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Best hot water service guide and comparison

Chances are this is a decision you are not going to make too often in a lifetime. However, it is a decision that needs measured consideration and research. Why? Well how often do you use hot water?

Considerations before choosing

What size you need?

• What energy source will power it? – Remember, hot water usually consumes about 25% of a household energy usage.


• Does the household generally take showers all at the same time of the day?
• Do you take showers simultaneously in different bathrooms?
• What are the size of your showerheads?
• Is your dishwasher hooked up to hot or cold? If hot, can it be used whilst someone is showering?
• Make sure you find a reputable plumber for installation


• Electric
• Gas
• Solar
• Heat pumps




Previously, electricity was not as expensive as it is today so consequently, the most commonly installed household hot water provider was electric.

With people becoming more environmentally conscious and concerned about rising power costs, these units are no longer as popular.

This hot water provider, if it heats all day, would be the most expensive option. However, if you are able to heat your water off peak, the tariffs are lower. The consideration then needs to be, you will need a bigger unit if it heats at night, so you don’t run out of hot water during the day.

Installation can be completed within one day.


The difference between an electric unit and a gas unit is that the heating element in the electric unit is substituted by a gas burner.

Advantages to this is that gas is a cheaper power source to electricity and that the unit does not have to be as big because it is continuous.

There are no time of day tariffs with gas, it is a flat rate.

The cost of the unit is similar to that of an electric unit as long as you have gas already at home either mains or LPG.

Installation can be completed within one day.


This option is obviously very cost effective long term and a great environmental option as well. They are however, more expensive to install. The good news is there are rebates though.

Some really important considerations need to be made when purchasing a solar unit. They come with what’s called a booster unit, which will cover the heating of the water when the sun is not performing to its optimum. These can be electric, LPG or gas. You need to install the correct number of panels and sufficient storage so as to minimise the use of the booster. This will of course increase your running costs if it is defaulted to on a regular basis.

You roof also need to comply with comparable specifications to accommodate the panels.

This option will also take a number of days to install.

Heat pumps

These collect the heat from the ambient outside air, similar to that of a reverse cycle air conditioner and how it would heat a room.

The storage system is tanks.

They are very environmentally friendly.

One drawback of this system is its maintenance costs. As is it encompasses the air conditioning unit, there are many working parts therefore the maintenance costs can sometimes be higher than that of other units.

They also require 3 trades for installation. Plumber, electrician and a/c mechanic.
Their running noise can also be elevated compared to the other alternatives. If your roofline is close to your neighbours or you like to have your windows open, the noise factor can become an issue.

So choose wisely. Consult your hot water unit specialist and a plumber and make sure the advice of both is the same.

View our range of systems here: