Hot water cost calculator - Australia
When a hot water system dies, the decision is usually same-week - so this calculator is live ahead of the full guide: electric swaps $1,200-$2,500, gas continuous flow $1,800-$3,500, heat pump $3,500-$4,500+ (before any state rebates), most repairs $320-$650.
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Ranges cross-checked: published Australian plumber cost guides (Same Day, DLG, Geelong Emergency Plumbing) and the Toowoomba pilot research in this project.