Installing a hot water tank into a small one bedroom unit has to be done correctly to avoid issues with neighbouring properties above or below.


How To Install an Electric Water Tank For A Unit

Why do electric water tank quotes for a unit differ so much?

Getting an electric how water tank installed in Sydney is becoming more common for local plumbers like Nu-Trend. We are getting close to one million units in Sydney with development expanding all the time. For most units, there is not really a large amount of space available for an electric water tank and in this example, the building didn’t have gas or even 3 Phase Electrical to provide an Instantaneous Boiler option.

Is your electric water tank installed illegally?

As an experienced plumber in Sydney, both Rob and I have come across many different ways that either builders, renovators or other plumbers have installed water tanks that are either illegal or not to Australian Standards. You don’t hear about it in the news, but with such confined spaces they can be prone to causing issues and huge amounts of damage to a building. So a professional plumber installing electric hot water tanks must abide by all the relevant codes and safety standards.

How to get a cheap price to install an electric water tank?

You can get lots of cheap quotes over the phone to install an electric water tank. We have written about some of the typical plumber sales gimmicks you will come across already. We know that many people will get quoted over the phone to install a 50-litre electric hot water tank into a one-bedroom unit will be less than $1,000. 

What happens in a lot of cases are shortcuts are taken to do the job without applying the correct legal or safety requirements which could cause problems later if the unit leaks or worse, water gets into floors or walls of the neighbour. 

To get a unit installed correctly you will be paying between $2500 to $3500

How do we install electric water tanks?

Nu-Trend is qualified, licensed and experienced at installing electric hot water tanks into units or even doing bathroom renovations in apartment blocks. Here are the things that make this electric hot water tank installation the correct way for it to be done and to meet Australian Standards;


  1. The heater is sitting in a small safe waste tray. This tray protects the surrounding kitchen cupboards from any small leaks which may lead to water damage.


  2. A terminating valve has been installed on the main water. This valve is necessary for this type of install as the safe waste tray is unable to be connected to any close by drainage, as it is too low. The terminating valve has a sensor, which detects any water leak inside the safe waste tray, this will then automatically shut off the main water feed to the heater, preventing any flooding or further damage.


  3. There is a tempering valve installed. This regulates the hot water to a safe working temperature of usually 50 degrees Celsius, which is safe for children and adults. It can also be adjusted to lower temperatures too.

  4. There is a duo valve installed on the cold water inlet. This valve allows water to move in one direction and prevents any cross water flow.


  5. The copper relief piping has been installed with gradient fall allowing for relief water to drain away without any blockages or water traps.


  6. The Copper pipe work has been installed neat and secure making it easy for maintenance and repairs, this also adds to the longevity of the heater and fittings.


  7. The heaters electrical box is in a safe position, facing the front of the cupboard for easy to access for any future maintenance, repairs or heater diagnosis.


  8. The tempering valve has been installed facing downwards, allowing for relief water to drain away with no disturbances.

This is the detailed, and correct, way to install a hot water unit and why the quotations you get might vary as the level of detail isn’t provided in the work being done. 

Is a hot water tank installation a DIY job?

While some people might like to try changing a tap washer themselves, doing DIY jobs when it comes to installing things like hot water tanks isn’t a good idea. You are dealing with either electricity or gas, combined with water held at high temperatures, so it is a recipe for disaster if not done correctly and can cause damage to your property or harm people. Installing a hot water tank should be done by a plumbing professional in Sydney.


You should always opt to use a fully certified and licensed hot water system installer like Nu-Trend

Years of Plumbing experience

Nu-Trend since 2009

Nu-Trend was formed just over 10 years ago by father and son team, Rick and Michael Karagiannis.

Michael has been in the industry for more than 20 years, passing his knowledge and expertise to Rick as the family tradition lives on.

Rick has always enjoyed the finer elements design details. Not content with solving plumbing problems he soon broadened his skills to also do bathroom renovations in Sydney. A perfect match with hundreds of reviews later & beautiful bathrooms being enjoyed by hundreds of people.

Local | Licensed | Insured

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Protection for your renovation project.

Contract a local Sydney renovator.


A qualified and licensed builder.

INSURED $20,000,000

Public liability insurance for peace of mind.

Drainer  |   Gasfitter  |  Plumber  |  LP Gasfitter 

 Kitchen, Bathroom and Laundry Renovator

Nu-Trend is a renovations company in Sydney that is available 7 days a week. With 15 years experience, the Directors Rob and Rick are hands-on, and provide a personalised service that is fully licensed, insured and qualified.

You can check online with the NSW Department of Fair Trading here


All the work carried out by Nu-Trend is AS/NZ3500:2018 compliant. It is the Australian Standard for Plumbing and Drainage in NSW as set down by Standards Australia and the Australian Building Codes Board. They give the plumbing industry technical direction to enable compliance with required regulatory frameworks.

A personal, written, committment.

The Nu-Trend service guarantee

Rick and Rob are the hands-on Directors for Nu-Trend Plumbing. Rather than hire sub-contractors and manage their business from a distant office, they are on the tools, at your site & working towards delivering your bathroom renovation or plumbing service. It means you are talking directly to the owners of the business, the guys who are accountable and responsible rather than via email or through customer service teams.

It is why they are able to provide a written guarantee that demonstrates their confidence in standing by the quality of their workmanship and the service they deliver to every single client.

They have a very single minded commitment to deliver a high level of professionalism and quality.

Nu-Trend plumbing and bathroom renovation Satisfaction Guarantee

No sales tricks, guaranteed.

'No Gimmicks' that's our policy

With so many years in the trade, the Nu-Trend team has seen their fair share of sales tricks, special offers, promotions and other gimmicks to secure business. Rather than copy what everyone else is doing they decided a long time ago to avoid all the typical gimmicks and stick to clear, upfront information and pricing, including the provision of free Quotes. 

Here are the most common sales gimmicks you will see and how they work, keep in mind there is a reason most service industries don’t disclose fixed prices.

Real examples, real jobs.

Nu-Trend at work

Rather than use lots of photos copied from Google or from bathroom suppliers the Nu-Trend team shares real life examples of their work. Take a look at some of the bathroom renovations or local plumber jobs they have done around Sydney.

Rick Karagiannis - Plumber & Bathroom Renovator

Rick Karagiannis - Plumber & Bathroom Renovator

Rick Karagiannis is a licensed Plumber, Building Renovator and Director of Nu-Trend, a Sydney Plumber and Bathroom Renovations contractor. Nu-Trend has been operating since 2009 as an independent sole trader in Sydney. Rick provides all types of services for small bathroom renovations, leaking tap repairs, hot water high-pressure jet blasting and more.