About Us


Hydrosol is an all-electric heating, ventilation and cooling (HVAC) design consultancy for new buildings and renovations. We can also assist with pool/spa heating, domestic hot water and refer you to G-Store for solar power and battery storage.

With our associates, we can assist you with project design, supply and installation.

Hydrosol has an Online Shop for you to browse products that may be required for your new building or renovation.

For an instant indicative quote, use our Quick Quote Configurator. Ask if you would like us to review this and we may be able to improve the quote for you.

We also provide consulting services around thermal design and thermal performance.

Along with our associates, we have substantial experience with HVAC, hot water, pool heating and solar systems, from initial design through to system commissioning.

For your all-electric  project to be successful, it needs a holistic approach around:

  • Thermal performance of your house
  • System design that meets your needs and preferences
  • Solar power and battery storage
Chris Siddons BEc - Director / Design Consultant
Chris Siddons BEc. Thermal Design Consultant

I am the Principal of Hydrosol and a registered Thermal Performance Assessor. I am passionate about all-electric home designs that make living very comfortable with low energy needs using solar power.

My interest in sustainability goes back over 4 decades starting from my time at Melbourne based manufacturer Siddons Ramset Limited (Sidchrome Spanners, Ramset Fasteners, Rockwool Insulation, Raypak Boilers, etc). In the early 1980s, I was involved in rockwool manufacturing insulating homes and commercial facilities to reduce heat loads such as Loy Yang power station. Other projects absorbed sound such as the city rail loop stations and Hamer Hall. In 1983, we put the first domestic heat pump water heater onto the Australian market to critical acclaim, the ‘Siddons Solar Plus’. These units gave long economical service, up to 30 years. From 2005 until 2016 we manufactured Siddons Solarstream heat pump water heaters and Hydrosol supports the many units in the field today, including my own operating since 2006.

All-electric Homes

Climate change and rapidly increasing energy prices are the big drivers of change.

This has given rise to sustainable all-electric solutions for heating, cooling, ventilation (HVAC) and water heating powered by solar PV.

Explore Tailored Solutions

Contact us to explore tailored solutions for using your solar power for heating, cooling, ventilation and hot water including:

  • Lowering heat loads and operating costs
  • Improving comfort inside your home
  • Reducing greenhouse gas emissions
  • Solar power and battery storage

Hydrosol can assist your new project as follows:

Some Ideas

We invite you to look through our website to help develop your ideas about heating, cooling, ventilation and solar power for your new build or renovation. Also, you are welcome to contact us to discuss your project: Contact Us


We invite you to interact with our BLOG section or join our Facebook community to discuss your project or anything about all-electric heating, cooling, ventilation, hot water, solar power and storage: Hydrosol Facebook Page

Online Shop

Our Online Shop has a comprensive range of heating, cooling, ventilation (HVAC), domestic hot water and pool heating products: Hydrosol Online Shop

Your Plans

Contact us at the design stage to see what heating, cooling, ventilation and water heating systems would best suit your design and budget.

Good design leads to greater comfort, lower operating costs and higher resale value of your home.

Solar power is a key consideration also. We work only with quality contractors who know what they are doing and use the best panels, inverters and associated equipment.

Indicative Quote

We are happy to provide you with an indicative quote at the design stage. It often takes a few tries to find the best HVAC design for your home and budget.

Click on the link to our Quick Quote Configurator. Answer some questions about your project for an instant price indication. We are happy to review your information and email a written indicative quote to you. You are welcome to ask questions or call us to discuss: Quick Quote

Our Partners & Affiliations