Discover the warranty coverage for WCTNZ® composting systems. This page explains how to set up warranty after installation, what is covered, what is not covered, and how to make a claim.
For all other WCTNZ® product warranties, please see General Warranties.
Warranty protection applies by brand and model, and is generally limited to defects in materials or workmanship during normal use. Coverage is subject to the relevant manufacturer warranty period, product requirements, installation requirements, operating manual, evidence supplied, and applicable law.
Nothing on this page excludes or limits any rights or remedies that cannot lawfully be excluded under New Zealand law.
A composting toilet is an on-site biological processor, not a plug-and-forget appliance. Moisture control, carbon balance, aeration, volume, rated capacity and maintenance all affect system performance.
WCTNZ® composting toilet systems are supplied as sanitary fixtures and biological processing systems. Warranty applies to covered hardware defects, not to biological outcomes caused by incorrect operation or management.
Many WCTNZ® composting toilet systems are supplied for fixed installation in residential, commercial, remote, or off-grid projects and may be subject to site-specific design, consent, installation, ventilation, drainage, and operational requirements.
Depending on the product and installation context, council approval, building consent, plumbing or drainlaying input, and compliance with the New Zealand Building Code or other applicable requirements may be necessary.
Product-specific compliance information, installation manuals, and any applicable Classification / Compliance Notice should be reviewed before installation.
Warranty protection applies per brand/model, including key components. Coverage is limited to defects in materials or workmanship during normal use. Refer to each brand’s full terms and conditions below for details.
The outer shell of a composting system that houses the inner chambers.
The primary composting chamber or tank where waste is received.
The primary toilet fixture, subject to the relevant brand and component warranty period.
Electrical components and supplied connections, subject to the relevant electrical warranty period and power-supply exclusions.
Seats, ventilation pipe, drainage fittings, and other accessories where included in the relevant brand warranty.
Replacement parts may be supplied where inspection shows a covered failure due to defective material or workmanship.
The following items are generally not covered by warranty. Brand-specific terms may include additional exclusions or requirements.
Damage from improper installation, misuse, or alterations
Faults due to external power supply incompatibility, including off-grid inverter issues
Normal wear and tear or consumables
Labour charges and parts for issues found unrelated to manufacturing defects
Labour charges for issues found within the warranty period unless expressly covered in writing
Freight, return shipping, delivery of replacement parts, or logistics costs unless otherwise stated
Notify WCTNZ® via warranty@wctnz.co.nz and provide the following information:
SO number of the unit, where available
SN number of the unit, where available
WCTNZ® order number
Current contact details
Description of the fault
Photographs of the fault
Photographs of the full installation, including inside, outside, underfloor areas for split systems, vent stack, drain, power supply, and any other connections
Notify WCTNZ® via warranty@wctnz.co.nz and provide the required information before sending parts or goods back for inspection.
Photo / evidence requirements of the parts, the whole system installation, and any electrical system connected with the system
Return Authorisation (RA) process may apply
Testing charges will apply when no fault is found
Freight responsibilities are borne by the customer at all times unless otherwise agreed in writing
WCTNZ® is to furnish new parts to a customer whose toilet fails within the allotted warranty period for the particular component, provided that inspection shows that such failure is due to defective material or workmanship.
Any part supplied is warranted for the balance of the original warranty period based on the respective manufacturer’s warranty
All support information for warranty claims is to be supplied by the customer to WCTNZ® within 21 days of alerting WCTNZ® to the fault
The warranty period for a part begins from the date the original product was dispatched, plus 5 additional days for transportation
All faulty parts are to be returned to WCTNZ® where reasonably required for assessment; shipping of these is the customer’s responsibility unless otherwise agreed by WCTNZ® or required by law
If a warranty replacement part is sent out and the original part is proven not to be faulty, the customer will be charged for the replacement part
WCTNZ® endeavours to hold replacement parts in stock to the best of our ability. If replacement parts are not available at the time of a warranty claim, logistics costs from the point of origin may apply unless otherwise agreed by WCTNZ® or required by law
Warranty periods vary by brand, product, and component. The periods below are a practical overview. Use the “See full details” panel under each brand to review the relevant brand-specific terms or the general terms that apply where no unique terms are stated.
Warranty basis: WCTNZ® publishes brand warranty periods and product-specific warranty terms as part of its New Zealand warranty framework. Supplier or manufacturer source names are not repeated in the main copy unless required for product identification.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
The Clivus Multrum™ warranty schedule published by WCTNZ® provides the component periods stated above. For the Clivus Multrum™ High Profile system, the roto moulded component is stated as having a 10 year warranty.
Purchaser obligations: The purchaser must use, install, operate, and maintain the system strictly in accordance with the installation, operation, and maintenance instructions supplied for the relevant model. Any warranty claim should be submitted in writing before the warranty period expires and should include the tank serial number, installer details, proof of purchase, photographs, and any other information reasonably requested by WCTNZ®.
Remedy: Where a valid limited warranty claim is accepted, the defect may be corrected by suitable replacement or repair. Repaired or replaced components carry warranty for the balance of the applicable original warranty period unless WCTNZ® states otherwise in writing.
Component exceptions: Fans, pumps, motors, electrical components, solar panels, and other third-party components may be limited to the component period stated above or the relevant component manufacturer warranty where applicable.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
The Nature Loo™ warranty schedule published by WCTNZ® applies where a Nature Loo™ toilet or component fails within the allotted warranty period and inspection shows that the failure is due to defective material or workmanship. Any replacement part supplied under warranty is warranted for the balance of the original warranty period.
The warranty period for a replacement part begins from the date the original product was dispatched, plus five additional days for transportation.
Warranty returns must be authorised by WCTNZ® before goods are returned. Disputed claims may require photographs, product information, installation evidence, or physical assessment before a warranty decision is made.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
The Sun-Mar™ warranty schedule published by WCTNZ® applies where the toilet or component fails within the relevant warranty period and inspection shows that the failure is due to defective material or workmanship under normal house or cottage use.
Warranty returns must be authorised by WCTNZ® before goods are returned. WCTNZ® may require photographs, product information, installation evidence, or physical assessment before approving warranty support.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
EcoLet® warranty information published by WCTNZ® for EcoLet®, EnviroLet and BioLet® toilets states that parts defective in material or workmanship due to normal use in accordance with the owner’s manual may be repaired or replaced for a period of twelve (12) months from the date of original purchase.
Proof of purchase may be required, such as a warranty registration record or a copy of the original invoice. After assessment, replacement parts and replacement instructions may be supplied to the customer where the claim is accepted.
In addition to the full parts warranty, The supplier warranty information states that for a period of two (2) years from the date of original purchase the supplier will replace unit body parts — including top, seat, base and tray door — where defective in material or workmanship due to normal use in accordance with the owner’s manual.
If the exact replacement part is not available, the supplier may supply modifiable parts or issue a credit equal to the value of the part to be deducted from the purchase of a new unit.
Manufacturer wording states that the warranty is provided to the original customer only and does not apply to subsequent owners. It also states that liability is limited to repair or replacement of defective items, or payment of the cost of replacement or repairs to defective items, subject to WCTNZ®’s NZ warranty administration framework and applicable New Zealand law.
Excludes general wear and tear.
Follow the Bambooloo maintenance guide and treat your Bambooloo system like you would a beautiful piece of furniture.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
Maintenance note: Bambooloo products require correct use, care, cleaning, dry storage, moisture management, and ongoing maintenance. General wear and tear, weather exposure, misuse, biological/user-operation issues, and failure to follow maintenance requirements are excluded unless WCTNZ® agrees otherwise in writing or is required by law.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
Brand-specific wording retained on page: The CompoCloset™ text below is retained as product-specific warranty wording currently published by WCTNZ® for this brand, subject to WCTNZ®’s NZ warranty framework and applicable New Zealand law.
Compo Closet Ltd warrants to repair or replace any CUDDY™ Composting Toilet and its components made by Compo Closet and purchased directly from Compo Closet or Compo Closet’s authorized distributors and dealers if it is found defective in material, construction, or workmanship under normal use and following instructions for installation, use, and care for a period of two (2) years from the date of purchase and or delivery in the case of pre-orders.
This Limited Warranty is valid only in the countries where Compo Closet sells directly or through its authorized distributors and dealers.
Should your product require warranty service, please contact us at info@compocloset.com for a warranty evaluation. Upon approval of your claim, Compo Closet will repair or replace the item(s) without charge. At this time Compo Closet will decide whether or not to have the items returned postage prepaid to Compo Closet or if they should be according to local laws properly disposed of.
This warranty extends to the original purchaser only and is non-transferable. This warranty does not cover any problems caused by any condition, malfunction, or damage:
a. Caused by defects other than defects in materials or workmanship
b. Resulting from normal wear and tear
c. Improper installation
d. Improper maintenance or repair
e. Misuse, abuse, negligence, accident, alteration of a part or the product
f. Or any external causes
g. Or to any accessories, materials, products, or parts not manufactured or supplied by Compo Closet Ltd.
Except as provided in this warranty and to the maximum extent permitted by applicable law, Compo Closet Ltd. is not responsible for special, incidental or consequential damages, including but not limited to damages to personal or real property, resulting from any breach of warranty or condition, or under any other legal theory, including but not limited to loss of use. The foregoing limitation shall not apply to death or personal injury claims, or any statutory liability for intentional and gross negligent acts and or omissions.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
The DryLoo™ warranty schedule published by WCTNZ® provides a 20 year warranty for the concrete chamber and a 10 year warranty for the Colourbond flue for DryLoo™ systems.
The component schedule above is treated as the WCTNZ® published warranty schedule for this product group unless a product manual, quotation, invoice, project document, or confirmed brand-specific warranty states otherwise.
The manufacturer, brand-owner, supplier, WCTNZ-backed, or product-specific warranty information in this section is published, forwarded, or summarised by WCTNZ® for product-specific warranty guidance. It operates together with WCTNZ®’s Terms and Conditions, Shipping and Returns Terms, Testing and Repair Policy, product manuals, installation requirements, and applicable New Zealand law.
Publication of warranty wording does not expand WCTNZ®’s voluntary warranty beyond the stated manufacturer, brand, supplier, WCTNZ-backed, quotation, invoice, or project-specific warranty position.
Where the warranty wording was prepared for another jurisdiction, or where no separate manufacturer warranty document is available in a form suitable for publication, WCTNZ® will administer the warranty under its New Zealand warranty framework, except to the extent prohibited by New Zealand law.
A composting toilet is not a "plug-and-forget" appliance; it is an on-site biological processor. As the importer and specialist provider, WCTNZ® provides a Limited Limited Warranty covering the mechanical and structural integrity of the hardware. However, the functional success of any composting system depends entirely on active user management.
As the operator of this technology, you are responsible for:
Moisture Management: Preventing "system drowning" or anaerobic conditions caused by excessive liquid or insufficient carbon.
Carbon Balance: Ensuring the consistent addition of high-quality bulking agents (such as peat, hemp, or coco coir) to maintain the correct C:N ratio.
Aeration & Volume: Managing the pile density and ensuring the system is not used beyond its rated capacity.
Under the CGA, a product is of "acceptable quality" if it is fit for its intended purpose. Our systems are engineered to compost effectively only when managed according to the provided technical protocols and WCTNZ® specialist feedback regarding system use.
WCTNZ® Limited Warranties cover manufacturing defects (such as fan failure or structural shell cracks). Our warranties do not cover biological failure, odours, or system "crashing" caused by user error, lack of maintenance, or failure to follow the operational manual and professional advice. User Knowledge = System Success.
WCTNZ® products may be supported by a manufacturer, brand-specific, supplier, or WCTNZ-backed limited warranty where stated. Limited warranties cover only specified parts or defects and operate subject to the relevant product requirements, installation requirements, operating manual, evidence supplied, WCTNZ®’s NZ warranty framework, and applicable New Zealand law.
These general terms apply where a product, brand, supplier, manufacturer document, quotation, invoice, or project schedule does not state a more specific warranty position.
Warranty support is generally limited to defects in materials or workmanship arising during normal intended use within the applicable warranty period stated on this page or in the relevant manufacturer, brand, supplier, quotation, invoice, or project document.
WCTNZ® may require proof of purchase, model information, SO/SN numbers, photographs, installation evidence, maintenance records, fault description, return authorisation, testing, inspection, or supplier/manufacturer review before approving warranty support.
Unless expressly stated in writing, warranty support does not include site labour, removal, dismantling, access work, reinstallation, recommissioning, tradesperson costs, travel, accommodation, excavation, building work, plumbing work, electrical work, freight, return shipping, or consequential project costs.
For trade, commercial, project, council, infrastructure, accommodation, rental, or other non-consumer supply, additional quote terms, project terms, trade terms, credit-account terms, or lawful CGA contracting-out provisions may apply where agreed in writing.
This framework applies except to the extent prohibited by New Zealand law.
All WCTNZ® systems are engineered and supplied as Sanitary Fixtures as defined by the Building Act 2004 and the Plumbers, Gasfitters, and Drainlayers Act 2006.
Regulatory Standing: Unlike a "Sanitary Appliance" (e.g., a dishwasher) or a "Household Appliance" (e.g., a heater), a composting toilet is a permanent, fixed soil fixture. Its performance is governed by its mechanical compliance with AS/NZS 1546.2:2008 and the NZ Building Code.
Performance vs. Management: As a biological processing unit, the system’s effectiveness is contingent upon the user maintaining the correct environment (C:N ratio, moisture, and capacity). Mechanical warranty covers the hardware only; it does not guarantee biological outcomes if the system is managed outside of the provided technical manual.
Fitness for Purpose: The "fitness" of the unit is defined by its mechanical ability to facilitate a biological process. Because these are biological processing systems, failure to maintain the correct biological balance or exceeding rated person-capacities constitutes user-error rather than a product defect.
Low Risk Article: Under the Electricity (Safety) Regulations 2010, composting toilets are not "Declared Articles" and are therefore classified as Low Risk.
Safety Standards: In accordance with Regulation 81, these units meet the "Essential Safety" mandate via compliance with AS/NZS 3820. They are manufactured to international standards (e.g., CE, UL, or NSF) which are legally recognized in New Zealand as evidence of safety. A local Supplier Declaration of Conformity (SDoC) is not required for Low Risk articles.
Installation: Any 230V AC installation must be verified by a licensed electrician to ensure the supply is stable and the earthing is compliant with AS/NZS 3000.
Systems (12V/24V DC): Systems operating on DC voltage (typically fan-only units) fall under the Extra-Low Voltage threshold (<120V ripple-free DC). These are considered inherently low-risk and are governed by the same "essential safety" mandates of AS/NZS 3820 to ensure user safety without requiring high-voltage compliance marking.
All electrical products must be used with compliant power sources and installed according to New Zealand electrical safety standards.
Please refer to our full Electrical Safety and Usage Disclaimer for critical information on off-grid systems, inverter compatibility, and installer responsibilities.
Send your warranty claim details, order information, SO/SN numbers where available, fault description, and installation photographs to WCTNZ®.