Choosing The Best Hot Water System

Hot water system comparison
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Choosing the best Hot Water System for your situation can be a difficult task. Whilst purchase price is a major consideration, these days there is more emphasis on how the product will save you money in the long term, such as water saving technology and energy efficiency. A Hot Water System is generally seen as a product that will last for a number of years so it’s important to make the right decision when you do purchase a new one.

When selecting a hot water system it’s important to consider:

In addition to those factors there are more technical aspects of hot water use such as the the available water pressure in your region, the water conditions and the climate.

Hot Water System Comparison


Traditional Choice
  • Wide Range of Manufacturers
  • Low Initial Cost
  • Parts Readily Available
  • Expensive To Run

Heat Pump

Energy Efficient
  • Cheap to Run
  • Latest Technology
  • Environmentally Friendly
Best Choice


Energy Efficient
  • Cheap to Run
  • Environmentally Friendly
  • Excessive Weight on Roof
  • Poor Access for Maintenance
  • Expensive to Install

Gas / Instantaneous

Instant Hot Water
  • Cheap to Run
  • Environmentally Friendly
  • Expensive to Install

Hot Water System Running Costs Comparison

Below is a good example of how a heat pump hot water system can save you money on your electricity bill.

Running costs comparison

Types of Hot Water System - Additional Information

Most efficient hot water system

We installed this Quantum Heat Pump Hot Water System at a Mermaid Waters property after their old rheem had failed. The customer will save big dollars on their hot water bills with the energy efficient heat pump technology.

There are basically 5 different options you have to select from when buying a new hot water system.

1) Heat Pump: Heat pumps have recently become a more viable technology as their reliability has improved and so has their prices in general. We install heat pumps by leading brands including EvoHeat as they are  leaders in the technology. At Speedy Hot Water we highly recommend considering a Evo Heat heat pump hot water system if your old electric system fails due to the savings in power bills that can be achieved.

2) Natural Gas : In the past, this was the best option to go for if you have natural gas available in your area, however heat pump has taken over as the most cost effective option.

3) Liquid Petroleum Gas : LPG is actually the most expensive to run. Even though it is not so bad for the environment, it is pretty steep on the pocket.

4) Electric: Electric hot water systems are the most common ones. While they are cheap to run, it is not so good for the environment unless you are on a cheaper tariff. If you are on a cheaper tariff you are actually using the electricity that is going to waste! Mainly there are 3 tariff options to choose from. A11, T31, T33.

A11: This is your normal power that is turned on 24 hours a day.

T33: This means that your hot water system is turned on for 18 hours a day. Your electricity to the hot water system will be turned off during the peak periods, generally in the afternoon. You need at least a 125LT hot water system to be on this tariff.

T31: This means that your hot water system is turned on for 10 hours a day. Your hot water system heats up during the nighttime. This tariff is the cheapest and less than half price compared to the A11. It is also better for the environment because you are using the electricity without raising the peak demand. You need at least a 250LT hot water system to go on this tariff.

The information above applies to Queensland only. You should contact your retail electricity supplier for the latest and detailed accurate information.

5) Solar : Solar hot waters systems are pretty expensive to buy and moderately expensive to run. They run from the power of the sun, but need to be boosted sometimes when you run out of hot water, or when there is no sun. So for about a quarter of an year be prepared to boost your hot water system. You can have it boosted by electricity or gas.