How to Choose a Hot Water System

With water heating accounting for almost a quarter of your energy cost, you need to carefully select the optimum hot water system that will be the most cost effective for your home. You need to take into consideration; weather conditions and usage of your hot water system.

If your hot water system breaks down, you may just want to upgrade to a newer version of the one you’ve already had. But do a little research first as you could save some money on your monthly bill. Let’s take a look at the choices you have.

Types of Hot Water System

Gas Hot Water Systems

One of the most popular water heating systems across Australia, this is the best system to install if you have a gas line or can cheaply access it. Alternately, you can make use of the LPG to run the system. This is great for big households with a high water demand, or if you don’t have the sunny environment/budget/roof position for a solar hot water system.


  • Twice as fast and efficient than electric models
  • Super cheap if connected to a natural gas line
  • If the system comes with a pilot light, it will work even in a blackout
  • Have a great reputation for their efficiency


  • If using LPG bottles be prepared to spend more in the long run
  • If using electric ignition, this may fail during blackouts

Electric Hot Water System

Legislation in Australia is gradually phasing the electric hot water system out due to their large greenhouse emissions and high running costs. You may be tempted by their initial low set up cost, but they will cost you more in the long run.


  • The storage tank is widely available and cheap to install
  • Hot water can be produced on demand
  • Can be installed indoors or outdoors


  • Need a large water tank
  • High monthly bills
  • Not environmentally friendly
  • They are in the process of being banned

Solar Hot Water System

The solar system is basically the opposite of the electric system; it costs more upfront to install, but will save you money in the long run and its super friendly to the environment. You may even be eligible for getting a grant for government rebates, depending on where you live.


  • Perfect for the environment as it uses the sun as it’s renewable energy source
  • Temperature of the water will be preserved on low sunshine days with a gas or electric booster fitting
  • Save money in the long run even though initial investment is higher


  • Initial investment may be too much for some households
  • The tank takes up more space
  • You may get a low performance if you don’t receive a lot of sunshine
  • Due to high heat emissions, tank must be placed well

Heat Pump

Working by drawing heat out of the natural surroundings, very little electricity is used to heat the water. It does not actually pump heat, but the refrigerant extracts and moves heat from one location to the next.


  • Cheaper than gas and oil boilers
  • Long life-span of up to 50 years, so less hot water repairs
  • Environmentally friendly and eligible for government rebates
  • Safer than systems based on combustion


  • Higher startup costs
  • May not function as well in cold regions
  • Requires good ventilation
  • Uses electricity to run the pump

If you need any further advice let Brisbane’s friendly expert plumbers give you some advice by giving us a call on 07 3354 3300