Premium water and liquid storage solutions for every sector

Promax is a New Zealand manufacturer of high-performance water tanks and engineered liquid storage products trusted by homeowners, builders, farmers, councils and civil contractors nationwide. With over 25 years of experience, we deliver durable, compliant and fit-for-purpose solutions built for New Zealand’s tough and varied conditions.

Our team designs and manufactures products that support projects of every scale, from small residential builds through to large civil and industrial installations. Consistent quality, technical accuracy and dependable service sit at the centre of everything we do.

Trusted manufacturing and engineering

Promax operates advanced manufacturing facilities in New Zealand, backed by rigorous quality control and locally focused engineering. This allows us to deliver reliable supply across the country, consistent product performance and solutions designed to meet New Zealand standards and real-world site requirements.

From rural water storage and residential builds through to civil infrastructure and industrial applications, our products are developed using practical feedback from contractors, builders, rural customers and industry specialists. The result is durable, fit-for-purpose liquid storage solutions that are easier to install, built to last and supported by fast turnaround on custom requirements when projects need something more specific.

Supporting four key sectors across New Zealand

New Zealand’s choice for quality and service

Merchants, trades professionals and major project partners rely on Promax because we combine strong products with responsive support. Our approach includes:

National customer service and technical assistance
Sales teams dedicated to Rural, Build, Civil and Industrial customers
In-house design guidance for complex requirements
Stock held across both North and South Island facilities

We are committed to delivering solutions that last, with the strength, safety and performance that New Zealand customers expect.

Partner with Promax

Whether you are upgrading water storage at home, specifying a subdivision, managing a civil project or sourcing robust industrial equipment, Promax provides dependable products backed by local expertise.

Choose Promax for quality you can trust, service that supports your project and solutions built for New Zealand conditions.