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Solar Hot Water Installation
Pioneering Solar Hot Water Since 1953

Use Your Roof to Heat Your Water, Not Just Your Bills

Join over one million households worldwide who have slashed their water heating costs by up to 75%. Australia's original solar hot water system delivers free hot water from the sun, backed by 70+ years of proven technology.

4.5(20 reviews)
Industry-Leading
Up to 10-Year Warranty
Reduce Bills By
Up to 75%

BOOK A CALL BACK

Fill out our form to request a call back, and remember: our in-home assessments are free!

Melbourne gets a solid amount of sun across the year, and a north-facing roof makes solar hot water genuinely effective for most households. Solahart's collector systems are designed for Australian conditions, and frost-resistant options are available for homes in cooler inland parts of the service area. If your current system is ageing and you're already thinking about reducing your energy use, solar hot water is often one of the most cost-effective places to start.

Solahart Rooftop Solar Hot Water System

Discover the Benefits of Solahart Rooftop Solar Hot Water

Solahart pioneered solar water heating in Australia over 70 years ago. Today, over one million households worldwide enjoy Solahart solar hot water, benefiting from free energy from the sun.

Up to 75% Energy Savings

Dramatically reduce your hot water energy costs with free energy from the sun. Most households save $500-$900 annually on water heating bills.

Up to 10-Year Warranty

Industry-leading Australian warranty for complete peace of mind. Free Heat models offer extended 10/5/5 coverage on cylinder and collectors.

Minimal Maintenance

Simple thermosiphon design means reliable operation with minimal upkeep. No pumps or controllers to maintain or replace.

Frost Protection Options

Closed circuit systems available for frost-prone and harsh water areas. Hartgard fluid protects against freezing in alpine regions.

Eco-Friendly

Reduce your carbon footprint by up to 2.3 tonnes of CO2 annually. Solar hot water is one of the most effective ways to lower household emissions.

Solar Hot Water on Roof
70+ Years of Innovation

Free Hot Water
From the Sun.

Solahart pioneered solar hot water in Australia. Our proven thermosiphon technology has been refined over seven decades to deliver maximum efficiency with minimal maintenance. No pumps, no controllers - just reliable hot water powered by the sun.

1 Million+ Systems
Australian Made
Proven Technology
Get Your Free Quote
Simple Process

Your Journey to Lower Bills

Getting solar hot water from Solahart Melbourne & Mornington Peninsula is easy. Here's what to expect when you book your free assessment.

1

Book Assessment

Fill out the form and we'll call to arrange a convenient time for your free in-home assessment.

2

Expert Consultation

Our solar specialist visits your home to assess your roof, needs, and recommend the right system.

3

Custom Quote

Receive a detailed quote with all rebates calculated, savings projections, and finance options.

4

Professional Install

Licensed plumbers complete your installation, typically in a day. Start saving immediately.

Solar Hot Water FAQs

Is solar hot water worth it for Melbourne's climate, given we do get cold winters?
Yes, solar hot water can perform well in Melbourne through most of the year. Frost-resistant systems are available for areas that get cold overnight, and a gas or electric boost element handles the stretches when sun is limited. You're still reducing how hard the boost needs to work.
What roof orientation works best for solar hot water collectors on Melbourne homes?
North-facing is ideal, and most Melbourne suburbs have a good mix of rooflines that can accommodate this. Northeast and northwest can also work well. A site assessment will confirm whether your roof suits a solar hot water install before any commitment is made.
How does a rooftop solar hot water system work?
Solar hot water systems use roof-mounted collectors to absorb the sun's heat. In thermosiphon systems, as water heats up it naturally rises into the storage tank mounted above the collectors. This process continues throughout the day, providing you with free hot water from the sun. An electric or gas booster ensures you have hot water even during cloudy periods.
What's the difference between open and closed circuit systems?
Open circuit systems circulate your actual water supply through the collectors. They're simpler and ideal for non-frost areas. Closed circuit systems use a special heat transfer fluid (Hartgard) that never freezes, making them perfect for frost-prone or harsh water chemistry areas. The heat is transferred to your water via a heat exchanger.
How much can I save with solar hot water?
Solar hot water can reduce your water heating energy costs by up to 75%, depending on the system and your location. For most Melbourne households, this translates to $500-$900 in annual savings. The exact amount depends on your household usage, system type, and local conditions.
Do I need a north-facing roof?
True north orientation is optimal, but Solahart systems can be effectively installed on roofs facing anywhere within 60 degrees of true north. If your roof faces east or west, we can adjust the collector angle to maximise performance. During your free assessment, we'll determine the best configuration for your home.
What warranty do Solahart solar hot water systems come with?
Standard systems come with a 5/5/5 warranty: 5 years on cylinder and collectors, 5 years parts, and 5 years labour. Free Heat models offer an extended 10/5/5 warranty with 10 years on the cylinder and collectors. This reflects over 70 years of trusted Australian manufacturing.
Are there government rebates available?
Yes! Significant rebates are available through STCs (Small-scale Technology Certificates) for eligible solar hot water installations. These rebates are deducted from your quote price, so you don't pay upfront and claim later. We handle all the paperwork for you.
Smart Choice

Why Choose Solar Hot Water?

Solar hot water is one of the most effective ways to reduce your energy bills. With the right roof orientation, you can harness free energy from the sun to heat your water year-round.

Up to 75% less energy than conventional electric systems
Free energy from the sun, works every sunny day
Systems for all Australian climates including frost areas
Lower carbon footprint than gas or electric storage
Up to 10-year Australian warranty with local support
Eligible for generous government rebates

What's Included in Your Free Assessment

Roof Inspection
Check orientation, angle, and shading for optimal performance
Usage Analysis
Review your household hot water needs
System Recommendation
Right-sized system for your family and location
Rebate Calculation
All applicable STCs and state rebates
Finance Options
Flexible payment plans to suit your budget
Expert Answers
All your questions answered by a solar specialist

What Real Melbourne Homeowners Think

See why homeowners trust Solahart Melbourne & Mornington Peninsula for their solar and hot water needs.

Google Reviews★4.5(20 reviews)

Reviews sourced from Google

Ready to Slash Your Hot Water Bills?

Join over a million households worldwide enjoying Solahart solar hot water. Book your free assessment today and start saving.

Book Free AssessmentCall 1300 362 821
Free Assessment
No Obligation
Up to 10-Year Warranty
Government Rebates

Some of the areas we service - and many more nearby

A selection of the suburbs we cover, not a full list. Don't see yours? call 1300 362 821