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    Composting Systems Warranties

    Composting Systems Warranty Overview

    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.

    Important warranty note

    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.

    Covered
    Defects
    Materials or workmanship during normal use
    Evidence
    Required
    Order, SO/SN numbers, photos and installation details
    Excludes
    Misuse
    Incorrect installation, operation, power supply or maintenance
    Process
    Review
    Assessment may require testing, repair, or return authorisation

    Composting toilets require active management

    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.

    These systems have a technical and regulatory framework

    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.

    Installation and compliance context

    Fixed composting toilet systems need proper installation and operation

    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.


    General warranty position

    What is generally covered

    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.

    Toilet housings

    The outer shell of a composting system that houses the inner chambers.

    Chambers and tanks

    The primary composting chamber or tank where waste is received.

    Pedestal

    The primary toilet fixture, subject to the relevant brand and component warranty period.

    Electrical components

    Electrical components and supplied connections, subject to the relevant electrical warranty period and power-supply exclusions.

    Accessories

    Seats, ventilation pipe, drainage fittings, and other accessories where included in the relevant brand warranty.

    Replacement parts

    Replacement parts may be supplied where inspection shows a covered failure due to defective material or workmanship.


    Warranty exclusions

    What is generally not covered

    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


    Warranty claim process

    How to make a warranty claim

    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


    Testing and repair

    How to return for Testing & Repair Service

    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


    Replacement parts

    Replacement parts and parts availability

    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®; shipping of these is the customer’s responsibility unless otherwise agreed

    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, the customer is responsible for covering all logistics costs from the point of origin


    Manufacturer warranty periods

    Manufacturers’ Warranty Periods & Terms and Conditions

    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.

    Clivus Multrum™

    10 Years Limited Warranty WCTNZ® 10 Year Warranty
    • Any electrical component — 12 months
    • Any rotomoulded component — 10 years
    • Any fibreglass component — 3 years
    • Any porcelain component — 4 years
    • Any polymarble component — 5 years
    • Ecoflo 100mm fan housing — 5 years
    • Toilet seats — 12 months
    • Any other component — 12 months
    See full details

    Clivus Multrum™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.

    Nature Loo™

    10 Years Limited Warranty WCTNZ® 10 Year Warranty
    • Any electrical component — 12 months
    • Any rotomoulded component — 10 years
    • Any fibreglass component — 3 years
    • Any porcelain component — 4 years
    • Any polymarble component — 5 years
    • Ecoflo 100mm fan housing — 5 years
    • Toilet seats — 12 months
    • Any other component — 12 months
    See full details

    Nature Loo™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.

    Sun-Mar™

    5 Years Limited Warranty WCTNZ® 5 Year Warranty
    • Fibreglass base component — 5 years
    • Pedestals: fibreglass / porcelain / polymarble — 3 / 4 / 5 years
    • Any other component — 1 year
    See full details

    Sun-Mar™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.

    Phoenix Composting Toilet™

    10 Years Limited Warranty WCTNZ® 10 Year Warranty
    • Any rotomoulded component — 10 years
    • Mechanical components — 10 years
    • Any other component — 1 year
    See full details

    Phoenix Composting Toilet™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    Below terms apply to all brands that do not have unique terms and conditions.

    See the general warranty terms and exclusions set out further down this page.

    EcoLet™

    1 Year Limited Warranty WCTNZ® 1 Year Warranty
    • Toilet and all parts — 1 year
    See full details

    EcoLet™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    Below terms apply to all brands that do not have unique terms and conditions.

    See the general warranty terms and exclusions set out further down this page.

    Bambooloo™

    2 Years Limited Warranty WCTNZ® 2 Year Warranty

    Excludes general wear and tear.

    Follow the Bambooloo maintenance guide and treat your Bambooloo system like you would a beautiful piece of furniture.

    • Structural — 2 years
    • Toilet seats and components — 1 year
    • Any other component — 1 year
    See full details

    Bambooloo™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.

    CompoCloset™

    2 Years Limited Warranty WCTNZ® 2 Year Warranty
    • 2 Year Limited Warranty
    See full details

    CompoCloset™ Warranty Terms and Conditions

    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.

    EXCLUSIONS

    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.

    LIMITATION OF LIABILITY

    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.

    Kazuba™

    10 Years Limited Warranty WCTNZ® 10 Year Warranty
    • Composting toilet chamber and components — 10 years
    • SkyVents (wind directional ventilator) — 10 years
    • Pedestals — 5 years
    • Solid waste baskets — 2 years
    • Any electrical component incl solar — 1 year
    • Toilet seats — 1 year
    • Any other component — 1 year
    See full details

    Kazuba™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.

    DryLoo™

    20 Years Limited Warranty WCTNZ® 20 Year Warranty
    • Concrete chamber — 20 years
    • Colourbond flue — 10 years
    • Any porcelain component — 4 years
    • Any polymarble component — 5 years
    • Any other component — 1 year
    See full details

    DryLoo™ Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.

    Trelino®

    1 Year Limited Warranty WCTNZ® 1 Year Warranty
    • Toilet and all parts — 12 months
    See full details

    Trelino® Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    These terms apply together with the general warranty terms and exclusions set out further down this page unless brand-specific terms state otherwise.


    Full operating responsibility

    Biological System & User Responsibility

    See full biological system responsibility

    Important: Biological System & User Responsibility

    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 Manufacturer’s 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.

    Legal Note on the Consumer Guarantees Act (CGA):

    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.


    General full details

    Warranty Terms and Conditions

    WCTNZ® products come with a Manufacturer's Limited Warranty, as required by the Building Act 2004. Limited Warranty covers only certain parts or defects with specific limitations. WCTNZ® is there to assist you in the claims process, but all final decisions are at the manufacturer's discretion. Warranty periods and conditions per manufacturer are laid out above.

    See full general warranty details

    Below terms apply to all brands that do not have unique terms and conditions

    These warranties do not cover:

    • Damage resulting from neglect, abuse, accident or alteration; or damage caused by fire, flood, acts of god or other causality
    • Damage resulting from failure of the purchaser to follow normal installation and operating procedures outlined in the manual or in any other printed instructions supplied with the system
    • Labour and service charges incurred in the removal and replacement of any parts found defective under this warranty
    • Cost of delivery of replacement parts

    Full Definitions of Warranty

    1. Subject to clause 18(c), all goods supplied are covered by such warranty as is specified by the manufacturer and supplied subject to the product standards detailed by the manufacturer.
    2. The Buyer shall immediately notify the Seller in writing upon discovery of any defect in the goods. The Buyer shall not carry out any remedial work to alleged defective goods without first obtaining the written consent of the Seller.
    3. The only conditions and warranties which are binding on the Seller in respect of the state, quality of the goods supplied by it to the Buyer are those imposed and required to be binding by statute (including the Trade Practices Act 1974) and to the extent permitted thereby, the liability, if any, of the Seller arising from the breach of such conditions or warranties, shall at the Seller's option be limited to and completely discharged by:
      1. replacement of the goods with equivalent goods; or
      2. the repair of goods; or
      3. the payment of the cost of replacement of the goods; or
      4. the payment of the cost of repair of the goods provided that in all such cases any freight costs and costs of dismantling and re-assembly shall be borne by the Purchaser. All other conditions and warranties whether expressed or implied by law or otherwise in respect of the state, quality or condition of the goods which may apart from this clause be binding upon the Seller are hereby expressly excluded and negated
    4. The Buyer expressly acknowledges and agrees that it has not relied upon and the Seller is not liable for any advice given by the Seller, its agents or employees in relation to the suitability for any purpose of goods or materials supplied by the Seller.

    Liability of Seller

    1. Except as expressly provided herein and to the extent permitted by law:
    2. the Seller shall not be under any liability, whether in contract, tort or otherwise in respect of defects in goods delivered or for any injury, damage or loss resulting from such defects or from any work done in connection therewith except to the extent that any statute applicable to these Terms and Conditions expressly prevents the exclusions, restriction or modification of such terms and conditions
    3. the Seller shall not be liable to the Buyer for any loss of profit whatsoever arising nor shall the Seller be under any liability whether, in contract, tort or otherwise nor for any injury, damage or loss whether consequential or otherwise save as is expressly provided in these Terms and Conditions;
    4. the Buyer indemnifies the Seller against any liability to or action by a third party in respect of goods manufactured to the Buyer's specification;
    5. all goods are supplied in accordance with usual industry standards and the Seller shall not be liable to the Buyer for the condition or quality of goods which comply with these standards.

    Alteration to Conditions

    The Seller may at any time alter these Terms and Conditions at the point of Quotation or Sale.


    Technical and legal framework

    Nature of Technology & Regulatory Framework

    See full technical and legal framework

    Nature of Technology & Regulatory Framework (The "Legal Distinction")

    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.

    Sanitary Fixtures:

    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.

    Electrical Risk Classification (230V-240V AC):

    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.

    Extra-Low Voltage (ELV):

    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.

    Important Note on Power Supply Compatibility

    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.


    Need to make a warranty claim?

    Send your warranty claim details, order information, SO/SN numbers where available, fault description, and installation photographs to WCTNZ®.