• out of stock

50m SmarteX Hot Water Pex Pipe 20mm $19 + Delivery ($0 in-Store/ C&C) @ Bunnings


Was pricing up a job and spotted this… 50m of 20mm hot water tolerant Pex pipe for $19 is insanely cheap, I suspect this is a pricing error, as it should be easily over $100. EG: https://plumbingsales.com.au/pex-pipe-and-fittings-pull-on/2...

50M of the same brand of non-hot water tolerant Pex pipe in black is $126: https://www.bunnings.com.au/smartex-20mm-x-50m-pex-pipe_p495...

Pex is commonly used for plumbing caravans and motorhomes, water tanks on your property etc. Some people plumb their whole house with it instead of copper piping.

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  • 50M of the same brand of non-hot water tolerant Pex [costs more]

    This is not entirely new. I bought a roll of the red 16mm a couple of years back. It was way cheaper than the black, and Bunnings staff could not explain why.
    So I used it for both hot and cold.

    The red pex pipe no longer seems to be sold in WA (not on website), so I guess it is a clearance?

    • exactly same ,,, guy in the plumbing section could not explain why it is cheaper… now hot water pipe in my garden :)

    • The 16mm one is now abt $9. I just bought a roll the other day, too cheap to miss.

  • Bunnings Swap with snag..! bit expensive snag. lol

  • Page Not Found
    Sorry, we hit a snag!


    • Ordered one, I am in Southeast Melbourne.

    • +1

      You posted the same link as me, I think bunnings has started blocking direct access to the URL lol.

      You can still find it if you go to the bunnings site and search "SmarteX 20mm x 50m Hot Water Pex Pipe"…

      Alternatively, if you go in store, the price on the shelfed item is also $19.

      • We found 0 results for

        'SmarteX 20mm x 50m Hot Water Pex Pipe'

  • @ luce2339 Page Not Found :(

  • +6

    Pex is commonly used for plumbing caravans and motorhomes, water tanks on your property etc. Some people plumb their whole house with it instead of copper piping.

    I would say most if not all houses build in the last 10+ years no longer use copper, because copper is way too expensive.

    • +1

      Pex started to grown in use by the year 2000. By 2005 even all the old school plumbers switched over to it

    • For new houses, one of the main reasons was because copper would be stolen while under construction.

      • +2

        Pex is also quicker, cheaper and safer. Holding a oxy torch upside down is no fun and the freedom to fully rotate the connections made it a game changer

    • my understanding is that you have to use copper for in-slab or concrete wall chased applications still?

      walk through any plumbers supply yard and there will be hundreds of lengths of copper so i don't think it is not being used in new house construction.

    • Polybutylene was first to try and replace copper but had a few issues to start with but now is a way better push fit system than pex (because of the softer pipe). PEX (cross linked polyethylene) is more rigid but really requires a tool to install properly, either crimp fit or pull fit. The pex push fit systems seem to be not as good as the Polybutylene ones.

      I believe the red pex is a US/UK hot water style as they have several types red for hot and blue for cold and an underfloor one as well.

  • +1

    Got one. Search smartex from bunnings website and still showing $19

    • ……

  • +6

    I got one, not sure why.
    It was there and then it wasn't there then it was there again.
    I had to buy before it went away again.

    • Username checks out.

    • +1

      same here.
      BUT as an ozbargainer, BUY NOW PLAY LATER

  • How much hot water comes with this?

    • +16

      Depends on the missus and how much trouble you are in😂

      • +2

        Boom Tish, have an upvote when I am allowed to upvote!!!

  • I don’t know why I bought this but I did. Guess it’s time to run water to my shed

    • I bought this because (profanity) Bunnings

  • Just got refunded email due to no stock. I ordered for a click and collect.

  • +1

    Got 4 in Tassie, all good TY :)
    (the cheap thin rural grade irrigation pipe I usually buy is double the price).

  • +1

    thanks, bought 1. What is this for?

  • +3

    One thing to be mindful of for outdoor use:
    SmarteX pipe has UV resistant properties but is not recommended for exposure to direct sunlight for prolonged periods, it is recommended that a sleeving material is used for this application.

    • +1

      Yeah I bought 200m of it, will bury it. Need to go to the front two corners of the property and this is a good price. Now to dig 200m of trenches :).

    • +1

      You can run the exposed sections through black poly-pipe as a sleeve:


      • Yeh, that's what I'll do where it's exposed, I have heaps of 25mm ID rural grade poly and lots of short offcuts…

  • I'm a bit of a noob. Can this be used for the hot water supply for the washing machine?

    What's the temp rating? didn't see on the listing.

  • Thanks got two for a caravan and camper I'm refurbishing.

    • How big is your camper + caravan? I got 4 in total, most to run some cheap piping to the front corners of the property. I figured I would use 1/2 of one on the camper bus - but even that's pushing it - the thing is only 7m long +/-

      • Only a 22ft van but I've got to run a line out from the header tank to the van. Camper is a slide on, so for hot and cold water and a filler hose.

    • +4

      Isn't that good for business?

    • +24

      Shit pipes should be 100mm diameter. https://bunnings.com.au/search/products?q=dwv

    • +10

      Really? Any evidence of that?

      Pex has been around for about 50 years in the US and has increasingly been used instead of copper due to its cost, flexibility, durability, and ease of use. This includes places with much lower winter temperatures than we experience in Australia. There just aren't reports of it bursting "all the time" so I'm not sure where you got that idea.

      I do know that there are plumbers who, likely out of fear that they'll lose jobs once people realise how easy it is to replace pipes themselves using Pex and Sharkbite connectors (as easy as connecting Lego pieces), will insist that copper is the only way to go.

      Copper still has its place in some plumbing work (e.g. gas connections), but the anti-Pex brigade is on weak ground when it tries to claim that it's useless for basic water plumbing jobs.

      I'm happy to be proven wrong, but you lazily claiming 'shit pipe' doesn't convince me at the moment.

      • +1

        Agree, have nothing against plumbers but what they charge for even a small job is way overpriced. they won't lose jobs though thanks to the strict plumbing code. Same also can be applied to electricians.

        • They're losing jobs from the hardcode people on here. Running pipe in a unit with someone living under you can be an issue, running pipe through your own house it's just going to damage your own property and run onto the ground underneath, it's not a big issue

    • +3

      I've been using it for over 10 years and never had one fail.

  • +1

    Got one. Dunno what I’ll use it for but maybe it’ll come it handy.

    • +2

      Don't tell the cable police but I'll be using mine to lay more network cables around my property for IP cams, shhhhh…

      • cable police here, you're under arrest for not using the proper conduit.

        • It's not practical to use electrical conduit for kilometers of cabling in a rural setting so I'm content with being a rule breaker…

        • And no cabling license

      • That's going tk confuse the next home owners lol maybe write comms conduit or spray paint it grey

        • If/when I sell or subdivide all the cabling will be pulled, I'll probably leave all the pipe though as it's not practical to pull it…

          • +4


            it's not practical to pull it

            then you will pay for child support

  • Yeah, that’s the normal price. Don’t know why. But very good value

    • +11

      It must be very distressing for plumbers who can't grossly overcharge for the simple jobs anymore, now that Pex pipe and Sharkbite/SmarteX couplings have made it so easy for the average Joe to complete most plumbing work with little to no experience.

      You're obviously trying very hard to spin this development as a positive, so good luck with that.

      • -1

        No seriously, just cut and push, that's literally all there is to it, zero nuance whatsoever. Sharkbite has existed for over a decade, it generates more work for me than you can imagine. PEX is awesome, but pushfit isn't for a whole host of reasons that I explain to a client when I'm there to fix their mistakes.

        • Have not used these PEX/fittings, but have installed/used John Guest push fittings / Poly pipes in water filter systems for years and have not had any issues. can't imagine these are different as they are essentially of the same design. the only thing I can think of is the water pressure can be a bit too high in some areas and PLV would be required.

  • Thanks OP, picked up 4.

  • +1

    Done. Well worth it. Australian plumbers are a rare breed smarter than the European and US ones…

  • Bought one, hoping they also have some good deals on the push connectors.

  • Could I use this as an irrigation pipe in garden beds by just poking a hole in the exposed part and rest under the soil?

  • What's the difference between PEX pipes and fittings vs irrigation poly pipes and fittings? The pex pipe is rated as UV resistant.

    • +1

      The pex is not suitable for outdoors

      From the manufacturer
      Is SmarteX pipe UV stabilized, i.e. can it be exposed to sunlight?

      SmarteX pipe has UV resistant properties but is not recommended for exposure to direct sunlight for prolonged periods, it is recommended that a sleeving material is used for this application.

  • +1

    What a coincidence. I saw this a couple of days ago when I checked to see how much I was saving. Someone gave free 11x 4m hot water pipes, which I picked up today.

    I'm using it for hoops for my garden beds. :)

    I realise the UV issue long term, but this is great value for garden hoop usage.

  • +1

    If your house has Polybutylene, make sure to get it checked / replaced. It was a massive problem in the US but not as common here, luckily.

    Pex is fine though.

  • -3

    pex is trash
    crimps are trash
    brazing is the way

  • +1

    Thanks bought 5. Bargin!

  • FWIW the Bunnings guy told me when I asked about it that it is no different from the black stuff, both the black and the red pipe can handle hot water fine. Was good for my odd use case with the black stuff being used to divert the hot water system pressure release pipe into a down pipe (black looked nicer)

    • I suspect they're clearing out the red because most plumbers "seem" to install black for hot & cold…

    • I think that plumbers using black are going against building codes and regulations. Red is to help identify, quickly and easily that hot water flows through this piping. I want to use it for networking cables, but if I do, I would be pretty sure it would be against regulations … so I most likely will not, though it is tempting.

      • Just a couple of weeks ago we had a large amount of our houses water pipes redone as they were a dogs breakfast of bad copper touch ups over the years.
        I asked if the plumber was going to use Red PEX for hot lines. He responded with, "No we only use black"…
        Later on the day of the re-piping, he called back to say "We're not going to touch the hot water pipes as they look to be functioning just fine".
        Kind of annoyed as now we have HALF of the cold water piping in pex and copper, and all of the hot water remains copper.
        I guess this serves me right for not insisting on a detailed/itemised quote in the first place.

        Good news is, I just scored a heap of the Red PEX in this deal and looking at what is required to replace the hot water copper piping with red pex, it looks fairly easy (coming from someone that does a lot of network cabling, crimping, splicing, etc).

        TL;DR: I think plumbers cut corners and use black because they're too lazy/cheap to use both!… If you want a job done right, just do it yourself! :-)

  • The gift that keeps on giving, Bought some to upgrade my current hosing setup for distillation.

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