Solar Hot Water and Heat Pump Hot Water Systems in Perth 2026, Costs, STC Rebates, and How to Find a Plumber Near You

Solar Hot Water and Heat Pump Hot Water Systems in Perth 2026

Perth is one of Australia's best environments for solar hot water, very high annual sun hours, STC Zone 2, and Perth's traditionally high electricity prices from Synergy make solar hot water highly economical. Perth also has an established gas reticulation network in many suburbs, making gas continuous flow hot water a common alternative. energy.gov.au

Hot Water System Costs in Perth 2026

• Electric resistance storage HWS (replacement, supply + install), typically $820-$1,820
• Gas storage or continuous flow HWS (replacement, supply + install), typically $1,500-$2,750
• Heat pump HWS (after STC rebate, supply + install), typically $1,650-$3,700
• Solar hot water system (after STC Zone 2 rebate, supply + install), typically $2,100-$4,700

Solar Hot Water vs Heat Pump in Perth

Perth's STC Zone 2 generates one of Australia's strongest STC rebates for solar hot water systems, flat-plate solar hot water collectors are particularly efficient in Perth's dry, sunny climate. Heat pumps also perform well in Perth's warm climate and are increasingly popular, particularly for homes without ideal north-facing roof space. WA plumbing licence (DEMIRS) required for all hot water system installations. demirs.wa.gov.au

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