AVAILABILITY: ETA July 2025. Pre-order Now.
EcoLet™ | 240 Automatic - Model 25a – Automatic Waterless Composting Toilet
The EcoLet™ 240 25a automatic composting toilet. The EcoLet™ 240 25a is a self-contained, waterless eco-toilet designed for tiny homes, off-grid cabins, and eco-conscious households in New Zealand. It uses a true composting process – including internal heating and automatic mixing – to transform all waste into safe, odourless compost, with zero leachate (no liquid discharge).
This flush-free design safeguards groundwater and sensitive areas by containing and evaporating waste on-site.
Compact yet powerful, the EcoLet™ 25a is certified to AS/NZS 1546.2 standards, and comes with official manufacturer warranties and NZ-based support to ensure quality and trust in your off-grid sanitation solution.
Features
Waterless (no-flush) design – A fully dry toilet that saves thousands of litres of water.
By eliminating flushes, it can cut household water use by roughly 90% compared to conventional toilets.
Zero-leachate system – All liquid and solid waste is fully composted on-site in a sealed chamber, so no liquid effluent leaves the unit.
This makes it ideal for sensitive rural or coastal sites where discharge is prohibited.
40 L composting chamber with drying tray – A large solids bin collects waste, and built-in heating evaporates moisture.
The integrated drying tray and heater ensure rapid decomposition and virtually odour-free operation.
Urine-inclusive design – Handles both urine and solids together (no separate urine diverter needed).
This simplifies installation and maintenance.
Automatic mixing – A built-in electric mixer automatically stirs the compost after each use.
Simply lower the seat and the EcoLet™ 25a mixes the material for you, so no one can forget to activate it (very handy for guests and children).
Advanced odour control – Internal heating elements (hot-composting) and ventilation remove odours at the source.
Hot composting kills pathogens and prevents smells, so the toilet stays clean and fresh.
Easy user controls – A simple 4-setting control panel lets you adjust the mixing and composting cycle for different usage levels (e.g. full-time family or occasional use).
Robust construction – Sturdy toilet seat and lid, and durable on-floor design fit into small utility spaces (tiny homes, sheds, chalets).
It’s designed to support up to 3 people full-time (or 4 part-time), making it great for couples or small families.
Certified & supported – The EcoLet™ 25a meets NZ’s AS/NZS 1546.2:2008 standard for waterless composting toilets.
It is sold exclusively in New Zealand by WCTNZ®, ensuring authentic products, full manufacturer warranties, and expert local support.
Benefits
Huge water savings – With no flushes, every use saves 4-5 L of water.
Over a year, a family can save thousands of litres, reducing bills and conserving resources.
Eco-friendly composting – Transforms human waste into nutrient-rich compost.
The finished humus can be safely buried in gardens or woodlands, returning nutrients to the soil instead of polluting water.
Odour-free comfort – Hot composting and dedicated vents eliminate smells entirely.
Guests often remark on how clean and normal it feels – all the convenience of a modern toilet without chemicals or smell.
Environmental protection – Zero leachate means no blackwater effluent discharge at all, so nearby soils and aquifers stay clean.
The EcoLet™ 25a is ideal for protecting fragile ecosystems (wetlands, water table, etc.).
Minimal maintenance – User-friendly design requires little upkeep. Aside from occasionally adding bulking material, you just sit, and it works.
The automated mixing and robust build mean years of hassle-free use
Versatile use – Perfect as a primary toilet for full-time off-grid living or tiny homes.
It also excels as an emergency backup toilet (no water needed) during droughts or plumbing outages.
Trustworthy and safe – Fully tested and certified by SAI Global.
As New Zealand’s exclusive EcoLet™ distributor, WCTNZ® provides official warranties and expert support, giving you peace of mind with a proven, quality product.
Ideal For
Whether you’re preparing for full-time off-grid living or simply need a backup system that works without water, the EcoLet™ 240 25a is a smart, flexible solution for a wide range of Kiwi lifestyles:
Small families (supports up to 3 full-time users or 4 part-time)*
- For Small families*
- Holiday homes or baches
- Sheds or workshops with no plumbing
- Granny flats or self-contained cabins
- Backup toilet system during water shortages or outages**
*Capacity based on standard daily usage and composting cycle efficiency
**Ideal for emergencies, drought-prone areas, or secondary toilet use
 | | CertificationsAS/NZS 1546.2:2008 - On-site domestic wastewater treatment units - Waterless composting toilets
Licence Number. SMKH25591
Against the AS/NZS 1546.2
Under SAI Global |
Notes:
- Do not expose the ecoLet to full UV light
- Nature Quick Microbes are not available in NZ
WCTNZ® is the exclusive authorized distributor of EcoLet™ composting toilets in New Zealand. All EcoLet™ products available through WCTNZ® are guaranteed authentic, include official manufacturer warranties, and come with comprehensive local customer support—making us New Zealand’s trusted source for sustainable, waterless composting toilet solutions.
Copyright © 2025 Waterless Composting Toilets NZ Limited (WCTNZ®). All short and long product descriptions and content are the property of WCTNZ® | Waterless Composting Toilets NZ. All rights reserved.
This content has been reviewed and approved by Dylan Timney, Managing Director of WCTNZ®, who brings over 17 years of composting toilet expertise and 16 years of experience in building and eco-construction in New Zealand.
Last reviewed: June 26, 2025
