Our Services

Semtex provide plumbing, gas, drainage, pipelaying, and mechanical services fast, safe, and efficiently, 24 hours a day, 7 days a week, 365 days a year – straight to your door.
  • GENERAL PLUMBING
    MAINTENANCE & REPAIRS

    Whether it’s dripping taps, faulty water heaters, low water pressure, or clogged toilets- we do it all!






  • LEAKING HOT WATER CYLINDERS

    Repairs or replacements on hot water cylinders, to ensure you don’t run out of hot water when you need it
  • LEAK DETECTION

    Leaks can cost money by causing water damage to appliances and property, as well as water wastage. If you’ve got a leak, get on the phone to Semtex now!
  • ROOF LEAKS &MINOR REPAIRS

    A roof leak can cause mould and mildew growth, occupying carpets, furniture, and even clothing. The Semtex team can repair your leaky roof hassle-free.
  • HOT WATER INSTALLATIONS & SERVICE

    If it’s a residential new-home build or renovation, or a hot water system at a commercial property, we’ve got the skills and know-hot to install and service a wide range of hot water systems.
  • PREVENTATIVE PLUMBING MAINTENANCE

    To reduce the risk of plumbing issues turning from small to big, preventative plumbing maintenance is recommended.
  • WATER SOFTENER SYSTEMS

    These remove hardness-causing calcium and minerals from your water, reducing the risk of scale build-ups and failed water pressure.
  • UV WATER TREATMENT

    UV water treatment is the most effective method for disinfecting bacteria from the water and making it safer for you and your family.
  • UNBLOCKING TOILETS & DRAINPIPES

    Blocked toilets and drainpipes don’t just cause bad odour, they also pose health risks and leaks
  • RESIDENTIAL & COMMERCIAL SEWER/STORMWATER DRAINLAYING

    Our team covers drainlaying in both the residential, commercial & civil fields.




  • GENERAL REPAIRS & MAINTENANCE

    Need a broken pipe fixed or upgraded, we carry out small to large repairs.
  • SEPTIC TANK & EFFLUENT FIELDS INSTALLATION/SERVICING

    Agents for Hynds & Biorock wastewater systems including all servicing of any septic or effluent field.
  • DRAINAGE PUMPS

    Let our experienced technicians fix or repair any sewage or stormwater pump.
  • UNBLOCKING

    Blocked drains don’t just cause bad odour, they also pose health risks and leaks. The team at Semtex have the latest technology and equipment to get to the bottom of the blockage.
  • EXCAVATION

    We have all excavation and trenching covered with the best plant and equipment maintained to be operational at all times.
  • CCTV DRAIN INSPECTION

    Highley trained CCTV operators on hand to inspect any stormwater/sewer pipe for problems with location and depth. Detailed inspection reports provided.
  • HYDRO JETTER ROOT CUTTING & PIPE CLEANING

    5000 Psi drain cleaning machine with root cutting heads that clears and cleans any blockage drain on call 24/7.
  • COMMERCIAL & CIVIL DRAINAGE

    We install large diameter uPVC, RCP and HDPE pipework with our pipelaying team.
  • RESIDENTIAL GAS
    INSTALLATION & ALTERATIONS

    Moving your gas hob or wanting a new gas fire installed we have the solutions for you.






  • COMMERCIAL GAS INSTALLATION & ALTERATION

    Specialists in commercial kitchens, laundries, plantrooms and underground HDPE gas pipework installations.
  • RENOVATIONS

    Have a small gas job and need a gas pipe moved we can help out.
  • INTERNAL/EXTERNAL HOT-WATER INFINITY UNITS

    Rinnai Infinity and Rheem Integrity installation specialists in natural gas and LPG.
  • GAS METERS & REGULATORS

    Gas meter and gas regulator technicians available for installation or replacement.
  • GAS INSTALLATION AUDITS

    Need your site or building audited to make sure it complies with Gas (Safety and Measurement) Regulations 2010 Act. We can provide full site reports with recommendations to execute work required to comply.
  • RESTAURANTS & CAFES

    Commercial gas ovens/stoves, hobs, deep fryers, salamanders, brat pans servcing by our expert gasfitting technicians and 24/7 contracted breakdown services.
  • APPLIANCE MAINTENANCE & REPAIRS

    Gas fire, hob, energy saver heaters repairs and servicing specialists for Rinnai, Escea, Bosch to name a few.
  • FLUE GAS & COMBUSTION ANALYSIS

    Flue Gas Analysing of Oxygen (O2), Carbon Monoxide (CO), Carbon Dioxide (CO2) and flue gas temperatures are present, room CO monitoring.
  • RADIATOR HEATING RESIDENTIAL & COMMERCIAL BUILDINGS

    Do you need a properly designed and installed radiator heating system along with a recommend heat source




  • MECHANICAL PIPEWORK INSTALLATION

    We provide a range of pipefitting installation in SCH80 uPVC & CPVC, PPR with extensive experience in welded steel and hydraulic crimped piping systems.
  • HYDRONIC HEATING & COOLING SYSTEMS

    We can install, maintain and repair any hydronic heating or cooling system be it underfloor, fan convection, radiators & air handlers AHU.
  • DUCTED GAS HEATING UNITS AND THEIR RELATED DUCTWORK

    Gas furnaces and ductwork for residential installations, upgrades to existing and maintenance solutions.
  • INSULATING PIPING USED FOR HOT WATER OR STEAM PIPES

    Experienced insulation installation for plantrooms, hotwater, cooling and steam pipe work with Armecell FRV, Fibreglass and Foamglas.
  • GAS AND DIESEL BOILERS

    Installation of residential & commercial natural gas, LPG and diesel boilers and servicing includes flue gas analysing, combustion cleaning, flue cleaning.
  • AIR TO WATER HEAT PUMPS

    Heating or cooling source for our hydronic heating and cooling systems and hot water production.
  • LARGE VOLUME HOT WATER PRODUCTION SYSTEM

    Industrial and commercial hot water production plant room fit outs and refurbs. Design build plantrooms. Preventative maintenance plans & breakdown services.
  • CHEMICAL PIPEWORK

    Installation of specialist chemical pipework in Vulcathene, Grorge Fischer, HDPE & PVC Schedule 80 / CPVC Schedule 80 including valves and dosing stations.


Contact us today

For queries or bookings related to our services

Emergency 0800 473 6839 (0800 4 SEMTEX)

General Inquiries 0800 473 6839 or Mobile 022 194 5892

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Phone

0800 473 6839

Email

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