Australian Plumber's Guide to Quoting Hot Water System Replacements

Hot water replacements are bread-and-butter work for Australian plumbers. Here's how to quote them right.

System Types and Pricing

Gas Storage

• 135L: $1,800-2,500 installed
• 170L: $2,000-2,800 installed
• Continuous flow: $2,500-3,500 installed

Electric Storage

• 125L: $1,200-1,800 installed
• 250L: $1,500-2,200 installed
• 315L: $1,800-2,500 installed

Heat Pump

• 270L: $3,500-5,000 installed
• State rebates reduce cost significantly

Solar Hot Water

• Roof-mounted: $4,000-6,000 installed
• Split system: $5,000-7,500 installed

Quote Components

• Remove and dispose old unit
• Supply new unit
• Plumbing connections
• Electrical connection (if applicable)
• Gas connection (if applicable)
• Tempering valve (mandatory)
• Testing and commissioning

Rebates to Include

• VIC: Up to $1,000 for heat pumps
• NSW: Various rebates available
• Federal STCs for solar and heat pumps

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