Is a heat pump hot water system right for your Brisbane or Logan home?

How does heat pump hot water work?

A heat pump uses electricity to move heat from the surrounding air into water stored in a tank. A conventional electric storage system uses an electric element to heat the water directly.

Moving heat rather than generating it directly is what makes a heat pump efficient. However, its performance depends on the model, operating conditions and how much hot water your household uses. Lower energy consumption doesn’t mean every home will achieve the same dollar savings. Australian Government: hot water systems.

Compare the installed cost and the running costs

Heat pumps generally cost more to purchase than conventional electric storage systems. Their lower energy use can help offset that difference over time, but the best choice depends on your circumstances.

Before choosing, compare:

• The complete installed price.
• Expected electricity use and your electricity tariff.
• Any plumbing or electrical changes required.
• Maintenance requirements and warranty coverage.
• How long you expect to stay in the property.

A cheaper installation and a cheaper system to run are different things. Ask for a clear explanation of both. The Australian Government recommends considering installation, maintenance and running costs when comparing hot water options. Research before you buy.

Make sure it suits your household and property

Tank capacity is only part of the decision. Your installer should also consider when your household uses hot water and how quickly the proposed system can recover after heavy use.

Useful questions include:

• How many people normally use the showers?
• Are several showers taken close together?
• Is there a bath or another high-demand fixture?
• Is household demand likely to increase?

The installation location also matters. Heat pumps need suitable airflow and manufacturer-specified clearances. Their fan and compressor produce sound, so positioning near bedrooms, outdoor entertaining areas or neighbouring windows deserves attention.

Some systems combine the heat pump and tank in one unit; others use separate components. The available space and layout may influence which design suits your home. YourHome: choosing a hot water system.

Can a heat pump work with rooftop solar?

Yes. Where the system and electrical arrangement allow it, daytime operation can help a heat pump use electricity generated by your rooftop solar panels.

That doesn’t mean the hot water will always be free. Solar output, other household electricity use, system controls and your tariff all affect the result. Any operating schedule also needs to provide enough hot water when your household needs it. YourHome: controlling your hot water system.

Are incentives available?

Eligible heat pump installations may qualify for small-scale technology certificates, commonly called STCs. Assigning those certificates to a registered agent can provide a discount on the purchase price.

Eligibility depends on the system and installation. Before accepting a quote, ask whether an incentive is included, which model it applies to and what paperwork is required. Don’t assume every heat pump qualifies or that an advertised discount applies to your property. Check the Clean Energy Regulator’s guidance.

A heat pump isn’t the only option

The right recommendation should account for the condition of your existing system, your budget and your household’s needs.

On our Wishart hot-water replacement job in August 2026, we investigated a failed heat pump that was leaking onto electrical components. After discussing replacement options, the customer chose a Rheem 315L electric storage system.

That was the decision for that particular home. It illustrates why we assess the situation and explain the options before recommending a replacement.

Get a clear plan before replacing your hot water system

A1 Plumbing Co. helps homeowners across Brisbane’s southside, Logan and surrounding service areas understand their hot water options.

We assess the existing installation, explain the recommended work and provide an upfront fixed price quote before starting. Where electrical work is required, we coordinate with an electrician.

Explore our hot-water repair and replacement services or prepare for a hot-water assessment. Any additional paid investigation is explained and quoted separately for approval.