Plain answers before you spend
Written by heating engineers, with the numbers and their sources. Start with the question you have.
What size hot water heat pump do you need?
How to size a hot water heat pump: 200-220 litres for 2-4 people, 300 litres for 4-6, when to go up a size, and how your winters decide the model.
Read the guideInstallationBought a heat pump online? What your plumber and electrician need
What a plumber needs to install a heat pump hot water system you bought online: valves, power, condensate drain, paperwork for the warranty and the STC rebate.
Read the guideRunning costsHeat pump, electric or gas: what hot water costs to run
A worked example for a family of four: what an electric storage tank, a gas storage system and a heat pump cost to run each year, with every assumption shown.
Read the guideVentilationDucted or through-wall heat recovery ventilation?
Centralised (ducted) or decentralised (through-wall) heat recovery ventilation: how they differ, which suits a new build or an existing home, and what they cost.
Read the guide RebatesHeat pump hot water rebates, state by state
What the federal STC rebate is worth where you live, and how to claim it after buying online.
Read the guide BuyingHow buying a heat pump online works
The whole process in six steps, including the parts most shops leave out.
Read the guide