Best solar hot water systems installers in Perth
These are the 15 Perth Metro specialists who focus on solar hot water systems as a core part of their business, ranked by our earned composite methodology, which weighs rating, review volume, recency, and sentiment together rather than star rating alone.
Looking for solar panels, batteries, or inverters instead? That's covered on our best solar energy equipment supplier overall page. This list is ordered by composite score, with businesses that combine strong ratings, high review volume, and consistently positive sentiment at the top.
Picks are ranked by score and relevance to solar hot water systems, so a lower overall score can rank higher here.
At a glance
| # | Business | Score | Rating | From | Best for |
|---|---|---|---|---|---|
| 1 | Solahart Balcatta | 84 | 5 (41) | — | Fast, honest local service |
| 2 | Tap Doctor Plumbing Perth | 84 | 4.6 (2064) | — | High-volume plumbing reliability |
| 3 | Solargain | 84 | 4.6 (435) | — | Established statewide installer |
| 4 | Solar4Ever | 83 | 4.8 (95) | — | Honest, no-pressure family advice |
| 5 | Ember Plumbing & Gas | 83 | 4.9 (405) | — | Same-day hot water replacement |
| 6 | PV Spark | 83 | 4.8 (67) | — | Budget-friendly quick installs |
| 7 | Solar Market | 83 | 4.7 (119) | — | Comparing multiple quotes |
| 8 | Technaus | 81 | 4.5 (358) | — | Detailed consultations, mixed execution |
| 9 | Solar Repairs Perth | 80 | 4.4 (277) | — | Straight-talking repairs & diagnostics |
| 10 | Plumbdog | 79 | 4.4 (1317) | — | 24/7 emergency callouts |
| 11 | Zambezi Plumbing and Gas | 78 | 4.5 (63) | — | Honest quotes, small crew |
| 12 | URECO Solar | 78 | 4.5 (107) | — | Heat pump follow-up support |
| 13 | iStore | 75 | 4.7 (27) | — | Bundled battery + hot water |
| 14 | Solahart Cannington | 75 | 4.5 (21) | — | Emergency tank replacement |
| 15 | Solaroak | 69 | 4.7 (30) | — | Budget heat pump swaps |
Ranked picks
Solahart Balcatta
Why it ranks first
Solahart Balcatta posts a perfect 5.0 from 41 reviews with the highest composite score on this list, built on repeat mentions of named staff (Christian, Mat, Kyle, Matthew, Fernando, Carl, Amy) fixing and installing systems without fuss. Customers describe same-day leak repairs, patient phone support on a Christmas Eve callout, and temporary hot water units supplied while waiting on installation.
Pros
- Prompt, often same-day service
- Named technicians praised consistently by customers
- Warranty work handled efficiently with reminder follow-ups
- Quotes honoured even when unexpected costs come up
Watch out: A $3 credit card surcharge has caught at least one customer off guard at payment.
Services: solar hot water, residential solar, solar energy company, solar inverters
Tap Doctor Plumbing Perth
Why it ranks second
With over 2,000 reviews and a 4.6 rating, Tap Doctor has the deepest track record on this list for hot water diagnostics and repair alongside general plumbing. Technicians like Tom, Deklan, Nathan, Will, and Chris get named repeatedly for arriving on time, explaining the work, and leaving job sites tidy.
Pros
- Very large review base backing consistent 4.6 rating
- On-time arrival and tidy work sites
- Fast turnaround even on complex jobs
- Named technicians earn repeat praise
Watch out: Some customers flag a $250 investigation fee and unclear pricing on larger jobs, so confirm costs before committing.
Services: solar hot water, solar panel maintenance service, solar energy company, solar energy system service
Solargain
Why it ranks third
Solargain brings 19-plus years in the business and a 4.6 rating across 435 reviews, with strong marks for technician quality and honest sizing advice from staff like Jess, Ricardo, and Lloyd. Most customers report clean installs and quick power bill savings, backed by a broad service range that includes rebate handling.
Pros
- 19+ years of operating history
- Rebate handling and after-install monitoring offered
- Named technicians praised for going beyond standard service
- Broad service range across solar and hot water
Watch out: A vocal minority report no-shows and slow warranty repair follow-up, so stay on top of scheduling.
Services: off grid solar, solar hot water, residential solar, warranty aftercare
Solar4Ever
Why it ranks fourth
Solar4Ever is run directly by Andrew and Suzanne, who reviewers say will actively talk customers out of a purchase if it doesn't make financial sense. With a 4.8 rating from 95 reviews and published cost breakdowns on their site, this is a good pick for buyers who want transparency over a sales pitch.
Pros
- Owner-led, work done by the same people every time
- Transparent pricing published online with cost breakdowns
- Weekend and same-day follow-up support
- Old panels and equipment recycled
Watch out: One reviewer found the team unwilling to engage on pre-build design questions before construction started.
Services: off grid solar, government rebate specialist, solar hot water, residential solar
Ember Plumbing & Gas
Why it ranks fifth
Ember posts a 4.9 rating across 405 reviews with clear published pricing, including $1649 for a Vulcan Freeloader and $2399 for a Rheem Stellar with free removal. Technicians Sam, Adam, and Jordan draw consistent praise for punctuality and neat outcomes, and same-day callbacks are common.
Pros
- Published upfront pricing on standard systems
- Free removal of old systems with replacement
- Same-day emergency callbacks reported
- Named technicians praised for tidy, professional work
Watch out: A minority of jobs involve inexperienced apprentices assigned without warning, occasionally requiring a second visit.
Services: solar hot water, solar panel maintenance service, solar energy company, solar energy system service
PV Spark
Why it ranks sixth
PV Spark has built five years of strong reviews (4.8 from 67) on competitive pricing and staff who explain options rather than push upgrades. Customers report power bill reductions of 60 to 90 percent following installation.
Pros
- Competitive, transparent quoting
- Fast, professional installation turnaround
- Staff explain options without high-pressure sales
- Documented power bill reductions up to 90%
Watch out: One recent complaint notes final completion can drag and after-sales support was weak, so get timelines in writing.
Services: solar hot water, residential solar, battery storage, solar energy company
Solar Market
Why it ranks seventh
Solar Market operates as a matchmaking service, helping customers compare three detailed quotes across panels, inverters, batteries, and insurance before committing to an installer. With a 4.7 rating from 119 reviews, staff like Jordan and Dan are praised for staying involved through installation and arranging finance.
Pros
- Multiple competing quotes gathered for comparison
- Staff stay engaged through the installation process
- Finance support available
- Reliable, clear communication throughout
Services: solar hot water, residential solar, commercial solar, solar energy company
Technaus
Why it ranks eighth
Technaus states 18 years' experience and Clean Energy Council accreditation, with a 4.5 rating from 358 reviews. Chris and Harleigh get consistent praise for thorough, pressure-free consultations, and installers like Henry work cleanly, though the review record is more mixed than others on this list.
Pros
- Thorough site assessments with no sales pressure
- Equipment performs well with real bill savings reported
- Installers praised for clean, efficient work
- Sizeable review base at 358 reviews
Watch out: A minority of reviews describe installation errors, unrepaired roof tile damage, and slow response when problems arise.
Services: solar hot water, residential solar, commercial solar, battery storage
Solar Repairs Perth
Why it ranks ninth
Solar Repairs Perth carries a large 277-review base at 4.4, with technicians Mark, Charlie, Clive, and Clark named for honest, fast diagnostics on both hot water and solar systems. Long-standing clients going back to 2013 remain loyal despite some equipment concerns raised by others.
Pros
- Transparent upfront pricing and timelines
- Experienced, named technicians across jobs
- Same or next-day emergency response
- Honest about the system size actually needed
Watch out: Some customers report premature failures on Eurosun units and friction over warranty timing.
Services: solar hot water, residential solar, commercial solar, warranty aftercare
Plumbdog
Why it ranks tenth
Plumbdog's 1,317 reviews make it the largest review base on this list, with a 4.4 rating built on fast callouts and clear onsite explanations from named staff like James, Josh, Evan, and Emily. Online booking and 7-day availability suit customers who need a quick response.
Pros
- Very large review volume at consistent 4.4 rating
- Fast callout response, 7 days a week
- Clear onsite explanations of required work
- Online booking with real-time updates
Watch out: Pricing complaints recur, including estimates that jump mid-job and invoices that aren't itemised on request.
Services: solar hot water, residential solar, solar energy company, solar panel maintenance service
Zambezi Plumbing and Gas
Why it ranks #11
Zambezi holds a 4.5 rating from 63 reviews, with technicians Greg, Jason, Rhys, Liam, and Louis named for thorough, honest work, sometimes catching inflated quotes from competitors before starting a job. Reviewers consistently mention neat, on-time work.
Pros
- Named technicians trusted by repeat customers
- Quick response to emergencies and tight schedules
- Caught and flagged a competitor's inflated quote
- Clear about job scope before starting work
Watch out: One customer reported being charged extra for apprentice labour and equipment not mentioned at booking.
Services: solar hot water, commercial solar, solar panel maintenance service, solar energy company
URECO Solar
Why it ranks #12
URECO Solar earns a 4.5 rating from 107 reviews for fast emergency heat pump replacements, often within hours or the next day, plus after-sales support that reviewers say stands out. Alex is repeatedly named for answering calls within minutes and following up months after install to check systems are still running well.
Pros
- Same-day or next-day emergency replacement
- Remote phone troubleshooting and program tweaks
- Pricing consistently beats competitors, per reviewers
- Old systems removed and disposed of as part of the job
Watch out: An upfront payment requirement caught one customer off guard, though the installation itself went smoothly.
Services: government rebate specialist, solar hot water, residential solar, solar energy company
iStore
Why it ranks #13
iStore holds a 4.7 rating from 27 reviews, a smaller sample than others here but consistent in praising energy bill cuts and clean installation work when hot water is bundled with solar and battery products. This is a fit for customers wanting one supplier across multiple energy products.
Pros
- Bundles solar, battery, and hot water in one package
- Installers praised for clean, efficient work
- Australian-owned with local support
- Reliable performance reported by most reviewers
Watch out: The monitoring app is described as clunky, and one customer found their system underperforming despite correct sizing.
Services: solar hot water, residential solar, commercial solar, battery storage
Solahart Cannington
Why it ranks #14
Solahart Cannington holds a 4.5 rating from 21 reviews, a smaller sample size but consistent in describing same-day or next-morning fixes for failed hot water tanks, with temporary units supplied while full replacement is arranged. Max, Wendy, Kevin, and Ben are named for professionalism and helpful phone support.
Pros
- Same-day emergency response for tank failures
- Temporary units supplied during replacement
- No call-out fees for diagnostics and simple fixes
- Named staff with consistent follow-up
Watch out: One customer had to pursue legal action over a delayed refund before it was resolved.
Services: solar hot water, residential solar, solar energy company, solar energy system service
Solaroak
Why it ranks #15
Solaroak is the newest and smallest entrant here by review count, with a 4.7 rating from 30 reviews built on quick hot water replacements and competitive heat pump pricing. Staff Dan and Matt are named for responsive, honest advice on options across several years of positive feedback.
Pros
- Emergency same-day hot water installs
- Competitive heat pump pricing
- Named staff known for responsiveness
- End-to-end service from quote to maintenance
Watch out: One recent complaint describes a coordination failure with an electrical contractor and unrepaired roof damage after payment, against an otherwise positive record.
Services: solar hot water, residential solar, solar energy company, solar panel maintenance service
How this ranking was calculated
| Signal | Weight |
|---|---|
| Review sentiment | 28% |
| Google rating | 26% |
| Review volume | 20% |
| Profile completeness | 16% |
| Review recency | 10% |
Ranking data checked 2026-09-05 · Full methodology ›
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Guides before you choose
- 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.