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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® 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


    Brand warranty periods

    Brand 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.

    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.

    Clivus Multrum™

    10 Years Limited Warranty WCTNZ® 10 Years Warranty
    • Roto moulded component — 10 years where stated for the specific model
    • Fibreglass component — 3 years where applicable
    • Porcelain component — 4 years where stated for the specific model
    • Polymarble component — 5 years where stated for the specific model
    • Fans, pumps, motors, and electrical components — 12 months unless stated otherwise
    • Solar panels or third-party components — relevant component manufacturer warranty where applicable
    • Any other component — 12 months unless stated otherwise for the specific model
    See full details

    WCTNZ® NZ warranty framework

    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.

    Clivus Multrum™ Warranty Terms and Conditions

    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.

    Exclusions

    • No cover for repairs or replacements required because installation, operation, or maintenance instructions were not followed.
    • No cover for vandalism, neglect, abuse, misuse, inadequate servicing, accident, alteration, unauthorised repair, or operation outside the system’s intended use.
    • No cover for deterioration of accessories due to normal wear and tear or exposure to the elements.
    • No cover for biological process failure, odours, capacity issues, moisture imbalance, composting failure, or performance issues caused by site conditions, user behaviour, maintenance, servicing, ventilation, drainage, loading, or operating conditions.
    • Site labour, removal, reinstallation, access work, tradesperson costs, travel, and consequential project costs are not included unless WCTNZ® agrees otherwise in writing or is required by law.

    Nature Loo™

    Up to 10 Years Limited Warranty WCTNZ® 10 Years Warranty
    • Alectura / rotomoulded chambers — 10 years
    • Fibreglass component — 3 years where applicable
    • Porcelain pedestal — 4 years where stated for the specific model
    • Polymarble pedestal — 5 years where stated for the specific model
    • 100mm fan housing — 5 years where stated for the specific model
    • Electrical components, including solar where applicable — 12 months
    • Toilet seats — 12 months
    • Any other component — 12 months unless stated otherwise
    See full details

    WCTNZ® NZ warranty framework

    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.

    Nature Loo™ Warranty Terms and Conditions

    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.

    Component periods

    • Rotomoulded component / Alectura chamber — up to 10 years where stated for the specific model.
    • Fibreglass component — 3 years where applicable.
    • Porcelain pedestal — 4 years where stated for the specific model.
    • Polymarble pedestal — 5 years where stated for the specific model.
    • 100mm fan housing — 5 years where stated for the specific model.
    • Electrical components, including solar where applicable — 12 months.
    • Toilet seats — 12 months.
    • Any other component — 12 months unless stated otherwise.

    Exclusions

    • No cover for damage resulting from neglect, abuse, accident, alteration, fire, flood, acts of God or other casualty.
    • No cover for damage or failure resulting from failure to follow normal installation, operating, servicing, or maintenance procedures outlined in the manual or other instructions supplied with the system.
    • No cover for biological process failure, odour, system saturation, moisture imbalance, system drying, capacity overloading, incorrect bulking agent use, or other user-management issues unless caused by a covered manufacturing defect.
    • Labour, service charges, site access, removal, replacement, reinstallation, return freight, tradesperson costs, or consequential project costs are not included unless WCTNZ® agrees otherwise in writing or is required by law.

    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.

    Sun-Mar™

    Up to 5 Years Limited Warranty WCTNZ® 5 Years Warranty
    • Fibreglass tank / fibreglass component — 5 years
    • Other Sun-Mar supplied parts/components — 3 years
    • Parts and accessories not sold or manufactured by Sun-Mar — excluded unless another warranty applies
    • Labour, service, removal and replacement charges — excluded unless WCTNZ® agrees otherwise or is required by law
    See full details

    WCTNZ® NZ warranty framework

    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.

    Sun-Mar™ Warranty Terms and Conditions

    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.

    Component periods

    • Fibreglass tank / fibreglass component — up to 5 years.
    • Other components — up to 3 years unless a shorter component-specific period applies.
    • Accessories, consumables, service items, or parts not supplied as core system components may have shorter or separate warranty terms.

    Exclusions

    • No cover for neglect, abuse, misuse, accident, alteration, fire, flood, acts of God, or other external casualty.
    • No cover for problems caused by failure to follow installation, operating, servicing, or owner instructions.
    • No cover for non-Sun-Mar accessories or third-party parts unless WCTNZ® expressly states otherwise in writing.
    • No cover for biological process failure, odour, incorrect operation, unsuitable ventilation, unsuitable drainage, overloading, moisture imbalance, lack of bulking agent, or user-management issues unless caused by a covered manufacturing defect.
    • Labour, service charges, site access, removal, replacement, reinstallation, freight, tradesperson costs, or consequential project costs are not included unless WCTNZ® agrees otherwise in writing or is required by law.

    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.

    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

    WCTNZ® NZ warranty framework

    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.

    Phoenix Composting Toilet™ Warranty Terms and Conditions

    EcoLet™

    2 Years Limited / 12 Months Full Parts WCTNZ® 2 Years Warranty
    • Full parts warranty — 12 months from original purchase
    • Body parts extended warranty — 2 years for top, seat, base and tray door
    • Labour for replacement of defective parts — customer responsibility unless otherwise agreed or required by law
    • Sanitised return and Return Material Authorisation required where a unit is returned for service
    See full details

    WCTNZ® NZ warranty framework

    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 Terms and Conditions

    EcoLet® warranty information published by WCTNZ®

    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.

    Extended body parts warranty

    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.

    Return and service conditions

    • Labour for replacement of defective parts is the customer’s responsibility unless WCTNZ® agrees otherwise in writing or is required by law.
    • If a customer cannot service the unit themselves, they may elect, at their expense, to completely sanitise the unit and return it for service.
    • Any unit received for service that is not sanitised may be refused and returned at the customer’s expense.
    • No unit may be returned for repair without authorised Return Material Authorisation. Returns without authorisation may be refused and returned at the customer’s expense.
    • This manufacturer warranty extends to replacement of defective parts only; additional costs are the customer’s responsibility unless WCTNZ® agrees otherwise or is required by law.

    Exclusions and limitations

    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.

    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

    WCTNZ® NZ warranty framework

    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.

    Bambooloo™ Warranty Terms and Conditions

    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.

    CompoCloset™

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

    WCTNZ® NZ warranty framework

    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.

    CompoCloset™ Warranty Terms and Conditions

    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.

    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

    WCTNZ® NZ warranty framework

    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.

    Kazuba™ Warranty Terms and Conditions

    DryLoo™

    20 Years Limited Warranty WCTNZ® 20 Years Warranty
    • Concrete chamber — 20 years
    • Colourbond flue — 10 years
    • Optional pedestals and accessory items — relevant manufacturer or WCTNZ® schedule
    • Any other component — 12 months unless stated otherwise
    See full details

    WCTNZ® NZ warranty framework

    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.

    DryLoo™ Warranty Terms and Conditions

    DryLoo™ warranty information published by WCTNZ®

    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.

    Conditions and exclusions

    • Coverage is limited to defects in materials or workmanship in the stated components during normal intended use.
    • No cover for installation defects, unsuitable foundations, site movement, drainage problems, flooding, corrosion exposure beyond specification, impact damage, misuse, vandalism, poor maintenance, user operation, or unauthorised alterations.
    • Site labour, crane/Hiab costs, excavation, removal, reinstatement, transport, access work, council/professional costs and consequential project costs are not included unless WCTNZ® agrees otherwise in writing or is required by law.

    Trelino®

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

    WCTNZ® NZ warranty framework

    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.

    Trelino® Warranty Terms and Conditions


    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 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.

    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 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.

    See full general warranty details

    General WCTNZ® NZ Warranty Framework

    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.

    General exclusions

    • incorrect product selection, incorrect installation, unsuitable site conditions, or failure to confirm suitability for the intended use;
    • incorrect commissioning, connection, drainage, ventilation, plumbing, electrical supply, water quality, wastewater integration, loading, or operating environment;
    • failure to follow product manuals, operating instructions, service requirements, maintenance requirements, consent conditions, or WCTNZ® support instructions;
    • misuse, neglect, abuse, accident, alteration, unauthorised repair, third-party modification, or use outside product specifications or rated capacity;
    • normal wear and tear, consumables, seals, filters, bulbs, batteries, fuses, chemicals, service items, cosmetic wear, or routine maintenance;
    • damage caused by flood, fire, storm, freezing, pests, contamination, power surge, unstable inverter supply, incompatible power supply, or other external events;
    • biological failure, odours, composting imbalance, system saturation, system drying, user loading, or user-management issues unless caused by a covered manufacturing defect.

    Claim evidence and assessment

    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.

    Costs not automatically covered

    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.

    Trade, commercial, project and council supply

    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.


    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®.