Hot Water Systems in Perth metro
Hot water work covers replacing a failed storage tank, installing a new gas instantaneous unit, fitting a heat pump or solar system, and repairing valves, thermostats and anodes. Perth's hard water and strong summer sun shape the choices: tanks often corrode from the inside, and many households now pick heat pumps or solar to cut running costs.
What to look for
Check that the plumber holds a current Western Australian plumbing licence, and that gas work is done by a licensed gasfitter. Ask whether the quote includes removal of the old unit, a new tempering valve, a pressure relief valve and any compliance certificate. Compare like for like: capacity in litres, energy source, warranty on the tank and on labour. A same-day emergency call-out will usually cost more than a booked job.
How our scoring helps
We list 492 businesses in this category across the Perth metro area. Each is scored on public signals so you can compare them without reading hundreds of reviews. The methodology page explains what we measure and how we weight it. If you want a shortlist, the ranked guide to the best plumbers is the quickest place to start.
Get matched with hot water systems
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All hot water systems, ranked by score and relevance
We found 492 businesses offering hot water systems; 490 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is hot water systems, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.
We may share your enquiry with partner providers who can do the work and earn a referral fee. Our rankings are based solely on our published method and are never affected by referral fees.
Common questions about hot water systems
- How much does a hot water system replacement cost in Perth?
- As a rough guide, a like-for-like electric or gas storage replacement often runs from about $1,500 to $3,000 installed. Gas instantaneous units commonly cost $1,800 to $3,500. Heat pumps and solar systems cost more upfront, often $3,500 to $6,500 or more before rebates. Get at least two written quotes, since access, pipework changes and compliance work move the price.
- How long does a hot water system last?
- Electric and gas storage tanks typically last 8 to 12 years, and less where water is hard or the anode has not been checked. Instantaneous gas units often reach 12 to 15 years. Heat pumps and solar systems usually last 10 to 15 years. Rusty water, leaks around the tank or a unit that runs out quickly are common signs it is near the end.
- What should I expect on installation day?
- A straightforward swap usually takes 2 to 4 hours. The plumber isolates the water and power or gas, drains and removes the old unit, fits the new one with a tempering valve and pressure relief valve, then tests for leaks and temperature. You will be without hot water for part of the day. Ask for the warranty paperwork and any compliance certificate afterwards.
- How can I tell if a hot water plumber is good?
- Confirm their licence number, ask for a written quote that lists the model, warranty and what is included, and check they will remove the old unit. Look for consistent recent reviews that mention punctuality and tidy work. Our scores bring several of these signals together, and the methodology page shows how.
Guides to choosing hot water systems
- What to expect when you get your hot water system replaced in Perth
A step-by-step look at how a hot water system replacement actually goes in a Perth home, from the initial assessment to the final compliance check.
- Scalding and hot water safety: why tempering valves matter in WA homes
Why hot water systems in WA are fitted with temperature-limiting devices, who's most at risk of scalding, and how to check your home is set up safely.
- Free and low-cost help with hot water systems in WA: rebates and payment plans
Where to look for rebates and financial assistance toward a new hot water system in WA, and how payment plans through plumbers typically work.