Although solar hot water systems have been around for decades new technology and government rebates have raised a lot of queries from our customers. Over the years we have answered thousands of those questions and as solar hot water specialists we make it our business to stay at the forefront of both the technical and legislative updates related to our industry.
Below is a list of the answers we provide to the most popular questions we are asked on a daily basis by our clients. However if your particular question isn’t listed feel free to use the online contact form at the bottom of this page and we will reply to you personally as soon as possible.
Where necessary, roof frames are available that allow for panels to be installed on virtually any roof direction, while re-orientating the panels towards North.
The inclination of the solar collectors should also be considered, and ideally should be the same angle as the latitude of the installation location, i.e. Melbourne has a latitude of 38°, therefore the angle of the solar collectors should also be 38°, however a pitch within 20° of the optimum is acceptable, with only a small reduction in efficiency.
Victoria’s plumbing regulations require a booster to be fitted with all solar systems, but it is usually only needed on days with low solar gain. Electric boosting operates on a thermostat and will maintains a minimum temperature of 60°C in the tank during off peak times of 11pm – 7am. On the other hand, a gas booster only operates on the solar tank outlet line and boosts only when the hot water is in use and only then if the temperature in the tank is less than 70°C as per Victorian plumbing regulations.
If frost is an issue in your area, then a Rinnai evacuated tube system may need to be installed. These systems are rated to -12C. This system does not require frost dump valves which can waste huge volumes of water and are not long lasting, or the need for a glycol based anti-freeze system which are inefficient and require routine checking and maintenance.