Search
All Products
    Menu Close
    SKU: CM-HP-2
    The Clivus Multrum™ CM HP is a high-capacity composting toilet, designed for reliable performance with a 750mm underfloor clearance requirement.

    Choose the Product options below

    *

    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.

    If your user rating is higher than the capacity of the system choose additional chambers.

    Choose additional chambers to increase the capacity of your system or to provide longer composting times where needed.

    Choose additional heating to speed up or maintain the composting process or for colder climates (100watts @ 12 Volts DC)

    For direct solar-powered options Use one 150 Watt Solar Panel (PV) with a 10amp Solar Controller. Use an on-off switch when heating is not desired.

    Use a 150 Watt transformer (240 Volt AC to 12 Volt DC) supply to power your Heating Element Option

    Use a 150 Watt transformer (240 Volt AC to 12 Volt DC) supply to power your Heating Element Option

    If the underfloor height exceeds 1200mm (floor-to-floor), you will require additional lengths of the chute.

    *

    Choose the fan voltage to match your power system. (Add additional fan units for replacement parts).

    All ELV (Extra Low Voltage) (12v-48V) are suitable for Off-grid power systems.

    Vent stack kit for installation.

    In residential applications, a vertical vent must extend 0.6m above the roofline - this is a code requirement.

    *

    You may need additional vent materials depending on how many storeys your building has.

    Single Storey buildings with a high-profile roof (A frame or mono-pitch) require extra lengths of vent pipe - add one 800mm Vent Pipe Extension

    Double Storey buildings require extra lengths of vent pipe. Please add 4 x 1m Vent Pipe Extensions.

    Double Storey building with a high-profile roof (A frame or mono-pitch) require extra lengths of vent pipe - add one 800mm Vent Pipe Extension

    Kit for stepping the vent stack around the eaves of the roof. Allows you to avoid penetrating the roof.

    A wind-driven vent offers the best redundancy for your system ventilation. 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.
    SharkVent™ | Wind Ventilator has high efficiency with a linear wind direction windvane (good for storm-prone areas).
    Universal Vent ACC | Wind-Driven Vent has high efficiency in low windage. 2 colours: white or black.

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

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

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

    Choose how you'd like to manage the liquid (leachate) produced by your composting toilet system:

    Discharge to Drain or Trench
    Divert excess leachate to an approved soakage trench, drain field, or dispersal area. This option is suitable for most installations with available drainage capacity and may require a resource consent under the Resource Management Act 1991 (RMA), depending on your local council’s rules.

    Zero Discharge System (Reticulation)
    Select our sealed zero-discharge system to recirculate leachate back into the composting chamber for evaporation or absorption. Since no liquid is discharged to land, water, or air, this option falls outside the scope of the RMA and typically does not require resource consent. Ideal for sensitive environments, remote sites, or areas with strict discharge regulations.

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

    System sizes with Automatic or Manual reticulation dosing cycle options
    Automatic operations are on timer, and Manual operations are user-operated.

    Small 80L system - Suitable for a light-use system 
    Large 450L system - Suitable for a heavy-use system

    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.

    Availability: Availability - on backorder and will be dispatched once in stock (On back-order – expected in approx. 3–4 months).
    $4,256.52 excl GST
    excluding shipping
    Estimated delivery time: Approx. 1–2 weeks (NZ-wide)
    i h
    Products

    Clivus Multrum™ | CM HP (High-Profile)

    If you need a higher-capacity composting toilet with only 750mm underfloor clearance, the CM HP is the Clivus Multrum™ answer.

    The CM HP is a high-capacity batching composting toilet designed for reliable performance in homes, cabins, and similar projects where space is tighter but a larger-capacity system is still needed.

    CM HP is certified to the Australian & New Zealand Standard 1546.2 and should be installed in accordance with the installation manual.

    THE CLIVUS MULTRUM™ HIGH-PROFILE SYSTEM

    "A batching system with larger-capacity performance and lower underfloor demand"

    CM HP is designed to meet the larger-capacity requirement of a few users through to family-scale use, while still working with a relatively modest underfloor clearance requirement of only 750mm. It brings Clivus Multrum™ performance into projects where a full larger continuous tank may be unnecessary or difficult to accommodate.

    CAPACITY AND BEST FIT

    The CM HP is suitable for couples, small families, or larger households looking for a luxurious composting toilet suited to most residential situations. As standard, it is positioned as a higher-capacity residential batching system, with the option to increase capacity and extend composting times by adding more chambers where needed.

    Residential batching positioning: CM HP sits below the larger continuous Clivus Multrum™ tanks in scale, but above many smaller systems in chamber size and flexibility. It is a strong option where underfloor height is limited, but users still want a premium underfloor composting setup with room to expand.

    KEY ADVANTAGES

    • High-capacity composting toilet designed for reliable performance with only 750mm underfloor clearance required
    • 2 x dual-walled composting chambers (120L each)
    • More chambers can be added where greater capacity or longer composting times are needed
    • Suitable for premium residential-style bathroom installations
    • Flexible pedestal options, including urine-diverting configuration where appropriate
    • 12-volt 5-watt fan system supports ventilation performance
    • Premium underfloor composting format in a smaller-profile batching configuration

    HOW THIS SYSTEM WORKS

    The CM HP is a batching composting system built around dual-walled composting chambers. This allows the system to be used in a staged way, with chamber capacity and composting time extended by adding more chambers where required.

    Because it is a high-profile batching system, CM HP is especially useful where underfloor clearance is tighter than many larger underfloor systems, but where users still want the advantages of a premium composting setup below the bathroom floor rather than a self-contained on-floor toilet.

    The live CM HP listing also allows different pedestal configurations depending on the use case. Where peak use or larger family gatherings are expected, the urine-diverting pedestal option can be appropriate. In those cases, it is recommended that the compost mass is kept adequately hydrated.

    PACKAGE INCLUDES

    The Clivus Multrum™ CM HP package includes:

    • 2 x dual-walled composting chambers (120L each)
    • Premium porcelain pedestal option and soft close seat
    • Waste connecting chute (55cm in length as standard)
    • Ventilation system including a 12-volt 5-watt fan in housing and transformer
    • 125ml Nature Flush Enzymes Concentrate & spray bottle
    • Microbiota MicrobeBURST™ Composting Additive
    • Bulking agent
    • Easy to follow DIY installation and maintenance manuals

    OPTIONAL EXTRAS

    • Additional chambers to increase system capacity or provide longer composting times
    • Urine-diverting pedestal option for peak-use or larger family situations
    • Nano-ceramic non-stick coating on the inner side of the pedestal for improved cleanability
    • Heater pad option to assist the composting process — installed during manufacturing only and not retrofittable later

    Cleaning is easy with a luxury Composting Toilet Washing Wand — add this accessory here.

    CERTIFICATION

    SAI Global Certification

    Certification

    Australian & New Zealand Standard 1546.2

    SAI Global certified technology

    Clivus Multrum™ composting toilet systems are certified against the AS/NZS 1546.2:2008 On-site domestic wastewater treatment units – Waterless composting toilets standard.

    For project planning, pedestal selection, chamber expansion, or installation advice, contact WCTNZ® on 0800 022 027.

    WCTNZ® is the exclusive authorised distributor of Clivus Multrum™ composting toilets in New Zealand. All Clivus Multrum™ products available through WCTNZ® are guaranteed authentic, include official manufacturer warranties, and come with comprehensive local customer support—making us New Zealand’s trusted source for sustainable, waterless composting toilet solutions.

    Customers who bought this item also bought