Solar Hot Water Systems in Perth Metropolitan
A guide to choosing a solar hot water installer in Perth, with 59 local suppliers compared and what actually affects system performance and cost.
Solar hot water systems use rooftop collectors, either flat-plate panels or evacuated tubes, to heat water directly or heat a transfer fluid that warms water in an insulated storage tank. Some setups are close-coupled, with the tank sitting on the roof next to the panels. Others are split systems, with the tank on the ground and a pump circulating water or glycol up to the collectors. In Perth's climate, with long sunny stretches for most of the year, a well-sized solar hot water system can cover a large share of a household's hot water needs, with an electric or gas booster picking up the rest on overcast days or in winter.
Perth has 59 businesses installing and servicing these systems, ranging from specialist solar hot water firms to broader plumbing and solar electrical outfits that also handle heat pump and hybrid systems. Quality varies in ways that matter after the sale: correct sizing for household size and roof orientation, proper tank insulation, backup booster wiring, and warranty terms on the tank versus the collectors (these are often different lengths). Installation standard also affects whether the system copes with Perth's summer heat without scaling or overheating issues.
Our ranked guide at /best/solar-hot-water/ scores installers on factors like installation quality, warranty backing, responsiveness for servicing, and pricing transparency, so you can shortlist without calling every business in the metro area. Full detail on how we calculate scores is on the methodology page.
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All solar hot water systems, ranked by score and relevance
We found 59 businesses offering solar hot water systems; 29 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is solar 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.
When you submit an enquiry through our forms, we may share it with partner providers who can do the work, and we may receive a referral fee. Our rankings and scores come from our published method only and are never affected by referral fees.
Common questions about solar hot water systems
- How much does a solar hot water system cost in Perth?
- Expect a wide range depending on system type and household size. Flat-plate systems for a typical family tend to sit at the lower end, while evacuated tube systems and larger split systems with bigger tanks cost more. Government rebates through the small-scale renewable energy scheme can reduce the upfront price, so ask installers to quote the after-rebate figure.
- How often does a solar hot water system need servicing?
- Most manufacturers recommend a check every 3 to 5 years, covering the anode (which prevents tank corrosion), pump function on split systems, and general checks for leaks or scaling. Anodes in particular need periodic replacement or they stop protecting the tank.
- How long do solar hot water systems last?
- Tanks are typically warrantied for 5 to 10 years and often last well beyond that with maintenance. Collectors (panels or tubes) generally have longer warranties and fewer moving parts, so they tend to outlast the tank itself.
- How do I judge the quality of an installer before booking?
- Check whether they hold the right plumbing and electrical licenses for the work involved, ask how they size systems for your household and roof, and confirm what's covered under warranty versus what counts as a chargeable callout. Our scoring on the ranked guide weighs these factors so you don't have to dig through it all yourself.
Guides to choosing solar hot water systems
- Solar hot water system cost in Perth: price ranges and payback time
What drives the price of a solar hot water system in Perth: panel type, tank size, roof access, and how rebates change the sum.