Hot Water Cylinder Installation & Replacement Experts
We specialise in the installation, replacement, and repair of hot water cylinders (gas and electric), helping Kiwi homes stay warm with reliable water heating systems. Whether you need a new water heater, a heated water cylinder upgrade, or ongoing cylinder maintenance, our team has you covered. We proudly service Auckland, Hamilton, and the wider Waikato region.


No Middleman – Just Trusted Hot Water Cylinder Experts
Avoid extra costs and confusion. We install and replace hot water cylinders directly with no third-party companies or middleman markups. From managing the install to coordinating with your electrician (sparky), our team handles everything. That means faster service, clearer communication and a seamless experience from start to finish.
Fast Response Times and a Wide Range of Hot Water Cylinders
Need help fast? At Cylinder Direct, we supply all leading brands and offer quick response times when you’ve got no hot water or a leaking cylinder. Our experienced team works with both residential and commercial customers to get the job done right, on time and with no hassle. Upgrading or replacing your hot water heating system can also improve efficiency and help lower your power bills.

Maintenance and repairs
We fix all kinds of issues with hot water systems, from low water pressure and flow problems to faulty heating elements and older cylinder tanks. Our experienced plumbers and gasfitters can quickly diagnose and repair hot water cylinders to keep your home or business running smoothly.

No Hot Water?
If your taps have gone cold, there’s likely a fault in your hot water cylinder or water heating system. It might be a small issue with the heating element or a bigger problem inside the cylinder tank. We’ve put together a list of common hot water heater problems to help you figure out what’s going wrong and what your next step should be.
No hot water

Common problems
Depending on the type of hot water cylinder you have in your home, there may be a number of different issues causing this problem.
For both electric & gas hot water systems, you may have an electricity issue. Perhaps your circuit breaker has blown and the circuit has tripped. There might be an issue with either the element or the thermostat - perhaps the element at the bottom of the cylinder has blown or is malfunctioning so it no longer heats the water, or the thermostat no longer works. On all mains pressure cylinders there is a tempering valve, so if the tempering valve is malfunctioning or is not working, it will only let the cold water through.
Treatment
There may be simple things you can do yourself – like check your power source and your gas supply. Have a look at your switchboard and see if there is a switch that has moved to the down position.
For anything else, give the team at Cylinder Direct a call and we’ll talk through the issues on the phone. If we can detect what’s causing the fault on the phone, we’ll be able to give you an estimate of price for that particular issue.
We don’t subcontract our work out – You’ll talk directly to one of our qualified plumbers or gasfitters whose focus is to diagnose and fix the problem. Our gasfitters all hold NZ practicing licenses which means they are qualified to undertake gasfitting works within New Zealand.
There are no hidden costs with any Cylinder Direct products or labour. We’ll always disclose the full costs upfront – and stand by those, with no surprises.
Call us today for a free diagnosis. If needed, we’ll send one of our experienced technicians out.
How can we help?
Call us today for a free diagnosis. If needed, we’ll send one of our experienced technicians out.

Water Leaking from Your Cylinder?
A leaking water cylinder is often caused by a crack in the inner tank, usually from age or general wear and tear. This can lead to water damage, wasted heated water and higher power bills. In most cases, we recommend replacing the cylinder to avoid further issues. At Cylinder Direct, we supply all leading hot water cylinder brands and offer fast, professional installation for both residential and commercial properties.
Leaking water heater

Common problems
The main cause of a hot water cylinder tank leak is a crack or default in the inner tank. All hot water cylinders, electric and gas, are composed of three things – a steel outer casing, thermal insulation, and then an inner copper, steel, or stainless steel tank.
If the inner tank is cracked or damaged (either due to age or from wear and tear if it has been moved), water may leak from it. This is the most common cause of a water tank leak.e might be blocked, not allowing the water to come through.
Treatment
Unfortunately an inner tank cannot be repaired; it will need to be replaced. This is often an urgent issue that needs to be addressed due to the potential water damage a leak may cause, or the cost of unnecessary water use.
Cylinder Direct will talk to you about the best option for your household – whether that’s a change from low to mains pressure, a swap from an inside to an outside location, or to remain on the system you have. Give us a call and let’s get that leak stopped immediately.
We don’t subcontract our work out – You’ll talk directly to one of our qualified plumbers or gasfitters whose focus is to diagnose and fix the problem. Our gasfitters all hold NZ practicing licenses which means they are qualified to undertake gasfitting works within New Zealand.
There are no hidden costs with any Cylinder Direct products or labour. We’ll always disclose the full costs upfront – and stand by those, with no surprises.
Call us today for a free diagnosis. If needed, we’ll send one of our experienced technicians out.
How can we help?
Call us today for a free diagnosis. If needed, we’ll send one of our experienced technicians out.

I dont know
If your water heater isn’t working properly but you’re not sure why, you’re not alone. Maybe the hot water has stopped completely, your water pressure’s dropped or you’ve noticed strange sounds from the heating cylinder. Use our guide to help spot common hot water system issues and decide what to do next.
I dont know

Common problems
Perhaps you’ve run out of hot water, or you hear strange sounds coming from your hot water cylinder. You may also notice that your water or electricity bills are higher than expected ...
Treatment
Give us a call and we’ll see what we can detect over the phone, and we’ll try to give you a price estimate. If needed, we’ll send one of our experienced technicians out to assess the issue.
For all urgent queries, call 0800 450 987 and we’ll get our technicians onto it straight away.
How can we help?
Call us today for a free diagnosis. If needed, we’ll send one of our experienced technicians out.



Hot Water Cylinder Installations
We install both electric and gas hot water cylinders, depending on your setup. Gas water heaters use natural gas to heat water through combustion, while electric cylinders use resistance coils. Not sure what type you have? Our licensed plumbers and gasfitters can help identify the right system and install it properly for your home or business.

Gas Water Heating
Instead of storing hot water, Rheem Gas Continuous Flow Water Heaters only heat the water you need – Go with the flow!

Electric Water Heating
We have a wide range of energy efficient Rheem or Rinnai hot water cylinders ensuring that you never have to take a cold shower again.
We Service Auckland, Hamilton & Waikato







Honest and direct service from a Kiwi brand you can trust
Cylinder Direct are the experienced local team to call when you want rapid response to any issues you’re having with your hot water, your water pressure / flow, or your hot water cylinder.




Personalised Pricing. Call Today
Our team of experienced service man are here to help. Our process is simple. If you have more questions give us a call below.
Call our team to discuss your needs.
Our team will quickly diagnose the issue you're having for free over the phone.Our first response team is available 24/7 for urgent hot water issues – call us on 0800 450 987.
Get a personalised quote
Our team can give you a quote over the phone, or through a simple online application. We have years of experience. Our services are done by our team of 10+ NZ qualified plumbers and gas fitters saving you money on subcontractors other companies would charge.
Book the job
We service the Auckland and Waikato area. Once you are happy with the quote,our team will get your details, find the best time to book a plumber to come and complete your job.

We’re a team of 10+ hot water specialists who can diagnose and fix your issue. We’re not salespeople trying to convince you to replace your cylinder if you don’t need to.
FAQs
Got questions about hot water cylinders, leaks or replacements?
The cost of replacing a hot water cylinder can vary depending on the type of system (electric, gas, or heat pump), the size of the cylinder, and the complexity of the installation. On average, a standard replacement can range from $2,500 to $3,500+, including the new cylinder, parts, and installation. For an accurate quote, we’ll assess your current setup and recommend the best solution for your home or business.
Signs that your cylinder may need replacement include inconsistent water temperature, reduced hot water supply, visible leaks, or if it’s over 10 years old. Regular maintenance can extend its lifespan, but if you’re experiencing these issues, it might be time for an upgrade.
Absolutely. Our team consists of NZ-qualified plumbers and gasfitters, ensuring all work is performed to the highest standards and in compliance with local regulations.
Upgrading to a modern, energy-efficient hot water cylinder or considering a heat pump water heater can significantly reduce energy consumption. Regular maintenance, such as flushing the tank to remove sediment buildup, also helps maintain efficiency.
If your hot water cylinder is leaking, it’s important to act quickly. Turn off the water supply and power to the cylinder if it’s safe to do so. A leak usually means there’s a crack or fault in the inner tank, which often requires a full replacement. We recommend not delaying, as leaks can lead to water damage and higher power bills. Our licensed plumbers and gasfitters can assess the issue and install a new system quickly to get your hot water back up and running.
Got a question?
Contact us for a FREE installation quote or book your job online today.