Heating and cooling for households

A comfortable home without heating or cooling

It’s not always easy to keep buildings warm in winter and cool in summer, without relying on expensive-to-run heating and cooling systems. The best way to keep any building’s inside temperature comfortable is by improving what is called the ‘building envelope’.

The building envelope is what keeps the inside air inside and the outside air outside! Meaning that no energy needs to be wasted in constantly adjusting the air to a comfortable temperature.

Source: Your Home

As you can see in the above diagram, there is a lot of heat loss that occurs through the ceiling, external walls, floor, windows and gaps.

In order to make your home more comfortable it is important to:

Once you’ve done those simple things, it is then important to choose an efficient form of heating or cooling. Heating and cooling can be responsible for around half of the typical household’s energy bills, so it’s important to make the best choices possible. Some heaters and air conditioners can last for 20 years so carefully consider all your options and make the best choice for your home and budget.

Don’t forget that often a system that is more expensive to install might cost a lot less to run, so the price difference can be made up within a year or two on the savings off your power bills.

Summer cooling

Cooling appliance Approximate annual running cost 
Fans $10
Split system air conditioners $20-$50
Ducted air conditioners $125-$255

Data sourced from Sustainability Victoria Cooling Running Costs

As you can see fans are by far the cheapest way of cooling, so when you can use your fan as much as possible.

The running cost of air conditioners can vary quite significantly depending on the type of the air conditioner. That is why it is very important to select an energy-efficient air conditioner with the highest  star rating. There’s a full list of star ratings of appliances available online at energyrating.gov.au.

Winter heating

Heating appliance Approximate annual running cost
Gas heater $340-$395
Electric panel, convection or fan heater $935
Split system reverse cycle air conditioner $200-$310
Ducted gas heating $1295-$1705
Ducted reverse cycle air conditioner $1150-$1500

Data sourced from Sustainability Victoria Heating Running Costs

As you can see, split system reverse cycle air conditioners are the cheapest form of heating.

Isn’t gas heating cheaper to run?

You’ve probably heard that gas heating is cheaper but this is changing. The cost of gas continues to rise each year, which means that the running costs for powering a split system reverse-cycle air conditioner is now cheaper than powering a gas heater! Gas is also a fossil fuel, which is why many households are now choosing to move away from using natural gas. Also, if you have a solar power system, it can be even more cost-effective (and climate friendly) to heat and cool your home with a reverse cycle air conditioner as you can set it on a timer to operate during the day when you are generating your own free electricity from the sun!


Graph showing savings to be made by switching from gas to split system aircon. Large home in Canberra: over $1500, large home in Melbourne: $600, Medium home in Orange NSW: $500, Small home in south NSW: $250, small home in Adelaide: $100.

So if you are looking at heating and cooling your home efficiently, we highly recommend investing in an efficient split system reverse cycle air conditioner.

Get an obligation-free quote here. 

I already have aircon, should I upgrade it?

The technology of reverse cycle air conditioners has improved significantly in recent years, which means that efficient models are much cheaper to run. If your existing air conditioner has some of the following signs, it might be worth replacing:

  • Excessive noise
  • Costly repairs
  • Unusually high energy costs
  • Uneven cooling or heating
  • Over seven years old

Choosing a reverse-cycle air conditioner

With many options in the market, it can be hard working out where to start. This is why Positive Charge regularly reviews the market so that we can recommend good quality systems and suppliers.

We recently completed a market review and have partnered with Daikin Australia to give you an opportunity to upgrade to the highly acclaimed Daikin Cora reverse cycle air conditioner.

The Daikin Cora reverse cycle air conditioner has been selected due to its:

  • Value for money
  • Reliability
  • Strong warranties – it comes with a 5 year warranty against defects in design, materials and workmanship
  • Daikin’s high customer service standards
  • Ease of  installation
  • Only split system air conditioner to be approved by the National Asthma Council Australia’s Sensitive Choice program

The Daikin Cora air conditioner, available through our trusted supplier, is priced between  $2,000-$4,800 (depending on the size and installation).

We highly recommend getting an obligation-free quote to confirm the final price.

Request an obligation-free quote.

Need more help?

Check out our air conditioner buyers guide.