Need emergency hot water help or advice?
We offer an emergency hot water cylinder repair service to customers throughout Sydney. Our same day hot water cylinder supply and installation service to replace your old or faulty hot water cylinder will ensure you’re back enjoying trouble-free hot water today. No call-out fee. Huge range to suit your budget and hot water usage requirements.
What is a hot water cylinder and what is its purpose?
A hot water cylinder, also known as a hot water tank or water heater, is designed to heat and store water so it’s ready whenever you need it. Unlike instant or continuous hot water systems, which heat water on demand, a cylinder stores heated water for use throughout your home, including showers, taps, and appliances.
The main purpose of a hot water cylinder is convenience and consistency. It ensures you have a reliable supply of hot water available at all times, particularly during peak usage periods.
Quick links in this article
- Common hot water cylinder repairs »
- Hot water cylinder replacement and installation »
- Switching to an energy efficient heat pump hot water cylinder »
- Rheem hot water cylinders »
- Rinnai hot water cylinders »
- Dux hot water cylinders »
- Contact our friendly team »
Common hot water cylinder repairs
Hot water cylinders are built to last, but like any appliance, they can develop issues over time. Knowing the warning signs early can help you avoid bigger, more expensive problems.
Leaking
Leaks are one of the most common issues and should never be ignored.
- Often indicates internal tank corrosion
- Usually means the cylinder has reached the end of its lifespan
- Replacement is typically required
- Could be due to loose connections, valves, or pipe fittings
- May be repairable if addressed early
Faulty thermostat
A faulty thermostat can cause:
- Water that is too hot or not hot enough
- Inconsistent temperatures
- Increased energy usage
Other problems
- Running out of hot water too quickly
- Discoloured or rusty water
- Strange noises such as banging or rumbling
- Low hot water pressure
- High energy bills
- Faulty heating elements (electric systems)
- Gas burner or ignition issues (gas systems)
What temperature should you set your hot water cylinder?
In New South Wales, legal and safety requirements apply to hot water systems. To ensure both safety and protection against harmful bacteria, the temperature of your hot water cylinder should be as follows:
- The cylinder should be stored at a minimum of 60°C
- Hot water delivered to taps should be limited to 50°C (or 45°C in some cases)
This is typically managed using a tempering valve, which mixes hot and cold water before it reaches your taps.
Contact us for fast help and advice you can trust.
Further reading
- DIY water cylinder maintenance you can do at home »
- Hot water cylinder relief valve repair »
- Why is my water heater leakin from the bottom »
Hot water cylinder replacement and installation
If your system is no longer performing as it should, it may be time to replace your hot water cylinder. As systems age, they can reach a point where repairs are no longer practical or cost-effective. In some cases, spare parts are no longer manufactured for older models, while other issues, such as internal tank failure, are simply not repairable.
When this happens, replacement becomes the most reliable and long-term solution, ensuring you have consistent, energy-efficient hot water for your home.
Hot water cylinder replacement might be necessary if:
- You’re constantly running out of hot water
- Your energy bills are higher than usual
- The system is over 8 to 12 years old and replacement parts are no longer available
- Repairs are becoming frequent or costly
Fast hot water cylinder replacement service
At Cheapa Hot Water, we provide fast hot water cylinder replacement and installation across all Sydney suburbs. Our fully stocked service vehicles carry thousands of parts and a wide range of new hot water cylinders, allowing us to complete most repairs and replacements on the spot. That means less waiting and a faster return to reliable, trouble-free hot water.
Switching to an energy efficient heat pump hot water cylinder
If you’re looking to reduce your energy bills and environmental impact, upgrading to a heat pump hot water cylinder is a smart choice.
Heat pump systems work by extracting heat from the air to heat water, using significantly less electricity than traditional systems.
The benefits of heat pump hot water cylinders
- Up to 70% more energy efficient than conventional systems
- Lower running costs
- Reduced carbon footprint
- Eligible for government rebates
Save money. Take advantage of Government rebates available.
Homeowners in NSW may be eligible for rebates under energy efficiency programs such as the Energy Savings Scheme (ESS).
We can assist with the entire rebate process, helping to reduce the upfront cost of your new system. Contact us on 0410 693 532 to find out how.
Further reading
- How do heat pumps work?
- Heat pump installation service »
- Switch from electric hot water to an energy efficient heat pump »
- Tips to reduce your energy bills »
- Heat pump hot water cylinder repairs »
- What is the best heat pump for hot water »
Rheem hot water cylinders
We are authorised Rheem service technicians and installation specialists.
Rheem is a trusted choice thanks to its proven performance in Australian conditions, a wide range of electric, gas, solar, and heat pump systems, excellent warranty support, and systems designed for durability and long service life.
We are authorised Rheem service specialists
At Cheapa Hot Water, we are authorised Rheem repair, service, and replacement technicians, giving you confidence that your system is in expert hands and your warranty won’t be deemed void because you’ve used unauthorised repairers.
Rheem hot water cylinder replacement service
We carry a large selection of new Rheem hot water cylinders to suit different budgets and household sizes, with options ready for fast, same-day installation.
Rheem hot water cyclinder repair service
Our trucks are on the road right now, stocked with thousands of Rheem hot water system spare parts, ready to get you back enjoying trouble free hot water today!
- For fast Rheem hot water cylinder repairs, contact us today on 0410 693 532.
Rinnai hot water cylinders
We are authorised Rinnai service technicians and installation specialists.
Rinnai is a global leader in hot water technology, known for its energy efficiency, advanced system design, and strong reputation for reliability. Its high-performance systems feature precise temperature control and are suitable for a wide range of applications, making Rinnai a trusted choice for many households.
We are authorised Rinnai service specialists
At Cheapa Hot Water, we are authorised Rinnai repair, service, and replacement agents, giving you confidence that your system is in expert hands and your warranty won’t be deemed void because you’ve used unauthorised repairers.
Rinnai hot water cyclinder replacement service
We carry a large selection of new Rinnai hot water cylinders to suit different budgets and household sizes, with options ready for fast, same-day installation.
Rinnai hot water cyclinder repair service
Our trucks are on the road right now, stocked with thousands of Rinnai hot water system spare parts, ready to get you back enjoying trouble free hot water today!
Dux hot water cylinders
We are authorised Dux service technicians and installation specialists.
Dux has been manufacturing hot water systems in Australia for decades, offering practical and affordable solutions for everyday households. Known for their reliability and cost-effectiveness, Dux systems are designed specifically for Australian homes and are available in a range of electric, gas, and heat pump options, with strong local support and widespread availability.
We are authorised Dux service specialists
At Cheapa Hot Water, we are authorised Dux repair, service, and replacement agent, giving you confidence that your system is in expert hands and your warranty won’t be deemed void because you’ve used unauthorised repairers.
Dux hot water cyclinder replacement service
We carry a large selection of new Dux hot water cylinders to suit different budgets and household sizes, with options ready for fast, same-day installation.
Dux hot water cyclinder repair service
Our trucks are on the road right now, stocked with thousands of Dux hot water system spare parts, ready to get you back enjoying trouble free hot water today!
Same day repairs. Supply and installation service
Questions? We’re here to help.
If your hot water cyclinder is not working properly or you want to upgrade to an energy efficient system, call now and speak with one of our licensed specialists. Over the phone, we can discuss possible solutions and provide a cost estimate to fix the problem. Contact us for fast help and advice you can trust. We service all Sydney suburbs. No call-out fee!
We offer a fast, same day hot water service to all Sydney suburbs including: Northern Beaches, Upper and Lower North Shore, Eastern Suburbs, Hills District, Inner West, Western Suburbs + Blacktown, St George + Bexley, Campbelltown, Sutherland Shire, Penrith, Liverpool, Hornsby, and Ryde.