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Cost to run a reverse-cycle air conditioner (heating mode) in Western Australia (2026–27)

WA reference tariff · 33.3c/kWh

$0.33 per hour at 1,000 W

Typical use (6 h/day, 90 days a year at 1,000 W) ≈ $180/year on the Western Power (SWIS) rate.

Source: WA Government Standard Electricity Prices 2026–27 (Synergy Home Plan A1), effective 1 July 2026

Reverse-cycle heating cost in WA at 6 h/day, 90 days/year (33.3c/kWh)
Model bandPer hourPer dayPer monthPer year
Efficient (600 W)$0.20$1.20$36.40$108
Typical (1,000 W)$0.33$2.00$60.67$180
High (2,000 W)$0.67$3.99$121.34$359

Appliance running-cost calculator

WA

Reverse-cycle heating: 600–2,000 W typical range.

4–8 h/day in winter, mostly mornings and evenings; compressor draw rises in cold snaps.

$0.33 per hour · $180/year at your settings
Per day (6 h)
$2.00
Per month
$60.67
Per year (90 days)
$179.62

Tariff: 33.3c/kWh — WA Government Standard Electricity Prices 2026–27 (Synergy Home Plan A1) for the Western Power (SWIS) network, effective 1 July 2026. Wattage basis: Daikin Cora specifications (via Wholesale Aircon). Full reverse-cycle heating costs in WA →

The same appliance in other states

Cutting the cost

Reverse-cycle is one of the cheapest ways to heat, but only if you run it well. Hold a steady, moderate set-point instead of overheating and then cracking a window. Warm the rooms you're in and shut the doors on the ones you aren't. Clean filters move heat better. If your plan has a cheaper overnight rate, take the chill off early rather than heating hard through the evening peak.

Frequently asked questions

What does a reverse-cycle heating cost per hour in WA?
$0.33 at the typical 1,000 W draw on WA's reference rate of 33.3c/kWh (Western Power (SWIS) network). Efficient models run $0.20, high-draw models $0.67.
How is this calculated?
Watts ÷ 1,000 × the tariff = cost per hour, then × hours × days for the period figures. Every figure on this page uses WA's 2026–27 reference rate — change the assumptions in the calculator above.
Is the tariff here what I actually pay?
It's the WA Government Standard Electricity Prices 2026–27 (Synergy Home Plan A1) usage rate for the Western Power (SWIS) network — the government reference. Your market offer may be a little under it; your zone may differ. See WA rates by zone.

Related

Sources — figures current as at 17 July 2026.

4–8 h/day in winter, mostly mornings and evenings; compressor draw rises in cold snaps.