Cut your heating and hot water bills by up to 70% with modern heat pumps and efficient air conditioning. Perfect for Perth's climate.
70%
Less energy
~$1,000
STC rebate (est.)
3-5 yr
Payback
Modern heat pump technology is 3-4x more efficient than traditional heating methods. Here's why it makes sense for Perth homes.
Heat pumps use 3-4x less energy than resistive heaters (COP 3-4). Savings vary by system and usage.
Heat pumps run on electricity, not gas. No combustion means no nitrogen dioxide indoors, and measurably better air quality.
Run your heating and cooling from your solar panels for near-zero running costs.
Reverse cycle systems heat in winter and cool in summer - one system does both.
Popular efficient heating and cooling options for Perth homes.
Replace your old electric or gas hot water with a super-efficient heat pump
COP 5.1
$3,800 - $4,500
COP 3.5
$2,800 - $3,500
COP 3.4
$3,500 - $4,200
COP 4
$2,900 - $3,600
COP 3.8
$2,500 - $3,200
COP 3.5
$3,200 - $3,900
COP 5.0+
$4,500 - $5,500
COP 4.2
$3,000 - $3,800
Efficient heating in winter, cooling in summer - all from one system
5 star
$1,800 - $4,500 installed
5 star
$1,600 - $3,800 installed
5 star
$1,500 - $3,500 installed
5 star
$1,800 - $4,000 installed
5 star
$1,600 - $3,600 installed
Heat pump hot water systems qualify for the federal Small-scale Technology Certificates (STC) scheme — typically $800–1,200 off the purchase price at the point of sale. WA does not currently have an additional state rebate for hot water systems; the STC discount is the main incentive. Ask your installer to confirm your certificate entitlement.
See how different heating options compare for annual running costs.
| System | Annual Cost | Efficiency | Emissions | Upfront |
|---|---|---|---|---|
| Electric Storage | $600-800/year | 95% | High | Low |
| Gas Storage | $400-600/year | 60-70% | Medium | Medium |
| Heat PumpBest | $150-250/year | 300-400% | Low | Higher |
| Solar Hot Water | $100-200/year | Varies | Very Low | High |
| System | Annual Cost | Efficiency | Emissions | Upfront |
|---|---|---|---|---|
| Electric Heater | $400-800/year | 100% | High | Very Low |
| Gas Heater | $300-500/year | 70-90% | Medium | Medium |
| Reverse Cycle ACBest | $100-250/year | 300-500% | Low | Medium |
Get the most from your heating and cooling system.
Run your heating/cooling when solar is generating to minimise costs.
Each degree of cooling/heating costs about 10% more. Aim for 24-26°C in summer, 18-20°C in winter.
Only heat/cool the rooms you're using. Close doors to unused areas.
Clean filters monthly. Service your AC annually for best efficiency.
Common questions about efficient heating and cooling in Perth.
Yes. Heat pumps use 1/3 to 1/4 the electricity of traditional electric hot water. In Perth's climate, they work efficiently year-round. With STC rebates reducing the upfront cost, modelled payback is typically 3-5 years; actual results vary with hot water usage and electricity rates.
Reverse cycle split systems (Daikin, Mitsubishi, Fujitsu) are the most efficient choice. They provide cooling in summer and heating in winter. Look for 4-5 star energy ratings and ensure the system is correctly sized for your room.
For most Perth households, switching to efficient electric (heat pumps, reverse cycle) makes sense. Gas prices are rising while running on your own solar power costs a fraction of the grid rate. Modern heat pumps are 3-4x more efficient than gas.
Yes! This is one of the best uses for solar panels. Air conditioning demand peaks during the day when solar generation is highest. Time your heavy cooling to solar hours for near-zero running costs.
As a rough guide: small bedroom 2-2.5kW, medium room 3-3.5kW, large living area 5-7kW. Proper sizing depends on room size, insulation, windows, and orientation. Oversized units waste energy; undersized units struggle.
Pair your efficient heating and cooling with these solutions.
Get quotes for efficient heating and cooling systems from qualified Perth installers.
Every gas appliance you replace gets you closer to energy independence. See your progress and what to tackle next.
View Independence TrackerSee how much you could save by upgrading to a modern, efficient system
Compare running costs of your current system against a modern replacement. Costs based on Perth averages (gas 5.3c/MJ).
Your current system
Current
Electric Storage (250L)
Annual cost: $1,000
10-year cost: $10,000
CO₂/yr: 1,600 kg
Upgrade
Heat Pump
Annual cost: $275
10-year cost: $2,750
CO₂/yr: 250 kg
Typical upfront cost: $3,000 - $5,500 installed. Rebates and STCs may reduce this further.