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Hot Water Systems Sydney

99.9% of Sydney-siders have hot water systems. It doesn’t matter if it’s a gas, electric or solar system, they all break down at some point.

If you need your hot water system repaired, serviced or replaced, Pro Plumber is here to help…


What are some common hot water problems?

Your Pro Plumbers deal with hot water issues on a regular basis. The good news is that we’ve likely experienced (and fixed) any problem you can have with hot water systems. Common problems we see are:

  • No hot water

  • Always running out of hot water

  • Low hot water pressure

  • Burst or leaking hot water heater

  • Hot water is brown or a dirty colour 

If you’re experiencing any of these problems with your hot water system, contact Pro Plumber for a free quote to get it fixed in no time. Scroll down and read through a bunch of helpful tips and insights into hot water systems and some of the issues you might experience.

Hot water basics

Hot water is heated via electricity, gas or solar energy. It’s usually stored in some form of insulated tank where it’s kept hot throughout the day/night, ready for use when needed. The only time this is not the case, is when you have an instantaneous gas heater.

Problems tend to occur when the hot water heating system is ageing. The minerals in the water combine when heated which creates a harsh environment for the heating elements, pressure relief valves, pumps, valves and fittings, eventually eroding them to the point of no longer being functional. The heating and cooling of the water expands and contracts the metal tank and the associated fittings. Which is how leaks on joints and seams occur.

What's involved in servicing your hot water unit?

Electric and gas storage hot water heaters all have multiple parts that can be serviced or replaced. If this is done regularly, the life of your heater can be prolonged. Most heaters will function for 10+ years without any issues. If you keep up a regular servicing regime, you’ll get a lot more active years out of hot water systems.

Replacement of the TPR (Temperature Relief Valve)
This is the valve at the top of your heater that activates if you have too much temperature or water pressure inside the heater. They can stick and not activate if they’re old.

Replacement of the anode rod
The purpose of the anode rod is to attract the sediment and corrosive elements (like water minerals) so that they corrode the anode rod rather than the inside of your tank.

The anode rod should be replaced every 3-4 years to ensure your tank remains free from erosion. If you need to replace your existing hot water system and you don’t want to deal with having to replace the anode rod every 3-4 years, you should consider installing an instant flow (aka continuous flow) hot water system. These come with several other advantages:

  1. they’re a compact unit, saving space in your home,
  2. they provide a continuous hot water supply
  3. instant-on systems allow for faster delivery hot water to taps
  4. they have improved temperature control
  5. and they don’t leak.


It’s also good to keep in mind that the government is phasing out electric hot water systems.

So, if you’re having problems with your hot water system, it’s probably time to book in your Pro Plumber to come and look at it and we’ll give you a free quote to either service or replace it.

Sydney's hot water experts

Regardless of the condition of your hot water system or the symptom you’re dealing with, Pro Plumber are your local Sydney plumbers that can solve any plumbing problem.

We’ll fix your hot water system and have it working like new again or replace it if they’re legitimately not replaceable. Your Pro Plumber is here to help and we’re experienced in both repair and replacement of any style of hot water unit. Our qualified plumbers will arrive with fully stocked work vans and can usually repair on the spot. We rely on our suppliers for replacement systems, so there may be a very short wait if you require a new unit. Contact us to now book a free quote.


Our plumbing services are trusted across Sydney. Ask about the Pro Plumber Guarantee – fixed right or you don’t pay.



With years of renovation and new home build experience, Pro Plumber are your go-to for home plumbing installation. Kitchens, bathrooms, laundries, gardens.

Leak Detection

Pro Plumber have expert leak detection technicians which means we find the source of the problem without having to dig or destroy anything.

Leaking Tap

That constant "drip, drip" sound! It's enough to drive anyone mad. Not only is it torture on the mind, it's also probably wasting a lot of water and costing you money.

Toilet Repair

No one likes a toilet that doesn't work. It makes things kind of awkward, especially when you have friends over. Impress your friends, get your toilet fixed.

Blocked Drain

We get it, blocked drains are annoying. It seems like the water still goes down the drain but it takes an eternity and, in the meantime, the slightest use means your sink, shower or toilet overflows.

Gas Plumbing

You know that saying, "cooking with gas"? It's popular for a reason. One of the best ways to cook, heat your home and produce hot water, is with gas. Pro Plumber installs but also repairs gas plumbing systems.

Hot Water

Who doesn't like hot water!? We're not saying a cold shower isn't required from time to time but we really appreciate hot water - especially in Winter. Also, it helps clean things way better than just cold on its own.

Water Filter

Mmm clean water, free from nasties that upset tummies and leave you on the toilet for hours. You'll also save the environment and the hit to your hip pocket when you don't have to buy plastic bottles.

Gutters & Downpipes

Properly running, leaf-free gutters and downpipes are such a wondrous thing to us plumbers. This ensures the water flows away from your property or into a rainwater tank for later use. It's also safer in bushfire season.


Cracks in roof tiles suck in a big way. It's one of those things you don't notice until it's too late and the damage has been done. Lucky your Pro Plumber has plenty of experience with this kind of thing and can sort it out in no time.

Rising Damp

Yuck! Not only does rising damp make for a very sick house and inhabitants, if left for too long it can become a very costly problem to fix. It's best to get onto this before you have to sell a kidney to save your house.

Pipe Repair

There's nothing more satisfying for a Pro Plumber than repairing an existing pipe and saving our customers money they might have otherwise been encouraged to spend by someone suggesting entirely new pipes.


You know the coolest thing? Being able to water your garden without having to lift a finger! Even better, is controlling it with your phone. Ask us how we can automate your watering system.

Subsoil Drainage

Keeping water away from your house, especially under it, is actually way more important to the health and safety of a property than most people think. It's a dirty job but someone's gotta do it.

Annual Inspection

Preventing problems BEFORE they occur is the name of the game here. If you sign up to our annual inspection program, we can keep on top of issues before they become costly.

Rainwater Harvesting

Rainwater tanks are compulsory for all new home builds and there are two main reasons why - they save us money and reduce the burden on the local water system and helping the environment.


We love what we do and it shows. Have a read of some of the reviews and feedback we’ve received from our customers…

Great Service!

Great service and friendly staff.

B. Murray


Fixed, Same Day

We had water leaking throughout our bathroom. Chris, the Pro Plumber, came out for free and was able to work out where it was coming from within minutes. They fixed the problem and were done the same day.

A. Bellamy

Dolls Point

Highly Recommended

I found Pro Plumber on Facebook and messaged them for a quote to renovate my bathroom. Chris was friendly, professional and did a great job. We’re really happy with the result and highly recommend Pro Plumber to all our friends and family now.

S. Talegio


Clean, quick and no hassle

These guys are great! Can’t recommend them highly enough. Such nice people and get the job done properly. They’re clean, quick and no hassle to deal with. The best thing was, I knew exactly what the job would cost me before they did the work. Nice not to have any financial surprises. My last experience with a plumber was horrible. I’ll definitely use Pro Plumber again.

L. Ward


Fixed my blocked toilet

I called Chris from Pro Plumber for a quote to fix my blocked toilet. He was at our place the same afternoon and fixed the toilet in no time at all. He then offered a free inspection of the rest of my bathroom plumbing and found an issue with the drainage system. We booked in a return visit within days and he fixed that too. Such a great service and not as expensive as I thought it would be.

R. Symes



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We’re here to help. If you want immediate assistance, don’t hesitate to send a text or call…


If you prefer email, feel free to send a message to…


For all the latest news, special offers, insights, tips & tricks for plumbing and renovation, follow us…