Heat Pump Hot Water Systems 101

Homeowners overwhelmed by electricity bills that seemingly double from one quarter to the next are switching to heat pump hot water systems. These energy efficient marvels are revolutionising the way Australian households approach sustainability by typically using around 60 to 75% less electricity than a conventional electric storage hot water system. However, it is important to understand how they work, their advantages, and how to choose the right unit.

Benefits of a Heat Pump Hot Water System

Heat pumps deliver abundant hot water while slashing electricity bills. They use the heat in the surrounding atmosphere, acting like a reverse cycle air conditioner ensuring homes have a steady supply of hot water. Heat pump hot water systems are growing in popularity for several reasons including:

• Rebates & Incentives: Many Australian states offer rebates and incentives to encourage homeowners to switch to heat pump hot water systems.

• Eco-Friendly: By using ambient heat instead of fossil fuels, heat pumps reduce greenhouse gas emissions and contribute to a cleaner environment.

• Longevity: With proper care and maintenance, heat pump systems can last for 10-15 years, making them a sound long-term investment.

• Lower Energy Bills: By using less electricity, homeowners can see a substantial decrease in energy costs.

What is a Heat Pump Hot Water System and How Do They Work?

Heat pumps only use electricity to drive the compressor and the fan, instead of using electricity to heat the water directly with an electric element. They can be likened to a type of solar water heater because the heat in the air ultimately comes from the sun. Unlike solar hot water systems, heat-pump systems do not have an electric or gas boosting system. But they do use electricity to operate the evaporator fan and compressor when they are efficiently heating water.

Installing a Heat Pump Hot Water System

There are 2 types of heat pump hot water systems; integrated and split. Heat-pump water heaters are normally a single integrated unit installed outside on the ground. Alternatively, the unit is split between the heat-pump, located outside, and a storage tank which can be installed either outside or inside. This can be an advantage compared to a solar water heater, as collector panels do not need to be installed on the roof, making heat pump hot water installation easier. It is important that they are installed in a well-ventilated area, as they need access to a steady stream of ambient air when operating.

Things to Consider When Choosing a Heat Pump Hot Water System

• Heat losses: All storage systems lose heat through the walls of the cylinder. This means they use energy even if a person doesn’t use any hot water. Homeowners seeking to travel for an extended period should switch their heat pump hot water system off at the switchboard to save energy.

• Off-peak electricity tariff: For families seeking to operate the heat pump water hot water system on the cheaper off-peak electricity tariff, it is important that the system is sized so the amount of water heated overnight meets the households’ daily needs.

• Timers: Many heat-pump systems now come with an in-built timer, which can be used to control the time the system is operating to heat water. This can be useful for those that have a rooftop solar photovoltaic (PV) system to generate electricity by the sun.

• Energy efficiency: Look for a system with a high energy efficiency rating to maximise any long-term savings on energy bills.

• Noise levels: As with air conditioners, heat-pump hot water systems have a fan and compressor that will make noise when the unit is operating to heat the water. This needs to be considered when they are installed.

• Climate suitability: Some heat pump hot water systems perform better in specific climates. In Brisbane, air source heat pumps are an excellent choice due to the warm weather. These systems can efficiently extract heat from the air even during mild winters, ensuring reliable hot water supply throughout the year.

• Read the reviews: A great way for homeowners to find the best heat pump for their home is by reading heat pump reviews.

Save Big with a Heat Pump Hot Water System

Heat pump hot water systems can provide families with the comfort of endless hot water while halving their hot water electricity bill. The fact they are eco-friendly and sustainable is a bonus. Sure, the initial unit cost can be higher than other hot water system options, but the long-term savings will more than cover the initial investment.

Homeowners should engage an experienced and licensed plumber to provide advice on the right system to meet their needs. Plumbers will be best placed to share the local rebates and incentives available for their area. Australians can enjoy endless showers, lower energy costs, and a smaller carbon footprint – all while basking in the comfort of a sustainable home.