Instant Hot Water System

Get reliable instant hot water system installation and repairs across northwest Sydney. Enjoy upfront pricing, fast turnaround, and solutions built to last.

instant hot water system​

Struggling with No Hot Water or an Old System?

Few things are more frustrating than running out of hot water—especially when it happens during a busy morning with the family or while running a business. A broken or outdated system not only disrupts daily routines but can also mean higher energy bills and wasted time. Leaving the problem unsolved can cause unnecessary stress and make everyday tasks harder than they should be.That’s where an instant hot water system comes in. In House Plumbing specializes in same-day installation and repair of energy-efficient, continuous flow hot water systems that deliver hot water exactly when you need it. With transparent upfront plumbing quotes, expert workmanship, and a 5-star reputation across northwest Sydney, we take the stress out of restoring your hot water supply.

Fast, Reliable Instant Hot Water System Solutions

Our team installs, repairs, and replaces all types of instant hot water systems, including leading brands like Rinnai, Bosch, and Dux. Whether you’re upgrading from a storage tank system or need urgent repairs, we provide tailored solutions that suit your home or business needs.

From electric and gas instant hot water systems to energy-efficient tankless units, we guide you through the best option for your property. Unsure whether an instant or storage hot water system is right for you? We explain the differences in plain English so you can make a confident choice that fits your budget and lifestyle.

Our Instant Hot Water Services Include:

  • Instant hot water system installation
  • Same-day hot water system repair
  • Instant hot water heater replacement
  • Supply and install of trusted brands
  • Gas and electric instant hot water solutions
  • Emergency hot water restoration

Why Choose In House Plumbing for Instant Hot Water?

With over 20 years of hands-on plumbing experience, In House Plumbing has earned a trusted reputation across northwest Sydney. Our licensed plumbers deliver reliable hot water solutions for both homeowners and businesses, backed by transparent pricing, professional communication, and long-term results.What sets us apart is our commitment to quality and peace of mind. From same-day emergency instant hot water system repair to seamless new installations, we use premium materials, clean up after every job, and back our work with a satisfaction guarantee. When you call us, you’re choosing local expertise, honesty, and dependable service from a team that truly cares.

Get Started Today

Don’t let a faulty system leave you without hot water. Book your instant hot water system installation or repair today and enjoy fast, stress-free service from your local plumbing experts. Call now for same-day support or request your free instant hot water system quote online.

Frequently Asked Questions

How much does an instant hot water system cost in Sydney?

The cost of an instant hot water system in Sydney depends on the brand, size, and whether it’s powered by gas or electricity. On average, supply and installation can range from entry-level units to premium systems with advanced energy-efficient features. At In House Plumbing, we provide clear, upfront pricing with no hidden fees so you know exactly what to expect.
Our team also helps you consider long-term running costs. Many continuous flow hot water systems are cheaper to run over time, helping you save on energy bills while enjoying reliable, on-demand hot water.

Is an instant hot water system cheaper to run than a storage tank?

Yes, in many cases. Instant systems heat water only when you turn on the tap, unlike storage systems that constantly keep water hot. This often means lower energy costs and improved efficiency, especially for households or businesses with varied hot water use.
That said, every property has different needs. Our plumbers will assess your household or business requirements and explain whether an instant or storage hot water system will give you the best long-term solution.

Can you repair my instant hot water system today?

Absolutely. We provide same-day instant hot water system service across northwest Sydney, so you don’t have to wait days to get your hot water back. Our licensed plumbers arrive with the right tools and parts to fix most issues on the spot.
If a replacement is required, we’ll explain your options clearly and provide a transparent quote before starting any work. Our goal is to restore your hot water quickly without surprise costs or unnecessary delays.

Which is better: instant hot water or storage hot water?

Both systems have their advantages. Instant hot water systems save space, provide endless hot water, and are usually more energy-efficient. Storage systems, on the other hand, may suit larger households that need to use a lot of hot water at once.
We make it easy to decide by explaining the pros and cons in plain English and helping you choose the right system for your budget, lifestyle, or business.

Do you install energy-efficient systems that save on bills?

Yes. We install modern, energy-efficient instant hot water units designed to cut down running costs and provide reliable hot water. Brands like Rinnai, Bosch, and Dux offer leading technology that makes your home or business more efficient.
Every installation is handled by a licensed plumber to meet all Sydney plumbing compliance and safety standards. That means you’ll enjoy long-term comfort, reduced bills, and peace of mind knowing your system was installed the right way.

Get Your Free Quote Now!

Local Plumbing Across Northwest Sydney

From Glenwood to Blacktown and beyond, we’re your trusted neighborhood plumbers.

Over 20 Years of Trusted Plumbing

Meet Isaac and the In House Plumbing team—local experts who put your home and business first.

Isaac, owner of In House Plumbing
Stylish & Functional Bathroom Upgrades

From leaks to full remodels, we’ll create a bathroom that’s modern, practical, and built to last.

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Let’s Get Your Plumbing Sorted

Call, email, or message us anytime—fast, friendly help is just a click away.

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Rated 4.9 on Google
Google Reviews
Clients who Loved our top-notch Sydney plumbing services

We’re committed to providing our clients with exceptional plumbing services and customer support.

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4.9 Star Rated

Submitted on Google

  • Thank you so much Isaac for an excellent job. Replaced shower, bath, washing machine, laundry with ceramic quater turn taps. Also replaced shower head. Very professional indeed. Punctual, polite, humble and efficient. I'm very satisfied with the impressive work. I would recommend Isaac from In House Plumbing for any of your plumbing works.

  • Me and my extended family have been using their services for nearly 2 and half years . In-house-plumbing is very friendly and experienced team.Even when me and my family was out of the country I emailed him about the problem in my investment property he went and fixed the problem.He is very trustworthy and reliable. We recommend their services.

  • Issac is possibly the best Plumber I have ever met and known in Glenwood and surrounding areas such as Parklea, Stanhope Garden, Kellyville, Rouse Hill, Bella Vista, Castle Hill etc etc. and the suburb list will go on… I looked everywhere but when I came in contact with Issac I realised that there are still some nice guys out there doing the finest plumbing work and most importantly, ON TIME!! Very thorough, honest, humble, well spoken, he became just like our family. I wish there was a way to give him more than Five Star.

  • Isaac turned up on time and did a professional and thorough job. I would definitely recommend him to family and friends and use his services again

  • Friendly, courteous and knowledgeable plumber. Turned up on time and worked out the best solution for our needs. The turn around was within 24 hours which is everything when it comes to hot water and multiple kids in the home. Isaac the plumber, considered the best way to approach things noting some specific needs including pets in the back yard. Highly recommend this service. I'm a very happy customer. Thanks Isaac.

  • Isaac was amazing today. Couldn’t have asked for any better service. He got to our place in 15mins when he knew it was an emergency and nothing was to much to ask at all. If you are looking for a fantastic, reliable, honest plumber, he is your man. I would highly recommend him to anyone in a heartbeat

  • Great service! Isaac from In house plumbing came to fix my hot water and replace a shower head. Everything was sorted and fixed quickly and even worked through the rain to get it done before Christmas.Everything was done with great finish and service. Thanks for coming by Isaac, great experience.

  • Isaac and the team did an awesome job relining my stormwater system, there were polite, professional and kept me updated every step of the way. Genuinely nice to know he is a Glenwood local highly recommend!

  • 2 jobs completed for me by Isaac. He is now my goto plumber. The quotes were always fair and lower then other plumbers. Very happy with the work. Very quick, great communication and on time, no need to chase them to do the work.

  • I have been a customer of Issac for 4 years and he has replaced hotwater system, taps and done a bathroom renovatioon for me. All very high quality work to my satisfaction. My new kitchen tap was installed surpurbly.

  • Isaac is extremely knowledgeable in his domain, highly professional and above all - a very humble person. He did following jobs at our house - replacing the whole stromwater pipeline, installing a new toilet, tap replacement and leaking tap repair. Everything he did was done with best perfection possible! I would highly recommend Isaac for all the plumbing jobs.

  • Cannot express the happiness and satisfaction and just constant communication and effort to help us get our hot water unit working after hours. Took time out of his evening to FaceTime us on how to get our hot water unit working. Thank you so much. Best reliable & couldn’t recommend this business more and more to anyone. Thank you again for the help we really appreciated it. !!!

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