24/7 Emergency Plumbing — Fast Response Guaranteed

Rinnai Hot Water Repair

If you’re experiencing issues with your Rinnai system, LJM Plumbing, Gas and Drainage offers professional and reliable Rinnai hot water repair services throughout Brisbane. Our licensed plumbers are experienced with all types of Rinnai systems, particularly continuous flow gas models, and provide practical repair solutions to restore your hot water supply promptly.
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Trusted on the Northside for over 20 years

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Trusted Repair Services for All Rinnai Hot Water Systems

While we no longer recommend Rinnai systems for new installations due to recent concerns with after-sales support, we continue to provide servicing, diagnostics, and repairs for existing Rinnai units. Our aim is to extend the life of your system where possible and provide alternative options when replacement is necessary.

If your Rinnai unit is not heating properly, displaying fault codes, leaking, or losing pressure, our plumbers can assess the fault and recommend the most cost-effective solution. We stock a variety of common Rinnai parts and are familiar with the specific requirements of their gas and continuous flow models.

Common Rinnai hot water repair issues include:

 

  • Faulty gas burners or ignition systems
  • Blocked or dirty heat exchangers
  • Fault codes and electronic control issues
  • Low hot water pressure or inconsistent temperature
  • Leaking connections or corroded fittings

Our team conducts a full diagnostic, cleans and services components where needed, and ensures all repairs meet Australian standards.

Hear From Our Clients

LJM Plumbing, Gas & Drainage

4.7 out of 5 stars
Brendale Business Centre, 48/193 South Pine Road, Brendale
Tesfaye
a week ago
We have had the team out on a few occasions and cannot speak more highly about the service, always on time, cost and professionalism each time. Always being able to converse and gain best possible out...
Heather R
a week ago
I've had LJM do two non-urgent domestic jobs for me recently. All the staff have been courteous and helpful. Their prices seems reasonable and they were happy to do several quote options. Both plum...
Crystal Allen
a week ago
⭐️⭐️⭐️⭐️⭐️ 10/10 – absolute legends. Had LJM Plumbing, Gas & Drainage out today and genuinely couldn’t recommend these guys highly enough. Friendly, professional, down-to-eart...
Sandra Ferguson
3 weeks ago
Thank you Jenn and Ethan for once again providing a fast and efficient service. This time we were really in trouble and the issue was perfectly fixed by Ethan. Very much appreciated this morning., eff...

What to Expect from LJM Plumbing

As a Brisbane-based plumbing company with over 25 years of industry experience, we bring clarity and reliability to every job. We offer:

 

  • Prompt arrival and efficient service
  • Transparent pricing and clear repair recommendations
  • 24/7 availability for emergency situations
  • Ongoing support for Rinnai hot water issues

We prioritise your convenience and safety, and we never perform unnecessary work. If your Rinnai unit is repairable, we fix it. If not, we guide you through suitable replacement options and can install a new system quickly, using brands with stronger support if needed.

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Call Brisbane’s 24/7 Plumbing Experts

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Is It Time to Replace Your Rinnai System?

In some cases, a failing Rinnai unit may not be worth repairing – particularly if parts are no longer available, the unit is out of warranty, or ongoing faults suggest a deeper system issue. Our team will always present you with clear options based on cost, performance, and reliability.


If you decide to replace your system, we supply and install a wide range of premium alternatives such as Rheem, Dux, and AquaMax. These systems are backed by extended warranties and excellent after-sales service.

Still, if you prefer to keep your Rinnai system, we’ll continue to provide expert maintenance and Rinnai hot water repair support to help extend its life.

Frequently Asked Questions

  • Do you repair all Rinnai hot water systems?

    Yes. We repair Rinnai continuous flow, gas storage, and other Rinnai models, provided parts are available.

  • Is it worth repairing a Rinnai unit?

    If the unit is relatively new and the fault is minor, a repair is often worthwhile. We’ll always advise based on safety and value.

  • Do you carry Rinnai spare parts?

    We stock a selection of common parts and can quickly source others if available. If parts are no longer supplied, we’ll suggest suitable next steps.

  • Can you help with Rinnai fault codes?

    Yes. We diagnose and clear error codes and can explain what they mean and how to resolve them.

  • What if my Rinnai unit can’t be repaired?

    We will provide options for like-for-like replacement or alternative systems better suited to your needs.

  • Are Rinnai repairs covered under warranty?

    If your unit is still under warranty, we can assist with the process and documentation needed to lodge a claim.

  • Do you offer emergency repairs?

    Yes. We offer 24/7 emergency Rinnai hot water repair services across Brisbane, including weekends and public holidays.

    For expert Rinnai hot water repair in Brisbane, contact LJM Plumbing, Gas and Drainage today. We offer practical solutions, trusted advice, and service that puts your comfort and safety first.

Reliable Plumbing Solutions

From installation to emergency repairs, LJM Plumbing, Gas and Drainage delivers reliable, compliant, and long-lasting services across Brisbane. Contact our licensed team today for professional solutions you can trust.

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    Get In Touch

    At LJM Plumbing, Gas & Drainage, we provide fast, reliable plumbing and drainage solutions — from clearing blocked drains to flood prevention and burst pipe repairs. Contact us today and discover how our expert team can protect your property and keep your plumbing running smoothly!
    Our mission is to deliver convenient and reliable plumbing and drainage solutions, designed to keep your home or business running smoothly and problem-free.
    Get In Touch
    48/193 South Pine Road
    Brendale QLD 4500
    admin@ljmplumbing.com.au0412 267 000

    © 2025 LJM Plumbing, Gas & Drainage | All Rights Reserved | Developed byweb design brisbane

    4.7
    LJM Plumbing, Gas & Drainage
    Based on 4 reviews

    LJM Plumbing, Gas & Drainage

    4.7 out of 5 stars
    Brendale Business Centre, 48/193 South Pine Road, Brendale
    Tesfaye
    a week ago
    We have had the team out on a few occasions and cannot speak more highly about the service, always on time, cost and professionalism each time. Always being able to converse and gain best possible outcome for job required.
    Heather R
    a week ago
    I've had LJM do two non-urgent domestic jobs for me recently. All the staff have been courteous and helpful. Their prices seems reasonable and they were happy to do several quote options. Both plumbers have been happy to explain what they are doing and provide on the spot advice. I will definitely call them for my next job.
    Crystal Allen
    a week ago
    ⭐️⭐️⭐️⭐️⭐️ 10/10 – absolute legends. Had LJM Plumbing, Gas & Drainage out today and genuinely couldn’t recommend these guys highly enough. Friendly, professional, down-to-earth, explained what was happening, got stuck straight into the job and were just an all-round pleasure to have around. They even tolerated my tiny site supervisor being progressively relocated around the worksite for photographic documentation. He inspected the excavator, supervised the digging and appears satisfied with the standard of workmanship. 😂 It’s surprisingly rare to have tradies turn up and immediately make you feel comfortable and confident that the job is in good hands, but these blokes absolutely did. No drama, no nonsense, just genuinely lovely humans who clearly know what they’re doing. Five stars from me and five stars from the tiny foreman. Would absolutely call them again — although he may insist on operating the excavator next time. Thanks so much, legends! 🙌
    Sandra Ferguson
    3 weeks ago
    Thank you Jenn and Ethan for once again providing a fast and efficient service. This time we were really in trouble and the issue was perfectly fixed by Ethan. Very much appreciated this morning., efficient service. Thank you. Highly recommend this business.