Geothermal
Ground and groundwater heat pumps in Perth: what they cost, when they pay back, and when they never will.
Geothermal or hydronic heating? Why it isn’t either-or
Geothermal is where the heat comes from, hydronic is how it reaches you. Why you choose the floor first and the heat source second.
Is geothermal worth it, or will an air-source heat pump do?
For most Perth homes, an air-source heat pump will do. The few cases where the ground is worth drilling for, and the many where it isn't.
What types of geothermal system are there?
Trenches, bores or groundwater: the ways a geothermal heat pump reaches the ground, and which one suits a Perth block.
Does geothermal work in a hot climate like Perth’s?
Summer is where the ground earns its keep. Why cooling into the ground beats cooling into hot air, and the one job where the air wins.
Can I heat and cool my home with bore water? Open loop and closed loop geothermal explained
Perth sits on 20 degree groundwater. How an open loop uses it, how a closed loop differs, and when air-source is the better buy.
What approvals and safety rules apply to geothermal heating and cooling in WA?
Bore water needs a licence and a return bore. The approvals, the real safety risks, and what to sort out before the drill arrives.
What geothermal heating costs in Australia, and when it pays off
The heat pump is about 20% dearer and the bores add $30,000 to $150,000. When the ground earns that back, and when it never will.