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Hot Water System Cost in Mandurah, WA: Heat Pump Prices & Rebates

Replacing a gas or electric hot water system in Mandurah? This guide covers heat pump pricing, because Western Australia rebates can make a heat pump one of the cheapest systems to run and cut the upfront cost sharply.

There are 109 plumbing and electrical businesses within 25km of Mandurah. You do not need to ring around them. Tell us about your system and up to 3 who cover your street will send you a quote.

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$2,400 - $4,700
After rebates
$2,900 - $5,400
Before rebates
$500 - $700
Total rebates available
38%
Homes with gas

Mandurah's warm temperate climate with moderate seasons suits heat pumps well: near-rated efficiency most of the year, with a small dip on cold mornings. Installed prices in Mandurah currently sit above the state average.

As a major urban centre in regional Western Australia, Mandurah has a reasonable selection of local heat pump installers. You should still get competitive quotes from local businesses.

Mandurah sits above the Western Australia average for installation costs. This typically reflects larger homes, more complex installations, or a preference for premium brands in the area.

Mandurah's large population of 83,294 means high demand for heat pump installations. Book early to secure your preferred installation date, especially during winter when hot water systems fail more frequently.

Available Rebates in Mandurah

Federal

Small-scale Technology Certificates (STCs)

Applied as a point-of-sale discount by your installer. Value varies by system type and climate zone.

$500 - $700
estimated value

Recommended Brands for Mandurah

iStore

Budget-conscious households wanting maximum rebate impact and simple installation

COP: 3.2Warranty: 5yrNoise: 50dB
$2,800 - $4,400
installed, before rebates

Rheem

Homeowners who want a reliable, well-supported mid-range option from a trusted Australian brand

COP: 3.5Warranty: 5yrNoise: 48dB
$3,200 - $4,800
installed, before rebates

Stiebel Eltron

Those who value German engineering and build quality at a mid-to-premium price point

COP: 3.8Warranty: 5yrNoise: 44dB
$3,500 - $5,000
installed, before rebates

Sanden

Those who want the absolute best efficiency and longest warranty, regardless of upfront cost

COP: 5.1Warranty: 15yrNoise: 38dB
$6,500 - $8,000
installed, before rebates

Reclaim Energy

Homeowners wanting premium Australian-designed quality with the quietest operation

COP: 4.5Warranty: 10yrNoise: 37dB
$6,600 - $8,000
installed, before rebates

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Frequently Asked Questions

How much does a heat pump hot water system cost in Mandurah?
A heat pump hot water system in Mandurah costs between $2,400 and $4,700 fully installed after all available rebates. Before rebates, expect to pay $2,900 to $5,400. The final price depends on the brand, tank size, and complexity of your installation.
What rebates are available for heat pump hot water in Mandurah?
Mandurah residents can access federal Small-scale Technology Certificates (STCs) worth $500-$700 as a point-of-sale discount. These rebates are typically applied by your installer at the point of sale.
Are heat pumps efficient in Mandurah's climate?
Mandurah has a warm temperate climate with moderate seasons. This climate zone offers good year-round heat pump performance. Moderate winters mean only a small seasonal efficiency drop. Most standard heat pump models will perform to specification. A typical household of 3-4 people will spend $200-$400 per year running a heat pump, compared to $800-$1,200 for gas or $1,200-$1,800 for electric storage.
How long does a heat pump installation take in Mandurah?
A standard heat pump hot water installation in Mandurah takes 3-5 hours for a straightforward replacement. If you're converting from gas, it may take a full day as the installer needs to connect new electrical circuits and potentially modify plumbing. Regional installations may require scheduling 2-4 weeks ahead.
What size heat pump do I need for my Mandurah home?
For Mandurah in climate zone 5: 1-2 people need a 150-170L tank, 3-4 people need a 250-315L tank, and 5+ people should consider a 315-400L tank. Your warmer climate means the heat pump recovers quickly, so standard sizing works well.
Which heat pump brand is best for Mandurah?
Mandurah sits in climate zone 5, where all major brands perform well. For best value, iStore or Rheem offer competitive pricing with reliable performance. For premium quality, Sanden (best efficiency, CO2 refrigerant) or Daikin (10-year warranty, cold weather champion) are worth the extra investment. In regional areas, Rheem and Rinnai have the broadest service networks.

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Helpful Guides

Complete Guide to Heat Pump RebatesWhat Size Heat Pump Do I Need?Best Heat Pump Brands in Australia (2026)7 Common Heat Pump ProblemsHow to Replace Your Gas Hot Water

More About Heat Pumps in Mandurah

Reclaim Energy in Mandurah$6,600 - $8,000Sanden in Mandurah$6,500 - $8,000Rheem in Mandurah$3,200 - $4,800iStore in Mandurah$2,800 - $4,400Stiebel Eltron in Mandurah$3,500 - $5,000Replace Gas in MandurahReplace Electric in MandurahReplace Solar in MandurahFind Installers in Mandurah

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Heat Pump Hot Water Costs Across Western Australia

Compare installation costs in other Western Australia suburbs, or see the Western Australia cost guide for the statewide picture.

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