Who we are

At Semtex, we pride ourselves on providing professional, prompt, reliable, and top-quality solutions to your problems - big or small! 

Our experience completing projects of all sizes, both nationally and internationally, means we know what we’re doing, and can be trusted within domestic and commercial spaces.

A passion for innovation and initiative has helped Semtex become one of Manawatu’s premier plumbing companies. We take pride in accepting only the highest possible work standards, setting the benchmark for the industry and raising the bar for our competitors.

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How we work



    Semtex can assist with your plumbing problems.  Anything from a leaking tap to large commercial installations

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  • Drainage

    Semtex are drainage specialists.  Whether it is a sewer or stormwater line in need of repair, drain that needs laying, fixing or unblocking.

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  • Gas

    Semtex are your commercial and residential gasfitting service and installation technicians of choice.

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  • Mechanical

    Semtex provides specialist mechanical pipework services for a range of requirements both domestically and commercially

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  • Heating

    Semtex supply and install New Zealand’s widest range of heating appliances & central heating systems

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Contact us today

For queries or bookings related to our services