
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
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.
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.