- Energy-efficient living
- Appliances and equipment
- Your home and rental
- Hot water
- Heating and cooling
- Solar, wind and hydro power
- Plastic free July challenge 2018
- World Environment Day 2018: Beat Plastic Pollution
- At work—what can I do?
- At work—what can we do?
- Babies and budgets
- Energy-saving guide for Northern Australia
- Home-based businesses
- Home entertainment and technology
- Outdoor living
- Reduce your energy bills
- Seniors' guide to energy saving
- Sustainable House Day
- Take action
Install a heat pump hot water system
Heat pump hot water systems run on electricity but are around three times more efficient than a conventional electric water heater. They sit on the ground so don't require roof space.
Heat pumps can operate in most climates but are most efficient in hot and humid conditions and least effective in very cold climates. They make a low humming sound similar to an air conditioner which should be taken into account when deciding on their location.
- Use much less electricity than conventional electric water heaters
- Ground-mounted so no need for roof space or roof strengthening
- Installation costs are generally cheaper compared to a solar water heater
- Can operate in most climates but are most efficient in hot and humid conditions
At a glance
- Savings 2
- Ease 1
- Impact 2
- Find out the best type of low-emission hot water system for your household—either a solar, gas or heat pump hot water system. Electric hot water heaters (storage and instantaneous) are another option though are generally less energy efficient and produce more greenhouse gas emissions.
- Consider your household size, available energy sources, your climate, space and access, and your existing system.
- You should also consider purchase and installation costs, as well as running costs for different heat pump water heaters. Don't forget to include potential long term energy savings and reduced greenhouse gas emissions in your decision making.
- Make sure that you understand what electricity tariff will apply to your new hot water service.
- If you decide on a heat pump hot water system, it's important to choose the most appropriate one for your needs as there are different types available.
- Consider whether your system needs an electric booster.
- Find out if your installer or supplier is registered for small-scale technology certificates (STCs). An STC is a measure of renewable energy which can be traded for cash or a discount on the purchase price of eligible heat pump or solar hot water systems.
- If you're looking at particular systems or models, you'll often be able to research them online.
- Seek expert advice about your options and get several written quotes to make sure you get the best system for your needs at the best price. You can speak to installers, building information centres, or retailers for advice.
- Check your installer is licensed. Qualified installers will be aware of safety issues and will install systems correctly. Your local council or state government will have information about requirements.
- Ask installers about any additional costs that may not be included in the quote.
- If you're in a frost-prone climate, make sure your system is appropriate for the conditions.
- Ask about the warranty and after-sales service and what help you'll get if you have questions about your installation in the future.
- Be aware that installation can take a day or two to complete. Installers may need access to your roof and will need to turn off water, gas and electricity during the installation.
- Talk to your installer about the best place to locate your system. Installing it in a warm location is important for efficient operation, particularly in cooler climates. Position it as close to laundries and bathrooms to minimise pipe work and heat loss.
- Make sure the pipes are insulated.
- If you have a booster control, make sure it's in an accessible location and has an indicator light you can see from inside to remind you to turn it off when not needed.
- If your system has an electric booster, the person doing the electrical work must be licensed to undertake this work.
- While your installer is on site, make sure you have all the information and paperwork necessary to lodge an application for any rebates you may be eligible for and renewable energy certificates.
- Request a Certificate of Compliance from your installer so you can be confident your new water heater meets all regulatory requirements.
- Before your installer leaves, make sure you have clear instructions on how to operate your system and what maintenance is required. Follow the manufacturer's maintenance recommendations.
- Talk to your installer about having your hot water system regularly inspected and serviced.
- Set the temperature of the storage tank to above 60° C to prevent growth of harmful bacteria. Don't overheat the water as this wastes energy.
- If you're away for more than a few days, turn off your storage hot water system. When you return, allow plenty of time for the water to heat back up to above 60° C and remain at that temperature for a minimum of 35 minutes to kill any bacteria that may have grown. It could take several hours for the water to heat above 60° C before you can safely use it.
|Renewable power incentives (solar, wind and hydro)||ACT, NSW, NT, QLD, SA, TAS, VIC, WA||Home owner, Landlord, Renter||Apartment, House|
|Energy and water efficient product information||NSW||Home owner, Landlord, Renter||Apartment, House|
|Energy and water efficient product information||VIC||Home owner, Landlord, Renter||Apartment, House|
You may also like...