    Availability: 4 in stock
    $4,069.29 excl GST
    excluding shipping
    Estimated delivery time: Approx. 1–2 weeks (NZ-wide)
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    Sun-Mar™ | Media
    Sun-Mar™ powered self-contained composting toilet

    Sun-Mar™ | Compact 240

    A low-profile self-contained composting toilet for one to two people full-time and up to four people in part-time or holiday use.

    Compact 240 brings Sun-Mar™ BioDrum™ composting technology into a smaller on-floor format for baches, cabins, sleep-outs and similar locations where reliable electrical power is available.

    Full-time
    1–2 People
    Stated system capacity
    Part-time
    Up to 4
    Holiday or intermittent use
    Format
    On Floor
    Self-contained system
    Technology
    BioDrum™
    Rotating composting drum
    Product background

    Compact composting without an underfloor chamber

    Compact 240 is designed where the complete composting system needs to remain within the bathroom rather than being installed below the floor.

    Its low-profile body provides a smaller alternative to the Excel while retaining Sun-Mar™'s staged composting, evaporation and finishing pathway.

    How it works

    Compost, evaporate and finish within one unit

    Stage 1 Compost

    Waste and bulking material enter the BioDrum™, where rotation mixes and aerates the composting material.

    Stage 2 Manage moisture

    Ventilation and the powered system support evaporation while the emergency drain provides overflow protection.

    Stage 3 Finish

    Compost progresses into the finishing area before final removal from the toilet.

    Core product details

    Compact powered composting

    • Patented variable-diameter BioDrum™ design.
    • Low-profile body designed for bathroom installations.
    • Self-contained on-floor composting pathway.
    • 2-inch vent connection at the rear of the unit.
    • 1/2-inch emergency drain at the rear for overflow protection.
    • Smaller three-chamber format than the Sun-Mar™ Excel.
    • Designed for locations where reliable power is available.
    Best suited for

    Light residential and cottage-style use

    Compact 240 is well suited to baches, sleep-outs, cabins and similar applications where a self-contained composting toilet is preferred and expected use remains within its stated capacity.

    Capacity note: choose a larger system where expected occupancy or daily use is above the stated Compact 240 capacity.

    Certification

    NSF performance and electrical certification

    NSF/ANSI 41 — Non-Liquid Saturated Treatment Systems

    The supplied Sun-Mar™ certification information identifies testing for liquid containment, odour performance and solid end products.

    Sun-Mar™ electrical features are identified as CSA certified under file number LR55925.

    NSF: What you need to know about composting toilets

    NSF composting toilet information

    WCTNZ® is an authorised New Zealand supplier of Sun-Mar™ composting toilet systems. Local support is available for system selection, installation information, consumables and after-sales requirements.

    Compact or Excel?

    Compact is the smaller on-floor option for lighter use. Choose Excel where greater full-time or holiday capacity is required.

    Before you choose, think:

    1. Your place — tiny home, bach, family home, RV, or public site

    2. Your building — whether it suits a self-contained or split composting toilet system

    3. Your needs — user numbers, maintenance preferences, and how off-grid you want to be

    To narrow it down properly, start with the Composting Toilet Guide .

    Open the WCTNZ® Selector Guide »

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