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Hot Water Heat Pumps


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Upgrading to a hot water heat pump is one of the easiest individual actions you can take to reduce both your bills and your climate impact.

What is a Hot Water Heat Pump?

The hot water in your shower comes from your hot water system, which either heats water in a tank, or heats water as you use it.

Normal hot water systems use electricity or gas to create heat to heat up the water. Instead of generating heat, hot water heat pumps move heat from the air into your water. It works exactly like a fridge, but in reverse.

Even if the ambient temperature doesn’t feel very warm, there’s still a lot of heat energy in it. A heat pump can take all of that energy and heat a tank of water to 60 degrees C - the same temperature as traditional hot water heaters.

Because it takes so much less energy to move heat as opposed to generating heat, hot water heat pumps are 4x more efficient than traditional electric or gas water heaters.

They’re pretty similar in size to regular hot water cylinders but with an extra heat pump unit attached. 

How much could you save?

Higher efficiency means less electricity or gas used, which means lower bills. The amount you save depends on what type of hot water heater you’re switching from and how much water you use. 

You’ll get the most savings if you have a large household and you’re switching from an electric heater, but there’s no question that hot water heat pumps are simply the most efficient and climate friendly way to heat water at home.

To give you an idea, a 4-person household switching from a traditional electric hot water heater would save $685 a year in electricity bills and 20 tons of CO2 emissions over the next 15 years.

Government rebates

Heat pumps have so many benefits for energy efficiency and combating climate change - which is why both the federal government and state governments offer rebates if you install or upgrade to a hot water heat pump. 

The exact amount of the rebate depends on the size of the system installed and where you live, but will generally be from a few hundred dollars up to a few thousand dollars. In some cases, and depending on the hot water heat pump you choose, you might be able to get a new system installed for only $33.