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    SKU: SMC-2000 A/F 240
    Centrex 2000 A/F 240 — electric underfloor Air Flow split system with stronger evaporation performance, suited to heavier seasonal use and light residential use with a straight-fall waterless pedestal.

    Choose the Product options below

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    Please select the primary pedestal (toilet fixture) option you would like to accompany your composting system.

    Note; that the Urine-Diversion (UD) pedestal option is most suitable where there is high use in peek or large family gatherings.

    Note; that with Urine Diversion, it is recommended that the compost mass is kept wet to avoid the pile drying out. Consider getting the hand-held bidet sprayer accessory for facilitating the hydration of compost.

    A hardwearing Nano-Ceramic Non-Stick Coating is applied onto the inner side of the Pedestal (toilet fixture) for maximum cleanliness.

    Note; basic cleaning will still be required.

    Note; non-stick is hydrophobic and repels liquids only.

    Add a wind-driven vent to create redundancy. The wind-driven vent will assist the fan under heavy wind conditions, keeping the system operational in the event of a power outage or fan failure.
    2 colours: white or black.

    Select this reducing collar to adapt the vent from 150mm to 100mm.

    Select this reducing collar adaptor to reduce the pipe further, from 100mm to 50mm. Compatible with this system.

    Note: to reduce to 50mm, the 100mm adaptor above is also required - leave selected.

    Note: systems with 50mm piping will require a mounting stay (not supplied).

    Select this reducing collar to adapt the vent from 150mm to 100mm.

    Select this reducing collar adaptor to reduce the pipe further, from 100mm to 50mm. Compatible with this system.
    Note: to reduce to 50mm, the 100mm adaptor above is also required - leave selected.
    Note: systems with 50mm piping will require a mounting stay (not supplied).

    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: Availability - on backorder and will be dispatched once in stock (Special order – ready in approx. 3–4 months (non-stock item sourced specially from our supplier)).
    $8,537.96 excl GST
    excluding shipping
    Estimated delivery time: Approx. 1–2 weeks (NZ-wide)
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    Availability: Special Order — enquire with WCTNZ® about current procurement timeframes.
    Sun-Mar™ powered waterless underfloor composting system

    Sun-Mar™ | Centrex 2000 — Air Flow 240

    A powered underfloor composting system for medium-to-heavy seasonal use or light residential use with a straight-fall waterless pedestal.

    The 240V Air Flow model adds thermostatically controlled heating and powered ventilation to the Centrex 2000 chamber for stronger evaporation performance.

    Seasonal use
    7–9 Adults
    Stated holiday-use range
    Residential
    Up to 4
    Stated residential capacity
    Heater
    370W
    Thermostatically controlled
    Fan
    30W
    Sun-Mar™ turbofan
    Product background

    Powered Centrex performance with a fully waterless pedestal

    The Centrex 2000 Air Flow 240 combines a separate underfloor BioDrum™ with a dry toilet pedestal positioned directly above the chamber.

    How it works

    Receive, compost and collect

    Stage 1 Receive

    Waste falls directly from the waterless pedestal into the BioDrum™ below the floor through the straight-fall Air Flow pathway.

    Stage 2 Compost & evaporate

    BioDrum™ rotation mixes and aerates the compost while the 370W heater and 30W turbofan support airflow and liquid evaporation.

    Stage 3 Finish & collect

    Counter-rotation operates the Centrex 2000 auto-drop pathway, transferring compost into the collection tray for finishing and removal.

    Core product details

    Powered evaporation and straight-fall installation

    • 370W thermostatically controlled heater.
    • 30W Sun-Mar™ turbofan.
    • 2-inch vent stack.
    • 1-inch drain connection.
    • Waterless straight-fall pedestal pathway.
    • Drain hose provides an overflow liquid-management pathway.
    Fixture pathway: use the compatible Sun-Mar™ waterless pedestal options specified for the Air Flow system.
    Certification

    NSF, electrical and AS/NZS certification evidence

    NSF/ANSI 41 — Non-Liquid Saturated Treatment Systems

    The supplied Sun-Mar™ certification information identifies the applicable NSF performance pathway.

    Electrical features are identified as CSA certified under file number LR55925.

    AS/NZS 1546.2:2008 — Waterless composting toilets

    SAI Global Licence Number: SMKH25591

    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.

    Air Flow or Micro Flush?

    Air Flow is fully waterless and requires a direct straight fall. Micro Flush provides greater flexibility in pedestal position.

    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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