Solahart Solar Hot Water Systems Supplied & Installed Across Perth
Few brands belong in Perth quite like Solahart. The company pioneered solar water heating right here in Western Australia back in 1953, and seventy years on, Solahart remains the benchmark for roof-top solar hot water in Australia. With Perth enjoying more sunny days than any other Australian capital, a Solahart system lets you heat the bulk of your household's water for free - using nothing but your roof and the WA sun.
Proud Plumbing & Gas supplies, installs, repairs and services Solahart solar hot water systems across the entire Perth metro area. Our licensed plumbers (PL 9874 | GF 014602) handle everything from new Solahart installations and old-system changeovers through to collector repairs, valve replacements and booster servicing - always with fixed upfront pricing and a $0 call-out fee during business hours.
Which Solahart System Is Right for Your Perth Home?
Solahart 181L Roof-Top Solar - Small to Medium Households
The Solahart 181L (from $3,900) is an Australian-designed roof-mounted system ideal for 2–4 person households. It's available in two collector series - CS for lower solar gain conditions and SP for medium-to-high solar gain like Perth's - and uses a frost-resistant, indirect closed-circuit design. That means an anti-freeze fluid circulates through the collectors and heats your water via a heat exchanger, protecting the system on cold Perth Hills mornings and in areas with harsh water chemistry. The tank features Solahart's Super-Shield® enamel coating plus a sacrificial anode for long service life, and it's backed by a 10-year warranty on the cylinder and collectors.
Solahart 302L Roof-Top Solar - Family Homes
For larger families, the Solahart 302L (from $5,900) pairs a 300-litre tank with high-performance collectors built from black powder-coated aluminium absorbers and copper risers. It's a direct thermosiphon system - solar-heated water rises naturally from the collectors into the tank with no pumps or moving parts, which means less to maintain and nothing to break down. Designed for medium-to-high solar gain areas, it's perfectly suited to most of metropolitan Perth. An optional Thermosiphon Restrictor Valve (TRV) adds over-temperature protection for our hot summers. Like the 181L, it carries a 10-year cylinder and collector warranty.
Not sure which suits your roof, household size or suburb? We'll assess your site and recommend the right configuration - free, with no call-out fee during business hours.
Why Solar Hot Water Makes Sense in Perth
Water heating is typically the single largest energy cost in a WA home. Perth's solar resource is among the best of any capital city in the world, which means a properly sized Solahart system can supply the majority of your annual hot water from sunshine alone:
- Slash your bills - most of your hot water is heated for free, year after year, for the life of the system.
- Government incentives - Solahart solar hot water installations may be eligible for federal small-scale technology certificates (STCs), reducing your upfront cost. We'll include any applicable incentives in your fixed quote.
- Built for WA conditions - Solahart systems are engineered and tested to Australian standards for strength, performance and durability, with tanks protected by Super-Shield® enamel.
- Long warranties - 10 years on cylinders and collectors, 5 years on parts.
- Add value to your home - solar hot water is a genuine selling point in the Perth property market.
A Solahart costs more upfront than a conventional tank, but over a 10–15 year life the running cost savings typically repay the difference several times over.
Solahart Installation, Replacement & Repairs in Perth
Solar hot water installation is specialist work - it involves roof penetrations, structural load considerations, tempering valves and (for boosted systems) gas or electrical connections. Our licensed team handles it end to end:
- New Solahart installations - site assessment, roof mounting, plumbing connections, boosting and commissioning, all to WA plumbing standards with compliance certification.
- Solar changeovers - replacing an ageing Solahart or other solar system? Roof-top swaps are often straightforward and cost far less than a new installation.
- Solahart repairs - leaking collectors, failed boosters, faulty tempering and relief valves, anode replacement and frost damage across all Solahart models, old and new.
- Solar servicing - periodic servicing keeps efficiency high and protects your warranty; we recommend a service every five years.
- Gas or electric boosting - we install and service both boost configurations so you have hot water through Perth's cloudy winter stretches.
Every job comes with a fixed-price quote before work begins - no hourly rates, no surprises.
Solahart Service Across the Entire Perth Metro
We install and repair Solahart systems everywhere from Joondalup and Wanneroo down to Rockingham and Mandurah, and from Fremantle out to Midland and the Perth Hills. Same-day repair response is available for urgent faults, and our team is on call 24/7 for hot water emergencies.
Frequently Asked Questions
How much does a Solahart hot water system cost in Perth?
The Solahart 181L starts from $3,900 and the 302L from $5,900, plus installation. Your final cost depends on roof access, boosting type and any incentives you're eligible for - we provide a fixed, all-inclusive quote up front, and federal STC incentives can meaningfully reduce the out-of-pocket price.
Is solar hot water worth it in Perth?
Perth is arguably the best capital city in Australia for solar hot water. With our high solar gain, a correctly sized Solahart can supply the majority of your annual hot water for free, making it the cheapest system to run over its lifetime - typically repaying its higher upfront cost several times over.
What's the difference between the Solahart 181L and 302L?
Size and design. The 181L suits 2–4 person households and uses a frost-resistant closed-circuit design, making it ideal for the Perth Hills and harsh-water areas. The 302L is a 300-litre direct thermosiphon system for families of 4+, best suited to standard metro conditions. We'll recommend the right one after assessing your home.
Does a Solahart still work in winter or on cloudy days?
Yes. The collectors still harvest solar energy on overcast days, and every system we install includes a gas or electric booster that automatically tops up the temperature when needed - so you never run out of hot water, even through a wet Perth winter.
How long do Solahart systems last, and what warranty applies?
Solahart roof-top systems are built for a long service life, backed by a 10-year warranty on the cylinder and collectors and 5 years on parts. With periodic servicing - we recommend every five years - systems commonly run well beyond their warranty period.
Can you repair my existing Solahart system?
Yes. We repair all Solahart models across Perth - leaking collectors, booster faults, valve and anode replacements, and frost damage. If a unit is beyond economical repair, we'll quote a changeover on the spot so you can compare both options.
